From 7b824975d46859d80f8417077f80c28d630c6c98 Mon Sep 17 00:00:00 2001
From: Salvatore Filippone <salvatore.filippone@cranfield.ac.uk>
Date: Thu, 24 Jul 2008 12:32:14 +0000
Subject: [PATCH] psblas2:  docs/html  docs/html/footnode.html 
 docs/html/img1.png  docs/html/img10.png  docs/html/img100.png 
 docs/html/img101.png  docs/html/img102.png  docs/html/img103.png 
 docs/html/img104.png  docs/html/img105.png  docs/html/img106.png 
 docs/html/img107.png  docs/html/img108.png  docs/html/img109.png 
 docs/html/img11.png  docs/html/img110.png  docs/html/img111.png 
 docs/html/img112.png  docs/html/img113.png  docs/html/img114.png 
 docs/html/img115.png  docs/html/img116.png  docs/html/img117.png 
 docs/html/img118.png  docs/html/img119.png  docs/html/img12.png 
 docs/html/img120.png  docs/html/img121.png  docs/html/img122.png 
 docs/html/img123.png  docs/html/img124.png  docs/html/img125.png 
 docs/html/img126.png  docs/html/img127.png  docs/html/img128.png 
 docs/html/img129.png  docs/html/img13.png  docs/html/img130.png 
 docs/html/img131.png  docs/html/img132.png  docs/html/img133.png 
 docs/html/img134.png  docs/html/img135.png  docs/html/img136.png 
 docs/html/img137.png  docs/html/img138.png  docs/html/img139.png 
 docs/html/img14.png  docs/html/img140.png  docs/html/img141.png 
 docs/html/img142.png  docs/html/img143.png  docs/html/img144.png 
 docs/html/img145.png  docs/html/img15.png  docs/html/img16.png 
 docs/html/img17.png  docs/html/img18.png  docs/html/img19.png 
 docs/html/img2.png  docs/html/img20.png  docs/html/img21.png 
 docs/html/img22.png  docs/html/img23.png  docs/html/img24.png 
 docs/html/img25.png  docs/html/img26.png  docs/html/img27.png 
 docs/html/img28.png  docs/html/img29.png  docs/html/img3.png 
 docs/html/img30.png  docs/html/img31.png  docs/html/img32.png 
 docs/html/img33.png  docs/html/img34.png  docs/html/img35.png 
 docs/html/img36.png  docs/html/img37.png  docs/html/img38.png 
 docs/html/img39.png  docs/html/img4.png  docs/html/img40.png 
 docs/html/img41.png  docs/html/img42.png  docs/html/img43.png 
 docs/html/img44.png  docs/html/img45.png  docs/html/img46.png 
 docs/html/img47.png  docs/html/img48.png  docs/html/img49.png 
 docs/html/img5.png  docs/html/img50.png  docs/html/img51.png 
 docs/html/img52.png  docs/html/img53.png  docs/html/img54.png 
 docs/html/img55.png  docs/html/img56.png  docs/html/img57.png 
 docs/html/img58.png  docs/html/img59.png  docs/html/img6.png 
 docs/html/img60.png  docs/html/img61.png  docs/html/img62.png 
 docs/html/img63.png  docs/html/img64.png  docs/html/img65.png 
 docs/html/img66.png  docs/html/img67.png  docs/html/img68.png 
 docs/html/img69.png  docs/html/img7.png  docs/html/img70.png 
 docs/html/img71.png  docs/html/img72.png  docs/html/img73.png 
 docs/html/img74.png  docs/html/img75.png  docs/html/img76.png 
 docs/html/img77.png  docs/html/img78.png  docs/html/img79.png 
 docs/html/img8.png  docs/html/img80.png  docs/html/img81.png 
 docs/html/img82.png  docs/html/img83.png  docs/html/img84.png 
 docs/html/img85.png  docs/html/img86.png  docs/html/img87.png 
 docs/html/img88.png  docs/html/img89.png  docs/html/img9.png 
 docs/html/img90.png  docs/html/img91.png  docs/html/img92.png 
 docs/html/img93.png  docs/html/img94.png  docs/html/img95.png 
 docs/html/img96.png  docs/html/img97.png  docs/html/img98.png 
 docs/html/img99.png  docs/html/index.html  docs/html/node1.html 
 docs/html/node10.html  docs/html/node100.html  docs/html/node101.html 
 docs/html/node102.html  docs/html/node103.html  docs/html/node104.html 
 docs/html/node105.html  docs/html/node106.html  docs/html/node107.html 
 docs/html/node108.html  docs/html/node109.html  docs/html/node11.html 
 docs/html/node110.html  docs/html/node111.html  docs/html/node112.html 
 docs/html/node113.html  docs/html/node114.html  docs/html/node115.html 
 docs/html/node116.html  docs/html/node117.html  docs/html/node118.html 
 docs/html/node119.html  docs/html/node12.html  docs/html/node13.html 
 docs/html/node14.html  docs/html/node15.html  docs/html/node16.html 
 docs/html/node17.html  docs/html/node18.html  docs/html/node19.html 
 docs/html/node2.html  docs/html/node20.html  docs/html/node21.html 
 docs/html/node22.html  docs/html/node23.html  docs/html/node24.html 
 docs/html/node25.html  docs/html/node26.html  docs/html/node27.html 
 docs/html/node28.html  docs/html/node29.html  docs/html/node3.html 
 docs/html/node30.html  docs/html/node31.html  docs/html/node32.html 
 docs/html/node33.html  docs/html/node34.html  docs/html/node35.html 
 docs/html/node36.html  docs/html/node37.html  docs/html/node38.html 
 docs/html/node39.html  docs/html/node4.html  docs/html/node40.html 
 docs/html/node41.html  docs/html/node42.html  docs/html/node43.html 
 docs/html/node44.html  docs/html/node45.html  docs/html/node46.html 
 docs/html/node47.html  docs/html/node48.html  docs/html/node49.html 
 docs/html/node5.html  docs/html/node50.html  docs/html/node51.html 
 docs/html/node52.html  docs/html/node53.html  docs/html/node54.html 
 docs/html/node55.html  docs/html/node56.html  docs/html/node57.html 
 docs/html/node58.html  docs/html/node59.html  docs/html/node6.html 
 docs/html/node60.html  docs/html/node61.html  docs/html/node62.html 
 docs/html/node63.html  docs/html/node64.html  docs/html/node65.html 
 docs/html/node66.html  docs/html/node67.html  docs/html/node68.html 
 docs/html/node69.html  docs/html/node7.html  docs/html/node70.html 
 docs/html/node71.html  docs/html/node72.html  docs/html/node73.html 
 docs/html/node74.html  docs/html/node75.html  docs/html/node76.html 
 docs/html/node77.html  docs/html/node78.html  docs/html/node79.html 
 docs/html/node8.html  docs/html/node80.html  docs/html/node81.html 
 docs/html/node82.html  docs/html/node83.html  docs/html/node84.html 
 docs/html/node85.html  docs/html/node86.html  docs/html/node87.html 
 docs/html/node88.html  docs/html/node89.html  docs/html/node9.html 
 docs/html/node90.html  docs/html/node91.html  docs/html/node92.html 
 docs/html/node93.html  docs/html/node94.html  docs/html/node95.html 
 docs/html/node96.html  docs/html/node97.html  docs/html/node98.html 
 docs/html/node99.html  docs/html/userhtml.css  docs/html/userhtml.html 
 docs/pdf/Makefile  docs/pdf/commrout.tex  docs/pdf/datastruct.tex 
 docs/pdf/error.tex  docs/pdf/methods.tex  docs/pdf/penv.tex 
 docs/pdf/precs.tex  docs/pdf/psbrout.tex  docs/pdf/toolsrout.tex 
 docs/pdf/userguide.tex  docs/pdf/userhtml.tex  docs/pdf/util.tex

Added HTML version of manual.
---
 docs/html/footnode.html | 145 ++++++++
 docs/html/img1.png      | Bin 0 -> 200 bytes
 docs/html/img10.png     | Bin 0 -> 544 bytes
 docs/html/img100.png    | Bin 0 -> 255 bytes
 docs/html/img101.png    | Bin 0 -> 387 bytes
 docs/html/img102.png    | Bin 0 -> 250 bytes
 docs/html/img103.png    | Bin 0 -> 244 bytes
 docs/html/img104.png    | Bin 0 -> 276 bytes
 docs/html/img105.png    | Bin 0 -> 374 bytes
 docs/html/img106.png    | Bin 0 -> 222 bytes
 docs/html/img107.png    | Bin 0 -> 259 bytes
 docs/html/img108.png    | Bin 0 -> 804 bytes
 docs/html/img109.png    | Bin 0 -> 408 bytes
 docs/html/img11.png     | Bin 0 -> 131 bytes
 docs/html/img110.png    | Bin 0 -> 419 bytes
 docs/html/img111.png    | Bin 0 -> 354 bytes
 docs/html/img112.png    | Bin 0 -> 310 bytes
 docs/html/img113.png    | Bin 0 -> 835 bytes
 docs/html/img114.png    | Bin 0 -> 335 bytes
 docs/html/img115.png    | Bin 0 -> 497 bytes
 docs/html/img116.png    | Bin 0 -> 403 bytes
 docs/html/img117.png    | Bin 0 -> 266 bytes
 docs/html/img118.png    | Bin 0 -> 533 bytes
 docs/html/img119.png    | Bin 0 -> 544 bytes
 docs/html/img12.png     | Bin 0 -> 240 bytes
 docs/html/img120.png    | Bin 0 -> 334 bytes
 docs/html/img121.png    | Bin 0 -> 231 bytes
 docs/html/img122.png    | Bin 0 -> 519 bytes
 docs/html/img123.png    | Bin 0 -> 604 bytes
 docs/html/img124.png    | Bin 0 -> 577 bytes
 docs/html/img125.png    | Bin 0 -> 210 bytes
 docs/html/img126.png    | Bin 0 -> 568 bytes
 docs/html/img127.png    | Bin 0 -> 743 bytes
 docs/html/img128.png    | Bin 0 -> 276 bytes
 docs/html/img129.png    | Bin 0 -> 521 bytes
 docs/html/img13.png     | Bin 0 -> 192 bytes
 docs/html/img130.png    | Bin 0 -> 267 bytes
 docs/html/img131.png    | Bin 0 -> 568 bytes
 docs/html/img132.png    | Bin 0 -> 239 bytes
 docs/html/img133.png    |   0
 docs/html/img134.png    |   0
 docs/html/img135.png    | Bin 0 -> 371 bytes
 docs/html/img136.png    | Bin 0 -> 431 bytes
 docs/html/img137.png    | Bin 0 -> 916 bytes
 docs/html/img138.png    | Bin 0 -> 677 bytes
 docs/html/img139.png    | Bin 0 -> 234 bytes
 docs/html/img14.png     | Bin 0 -> 368 bytes
 docs/html/img140.png    | Bin 0 -> 430 bytes
 docs/html/img141.png    | Bin 0 -> 500 bytes
 docs/html/img142.png    | Bin 0 -> 412 bytes
 docs/html/img143.png    | Bin 0 -> 356 bytes
 docs/html/img144.png    | Bin 0 -> 379 bytes
 docs/html/img145.png    | Bin 0 -> 288 bytes
 docs/html/img15.png     | Bin 0 -> 520 bytes
 docs/html/img16.png     |   0
 docs/html/img17.png     | Bin 0 -> 6852 bytes
 docs/html/img18.png     |   0
 docs/html/img19.png     | Bin 0 -> 517 bytes
 docs/html/img2.png      | Bin 0 -> 112 bytes
 docs/html/img20.png     | Bin 0 -> 771 bytes
 docs/html/img21.png     | Bin 0 -> 618 bytes
 docs/html/img22.png     |   0
 docs/html/img23.png     | Bin 0 -> 480 bytes
 docs/html/img24.png     | Bin 0 -> 184 bytes
 docs/html/img25.png     | Bin 0 -> 232 bytes
 docs/html/img26.png     | Bin 0 -> 201 bytes
 docs/html/img27.png     | Bin 0 -> 226 bytes
 docs/html/img28.png     | Bin 0 -> 449 bytes
 docs/html/img29.png     | Bin 0 -> 464 bytes
 docs/html/img3.png      | Bin 0 -> 191 bytes
 docs/html/img30.png     | Bin 0 -> 266 bytes
 docs/html/img31.png     | Bin 0 -> 780 bytes
 docs/html/img32.png     | Bin 0 -> 247 bytes
 docs/html/img33.png     | Bin 0 -> 567 bytes
 docs/html/img34.png     | Bin 0 -> 1050 bytes
 docs/html/img35.png     | Bin 0 -> 310 bytes
 docs/html/img36.png     | Bin 0 -> 791 bytes
 docs/html/img37.png     | Bin 0 -> 436 bytes
 docs/html/img38.png     | Bin 0 -> 868 bytes
 docs/html/img39.png     | Bin 0 -> 309 bytes
 docs/html/img4.png      | Bin 0 -> 206 bytes
 docs/html/img40.png     | Bin 0 -> 508 bytes
 docs/html/img41.png     | Bin 0 -> 907 bytes
 docs/html/img42.png     | Bin 0 -> 562 bytes
 docs/html/img43.png     | Bin 0 -> 564 bytes
 docs/html/img44.png     | Bin 0 -> 325 bytes
 docs/html/img45.png     | Bin 0 -> 596 bytes
 docs/html/img46.png     | Bin 0 -> 594 bytes
 docs/html/img47.png     | Bin 0 -> 486 bytes
 docs/html/img48.png     | Bin 0 -> 670 bytes
 docs/html/img49.png     | Bin 0 -> 721 bytes
 docs/html/img5.png      | Bin 0 -> 371 bytes
 docs/html/img50.png     | Bin 0 -> 729 bytes
 docs/html/img51.png     | Bin 0 -> 242 bytes
 docs/html/img52.png     | Bin 0 -> 255 bytes
 docs/html/img53.png     | Bin 0 -> 350 bytes
 docs/html/img54.png     | Bin 0 -> 416 bytes
 docs/html/img55.png     | Bin 0 -> 3612 bytes
 docs/html/img56.png     | Bin 0 -> 199 bytes
 docs/html/img57.png     | Bin 0 -> 228 bytes
 docs/html/img58.png     | Bin 0 -> 426 bytes
 docs/html/img59.png     | Bin 0 -> 804 bytes
 docs/html/img6.png      | Bin 0 -> 206 bytes
 docs/html/img60.png     | Bin 0 -> 282 bytes
 docs/html/img61.png     | Bin 0 -> 404 bytes
 docs/html/img62.png     | Bin 0 -> 97 bytes
 docs/html/img63.png     | Bin 0 -> 356 bytes
 docs/html/img64.png     | Bin 0 -> 254 bytes
 docs/html/img65.png     | Bin 0 -> 247 bytes
 docs/html/img66.png     | Bin 0 -> 248 bytes
 docs/html/img67.png     | Bin 0 -> 253 bytes
 docs/html/img68.png     | Bin 0 -> 336 bytes
 docs/html/img69.png     | Bin 0 -> 792 bytes
 docs/html/img7.png      | Bin 0 -> 235 bytes
 docs/html/img70.png     | Bin 0 -> 117 bytes
 docs/html/img71.png     | Bin 0 -> 794 bytes
 docs/html/img72.png     | Bin 0 -> 366 bytes
 docs/html/img73.png     | Bin 0 -> 498 bytes
 docs/html/img74.png     | Bin 0 -> 325 bytes
 docs/html/img75.png     | Bin 0 -> 362 bytes
 docs/html/img76.png     | Bin 0 -> 301 bytes
 docs/html/img77.png     | Bin 0 -> 350 bytes
 docs/html/img78.png     | Bin 0 -> 534 bytes
 docs/html/img79.png     | Bin 0 -> 172 bytes
 docs/html/img8.png      | Bin 0 -> 249 bytes
 docs/html/img80.png     | Bin 0 -> 828 bytes
 docs/html/img81.png     | Bin 0 -> 357 bytes
 docs/html/img82.png     | Bin 0 -> 501 bytes
 docs/html/img83.png     | Bin 0 -> 366 bytes
 docs/html/img84.png     | Bin 0 -> 255 bytes
 docs/html/img85.png     | Bin 0 -> 243 bytes
 docs/html/img86.png     | Bin 0 -> 186 bytes
 docs/html/img87.png     | Bin 0 -> 571 bytes
 docs/html/img88.png     | Bin 0 -> 318 bytes
 docs/html/img89.png     | Bin 0 -> 459 bytes
 docs/html/img9.png      | Bin 0 -> 393 bytes
 docs/html/img90.png     | Bin 0 -> 395 bytes
 docs/html/img91.png     | Bin 0 -> 286 bytes
 docs/html/img92.png     | Bin 0 -> 415 bytes
 docs/html/img93.png     | Bin 0 -> 186 bytes
 docs/html/img94.png     | Bin 0 -> 375 bytes
 docs/html/img95.png     | Bin 0 -> 227 bytes
 docs/html/img96.png     | Bin 0 -> 341 bytes
 docs/html/img97.png     | Bin 0 -> 258 bytes
 docs/html/img98.png     | Bin 0 -> 193 bytes
 docs/html/img99.png     | Bin 0 -> 134 bytes
 docs/html/index.html    | 354 +++++++++++++++++++
 docs/html/node1.html    | 115 ++++++
 docs/html/node10.html   | 102 ++++++
 docs/html/node100.html  | 141 ++++++++
 docs/html/node101.html  | 159 +++++++++
 docs/html/node102.html  | 102 ++++++
 docs/html/node103.html  |  83 +++++
 docs/html/node104.html  | 395 +++++++++++++++++++++
 docs/html/node105.html  | 162 +++++++++
 docs/html/node106.html  |  74 ++++
 docs/html/node107.html  | 144 ++++++++
 docs/html/node108.html  | 139 ++++++++
 docs/html/node109.html  | 157 +++++++++
 docs/html/node11.html   | 264 ++++++++++++++
 docs/html/node110.html  | 101 ++++++
 docs/html/node111.html  |  73 ++++
 docs/html/node112.html  | 393 +++++++++++++++++++++
 docs/html/node113.html  | 162 +++++++++
 docs/html/node114.html  |  74 ++++
 docs/html/node115.html  | 100 ++++++
 docs/html/node116.html  |  83 +++++
 docs/html/node117.html  | 392 +++++++++++++++++++++
 docs/html/node118.html  | 162 +++++++++
 docs/html/node119.html  |  74 ++++
 docs/html/node12.html   |  89 +++++
 docs/html/node13.html   | 103 ++++++
 docs/html/node14.html   |  81 +++++
 docs/html/node15.html   | 111 ++++++
 docs/html/node16.html   | 112 ++++++
 docs/html/node17.html   | 102 ++++++
 docs/html/node18.html   | 101 ++++++
 docs/html/node19.html   | 123 +++++++
 docs/html/node2.html    | 165 +++++++++
 docs/html/node20.html   |  86 +++++
 docs/html/node21.html   |  95 +++++
 docs/html/node22.html   | 103 ++++++
 docs/html/node23.html   | 103 ++++++
 docs/html/node24.html   | 112 ++++++
 docs/html/node25.html   |  95 +++++
 docs/html/node26.html   | 289 +++++++++++++++
 docs/html/node27.html   | 288 +++++++++++++++
 docs/html/node28.html   | 274 +++++++++++++++
 docs/html/node29.html   | 252 +++++++++++++
 docs/html/node3.html    | 202 +++++++++++
 docs/html/node30.html   | 226 ++++++++++++
 docs/html/node31.html   | 251 +++++++++++++
 docs/html/node32.html   | 436 +++++++++++++++++++++++
 docs/html/node33.html   | 273 ++++++++++++++
 docs/html/node34.html   | 227 ++++++++++++
 docs/html/node35.html   | 439 +++++++++++++++++++++++
 docs/html/node36.html   | 484 +++++++++++++++++++++++++
 docs/html/node37.html   |  84 +++++
 docs/html/node38.html   | 655 ++++++++++++++++++++++++++++++++++
 docs/html/node39.html   | 763 ++++++++++++++++++++++++++++++++++++++++
 docs/html/node4.html    | 227 ++++++++++++
 docs/html/node40.html   | 275 +++++++++++++++
 docs/html/node41.html   | 273 ++++++++++++++
 docs/html/node42.html   | 135 +++++++
 docs/html/node43.html   | 368 +++++++++++++++++++
 docs/html/node44.html   | 193 ++++++++++
 docs/html/node45.html   | 128 +++++++
 docs/html/node46.html   | 123 +++++++
 docs/html/node47.html   | 110 ++++++
 docs/html/node48.html   | 208 +++++++++++
 docs/html/node49.html   | 177 ++++++++++
 docs/html/node5.html    | 186 ++++++++++
 docs/html/node50.html   | 246 +++++++++++++
 docs/html/node51.html   | 205 +++++++++++
 docs/html/node52.html   | 121 +++++++
 docs/html/node53.html   | 140 ++++++++
 docs/html/node54.html   | 158 +++++++++
 docs/html/node55.html   | 219 ++++++++++++
 docs/html/node56.html   | 120 +++++++
 docs/html/node57.html   | 125 +++++++
 docs/html/node58.html   | 145 ++++++++
 docs/html/node59.html   | 223 ++++++++++++
 docs/html/node6.html    | 279 +++++++++++++++
 docs/html/node60.html   | 199 +++++++++++
 docs/html/node61.html   | 132 +++++++
 docs/html/node62.html   | 156 ++++++++
 docs/html/node63.html   | 132 +++++++
 docs/html/node64.html   | 156 ++++++++
 docs/html/node65.html   | 136 +++++++
 docs/html/node66.html   | 135 +++++++
 docs/html/node67.html   | 265 ++++++++++++++
 docs/html/node68.html   | 132 +++++++
 docs/html/node69.html   | 283 +++++++++++++++
 docs/html/node7.html    | 131 +++++++
 docs/html/node70.html   | 109 ++++++
 docs/html/node71.html   | 129 +++++++
 docs/html/node72.html   | 180 ++++++++++
 docs/html/node73.html   | 158 +++++++++
 docs/html/node74.html   | 110 ++++++
 docs/html/node75.html   | 132 +++++++
 docs/html/node76.html   |  88 +++++
 docs/html/node77.html   |  96 +++++
 docs/html/node78.html   |  94 +++++
 docs/html/node79.html   | 170 +++++++++
 docs/html/node8.html    | 150 ++++++++
 docs/html/node80.html   | 185 ++++++++++
 docs/html/node81.html   | 184 ++++++++++
 docs/html/node82.html   | 186 ++++++++++
 docs/html/node83.html   | 184 ++++++++++
 docs/html/node84.html   | 186 ++++++++++
 docs/html/node85.html   | 200 +++++++++++
 docs/html/node86.html   | 199 +++++++++++
 docs/html/node87.html   | 201 +++++++++++
 docs/html/node88.html   | 122 +++++++
 docs/html/node89.html   |  93 +++++
 docs/html/node9.html    | 257 ++++++++++++++
 docs/html/node90.html   |  93 +++++
 docs/html/node91.html   |  98 ++++++
 docs/html/node92.html   |  95 +++++
 docs/html/node93.html   | 164 +++++++++
 docs/html/node94.html   | 173 +++++++++
 docs/html/node95.html   | 119 +++++++
 docs/html/node96.html   | 120 +++++++
 docs/html/node97.html   | 123 +++++++
 docs/html/node98.html   |  97 +++++
 docs/html/node99.html   | 146 ++++++++
 docs/html/userhtml.css  |  30 ++
 docs/html/userhtml.html | 354 +++++++++++++++++++
 docs/pdf/Makefile       |  65 +++-
 docs/pdf/commrout.tex   |  43 ++-
 docs/pdf/datastruct.tex |  72 ++--
 docs/pdf/error.tex      |  41 ++-
 docs/pdf/methods.tex    | 484 +------------------------
 docs/pdf/penv.tex       | 136 ++++---
 docs/pdf/precs.tex      |  35 +-
 docs/pdf/psbrout.tex    |  91 +++--
 docs/pdf/toolsrout.tex  | 282 ++++++++++-----
 docs/pdf/userguide.tex  |  34 +-
 docs/pdf/userhtml.tex   | 270 ++++++++++++++
 docs/pdf/util.tex       |  44 ++-
 280 files changed, 23025 insertions(+), 712 deletions(-)
 create mode 100644 docs/html/footnode.html
 create mode 100644 docs/html/img1.png
 create mode 100644 docs/html/img10.png
 create mode 100644 docs/html/img100.png
 create mode 100644 docs/html/img101.png
 create mode 100644 docs/html/img102.png
 create mode 100644 docs/html/img103.png
 create mode 100644 docs/html/img104.png
 create mode 100644 docs/html/img105.png
 create mode 100644 docs/html/img106.png
 create mode 100644 docs/html/img107.png
 create mode 100644 docs/html/img108.png
 create mode 100644 docs/html/img109.png
 create mode 100644 docs/html/img11.png
 create mode 100644 docs/html/img110.png
 create mode 100644 docs/html/img111.png
 create mode 100644 docs/html/img112.png
 create mode 100644 docs/html/img113.png
 create mode 100644 docs/html/img114.png
 create mode 100644 docs/html/img115.png
 create mode 100644 docs/html/img116.png
 create mode 100644 docs/html/img117.png
 create mode 100644 docs/html/img118.png
 create mode 100644 docs/html/img119.png
 create mode 100644 docs/html/img12.png
 create mode 100644 docs/html/img120.png
 create mode 100644 docs/html/img121.png
 create mode 100644 docs/html/img122.png
 create mode 100644 docs/html/img123.png
 create mode 100644 docs/html/img124.png
 create mode 100644 docs/html/img125.png
 create mode 100644 docs/html/img126.png
 create mode 100644 docs/html/img127.png
 create mode 100644 docs/html/img128.png
 create mode 100644 docs/html/img129.png
 create mode 100644 docs/html/img13.png
 create mode 100644 docs/html/img130.png
 create mode 100644 docs/html/img131.png
 create mode 100644 docs/html/img132.png
 create mode 100644 docs/html/img133.png
 create mode 100644 docs/html/img134.png
 create mode 100644 docs/html/img135.png
 create mode 100644 docs/html/img136.png
 create mode 100644 docs/html/img137.png
 create mode 100644 docs/html/img138.png
 create mode 100644 docs/html/img139.png
 create mode 100644 docs/html/img14.png
 create mode 100644 docs/html/img140.png
 create mode 100644 docs/html/img141.png
 create mode 100644 docs/html/img142.png
 create mode 100644 docs/html/img143.png
 create mode 100644 docs/html/img144.png
 create mode 100644 docs/html/img145.png
 create mode 100644 docs/html/img15.png
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diff --git a/docs/html/footnode.html b/docs/html/footnode.html
new file mode 100644
index 00000000..930b8349
--- /dev/null
+++ b/docs/html/footnode.html
@@ -0,0 +1,145 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>Footnotes</TITLE>
+<META NAME="description" CONTENT="Footnotes">
+<META NAME="keywords" CONTENT="userhtml">
+<META NAME="resource-type" CONTENT="document">
+<META NAME="distribution" CONTENT="global">
+
+<META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1">
+<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
+
+<LINK REL="STYLESHEET" HREF="userhtml.css">
+
+<LINK REL="previous" HREF="node105.html">
+<LINK REL="up" HREF="userhtml.html">
+</HEAD>
+
+<BODY >
+
+<DL>
+<DT><A NAME="foot164">...
+explicitly</A><A
+ HREF="node3.html#tex2html2"><SUP>1</SUP></A></DT>
+<DD>In our prototype implementation  we provide 
+sample scatter/gather routines.
+
+<PRE>.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+</PRE>
+</DD>
+<DT><A NAME="foot173">... domain</A><A
+ HREF="node4.html#tex2html3"><SUP>2</SUP></A></DT>
+<DD>This is
+  the normal situation when the pattern of the sparse matrix is
+  symmetric, which is equivalent to say that the interaction between
+  two variables is reciprocal. If the matrix pattern is non-symmetric
+  we may have one-way interactions, and these could cause a situation
+  in which a boundary point is not a halo point for its neighbour.
+
+<PRE>.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+</PRE>
+</DD>
+<DT><A NAME="foot6689">... follows</A><A
+ HREF="node99.html#tex2html28"><SUP>3</SUP></A></DT>
+<DD>The string is case-insensitive
+
+<PRE>.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+.
+</PRE>
+</DD>
+</DL>
+</BODY>
+</HTML>
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GIT binary patch
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GIT binary patch
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diff --git a/docs/html/img124.png b/docs/html/img124.png
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GIT binary patch
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GIT binary patch
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GIT binary patch
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GIT binary patch
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GIT binary patch
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GIT binary patch
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index 00000000..9569fcac
--- /dev/null
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
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+<META NAME="keywords" CONTENT="userhtml">
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+<META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1">
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+
+<LINK REL="STYLESHEET" HREF="userhtml.css">
+
+<LINK REL="next" HREF="node1.html">
+</HEAD>
+
+<BODY >
+<!--Navigation Panel-->
+<A NAME="tex2html31"
+  HREF="node1.html">
+<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
+ SRC="file:/usr/share/latex2html/icons/next.png"></A> 
+<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up"
+ SRC="file:/usr/share/latex2html/icons/up_g.png"> 
+<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous"
+ SRC="file:/usr/share/latex2html/icons/prev_g.png"> 
+<A NAME="tex2html29"
+  HREF="node1.html">
+<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents"
+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html32"
+  HREF="node1.html">Contents</A>
+ &nbsp; <B>  <A NAME="tex2html30"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+<FONT SIZE="+2"><B>PSBLAS
+<BR>
+<BR>
+User's and Reference
+  Guide</B></FONT>
+<BR><I><FONT SIZE="+1">A reference guide for the Parallel Sparse BLAS library</FONT></I>
+<BR>
+<BR>
+<BR>
+<BR><B>Salvatore Filippone
+<BR>
+Alfredo Buttari </B> 
+<BR>
+University of Rome ``Tor Vergata'', Italy
+<BR>
+<BR>
+<BR>
+Software version: 2.3
+<BR>
+July 24, 2008
+
+         <BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"></A>
+
+<UL>
+<LI><A NAME="tex2html33"
+  HREF="node1.html">Contents</A>
+<LI><A NAME="tex2html34"
+  HREF="node2.html">Introduction</A>
+<LI><A NAME="tex2html35"
+  HREF="node3.html">General overview</A>
+<UL>
+<LI><A NAME="tex2html36"
+  HREF="node4.html">Basic Nomenclature</A>
+<LI><A NAME="tex2html37"
+  HREF="node5.html">Library contents</A>
+<LI><A NAME="tex2html38"
+  HREF="node6.html">Application structure</A>
+<LI><A NAME="tex2html39"
+  HREF="node7.html">Programming model</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html40"
+  HREF="node8.html">Data Structures</A>
+<UL>
+<LI><A NAME="tex2html41"
+  HREF="node9.html">Descriptor data structure</A>
+<UL>
+<LI><A NAME="tex2html42"
+  HREF="node10.html">Named Constants</A>
+</UL>
+<LI><A NAME="tex2html43"
+  HREF="node11.html">Sparse Matrix data structure</A>
+<UL>
+<LI><A NAME="tex2html44"
+  HREF="node12.html">Named Constants</A>
+</UL>
+<LI><A NAME="tex2html45"
+  HREF="node13.html">Preconditioner data structure</A>
+<LI><A NAME="tex2html46"
+  HREF="node14.html">Data structure query routines</A>
+<UL>
+<LI><A NAME="tex2html47"
+  HREF="node15.html">psb_cd_get_local_rows -- Get number of local rows</A>
+<LI><A NAME="tex2html48"
+  HREF="node16.html">psb_cd_get_local_cols -- Get number of local cols</A>
+<LI><A NAME="tex2html49"
+  HREF="node17.html">psb_cd_get_global_rows -- Get number of global rows</A>
+<LI><A NAME="tex2html50"
+  HREF="node18.html">psb_cd_get_global_cols -- Get number of global cols</A>
+</UL>
+<LI><A NAME="tex2html51"
+  HREF="node19.html">
+<DIV ALIGN="LEFT">
+psb_cd_get_context--Get communication context 
+</DIV></A>
+<UL>
+<LI><A NAME="tex2html52"
+  HREF="node20.html">psb_cd_get_large_threshold -- Get threshold for
+  index mapping switch</A>
+<LI><A NAME="tex2html53"
+  HREF="node21.html">psb_cd_set_large_threshold -- Set threshold for
+  index mapping switch</A>
+<LI><A NAME="tex2html54"
+  HREF="node22.html">psb_sp_get_nrows -- Get number of  rows in a sparse
+  matrix</A>
+<LI><A NAME="tex2html55"
+  HREF="node23.html">psb_sp_get_ncols -- Get number of  columns in a
+  sparse matrix</A>
+<LI><A NAME="tex2html56"
+  HREF="node24.html">psb_sp_get_nnzeros -- Get number of nonzero elements
+  in a sparse matrix</A>
+</UL>
+</UL>
+<BR>
+<LI><A NAME="tex2html57"
+  HREF="node25.html">Computational routines</A>
+<UL>
+<LI><A NAME="tex2html58"
+  HREF="node26.html">psb_geaxpby -- General Dense Matrix Sum</A>
+<LI><A NAME="tex2html59"
+  HREF="node27.html">psb_gedot -- Dot Product</A>
+<LI><A NAME="tex2html60"
+  HREF="node28.html">psb_gedots -- Generalized Dot Product</A>
+<LI><A NAME="tex2html61"
+  HREF="node29.html">psb_geamax -- Infinity-Norm of Vector</A>
+<LI><A NAME="tex2html62"
+  HREF="node30.html">psb_geamaxs -- Generalized Infinity Norm</A>
+<LI><A NAME="tex2html63"
+  HREF="node31.html">psb_geasum -- 1-Norm of Vector</A>
+<LI><A NAME="tex2html64"
+  HREF="node32.html">psb_geasums -- Generalized 1-Norm of Vector</A>
+<LI><A NAME="tex2html65"
+  HREF="node33.html">psb_genrm2s -- Generalized 1-Norm of Vector</A>
+<LI><A NAME="tex2html66"
+  HREF="node34.html">psb_spnrmi -- Infinity Norm of Sparse Matrix</A>
+<LI><A NAME="tex2html67"
+  HREF="node35.html">psb_spmm -- Sparse Matrix by Dense Matrix Product</A>
+<LI><A NAME="tex2html68"
+  HREF="node36.html">psb_spsm -- Triangular System Solve</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html69"
+  HREF="node37.html">Communication routines</A>
+<UL>
+<LI><A NAME="tex2html70"
+  HREF="node38.html">psb_halo -- Halo Data Communication</A>
+<LI><A NAME="tex2html71"
+  HREF="node39.html">psb_ovrl -- Overlap Update</A>
+<LI><A NAME="tex2html72"
+  HREF="node40.html">psb_gather -- Gather Global Dense Matrix</A>
+<LI><A NAME="tex2html73"
+  HREF="node41.html">psb_scatter -- Scatter Global Dense Matrix</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html74"
+  HREF="node42.html">Data management routines</A>
+<UL>
+<LI><A NAME="tex2html75"
+  HREF="node43.html">psb_cdall -- Allocates a communication descriptor</A>
+<LI><A NAME="tex2html76"
+  HREF="node44.html">psb_cdins -- Communication descriptor insert routine</A>
+<LI><A NAME="tex2html77"
+  HREF="node45.html">psb_cdasb -- Communication descriptor assembly routine</A>
+<LI><A NAME="tex2html78"
+  HREF="node46.html">psb_cdcpy -- Copies a communication descriptor</A>
+<LI><A NAME="tex2html79"
+  HREF="node47.html">psb_cdfree -- Frees a communication descriptor</A>
+<LI><A NAME="tex2html80"
+  HREF="node48.html">psb_cdbldext -- Build an extended  communication
+  descriptor</A>
+<LI><A NAME="tex2html81"
+  HREF="node49.html">psb_spall -- Allocates a sparse matrix</A>
+<LI><A NAME="tex2html82"
+  HREF="node50.html">psb_spins -- Insert a cloud of elements into a sparse
+  matrix</A>
+<LI><A NAME="tex2html83"
+  HREF="node51.html">psb_spasb -- Sparse matrix assembly routine</A>
+<LI><A NAME="tex2html84"
+  HREF="node52.html">psb_spfree -- Frees a sparse matrix</A>
+<LI><A NAME="tex2html85"
+  HREF="node53.html">psb_sprn -- Reinit sparse matrix structure for psblas
+  routines.</A>
+<LI><A NAME="tex2html86"
+  HREF="node54.html">psb_geall -- Allocates a dense matrix</A>
+<LI><A NAME="tex2html87"
+  HREF="node55.html">psb_geins -- Dense matrix insertion routine</A>
+<LI><A NAME="tex2html88"
+  HREF="node56.html">psb_geasb -- Assembly a dense matrix</A>
+<LI><A NAME="tex2html89"
+  HREF="node57.html">psb_gefree -- Frees a dense matrix</A>
+<LI><A NAME="tex2html90"
+  HREF="node58.html">psb_gelp -- Applies a left permutation to a dense
+  matrix</A>
+<LI><A NAME="tex2html91"
+  HREF="node59.html">psb_glob_to_loc -- Global to local indices
+  convertion</A>
+<LI><A NAME="tex2html92"
+  HREF="node60.html">psb_loc_to_glob -- Local to global indices
+  conversion</A>
+<LI><A NAME="tex2html93"
+  HREF="node61.html">psb_is_owned </A>
+<LI><A NAME="tex2html94"
+  HREF="node62.html">psb_owned_index </A>
+<LI><A NAME="tex2html95"
+  HREF="node63.html">psb_is_local </A>
+<LI><A NAME="tex2html96"
+  HREF="node64.html">psb_local_index </A>
+<LI><A NAME="tex2html97"
+  HREF="node65.html">psb_get_boundary -- Extract list of boundary elements</A>
+<LI><A NAME="tex2html98"
+  HREF="node66.html">psb_get_overlap -- Extract list of overlap elements</A>
+<LI><A NAME="tex2html99"
+  HREF="node67.html">psb_sp_getrow -- Extract row(s) from a sparse matrix</A>
+<LI><A NAME="tex2html100"
+  HREF="node68.html">psb_sizeof -- Memory occupation</A>
+<LI><A NAME="tex2html101"
+  HREF="node69.html">Sorting utilities</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html102"
+  HREF="node70.html">Parallel environment routines</A>
+<UL>
+<LI><A NAME="tex2html103"
+  HREF="node71.html">psb_init -- Initializes PSBLAS parallel environment</A>
+<LI><A NAME="tex2html104"
+  HREF="node72.html">psb_info -- Return information about  PSBLAS parallel
+  environment</A>
+<LI><A NAME="tex2html105"
+  HREF="node73.html">psb_exit -- Exit from  PSBLAS parallel environment</A>
+<LI><A NAME="tex2html106"
+  HREF="node74.html">psb_get_mpicomm -- Get the MPI communicator</A>
+<LI><A NAME="tex2html107"
+  HREF="node75.html">psb_get_rank -- Get the MPI rank</A>
+<LI><A NAME="tex2html108"
+  HREF="node76.html">psb_wtime -- Wall clock timing</A>
+<LI><A NAME="tex2html109"
+  HREF="node77.html">psb_barrier -- Sinchronization point  parallel
+  environment</A>
+<LI><A NAME="tex2html110"
+  HREF="node78.html">psb_abort -- Abort a computation</A>
+<LI><A NAME="tex2html111"
+  HREF="node79.html">psb_bcast -- Broadcast data</A>
+<LI><A NAME="tex2html112"
+  HREF="node80.html">psb_sum -- Global sum</A>
+<LI><A NAME="tex2html113"
+  HREF="node81.html">psb_max -- Global maximum</A>
+<LI><A NAME="tex2html114"
+  HREF="node82.html">psb_min -- Global minimum</A>
+<LI><A NAME="tex2html115"
+  HREF="node83.html">psb_amx -- Global maximum absolute value</A>
+<LI><A NAME="tex2html116"
+  HREF="node84.html">psb_amn -- Global minimum absolute value</A>
+<LI><A NAME="tex2html117"
+  HREF="node85.html">psb_snd -- Send data</A>
+<LI><A NAME="tex2html118"
+  HREF="node86.html">psb_rcv -- Receive data</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html119"
+  HREF="node87.html">Error handling</A>
+<UL>
+<LI><A NAME="tex2html120"
+  HREF="node88.html">psb_errpush -- Pushes an error code onto the error
+  stack</A>
+<LI><A NAME="tex2html121"
+  HREF="node89.html">psb_error -- Prints the error stack content and aborts
+  execution</A>
+<LI><A NAME="tex2html122"
+  HREF="node90.html">psb_set_errverbosity -- Sets the verbosity of error
+  messages.</A>
+<LI><A NAME="tex2html123"
+  HREF="node91.html">psb_set_erraction -- Set the type of action to be
+  taken  upon error condition.</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html124"
+  HREF="node92.html">Utilities</A>
+<UL>
+<LI><A NAME="tex2html125"
+  HREF="node93.html">hb_read -- Read a sparse matrix from a file in the
+  Harwell-Boeing format</A>
+<LI><A NAME="tex2html126"
+  HREF="node94.html">hb_write -- Write a sparse matrix to a  file
+  in the Harwell-Boeing format</A>
+<LI><A NAME="tex2html127"
+  HREF="node95.html">mm_mat_read -- Read a sparse matrix from a
+  file in the MatrixMarket format</A>
+<LI><A NAME="tex2html128"
+  HREF="node96.html">mm_vet_read -- Read a dense vector from a
+  file in the MatrixMarket format</A>
+<LI><A NAME="tex2html129"
+  HREF="node97.html">mm_mat_write -- Write a sparse matrix to a
+  file in the MatrixMarket format</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html130"
+  HREF="node98.html">Preconditioner routines</A>
+<UL>
+<LI><A NAME="tex2html131"
+  HREF="node99.html">psb_precinit -- Initialize a  preconditioner</A>
+<LI><A NAME="tex2html132"
+  HREF="node100.html">psb_precbld -- Builds a preconditioner</A>
+<LI><A NAME="tex2html133"
+  HREF="node101.html">psb_precaply -- Preconditioner application routine</A>
+<LI><A NAME="tex2html134"
+  HREF="node102.html">psb_precdescr -- Prints a description of current
+  preconditioner</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html135"
+  HREF="node103.html">Iterative Methods</A>
+<UL>
+<LI><A NAME="tex2html136"
+  HREF="node104.html">psb_krylov  -- Krylov Methods Driver
+      Routine</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html137"
+  HREF="node105.html">Bibliography</A>
+<LI><A NAME="tex2html138"
+  HREF="node106.html">About this document ...</A>
+</UL>
+<!--End of Table of Child-Links-->
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node1.html b/docs/html/node1.html
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--- /dev/null
+++ b/docs/html/node1.html
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>Contents</TITLE>
+<META NAME="description" CONTENT="Contents">
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+<META NAME="resource-type" CONTENT="document">
+<META NAME="distribution" CONTENT="global">
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+<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
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+<LINK REL="STYLESHEET" HREF="userhtml.css">
+
+<LINK REL="next" HREF="node2.html">
+<LINK REL="previous" HREF="userhtml.html">
+<LINK REL="up" HREF="userhtml.html">
+<LINK REL="next" HREF="node2.html">
+</HEAD>
+
+<BODY >
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+<A NAME="tex2html147"
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+<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
+ SRC="file:/usr/share/latex2html/icons/next.png"></A> 
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+ SRC="file:/usr/share/latex2html/icons/up.png"></A> 
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+  HREF="userhtml.html">
+<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous"
+ SRC="file:/usr/share/latex2html/icons/prev.png"></A>   
+<BR>
+<B> Next:</B> <A NAME="tex2html148"
+  HREF="node2.html">Introduction</A>
+<B> Up:</B> <A NAME="tex2html146"
+  HREF="userhtml.html">userhtml</A>
+<B> Previous:</B> <A NAME="tex2html140"
+  HREF="userhtml.html">userhtml</A>
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+<BR>
+
+<H2><A NAME="SECTION00010000000000000000">
+Contents</A>
+</H2>
+<!--Table of Contents-->
+
+<UL>
+<LI><A NAME="tex2html149"
+  HREF="node2.html">Introduction</A>
+<LI><A NAME="tex2html150"
+  HREF="node3.html">General overview</A>
+<UL>
+<LI><A NAME="tex2html151"
+  HREF="node4.html">Basic Nomenclature</A>
+<LI><A NAME="tex2html152"
+  HREF="node5.html">Library contents</A>
+<LI><A NAME="tex2html153"
+  HREF="node6.html">Application structure</A>
+<LI><A NAME="tex2html154"
+  HREF="node7.html">Programming model</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html155"
+  HREF="node8.html">Data Structures</A>
+<UL>
+<LI><A NAME="tex2html156"
+  HREF="node9.html">Descriptor data structure</A>
+<LI><A NAME="tex2html157"
+  HREF="node11.html">Sparse Matrix data structure</A>
+<LI><A NAME="tex2html158"
+  HREF="node13.html">Preconditioner data structure</A>
+<LI><A NAME="tex2html159"
+  HREF="node14.html">Data structure query routines</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html160"
+  HREF="node25.html">Computational routines</A>
+<LI><A NAME="tex2html161"
+  HREF="node37.html">Communication routines</A>
+<LI><A NAME="tex2html162"
+  HREF="node42.html">Data management routines</A>
+<LI><A NAME="tex2html163"
+  HREF="node70.html">Parallel environment routines</A>
+<LI><A NAME="tex2html164"
+  HREF="node87.html">Error handling</A>
+<LI><A NAME="tex2html165"
+  HREF="node92.html">Utilities</A>
+<LI><A NAME="tex2html166"
+  HREF="node98.html">Preconditioner routines</A>
+<LI><A NAME="tex2html167"
+  HREF="node103.html">Iterative Methods</A>
+<LI><A NAME="tex2html168"
+  HREF="node105.html">Bibliography</A>
+</UL>
+<!--End of Table of Contents-->
+<P>
+
+<P>
+      
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node10.html b/docs/html/node10.html
new file mode 100644
index 00000000..5f2793b4
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+++ b/docs/html/node10.html
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>Named Constants</TITLE>
+<META NAME="description" CONTENT="Named Constants">
+<META NAME="keywords" CONTENT="userhtml">
+<META NAME="resource-type" CONTENT="document">
+<META NAME="distribution" CONTENT="global">
+
+<META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1">
+<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
+
+<LINK REL="STYLESHEET" HREF="userhtml.css">
+
+<LINK REL="previous" HREF="node9.html">
+<LINK REL="up" HREF="node9.html">
+<LINK REL="next" HREF="node11.html">
+</HEAD>
+
+<BODY >
+<!--Navigation Panel-->
+<A NAME="tex2html292"
+  HREF="node11.html">
+<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
+ SRC="file:/usr/share/latex2html/icons/next.png"></A> 
+<A NAME="tex2html288"
+  HREF="node9.html">
+<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up"
+ SRC="file:/usr/share/latex2html/icons/up.png"></A> 
+<A NAME="tex2html284"
+  HREF="node9.html">
+<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous"
+ SRC="file:/usr/share/latex2html/icons/prev.png"></A> 
+<A NAME="tex2html290"
+  HREF="node1.html">
+<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents"
+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html293"
+  HREF="node11.html">Sparse Matrix data structure</A>
+<B> Up:</B> <A NAME="tex2html289"
+  HREF="node9.html">Descriptor data structure</A>
+<B> Previous:</B> <A NAME="tex2html285"
+  HREF="node9.html">Descriptor data structure</A>
+ &nbsp; <B>  <A NAME="tex2html291"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H3><A NAME="SECTION00041100000000000000"></A>
+<A NAME="sec:cd_constants"></A>
+<BR>
+Named Constants
+</H3>
+<DL>
+<DT><STRONG>psb_none_</STRONG></DT>
+<DD>Generic no-op;
+</DD>
+<DT><STRONG>psb_nohalo_</STRONG></DT>
+<DD>Do not fetch halo elements;
+</DD>
+<DT><STRONG>psb_halo_</STRONG></DT>
+<DD>Fetch halo elements from neighbouring processes;
+</DD>
+<DT><STRONG>psb_sum_</STRONG></DT>
+<DD>Sum overlapped elements
+</DD>
+<DT><STRONG>psb_avg_</STRONG></DT>
+<DD>Average overlapped elements
+</DD>
+<DT><STRONG>psb_comm_halo_</STRONG></DT>
+<DD>Exchange data based on the <code>halo_index</code>
+  list;
+</DD>
+<DT><STRONG>psb_comm_ext_</STRONG></DT>
+<DD>Exchange data based on the <code>ext_index</code>
+  list;
+</DD>
+<DT><STRONG>psb_comm_ovr_</STRONG></DT>
+<DD>Exchange data based on the <code>ovrlap_index</code>
+  list;
+</DD>
+<DT><STRONG>psb_comm_mov_</STRONG></DT>
+<DD>Exchange data based on the <code>ovr_mst_idx</code>
+  list;
+
+<P>
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node100.html b/docs/html/node100.html
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
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+
+<H2><A NAME="SECTION000112000000000000000">
+psb_precbld -- Builds a preconditioner</A>
+</H2>
+
+<P>
+<PRE>
+call psb_precbld(a, desc_a, prec, info)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the system sparse matrix.
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>, target.
+<BR>
+Specified as: a sparse matrix data structure spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>prec</STRONG></DT>
+<DD>the preconditioner.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an already initialized precondtioner data structure precdata<TT>psb_prec_type</TT>
+<BR></DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the problem communication descriptor. 
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>, target.
+<BR>
+Specified as: a communication descriptor data structure descdata<TT>psb_desc_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>prec</STRONG></DT>
+<DD>the preconditioner.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a precondtioner data structure precdata<TT>psb_prec_type</TT>
+<BR></DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node101.html b/docs/html/node101.html
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+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<TITLE>psb_precaply -- Preconditioner application routine</TITLE>
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+
+<H2><A NAME="SECTION000113000000000000000">
+psb_precaply -- Preconditioner application routine</A>
+</H2>
+
+<P>
+<PRE>
+call psb_precaply(prec,x,y,desc_a,info,trans,work)
+call psb_precaply(prec,x,desc_a,info,trans)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>prec</STRONG></DT>
+<DD>the preconditioner.
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a preconditioner data structure precdata<TT>psb_prec_type</TT>.
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>the source vector.
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a double precision array.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the problem communication descriptor.
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a communication data structure descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>trans</STRONG></DT>
+<DD>Scope:  
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a character.
+</DD>
+<DT><STRONG>work</STRONG></DT>
+<DD>an optional work space
+Scope: <B>local</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a double precision array.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>y</STRONG></DT>
+<DD>the destination vector.
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a double precision array.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node102.html b/docs/html/node102.html
new file mode 100644
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+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_precdescr -- Prints a description of current preconditioner</TITLE>
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+<H2><A NAME="SECTION000114000000000000000">
+psb_precdescr -- Prints a description of current
+  preconditioner</A>
+</H2>
+
+<P>
+<PRE>
+call psb_precdescr(prec)
+call psb_precdescr(prec, iout)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>prec</STRONG></DT>
+<DD>the preconditioner.
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a preconditioner data structure precdata<TT>psb_prec_type</TT>.
+</DD>
+<DT><STRONG>iout</STRONG></DT>
+<DD>output unit.
+Scope: <B>local</B> 
+<BR>
+Type: <B>optiona</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer number. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node103.html b/docs/html/node103.html
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>Iterative Methods</TITLE>
+<META NAME="description" CONTENT="Iterative Methods">
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+<B> Next:</B> <A NAME="tex2html1468"
+  HREF="node104.html">psb_krylov   Krylov</A>
+<B> Up:</B> <A NAME="tex2html1464"
+  HREF="userhtml.html">userhtml</A>
+<B> Previous:</B> <A NAME="tex2html1458"
+  HREF="node102.html">psb_precdescr   Prints</A>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H1><A NAME="SECTION000120000000000000000"></A>
+<A NAME="sec:methods"></A>
+<BR>
+Iterative Methods
+</H1>
+
+<P>
+In this chapter we provide routines for preconditioners and iterative
+methods. The interfaces for Krylov subspace methods are available in
+the module <code>psb_krylov_mod</code>.
+
+<P>
+<BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
+
+<UL>
+<LI><A NAME="tex2html1469"
+  HREF="node104.html">psb_krylov  -- Krylov Methods Driver
+      Routine</A>
+</UL>
+<!--End of Table of Child-Links-->
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+
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diff --git a/docs/html/node104.html b/docs/html/node104.html
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+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<HEAD>
+<TITLE>psb_krylov -- Krylov Methods Driver Routine</TITLE>
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+<BR>
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+<B> Up:</B> <A NAME="tex2html1475"
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+  HREF="node103.html">Iterative Methods</A>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000121000000000000000"></A><A NAME="krylov"></A>
+<BR>
+psb_krylov  -- Krylov Methods Driver
+      Routine
+</H2>
+
+<P>
+This subroutine is a driver that provides a general interface for all
+the Krylov-Subspace family methods implemented in PSBLAS version 2. 
+
+<P>
+The stopping criterion is the normwise backward error, in the infinity
+norm, i.e. the iteration is stopped when 
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+err = \frac{\|r_i\|}{(\|A\|\|x_i\|+\|b\|)} < eps
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="204" HEIGHT="44" BORDER="0"
+ SRC="img137.png"
+ ALT="\begin{displaymath}err = \frac{\Vert r_i\Vert}{(\Vert A\Vert\Vert x_i\Vert+\Vert b\Vert)} &lt; eps \end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+or the 2-norm residual reduction
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+err = \frac{\|r_i\|}{\|b\|_2} < eps
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="121" HEIGHT="44" BORDER="0"
+ SRC="img138.png"
+ ALT="\begin{displaymath}err = \frac{\Vert r_i\Vert}{\Vert b\Vert _2} &lt; eps \end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+according to the value passed through the  istop argument (see
+later). In the above formulae, <IMG
+ WIDTH="19" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img139.png"
+ ALT="$x_i$"> is the tentative solution and
+<IMG
+ WIDTH="90" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img140.png"
+ ALT="$r_i=b-Ax_i$"> the corresponding residual at the <IMG
+ WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img3.png"
+ ALT="$i$">-th iteration. 
+
+<P>
+<PRE>
+call psb_krylov(method,a,prec,b,x,eps,desc_a,info,&amp;
+     &amp; itmax,iter,err,itrace,irst,istop,cond)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>method</STRONG></DT>
+<DD>a string that defines the iterative method to be
+  used. Supported values are:
+  <DL>
+<DT><STRONG>CG:</STRONG></DT>
+<DD>the Conjugate Gradient method;
+  
+</DD>
+<DT><STRONG>CGS:</STRONG></DT>
+<DD>the Conjugate Gradient Stabilized method;
+
+<P>
+</DD>
+<DT><STRONG>BICG:</STRONG></DT>
+<DD>the Bi-Conjugate Gradient method;
+  
+</DD>
+<DT><STRONG>BICGSTAB:</STRONG></DT>
+<DD>the Bi-Conjugate Gradient Stabilized method;
+  
+</DD>
+<DT><STRONG>BICGSTABL:</STRONG></DT>
+<DD>the Bi-Conjugate Gradient Stabilized method with restarting;
+  
+</DD>
+<DT><STRONG>RGMRES:</STRONG></DT>
+<DD>the Generalized Minimal Residual method with restarting.
+  
+</DD>
+</DL>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the local portion of global sparse matrix
+<IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>prec</STRONG></DT>
+<DD>The data structure containing the preconditioner.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type precdata<TT>psb_prec_type</TT>.
+</DD>
+<DT><STRONG>b</STRONG></DT>
+<DD>The RHS vector. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a rank one array.
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>The initial guess. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a rank one array.
+</DD>
+<DT><STRONG>eps</STRONG></DT>
+<DD>The stopping tolerance. 
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a real number. 
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>itmax</STRONG></DT>
+<DD>The maximum number of iterations to perform.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Default: <IMG
+ WIDTH="100" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img141.png"
+ ALT="$itmax = 1000$">.
+<BR>
+Specified as: an integer variable <IMG
+ WIDTH="75" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
+ SRC="img142.png"
+ ALT="$itmax \ge 1$">.
+</DD>
+<DT><STRONG>itrace</STRONG></DT>
+<DD>If <IMG
+ WIDTH="29" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img103.png"
+ ALT="$&gt;0$"> print out an informational message about
+  convergence  every <IMG
+ WIDTH="46" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img143.png"
+ ALT="$itrace$"> iterations.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR></DD>
+<DT><STRONG>irst</STRONG></DT>
+<DD>An integer specifying the restart parameter.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Values: <IMG
+ WIDTH="59" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
+ SRC="img144.png"
+ ALT="$irst&gt;0$">. This is employed for the BiCGSTABL or RGMRES
+methods, otherwise it is ignored. 
+
+<P>
+</DD>
+<DT><STRONG>istop</STRONG></DT>
+<DD>An integer specifying the stopping criterion.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Values: 1: use the normwise backward error, 2: use the scaled 2-norm
+of the residual. Default: 2. 
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>The computed solution. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a rank one array.
+</DD>
+<DT><STRONG>iter</STRONG></DT>
+<DD>The number of iterations performed.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Returned  as: an integer variable.
+</DD>
+<DT><STRONG>err</STRONG></DT>
+<DD>The convergence estimate on exit.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Returned  as: a real number.
+</DD>
+<DT><STRONG>cond</STRONG></DT>
+<DD>An estimate of the condition number of matrix <IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">; only
+  available with the <IMG
+ WIDTH="29" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img145.png"
+ ALT="$CG$"> method.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Returned  as: a real number.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+
+<P>
+
+<P>
+<HR>
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+original version by:  Nikos Drakos, CBLU, University of Leeds
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+* with significant contributions from:
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+  HREF="node104.html">psb_krylov   Krylov</A>
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+<!--End of Navigation Panel-->
+ 
+<H2><A NAME="SECTION000130000000000000000">
+Bibliography</A>
+</H2><DL COMPACT><DD>
+<P>
+<P></P><DT><A NAME="PARA04FOREST">1</A>
+<DD>
+G.&nbsp;Bella, S.&nbsp;Filippone, A.&nbsp;De Maio and M.&nbsp;Testa,
+<EM>A Simulation Model for Forest Fires</EM>,
+in J.&nbsp;Dongarra, K.&nbsp;Madsen, J.&nbsp;Wasniewski, editors,
+Proceedings of PARA&nbsp;04 Workshop on State of the Art
+in Scientific Computing, pp.&nbsp;546-553, Lecture Notes in Computer Science,
+Springer, 2005.
+<P></P><DT><A NAME="2007d">2</A>
+<DD> A. Buttari, D. di Serafino, P. D'Ambra, S. Filippone,<BR>
+2LEV-D2P4: a package of high-performance preconditioners,<BR>
+Applicable Algebra in Engineering, Communications and Computing, 
+Volume 18, Number 3, May, 2007, pp.  223-239
+<P></P><DT><A NAME="2007c">3</A>
+<DD>  P. D'Ambra, S. Filippone,  D. Di Serafino<BR>
+On the Development of PSBLAS-based Parallel Two-level Schwarz Preconditioners
+<BR>
+Applied Numerical Mathematics, Elsevier Science, 
+Volume 57, Issues 11-12, November-December 2007, Pages 1181-1196.
+
+<P>
+<P></P><DT><A NAME="BLAS2">4</A>
+<DD>
+ Dongarra, J. J.,  DuCroz, J.,  Hammarling, S. and Hanson, R.,
+An Extended Set of Fortran Basic Linear Algebra Subprograms,
+ACM Trans. Math. Softw. vol.&nbsp;14, 1-17, 1988.
+<P></P><DT><A NAME="BLAS3">5</A>
+<DD>
+  Dongarra, J., DuCroz, J., Hammarling, S. and Duff, I.,
+A  Set of level 3 Basic Linear Algebra Subprograms,
+ACM Trans. Math. Softw. vol.&nbsp;16, 1-17, 1990.
+<P></P><DT><A NAME="BLACS">6</A>
+<DD>
+J.&nbsp;J.&nbsp;Dongarra and R.&nbsp;C.&nbsp;Whaley,
+<EM>A User's Guide to the BLACS v.&nbsp;1.1</EM>,
+Lapack Working Note 94, Tech. Rep. UT-CS-95-281, University of
+Tennessee, March 1995 (updated May 1997).
+<P></P><DT><A NAME="sblas97">7</A>
+<DD>
+I.&nbsp;Duff, M.&nbsp;Marrone, G.&nbsp;Radicati and C.&nbsp;Vittoli,
+<EM>Level 3 Basic Linear Algebra Subprograms for Sparse Matrices: 
+a User Level Interface</EM>,
+ACM Transactions on Mathematical Software, 23(3), pp.&nbsp;379-401, 1997.
+<P></P><DT><A NAME="sblas02">8</A>
+<DD>
+I.&nbsp;Duff, M.&nbsp;Heroux and R.&nbsp;Pozo,
+<EM>An Overview of the Sparse Basic Linear
+Algebra Subprograms: the New Standard from the BLAS Technical Forum</EM>,
+ACM Transactions on Mathematical Software, 28(2), pp.&nbsp;239-267, 2002.
+<P></P><DT><A NAME="PSBLAS">9</A>
+<DD>
+S.&nbsp;Filippone and M.&nbsp;Colajanni, 
+<EM>PSBLAS: A Library for Parallel Linear Algebra
+Computation on Sparse Matrices</EM>,
+<BR>
+ACM Transactions on Mathematical Software, 26(4), pp.&nbsp;527-550, 2000.
+<P></P><DT><A NAME="KIVA3PSBLAS">10</A>
+<DD>
+S.&nbsp;Filippone, P.&nbsp;D'Ambra, M.&nbsp;Colajanni,
+<EM>Using a Parallel Library of Sparse Linear Algebra in a Fluid Dynamics 
+Applications Code on Linux Clusters</EM>,
+in G.&nbsp;Joubert, A.&nbsp;Murli, F.&nbsp;Peters, M.&nbsp;Vanneschi, editors,
+Parallel Computing - Advances &amp; Current Issues,
+pp.&nbsp;441-448, Imperial College Press, 2002. 
+<P></P><DT><A NAME="METIS">11</A>
+<DD>
+Karypis, G. and Kumar, V.,
+<EM>METIS: Unstructured Graph Partitioning and Sparse Matrix
+  Ordering System</EM>.
+Minneapolis, MN 55455: University of Minnesota, Department of
+  Computer Science, 1995. 
+Internet Address: <code>http://www.cs.umn.edu/~karypis</code>.
+<P></P><DT><A NAME="BLAS1">12</A>
+<DD>
+Lawson, C.,  Hanson, R., Kincaid, D. and Krogh, F.,
+   Basic Linear Algebra Subprograms for Fortran usage,
+ACM Trans. Math. Softw. vol.&nbsp;5, 38-329, 1979.
+
+<P>
+<P></P><DT><A NAME="machiels">13</A>
+<DD>
+Machiels, L. and Deville, M.
+<EM>Fortran 90: An entry to object-oriented programming for the solution
+  of partial differential equations.</EM>
+ACM Trans. Math. Softw. vol.&nbsp;23, 32-49.
+<P></P><DT><A NAME="metcalf">14</A>
+<DD>
+Metcalf, M., Reid, J. and Cohen, M.
+<EM>Fortran 95/2003 explained.</EM>
+Oxford University Press, 2004.
+<P></P><DT><A NAME="MPI1">15</A>
+<DD>
+M.&nbsp;Snir, S.&nbsp;Otto, S.&nbsp;Huss-Lederman, D.&nbsp;Walker and J.&nbsp;Dongarra,
+<EM>MPI: The Complete Reference. Volume 1 - The MPI Core</EM>, second edition,
+MIT Press, 1998.
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
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+<H1><A NAME="SECTION000840000000000000000">
+psb_precinit -- Initialize a  preconditioner</A>
+</H1>
+
+<P>
+ifstarssyntaxsyntaxcall psb_precinitprec, ptype, info
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>ptype</STRONG></DT>
+<DD>the type of preconditioner. 
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a character string, see usage notes.
+</DD>
+<DT><STRONG><B>On Exit</B></STRONG></DT>
+<DD><P>
+</DD>
+<DT><STRONG>prec</STRONG></DT>
+<DD>Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a preconditioner data structure precdata<TT>psb_prec_type</TT>.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Scope: <B>global</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Error code: if no error, 0 is returned.
+</DD>
+</DL>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+Legal inputs to this subroutine are interpreted depending on the
+<IMG
+ WIDTH="42" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img135.png"
+ ALT="$ptype$"> string as follows<A NAME="tex2html28"
+  HREF="footnode.html#foot6821"><SUP>3</SUP></A>:
+<DL>
+<DT><STRONG>NONE</STRONG></DT>
+<DD>No preconditioning, i.e. the preconditioner is just a copy
+  operator.
+</DD>
+<DT><STRONG>DIAG</STRONG></DT>
+<DD>Diagonal scaling; each entry of the input vector is
+  multiplied by the reciprocal of the sum of the absolute values of
+  the coefficients in the corresponding row of matrix  <IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">;
+</DD>
+<DT><STRONG>BJAC</STRONG></DT>
+<DD>Precondition by a  factorization of the
+  block-diagonal of matrix <IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">, where block boundaries are determined
+  by the data allocation boundaries for each process; requires no
+  communication. Only the incomplete factorization <IMG
+ WIDTH="56" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img136.png"
+ ALT="$ILU(0)$"> is
+  currently implemented.  
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node108.html b/docs/html/node108.html
new file mode 100644
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--- /dev/null
+++ b/docs/html/node108.html
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<TITLE>psb_precbld -- Builds a preconditioner</TITLE>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H1><A NAME="SECTION000850000000000000000">
+psb_precbld -- Builds a preconditioner</A>
+</H1>
+
+<P>
+ifstarssyntaxsyntaxcall psb_precblda, desc_a, prec, info
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the system sparse matrix.
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>, target.
+<BR>
+Specified as: a sparse matrix data structure spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>prec</STRONG></DT>
+<DD>the preconditioner.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an already initialized precondtioner data structure precdata<TT>psb_prec_type</TT>
+<BR></DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the problem communication descriptor. 
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>, target.
+<BR>
+Specified as: a communication descriptor data structure descdata<TT>psb_desc_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>prec</STRONG></DT>
+<DD>the preconditioner.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a precondtioner data structure precdata<TT>psb_prec_type</TT>
+<BR></DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node109.html b/docs/html/node109.html
new file mode 100644
index 00000000..8ef0c0fd
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+++ b/docs/html/node109.html
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_precaply -- Preconditioner application routine</TITLE>
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+<!--End of Navigation Panel-->
+
+<H1><A NAME="SECTION000860000000000000000">
+psb_precaply -- Preconditioner application routine</A>
+</H1>
+
+<P>
+ifstarssyntaxsyntaxcall psb_precaplyprec,x,y,desc_a,info,trans,work
+ifstarssyntaxsyntax*call psb_precaplyprec,x,desc_a,info,trans
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>prec</STRONG></DT>
+<DD>the preconditioner.
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a preconditioner data structure precdata<TT>psb_prec_type</TT>.
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>the source vector.
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a double precision array.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the problem communication descriptor.
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a communication data structure descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>trans</STRONG></DT>
+<DD>Scope:  
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a character.
+</DD>
+<DT><STRONG>work</STRONG></DT>
+<DD>an optional work space
+Scope: <B>local</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a double precision array.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>y</STRONG></DT>
+<DD>the destination vector.
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a double precision array.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node11.html b/docs/html/node11.html
new file mode 100644
index 00000000..81bd77b6
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+++ b/docs/html/node11.html
@@ -0,0 +1,264 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>Sparse Matrix data structure</TITLE>
+<META NAME="description" CONTENT="Sparse Matrix data structure">
+<META NAME="keywords" CONTENT="userhtml">
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+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00042000000000000000"></A>
+<A NAME="sec:spmat"></A>
+<BR>
+Sparse Matrix data structure
+</H2>
+The spdata<TT>psb_spmat_type</TT> data structure
+contains all information about local portion of the sparse matrix and   
+its storage mode. Most  of these fields are set  by the tools
+routines when inserting a new sparse matrix; the user needs only
+choose, if he/she so whishes, a specific matrix storage mode. 
+<BR><DL>
+<DT><STRONG><B>aspk</B></STRONG></DT>
+<DD>Contains values of the local distributed sparse
+matrix.
+<BR>
+Specified as: an allocatable array of rank one of type corresponding
+to matrix entries type.
+</DD>
+<DT><STRONG><B>ia1</B></STRONG></DT>
+<DD>Holds integer information on distributed sparse
+matrix. Actual information will depend on data format used.
+<BR>
+Specified as: an allocatable  integer array of rank one.
+</DD>
+<DT><STRONG><B>ia2</B></STRONG></DT>
+<DD>Holds integer information on distributed sparse
+matrix. Actual information will depend on data format used.
+<BR>
+Specified as: an allocatable  integer array of rank one.
+</DD>
+<DT><STRONG><B>infoa</B></STRONG></DT>
+<DD>On entry can hold auxiliary information on distributed sparse
+matrix.  Actual information will depend on data format used.
+<BR>
+Specified as: an integer array of length <code>psb_ifasize_</code>.
+</DD>
+<DT><STRONG><B>fida</B></STRONG></DT>
+<DD>Defines the format of the distributed sparse matrix.
+<BR>
+Specified as: a string of length 5
+</DD>
+<DT><STRONG><B>descra</B></STRONG></DT>
+<DD>Describe the characteristic of the distributed sparse matrix.
+<BR>
+Specified as: array of character of length 9.
+</DD>
+<DT><STRONG><B>pl</B></STRONG></DT>
+<DD>Specifies the local row permutation of distributed sparse
+matrix. If pl(1) is equal to 0, then there isn't row permutation.
+<BR>
+Specified as: an allocatable integer array of dimension equal to number of local row (matrix_data[psb_n_row_])
+</DD>
+<DT><STRONG><B>pr</B></STRONG></DT>
+<DD>Specifies the local column permutation of distributed sparse
+matrix. If PR(1) is equal to 0, then there isn't columnm permutation.
+<BR>
+Specified as: an allocatable integer array of dimension equal to number of
+local row (matrix_data[psb_n_col_])
+</DD>
+<DT><STRONG><B>m</B></STRONG></DT>
+<DD>Number of rows; if row indices are stored explicitly,
+as in Coordinate Storage, should be greater than or equal to the
+maximum row index actually present in the sparse matrix.
+Specified as: integer variable.
+</DD>
+<DT><STRONG><B>k</B></STRONG></DT>
+<DD>Number of columns; if column indices are stored explicitly,
+as in Coordinate Storage or Compressed Sparse Rows, should be greater
+than or equal to the maximum column  index actually present in the sparse matrix.
+Specified as: integer variable.
+</DD>
+</DL>
+The Fortran&nbsp;95 interface for distributed sparse matrices containing
+double precision real entries is defined as shown in
+figure&nbsp;<A HREF="#fig:spmattype">4</A>. The definitions for single precision and
+complex data are identical except for the <code>real</code> declaration and
+for the kind type parameter.
+
+<DIV ALIGN="CENTER"><A NAME="fig:spmattype"></A><A NAME="620"></A>
+<TABLE>
+<CAPTION ALIGN="BOTTOM"><STRONG>Figure 4:</STRONG>
+    The PSBLAS defined data type that
+    contains a sparse matrix.</CAPTION>
+<TR><TD>
+<BR>
+   
+  <DIV ALIGN="CENTER">
+<!-- MATH
+ $\fbox{\TheSbox}$
+ -->
+<IMG
+ WIDTH="536" HEIGHT="218" ALIGN="MIDDLE" BORDER="0"
+ SRC="img17.png"
+ ALT="\fbox{\TheSbox}">
+</DIV></TD></TR>
+</TABLE>
+</DIV>
+
+<P>
+The following two cases are among the most commonly used: 
+<DL>
+<DT><STRONG>fida=``CSR''</STRONG></DT>
+<DD>Compressed storage by rows. In this case the
+following should hold: 
+
+<OL>
+<LI><code>ia2(i)</code> contains the index of the first element of row
+<code>i</code>; the last element of the sparse matrix is thus stored at
+index <IMG
+ WIDTH="107" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img19.png"
+ ALT="$ia2(m+1)-1$">. It should contain <code>m+1</code> entries in
+nondecreasing order (strictly increasing, if there are no empty rows).
+</LI>
+<LI><code>ia1(j)</code> contains the column index and <code>aspk(j)</code>
+contains the corresponding coefficient value, for all <!-- MATH
+ $ia2(1) \le j
+\le ia2(m+1)-1$
+ -->
+<IMG
+ WIDTH="199" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img20.png"
+ ALT="$ia2(1) \le j
+\le ia2(m+1)-1$">.
+</LI>
+</OL>
+</DD>
+<DT><STRONG>fida=``COO''</STRONG></DT>
+<DD>Coordinate storage. In this case the following
+should hold: 
+
+<OL>
+<LI><code>infoa(1)</code> contains the number of nonzero elements in the
+matrix; 
+</LI>
+<LI>For all <!-- MATH
+ $1 \le j \le infoa(1)$
+ -->
+<IMG
+ WIDTH="123" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img21.png"
+ ALT="$1 \le j \le infoa(1)$">, the coefficient, row index and
+column index are stored into <code>apsk(j)</code>, <code>ia1(j)</code> and
+<code>ia2(j)</code> respectively. 
+</LI>
+</OL>
+</DD>
+</DL>
+A sparse matrix has an associated state, which can take the following
+values:
+<DL>
+<DT><STRONG>Build:</STRONG></DT>
+<DD>State entered after the first allocation, and before the
+  first assembly; in this state it is possible to add nonzero entries.
+</DD>
+<DT><STRONG>Assembled:</STRONG></DT>
+<DD>State entered after the assembly; computations using
+  the sparse matrix, such as matrix-vector products, are only possible
+  in this state;
+</DD>
+<DT><STRONG>Update:</STRONG></DT>
+<DD>State entered after a reinitalization; this is used to
+  handle applications in which the same sparsity pattern is used
+  multiple times with different coefficients. In this state it is only
+  possible to enter coefficients for already existing nonzero entries.
+</DD>
+</DL>
+<BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
+
+<UL>
+<LI><A NAME="tex2html306"
+  HREF="node12.html">Named Constants</A>
+</UL>
+<!--End of Table of Child-Links-->
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+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_precdescr -- Prints a description of current preconditioner</TITLE>
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+<H1><A NAME="SECTION000870000000000000000">
+psb_precdescr -- Prints a description of current
+  preconditioner</A>
+</H1>
+
+<P>
+ifstarssyntaxsyntaxcall psb_precdescrprec
+ifstarssyntaxsyntax*call psb_precdescrprec, iout
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>prec</STRONG></DT>
+<DD>the preconditioner.
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a preconditioner data structure precdata<TT>psb_prec_type</TT>.
+</DD>
+<DT><STRONG>iout</STRONG></DT>
+<DD>output unit.
+Scope: <B>local</B> 
+<BR>
+Type: <B>optiona</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer number. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
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+</HTML>
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+  HREF="node112.html">psb_krylov   Krylov</A>
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+<H1><A NAME="SECTION000880000000000000000"></A>
+<A NAME="sec:methods"></A>
+<BR>
+Iterative Methods
+</H1>
+
+<P>
+In this chapter we provide routines for preconditioners and iterative
+methods. The interfaces for Krylov subspace methods are available in
+the module <code>psb_krylov_mod</code>.
+
+<P>
+<BR><HR>
+
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+<HTML>
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+<TITLE>psb_krylov -- Krylov Methods Driver Routine</TITLE>
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+
+<H1><A NAME="SECTION000890000000000000000"></A><A NAME="krylov"></A>
+<BR>
+psb_krylov  -- Krylov Methods Driver
+      Routine
+</H1>
+
+<P>
+This subroutine is a driver that provides a general interface for all
+the Krylov-Subspace family methods implemented in PSBLAS version 2. 
+
+<P>
+The stopping criterion is the normwise backward error, in the infinity
+norm, i.e. the iteration is stopped when 
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+err = \frac{\|r_i\|}{(\|A\|\|x_i\|+\|b\|)} < eps
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="204" HEIGHT="44" BORDER="0"
+ SRC="img137.png"
+ ALT="\begin{displaymath}err = \frac{\Vert r_i\Vert}{(\Vert A\Vert\Vert x_i\Vert+\Vert b\Vert)} &lt; eps \end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+or the 2-norm residual reduction
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+err = \frac{\|r_i\|}{\|b\|_2} < eps
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="121" HEIGHT="44" BORDER="0"
+ SRC="img138.png"
+ ALT="\begin{displaymath}err = \frac{\Vert r_i\Vert}{\Vert b\Vert _2} &lt; eps \end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+according to the value passed through the  istop argument (see
+later). In the above formulae, <IMG
+ WIDTH="19" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img139.png"
+ ALT="$x_i$"> is the tentative solution and
+<IMG
+ WIDTH="90" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img140.png"
+ ALT="$r_i=b-Ax_i$"> the corresponding residual at the <IMG
+ WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img3.png"
+ ALT="$i$">-th iteration. 
+
+<P>
+ifstarssyntaxsyntaxcall psb_krylovmethod,a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,istop,cond
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>method</STRONG></DT>
+<DD>a string that defines the iterative method to be
+  used. Supported values are:
+  <DL>
+<DT><STRONG>CG:</STRONG></DT>
+<DD>the Conjugate Gradient method;
+  
+</DD>
+<DT><STRONG>CGS:</STRONG></DT>
+<DD>the Conjugate Gradient Stabilized method;
+
+<P>
+</DD>
+<DT><STRONG>BICG:</STRONG></DT>
+<DD>the Bi-Conjugate Gradient method;
+  
+</DD>
+<DT><STRONG>BICGSTAB:</STRONG></DT>
+<DD>the Bi-Conjugate Gradient Stabilized method;
+  
+</DD>
+<DT><STRONG>BICGSTABL:</STRONG></DT>
+<DD>the Bi-Conjugate Gradient Stabilized method with restarting;
+  
+</DD>
+<DT><STRONG>RGMRES:</STRONG></DT>
+<DD>the Generalized Minimal Residual method with restarting.
+  
+</DD>
+</DL>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the local portion of global sparse matrix
+<IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>prec</STRONG></DT>
+<DD>The data structure containing the preconditioner.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type precdata<TT>psb_prec_type</TT>.
+</DD>
+<DT><STRONG>b</STRONG></DT>
+<DD>The RHS vector. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a rank one array.
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>The initial guess. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a rank one array.
+</DD>
+<DT><STRONG>eps</STRONG></DT>
+<DD>The stopping tolerance. 
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a real number. 
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>itmax</STRONG></DT>
+<DD>The maximum number of iterations to perform.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Default: <IMG
+ WIDTH="100" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img141.png"
+ ALT="$itmax = 1000$">.
+<BR>
+Specified as: an integer variable <IMG
+ WIDTH="75" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
+ SRC="img142.png"
+ ALT="$itmax \ge 1$">.
+</DD>
+<DT><STRONG>itrace</STRONG></DT>
+<DD>If <IMG
+ WIDTH="29" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img103.png"
+ ALT="$&gt;0$"> print out an informational message about
+  convergence  every <IMG
+ WIDTH="46" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img143.png"
+ ALT="$itrace$"> iterations.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR></DD>
+<DT><STRONG>irst</STRONG></DT>
+<DD>An integer specifying the restart parameter.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Values: <IMG
+ WIDTH="59" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
+ SRC="img144.png"
+ ALT="$irst&gt;0$">. This is employed for the BiCGSTABL or RGMRES
+methods, otherwise it is ignored. 
+
+<P>
+</DD>
+<DT><STRONG>istop</STRONG></DT>
+<DD>An integer specifying the stopping criterion.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Values: 1: use the normwise backward error, 2: use the scaled 2-norm
+of the residual. Default: 2. 
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>The computed solution. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a rank one array.
+</DD>
+<DT><STRONG>iter</STRONG></DT>
+<DD>The number of iterations performed.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Returned  as: an integer variable.
+</DD>
+<DT><STRONG>err</STRONG></DT>
+<DD>The convergence estimate on exit.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Returned  as: a real number.
+</DD>
+<DT><STRONG>cond</STRONG></DT>
+<DD>An estimate of the condition number of matrix <IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">; only
+  available with the <IMG
+ WIDTH="29" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img145.png"
+ ALT="$CG$"> method.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Returned  as: a real number.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+
+<P>
+
+<P>
+<HR>
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+ 
+<H2><A NAME="SECTION000900000000000000000">
+Bibliography</A>
+</H2><DL COMPACT><DD>
+<P>
+<P></P><DT><A NAME="PARA04FOREST">1</A>
+<DD>
+G.&nbsp;Bella, S.&nbsp;Filippone, A.&nbsp;De Maio and M.&nbsp;Testa,
+<EM>A Simulation Model for Forest Fires</EM>,
+in J.&nbsp;Dongarra, K.&nbsp;Madsen, J.&nbsp;Wasniewski, editors,
+Proceedings of PARA&nbsp;04 Workshop on State of the Art
+in Scientific Computing, pp.&nbsp;546-553, Lecture Notes in Computer Science,
+Springer, 2005.
+<P></P><DT><A NAME="2007d">2</A>
+<DD> A. Buttari, D. di Serafino, P. D'Ambra, S. Filippone,<BR>
+2LEV-D2P4: a package of high-performance preconditioners,<BR>
+Applicable Algebra in Engineering, Communications and Computing, 
+Volume 18, Number 3, May, 2007, pp.  223-239
+<P></P><DT><A NAME="2007c">3</A>
+<DD>  P. D'Ambra, S. Filippone,  D. Di Serafino<BR>
+On the Development of PSBLAS-based Parallel Two-level Schwarz Preconditioners
+<BR>
+Applied Numerical Mathematics, Elsevier Science, 
+Volume 57, Issues 11-12, November-December 2007, Pages 1181-1196.
+
+<P>
+<P></P><DT><A NAME="BLAS2">4</A>
+<DD>
+ Dongarra, J. J.,  DuCroz, J.,  Hammarling, S. and Hanson, R.,
+An Extended Set of Fortran Basic Linear Algebra Subprograms,
+ACM Trans. Math. Softw. vol.&nbsp;14, 1-17, 1988.
+<P></P><DT><A NAME="BLAS3">5</A>
+<DD>
+  Dongarra, J., DuCroz, J., Hammarling, S. and Duff, I.,
+A  Set of level 3 Basic Linear Algebra Subprograms,
+ACM Trans. Math. Softw. vol.&nbsp;16, 1-17, 1990.
+<P></P><DT><A NAME="BLACS">6</A>
+<DD>
+J.&nbsp;J.&nbsp;Dongarra and R.&nbsp;C.&nbsp;Whaley,
+<EM>A User's Guide to the BLACS v.&nbsp;1.1</EM>,
+Lapack Working Note 94, Tech. Rep. UT-CS-95-281, University of
+Tennessee, March 1995 (updated May 1997).
+<P></P><DT><A NAME="sblas97">7</A>
+<DD>
+I.&nbsp;Duff, M.&nbsp;Marrone, G.&nbsp;Radicati and C.&nbsp;Vittoli,
+<EM>Level 3 Basic Linear Algebra Subprograms for Sparse Matrices: 
+a User Level Interface</EM>,
+ACM Transactions on Mathematical Software, 23(3), pp.&nbsp;379-401, 1997.
+<P></P><DT><A NAME="sblas02">8</A>
+<DD>
+I.&nbsp;Duff, M.&nbsp;Heroux and R.&nbsp;Pozo,
+<EM>An Overview of the Sparse Basic Linear
+Algebra Subprograms: the New Standard from the BLAS Technical Forum</EM>,
+ACM Transactions on Mathematical Software, 28(2), pp.&nbsp;239-267, 2002.
+<P></P><DT><A NAME="PSBLAS">9</A>
+<DD>
+S.&nbsp;Filippone and M.&nbsp;Colajanni, 
+<EM>PSBLAS: A Library for Parallel Linear Algebra
+Computation on Sparse Matrices</EM>,
+<BR>
+ACM Transactions on Mathematical Software, 26(4), pp.&nbsp;527-550, 2000.
+<P></P><DT><A NAME="KIVA3PSBLAS">10</A>
+<DD>
+S.&nbsp;Filippone, P.&nbsp;D'Ambra, M.&nbsp;Colajanni,
+<EM>Using a Parallel Library of Sparse Linear Algebra in a Fluid Dynamics 
+Applications Code on Linux Clusters</EM>,
+in G.&nbsp;Joubert, A.&nbsp;Murli, F.&nbsp;Peters, M.&nbsp;Vanneschi, editors,
+Parallel Computing - Advances &amp; Current Issues,
+pp.&nbsp;441-448, Imperial College Press, 2002. 
+<P></P><DT><A NAME="METIS">11</A>
+<DD>
+Karypis, G. and Kumar, V.,
+<EM>METIS: Unstructured Graph Partitioning and Sparse Matrix
+  Ordering System</EM>.
+Minneapolis, MN 55455: University of Minnesota, Department of
+  Computer Science, 1995. 
+Internet Address: <code>http://www.cs.umn.edu/~karypis</code>.
+<P></P><DT><A NAME="BLAS1">12</A>
+<DD>
+Lawson, C.,  Hanson, R., Kincaid, D. and Krogh, F.,
+   Basic Linear Algebra Subprograms for Fortran usage,
+ACM Trans. Math. Softw. vol.&nbsp;5, 38-329, 1979.
+
+<P>
+<P></P><DT><A NAME="machiels">13</A>
+<DD>
+Machiels, L. and Deville, M.
+<EM>Fortran 90: An entry to object-oriented programming for the solution
+  of partial differential equations.</EM>
+ACM Trans. Math. Softw. vol.&nbsp;23, 32-49.
+<P></P><DT><A NAME="metcalf">14</A>
+<DD>
+Metcalf, M., Reid, J. and Cohen, M.
+<EM>Fortran 95/2003 explained.</EM>
+Oxford University Press, 2004.
+<P></P><DT><A NAME="MPI1">15</A>
+<DD>
+M.&nbsp;Snir, S.&nbsp;Otto, S.&nbsp;Huss-Lederman, D.&nbsp;Walker and J.&nbsp;Dongarra,
+<EM>MPI: The Complete Reference. Volume 1 - The MPI Core</EM>, second edition,
+MIT Press, 1998.
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
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+<HEAD>
+<TITLE>psb_precdescr -- Prints a description of current preconditioner</TITLE>
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+  HREF="node114.html">psb_precaply   Preconditioner</A>
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+<H2><A NAME="SECTION000515000000000000000">
+psb_precdescr -- Prints a description of current
+  preconditioner</A>
+</H2>
+
+<P>
+ifstarssyntaxsyntaxcall psb_precdescrprec
+ifstarssyntaxsyntax*call psb_precdescrprec, iout
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>prec</STRONG></DT>
+<DD>the preconditioner.
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a preconditioner data structure precdata<TT>psb_prec_type</TT>.
+</DD>
+<DT><STRONG>iout</STRONG></DT>
+<DD>output unit.
+Scope: <B>local</B> 
+<BR>
+Type: <B>optiona</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer number. 
+</DD>
+</DL>
+
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+
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+  HREF="node117.html">psb_krylov   Krylov</A>
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+  HREF="node115.html">psb_precdescr   Prints</A>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H1><A NAME="SECTION000520000000000000000"></A>
+<A NAME="sec:methods"></A>
+<BR>
+Iterative Methods
+</H1>
+
+<P>
+In this chapter we provide routines for preconditioners and iterative
+methods. The interfaces for Krylov subspace methods are available in
+the module <code>psb_krylov_mod</code>.
+
+<P>
+<BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
+
+<UL>
+<LI><A NAME="tex2html1585"
+  HREF="node117.html">psb_krylov  -- Krylov Methods Driver
+      Routine</A>
+</UL>
+<!--End of Table of Child-Links-->
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+* with significant contributions from:
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+<TITLE>psb_krylov -- Krylov Methods Driver Routine</TITLE>
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+<B> Previous:</B> <A NAME="tex2html1587"
+  HREF="node116.html">Iterative Methods</A>
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+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000521000000000000000"></A><A NAME="krylov"></A>
+<BR>
+psb_krylov  -- Krylov Methods Driver
+      Routine
+</H2>
+
+<P>
+This subroutine is a driver that provides a general interface for all
+the Krylov-Subspace family methods implemented in PSBLAS version 2. 
+
+<P>
+The stopping criterion is the normwise backward error, in the infinity
+norm, i.e. the iteration is stopped when 
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+err = \frac{\|r_i\|}{(\|A\|\|x_i\|+\|b\|)} < eps
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="204" HEIGHT="44" BORDER="0"
+ SRC="img137.png"
+ ALT="\begin{displaymath}err = \frac{\Vert r_i\Vert}{(\Vert A\Vert\Vert x_i\Vert+\Vert b\Vert)} &lt; eps \end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+or the 2-norm residual reduction
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+err = \frac{\|r_i\|}{\|b\|_2} < eps
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="121" HEIGHT="44" BORDER="0"
+ SRC="img138.png"
+ ALT="\begin{displaymath}err = \frac{\Vert r_i\Vert}{\Vert b\Vert _2} &lt; eps \end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+according to the value passed through the  istop argument (see
+later). In the above formulae, <IMG
+ WIDTH="19" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img139.png"
+ ALT="$x_i$"> is the tentative solution and
+<IMG
+ WIDTH="90" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img140.png"
+ ALT="$r_i=b-Ax_i$"> the corresponding residual at the <IMG
+ WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img3.png"
+ ALT="$i$">-th iteration. 
+
+<P>
+ifstarssyntaxsyntaxcall psb_krylovmethod,a,prec,b,x,eps,desc_a,info,itmax,iter,err,itrace,irst,istop,cond
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>method</STRONG></DT>
+<DD>a string that defines the iterative method to be
+  used. Supported values are:
+  <DL>
+<DT><STRONG>CG:</STRONG></DT>
+<DD>the Conjugate Gradient method;
+  
+</DD>
+<DT><STRONG>CGS:</STRONG></DT>
+<DD>the Conjugate Gradient Stabilized method;
+
+<P>
+</DD>
+<DT><STRONG>BICG:</STRONG></DT>
+<DD>the Bi-Conjugate Gradient method;
+  
+</DD>
+<DT><STRONG>BICGSTAB:</STRONG></DT>
+<DD>the Bi-Conjugate Gradient Stabilized method;
+  
+</DD>
+<DT><STRONG>BICGSTABL:</STRONG></DT>
+<DD>the Bi-Conjugate Gradient Stabilized method with restarting;
+  
+</DD>
+<DT><STRONG>RGMRES:</STRONG></DT>
+<DD>the Generalized Minimal Residual method with restarting.
+  
+</DD>
+</DL>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the local portion of global sparse matrix
+<IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>prec</STRONG></DT>
+<DD>The data structure containing the preconditioner.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type precdata<TT>psb_prec_type</TT>.
+</DD>
+<DT><STRONG>b</STRONG></DT>
+<DD>The RHS vector. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a rank one array.
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>The initial guess. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a rank one array.
+</DD>
+<DT><STRONG>eps</STRONG></DT>
+<DD>The stopping tolerance. 
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a real number. 
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>itmax</STRONG></DT>
+<DD>The maximum number of iterations to perform.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Default: <IMG
+ WIDTH="100" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img141.png"
+ ALT="$itmax = 1000$">.
+<BR>
+Specified as: an integer variable <IMG
+ WIDTH="75" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
+ SRC="img142.png"
+ ALT="$itmax \ge 1$">.
+</DD>
+<DT><STRONG>itrace</STRONG></DT>
+<DD>If <IMG
+ WIDTH="29" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img103.png"
+ ALT="$&gt;0$"> print out an informational message about
+  convergence  every <IMG
+ WIDTH="46" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img143.png"
+ ALT="$itrace$"> iterations.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR></DD>
+<DT><STRONG>irst</STRONG></DT>
+<DD>An integer specifying the restart parameter.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Values: <IMG
+ WIDTH="59" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
+ SRC="img144.png"
+ ALT="$irst&gt;0$">. This is employed for the BiCGSTABL or RGMRES
+methods, otherwise it is ignored. 
+
+<P>
+</DD>
+<DT><STRONG>istop</STRONG></DT>
+<DD>An integer specifying the stopping criterion.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Values: 1: use the normwise backward error, 2: use the scaled 2-norm
+of the residual. Default: 2. 
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>The computed solution. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a rank one array.
+</DD>
+<DT><STRONG>iter</STRONG></DT>
+<DD>The number of iterations performed.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Returned  as: an integer variable.
+</DD>
+<DT><STRONG>err</STRONG></DT>
+<DD>The convergence estimate on exit.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Returned  as: a real number.
+</DD>
+<DT><STRONG>cond</STRONG></DT>
+<DD>An estimate of the condition number of matrix <IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">; only
+  available with the <IMG
+ WIDTH="29" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img145.png"
+ ALT="$CG$"> method.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Returned  as: a real number.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+
+<P>
+
+<P>
+<HR>
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
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+<HTML>
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+  HREF="node117.html">psb_krylov   Krylov</A>
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+<BR><BR>
+<!--End of Navigation Panel-->
+ 
+<H2><A NAME="SECTION000530000000000000000">
+Bibliography</A>
+</H2><DL COMPACT><DD>
+<P>
+<P></P><DT><A NAME="PARA04FOREST">1</A>
+<DD>
+G.&nbsp;Bella, S.&nbsp;Filippone, A.&nbsp;De Maio and M.&nbsp;Testa,
+<EM>A Simulation Model for Forest Fires</EM>,
+in J.&nbsp;Dongarra, K.&nbsp;Madsen, J.&nbsp;Wasniewski, editors,
+Proceedings of PARA&nbsp;04 Workshop on State of the Art
+in Scientific Computing, pp.&nbsp;546-553, Lecture Notes in Computer Science,
+Springer, 2005.
+<P></P><DT><A NAME="2007d">2</A>
+<DD> A. Buttari, D. di Serafino, P. D'Ambra, S. Filippone,<BR>
+2LEV-D2P4: a package of high-performance preconditioners,<BR>
+Applicable Algebra in Engineering, Communications and Computing, 
+Volume 18, Number 3, May, 2007, pp.  223-239
+<P></P><DT><A NAME="2007c">3</A>
+<DD>  P. D'Ambra, S. Filippone,  D. Di Serafino<BR>
+On the Development of PSBLAS-based Parallel Two-level Schwarz Preconditioners
+<BR>
+Applied Numerical Mathematics, Elsevier Science, 
+Volume 57, Issues 11-12, November-December 2007, Pages 1181-1196.
+
+<P>
+<P></P><DT><A NAME="BLAS2">4</A>
+<DD>
+ Dongarra, J. J.,  DuCroz, J.,  Hammarling, S. and Hanson, R.,
+An Extended Set of Fortran Basic Linear Algebra Subprograms,
+ACM Trans. Math. Softw. vol.&nbsp;14, 1-17, 1988.
+<P></P><DT><A NAME="BLAS3">5</A>
+<DD>
+  Dongarra, J., DuCroz, J., Hammarling, S. and Duff, I.,
+A  Set of level 3 Basic Linear Algebra Subprograms,
+ACM Trans. Math. Softw. vol.&nbsp;16, 1-17, 1990.
+<P></P><DT><A NAME="BLACS">6</A>
+<DD>
+J.&nbsp;J.&nbsp;Dongarra and R.&nbsp;C.&nbsp;Whaley,
+<EM>A User's Guide to the BLACS v.&nbsp;1.1</EM>,
+Lapack Working Note 94, Tech. Rep. UT-CS-95-281, University of
+Tennessee, March 1995 (updated May 1997).
+<P></P><DT><A NAME="sblas97">7</A>
+<DD>
+I.&nbsp;Duff, M.&nbsp;Marrone, G.&nbsp;Radicati and C.&nbsp;Vittoli,
+<EM>Level 3 Basic Linear Algebra Subprograms for Sparse Matrices: 
+a User Level Interface</EM>,
+ACM Transactions on Mathematical Software, 23(3), pp.&nbsp;379-401, 1997.
+<P></P><DT><A NAME="sblas02">8</A>
+<DD>
+I.&nbsp;Duff, M.&nbsp;Heroux and R.&nbsp;Pozo,
+<EM>An Overview of the Sparse Basic Linear
+Algebra Subprograms: the New Standard from the BLAS Technical Forum</EM>,
+ACM Transactions on Mathematical Software, 28(2), pp.&nbsp;239-267, 2002.
+<P></P><DT><A NAME="PSBLAS">9</A>
+<DD>
+S.&nbsp;Filippone and M.&nbsp;Colajanni, 
+<EM>PSBLAS: A Library for Parallel Linear Algebra
+Computation on Sparse Matrices</EM>,
+<BR>
+ACM Transactions on Mathematical Software, 26(4), pp.&nbsp;527-550, 2000.
+<P></P><DT><A NAME="KIVA3PSBLAS">10</A>
+<DD>
+S.&nbsp;Filippone, P.&nbsp;D'Ambra, M.&nbsp;Colajanni,
+<EM>Using a Parallel Library of Sparse Linear Algebra in a Fluid Dynamics 
+Applications Code on Linux Clusters</EM>,
+in G.&nbsp;Joubert, A.&nbsp;Murli, F.&nbsp;Peters, M.&nbsp;Vanneschi, editors,
+Parallel Computing - Advances &amp; Current Issues,
+pp.&nbsp;441-448, Imperial College Press, 2002. 
+<P></P><DT><A NAME="METIS">11</A>
+<DD>
+Karypis, G. and Kumar, V.,
+<EM>METIS: Unstructured Graph Partitioning and Sparse Matrix
+  Ordering System</EM>.
+Minneapolis, MN 55455: University of Minnesota, Department of
+  Computer Science, 1995. 
+Internet Address: <code>http://www.cs.umn.edu/~karypis</code>.
+<P></P><DT><A NAME="BLAS1">12</A>
+<DD>
+Lawson, C.,  Hanson, R., Kincaid, D. and Krogh, F.,
+   Basic Linear Algebra Subprograms for Fortran usage,
+ACM Trans. Math. Softw. vol.&nbsp;5, 38-329, 1979.
+
+<P>
+<P></P><DT><A NAME="machiels">13</A>
+<DD>
+Machiels, L. and Deville, M.
+<EM>Fortran 90: An entry to object-oriented programming for the solution
+  of partial differential equations.</EM>
+ACM Trans. Math. Softw. vol.&nbsp;23, 32-49.
+<P></P><DT><A NAME="metcalf">14</A>
+<DD>
+Metcalf, M., Reid, J. and Cohen, M.
+<EM>Fortran 95/2003 explained.</EM>
+Oxford University Press, 2004.
+<P></P><DT><A NAME="MPI1">15</A>
+<DD>
+M.&nbsp;Snir, S.&nbsp;Otto, S.&nbsp;Huss-Lederman, D.&nbsp;Walker and J.&nbsp;Dongarra,
+<EM>MPI: The Complete Reference. Volume 1 - The MPI Core</EM>, second edition,
+MIT Press, 1998.
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node119.html b/docs/html/node119.html
new file mode 100644
index 00000000..4e3b8779
--- /dev/null
+++ b/docs/html/node119.html
@@ -0,0 +1,74 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<!--End of Navigation Panel-->
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+<H1><A NAME="SECTION000540000000000000000">
+About this document ...</A>
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+This document was generated using the
+<A HREF="http://www.latex2html.org/"><STRONG>LaTeX</STRONG>2<tt>HTML</tt></A> translator Version 2002-2-1 (1.71)
+<P>
+Copyright &#169; 1993, 1994, 1995, 1996,
+<A HREF="http://cbl.leeds.ac.uk/nikos/personal.html">Nikos Drakos</A>, 
+Computer Based Learning Unit, University of Leeds.
+<BR>
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+Mathematics Department, Macquarie University, Sydney.
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diff --git a/docs/html/node12.html b/docs/html/node12.html
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
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+<BR>
+<!--End of Navigation Panel-->
+
+<H3><A NAME="SECTION00042100000000000000"></A>
+<A NAME="sec:sp_constants"></A>
+<BR>
+Named Constants
+</H3>
+<DL>
+<DT><STRONG>psb_dupl_ovwrt_</STRONG></DT>
+<DD>Duplicate coefficients should be overwritten
+  (i.e. ignore duplications)
+</DD>
+<DT><STRONG>psb_dupl_add_</STRONG></DT>
+<DD>Duplicate coefficients should be added;	         
+</DD>
+<DT><STRONG>psb_dupl_err_</STRONG></DT>
+<DD>Duplicate coefficients should trigger an error conditino
+</DD>
+<DT><STRONG>psb_upd_dflt_</STRONG></DT>
+<DD>Default update strategy for matrix coefficients;
+</DD>
+<DT><STRONG>psb_upd_srch_</STRONG></DT>
+<DD>Update strategy based on search into the data structure;
+</DD>
+<DT><STRONG>psb_upd_perm_</STRONG></DT>
+<DD>Update strategy based on additional
+  permutation data (see tools routine description).
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
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diff --git a/docs/html/node13.html b/docs/html/node13.html
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+original version by:  Nikos Drakos, CBLU, University of Leeds
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+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00043000000000000000"></A>
+<A NAME="sec:prec"></A>
+<BR>
+Preconditioner data structure
+</H2>
+Our base library  offers support for  simple well known preconditioners
+like Diagonal Scaling or Block Jacobi with incomplete
+factorization ILU(0). 
+
+<P>
+A preconditioner is held in the precdata<TT>    psb_prec_type</TT> data structure reported in 
+figure&nbsp;<A HREF="#fig:prectype">5</A>. The <code>psb_prec_type</code> 
+data type may contain a simple preconditioning matrix with the
+associated communication descriptor.The values contained in
+the <code>iprcparm</code> and <code>rprcparm</code> define tha type of
+preconditioner along with all the parameters related to it; thus,
+<code>iprcparm</code> and <code>rprcparm</code> define how the other records have
+to be interpreted. This data structure is the basis of more complex
+preconditioning strategies, which are the subject of further
+research. 
+
+<DIV ALIGN="CENTER"><A NAME="fig:prectype"></A><A NAME="622"></A>
+<TABLE>
+<CAPTION ALIGN="BOTTOM"><STRONG>Figure 5:</STRONG>
+The PSBLAS defined data type that contains a preconditioner.</CAPTION>
+<TR><TD><FONT SIZE="-1">  <BR>
+
+<BR>
+   
+  </FONT>
+<DIV ALIGN="CENTER"><FONT SIZE="-1"><!-- MATH
+ $\fbox{\TheSbox}$
+ -->
+<IMG
+ WIDTH="536" HEIGHT="218" ALIGN="MIDDLE" BORDER="0"
+ SRC="img17.png"
+ ALT="\fbox{\TheSbox}"></FONT></DIV><FONT SIZE="-1">
+  </FONT></TD></TR>
+</TABLE>
+</DIV>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+  HREF="node15.html">psb_cd_get_local_rows   Get</A>
+<B> Up:</B> <A NAME="tex2html336"
+  HREF="node8.html">Data Structures</A>
+<B> Previous:</B> <A NAME="tex2html330"
+  HREF="node13.html">Preconditioner data structure</A>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00044000000000000000"></A>
+<A NAME="sec:dataquery"></A>
+<BR>
+Data structure query routines
+</H2>
+<BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
+
+<UL>
+<LI><A NAME="tex2html341"
+  HREF="node15.html">psb_cd_get_local_rows -- Get number of local rows</A>
+<LI><A NAME="tex2html342"
+  HREF="node16.html">psb_cd_get_local_cols -- Get number of local cols</A>
+<LI><A NAME="tex2html343"
+  HREF="node17.html">psb_cd_get_global_rows -- Get number of global rows</A>
+<LI><A NAME="tex2html344"
+  HREF="node18.html">psb_cd_get_global_cols -- Get number of global cols</A>
+</UL>
+<!--End of Table of Child-Links-->
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node15.html b/docs/html/node15.html
new file mode 100644
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_cd_get_local_rows -- Get number of local rows</TITLE>
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+  HREF="node16.html">psb_cd_get_local_cols   Get</A>
+<B> Up:</B> <A NAME="tex2html352"
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+<B> Previous:</B> <A NAME="tex2html346"
+  HREF="node14.html">Data structure query routines</A>
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+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H3><A NAME="SECTION00044100000000000000">
+psb_cd_get_local_rows -- Get number of local rows</A>
+</H3>
+
+<P>
+<PRE>
+nr = psb_cd_get_local_rows(desc)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>The number of local rows, i.e. the number of
+  rows owned by the current process; as explained in&nbsp;<A HREF="node2.html#sec:intro">1</A>,
+  it is equal to <!-- MATH
+ $|{\cal I}_i| + |{\cal B}_i|$
+ -->
+<IMG
+ WIDTH="71" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img9.png"
+ ALT="$\vert{\cal I}_i\vert + \vert{\cal B}_i\vert$">. The returned value is
+  specific to the calling process. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node16.html b/docs/html/node16.html
new file mode 100644
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+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_cd_get_local_cols -- Get number of local cols</TITLE>
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+  HREF="node17.html">psb_cd_get_global_rows   Get</A>
+<B> Up:</B> <A NAME="tex2html364"
+  HREF="node14.html">Data structure query routines</A>
+<B> Previous:</B> <A NAME="tex2html358"
+  HREF="node15.html">psb_cd_get_local_rows   Get</A>
+ &nbsp; <B>  <A NAME="tex2html366"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H3><A NAME="SECTION00044200000000000000">
+psb_cd_get_local_cols -- Get number of local cols</A>
+</H3>
+
+<P>
+<PRE>
+nc = psb_cd_get_local_cols(desc)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG>desc</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>The number of local cols, i.e. the number of
+  indices used by the current process, including both local and halo
+  indices; as explained in&nbsp;<A HREF="node2.html#sec:intro">1</A>, 
+  it is equal to  <!-- MATH
+ $|{\cal I}_i| + |{\cal B}_i| +|{\cal H}_i|$
+ -->
+<IMG
+ WIDTH="117" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img10.png"
+ ALT="$\vert{\cal I}_i\vert + \vert{\cal B}_i\vert +\vert{\cal H}_i\vert$">. The
+  returned value is specific to the calling process. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node17.html b/docs/html/node17.html
new file mode 100644
index 00000000..79c5050a
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+++ b/docs/html/node17.html
@@ -0,0 +1,102 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_cd_get_global_rows -- Get number of global rows</TITLE>
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+<B> Next:</B> <A NAME="tex2html380"
+  HREF="node18.html">psb_cd_get_global_cols   Get</A>
+<B> Up:</B> <A NAME="tex2html376"
+  HREF="node14.html">Data structure query routines</A>
+<B> Previous:</B> <A NAME="tex2html370"
+  HREF="node16.html">psb_cd_get_local_cols   Get</A>
+ &nbsp; <B>  <A NAME="tex2html378"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H3><A NAME="SECTION00044300000000000000">
+psb_cd_get_global_rows -- Get number of global rows</A>
+</H3>
+
+<P>
+<PRE>
+nr = psb_cd_get_global_rows(desc)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG>desc</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>The number of global rows in the mesh
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node18.html b/docs/html/node18.html
new file mode 100644
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+++ b/docs/html/node18.html
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_cd_get_global_cols -- Get number of global cols</TITLE>
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+<BR>
+<B> Next:</B> <A NAME="tex2html390"
+  HREF="node19.html">psb_cd_get_context Get communication context</A>
+<B> Up:</B> <A NAME="tex2html386"
+  HREF="node14.html">Data structure query routines</A>
+<B> Previous:</B> <A NAME="tex2html382"
+  HREF="node17.html">psb_cd_get_global_rows   Get</A>
+ &nbsp; <B>  <A NAME="tex2html388"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H3><A NAME="SECTION00044400000000000000">
+psb_cd_get_global_cols -- Get number of global cols</A>
+</H3>
+
+<P>
+<PRE>
+nr = psb_cd_get_global_cols(desc)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>The number of global cols in the mesh
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node19.html b/docs/html/node19.html
new file mode 100644
index 00000000..0627d65d
--- /dev/null
+++ b/docs/html/node19.html
@@ -0,0 +1,123 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_cd_get_context--Get communication context </TITLE>
+<META NAME="description" CONTENT="psb_cd_get_context--Get communication context ">
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+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html400"
+  HREF="node20.html">psb_cd_get_large_threshold   Get</A>
+<B> Up:</B> <A NAME="tex2html396"
+  HREF="node8.html">Data Structures</A>
+<B> Previous:</B> <A NAME="tex2html392"
+  HREF="node18.html">psb_cd_get_global_cols   Get</A>
+ &nbsp; <B>  <A NAME="tex2html398"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00045000000000000000">
+<DIV ALIGN="LEFT">
+psb_cd_get_context--Get communication context 
+</DIV></A>
+</H2>
+<PRE>
+ictxt = psb_cd_get_context(desc)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>The communication context.
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
+
+<UL>
+<LI><A NAME="tex2html401"
+  HREF="node20.html">psb_cd_get_large_threshold -- Get threshold for
+  index mapping switch</A>
+<LI><A NAME="tex2html402"
+  HREF="node21.html">psb_cd_set_large_threshold -- Set threshold for
+  index mapping switch</A>
+<LI><A NAME="tex2html403"
+  HREF="node22.html">psb_sp_get_nrows -- Get number of  rows in a sparse
+  matrix</A>
+<LI><A NAME="tex2html404"
+  HREF="node23.html">psb_sp_get_ncols -- Get number of  columns in a
+  sparse matrix</A>
+<LI><A NAME="tex2html405"
+  HREF="node24.html">psb_sp_get_nnzeros -- Get number of nonzero elements
+  in a sparse matrix</A>
+</UL>
+<!--End of Table of Child-Links-->
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node2.html b/docs/html/node2.html
new file mode 100644
index 00000000..d0574a21
--- /dev/null
+++ b/docs/html/node2.html
@@ -0,0 +1,165 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>Introduction</TITLE>
+<META NAME="description" CONTENT="Introduction">
+<META NAME="keywords" CONTENT="userhtml">
+<META NAME="resource-type" CONTENT="document">
+<META NAME="distribution" CONTENT="global">
+
+<META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1">
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+
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+
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+<LINK REL="previous" HREF="node1.html">
+<LINK REL="up" HREF="userhtml.html">
+<LINK REL="next" HREF="node3.html">
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+
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+ SRC="file:/usr/share/latex2html/icons/prev.png"></A> 
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+<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents"
+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html180"
+  HREF="node3.html">General overview</A>
+<B> Up:</B> <A NAME="tex2html176"
+  HREF="userhtml.html">userhtml</A>
+<B> Previous:</B> <A NAME="tex2html170"
+  HREF="node1.html">Contents</A>
+ &nbsp; <B>  <A NAME="tex2html178"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H1><A NAME="SECTION00020000000000000000"></A><A NAME="sec:intro"></A>
+<BR>
+Introduction
+</H1>
+
+<P>
+The PSBLAS library, developed with the aim to facilitate the
+parallelization of computationally intensive scientific applications,
+is designed to address parallel implementation of iterative solvers
+for sparse linear systems through the distributed memory paradigm.  It
+includes routines for multiplying sparse matrices by dense matrices,
+solving block diagonal systems with triangular diagonal entries,
+preprocessing sparse matrices, and contains additional routines for
+dense matrix operations.  The current implementation of PSBLAS
+addresses a distributed memory execution model operating with message
+passing. 
+
+<P>
+The PSBLAS library is internally implemented in
+ the Fortran&nbsp;95&nbsp;[<A
+ HREF="node105.html#metcalf">14</A>] programming language, with reuse and/or
+ adaptation of some existing Fortran&nbsp;77 software, and a handful of C
+ routines. 
+A similar approach has been advocated by a number of authors,
+e.g.&nbsp;[<A
+ HREF="node105.html#machiels">13</A>].  Moreover, the Fortran&nbsp;95 facilities for dynamic
+memory management and interface overloading greatly enhance the
+usability of the PSBLAS 
+subroutines. In this way, the library can take care of runtime memory
+requirements that are quite difficult or even impossible to predict at
+implementation or compilation time.  
+In the current release we rely on the availability of the so-called
+allocatable extensions, specified in TR&nbsp;15581. Strictly speaking they
+are outside the Fortran&nbsp;95 standard; however they have been included
+in  the Fortran&nbsp;2003 language standard, and are available in
+practically all Fortran&nbsp;95 compilers on the market, including the GNU
+Fortran compiler from the Free Software Foundation (as of version 4.2). 
+The presentation of the
+PSBLAS library follows the general structure of the proposal for
+serial Sparse BLAS&nbsp;[<A
+ HREF="node105.html#sblas97">7</A>,<A
+ HREF="node105.html#sblas02">8</A>], which in its turn is based on the
+proposal for BLAS on dense matrices&nbsp;[<A
+ HREF="node105.html#BLAS1">12</A>,<A
+ HREF="node105.html#BLAS2">4</A>,<A
+ HREF="node105.html#BLAS3">5</A>].
+
+<P>
+The applicability of sparse iterative solvers to many different areas
+causes some terminology problems because the same concept may be
+denoted through different names depending on the application area. The
+PSBLAS features presented in this document will be discussed referring
+to a   finite difference discretization of a Partial Differential
+Equation (PDE). However, the scope of the library is wider than
+that: for example, it can be applied to finite element discretizations
+of PDEs, and even to different classes of problems such as nonlinear
+optimization, for example in optimal control problems.
+
+<P>
+The design of a solver for sparse linear systems is driven by many
+conflicting objectives, such as limiting occupation of storage
+resources, exploiting regularities in the input data, exploiting
+hardware characteristics of the parallel platform.  To achieve an
+optimal communication to computation ratio on distributed memory
+machines it is essential to keep the <EM>data locality</EM> as high as
+possible; this can be done through an appropriate data allocation
+strategy.  The choice of the preconditioner is another very important
+factor that affects efficiency of the implemented application. Optimal
+data distribution requirements for a given preconditioner may conflict
+with distribution requirements of the rest of the solver. Finding the
+optimal trade-off may be very difficult because it is application
+dependent.  Possible solutions to these problems and other important
+inputs to the development of the PSBLAS software package have come from
+an established experience in applying the PSBLAS solvers to
+computational fluid dynamics applications.
+
+<P>
+<HR>
+<!--Navigation Panel-->
+<A NAME="tex2html179"
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+<BR>
+<B> Next:</B> <A NAME="tex2html180"
+  HREF="node3.html">General overview</A>
+<B> Up:</B> <A NAME="tex2html176"
+  HREF="userhtml.html">userhtml</A>
+<B> Previous:</B> <A NAME="tex2html170"
+  HREF="node1.html">Contents</A>
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+<!--End of Navigation Panel-->
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+</BODY>
+</HTML>
diff --git a/docs/html/node20.html b/docs/html/node20.html
new file mode 100644
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+++ b/docs/html/node20.html
@@ -0,0 +1,86 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_cd_get_large_threshold -- Get threshold for index mapping switch</TITLE>
+<META NAME="description" CONTENT="psb_cd_get_large_threshold -- Get threshold for index mapping switch">
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+<BR>
+<B> Next:</B> <A NAME="tex2html417"
+  HREF="node21.html">psb_cd_set_large_threshold   Set</A>
+<B> Up:</B> <A NAME="tex2html413"
+  HREF="node19.html">psb_cd_get_context Get communication context</A>
+<B> Previous:</B> <A NAME="tex2html407"
+  HREF="node19.html">psb_cd_get_context Get communication context</A>
+ &nbsp; <B>  <A NAME="tex2html415"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H3><A NAME="SECTION00045100000000000000">
+psb_cd_get_large_threshold -- Get threshold for
+  index mapping switch</A>
+</H3>
+
+<PRE>
+ith = psb_cd_get_large_threshold()
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>The current value for the size threshold. 
+
+<P>
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node21.html b/docs/html/node21.html
new file mode 100644
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@@ -0,0 +1,95 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_cd_set_large_threshold -- Set threshold for index mapping switch</TITLE>
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+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html429"
+  HREF="node22.html">psb_sp_get_nrows   Get</A>
+<B> Up:</B> <A NAME="tex2html425"
+  HREF="node19.html">psb_cd_get_context Get communication context</A>
+<B> Previous:</B> <A NAME="tex2html419"
+  HREF="node20.html">psb_cd_get_large_threshold   Get</A>
+ &nbsp; <B>  <A NAME="tex2html427"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H3><A NAME="SECTION00045200000000000000">
+psb_cd_set_large_threshold -- Set threshold for
+  index mapping switch</A>
+</H3>
+
+<PRE>
+call psb_cd_set_large_threshold(ith)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>ith</STRONG></DT>
+<DD>the new threshold for communication descriptors.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value greater than zero.
+</DD>
+</DL>
+Note: the threshold value is only queried by the library at the time a
+call to <code>psb_cdall</code> is executed, therefore changing the threshold
+has no effect on communication descriptors that have already been initialized.
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node22.html b/docs/html/node22.html
new file mode 100644
index 00000000..cad71b10
--- /dev/null
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@@ -0,0 +1,103 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_sp_get_nrows -- Get number of rows in a sparse matrix</TITLE>
+<META NAME="description" CONTENT="psb_sp_get_nrows -- Get number of rows in a sparse matrix">
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+<B> Next:</B> <A NAME="tex2html441"
+  HREF="node23.html">psb_sp_get_ncols   Get</A>
+<B> Up:</B> <A NAME="tex2html437"
+  HREF="node19.html">psb_cd_get_context Get communication context</A>
+<B> Previous:</B> <A NAME="tex2html431"
+  HREF="node21.html">psb_cd_set_large_threshold   Set</A>
+ &nbsp; <B>  <A NAME="tex2html439"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H3><A NAME="SECTION00045300000000000000">
+psb_sp_get_nrows -- Get number of  rows in a sparse
+  matrix</A>
+</H3>
+
+<P>
+<PRE>
+nr = psb_sp_get_nrows(a)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the sparse matrix
+<BR>
+Scope: <B>local</B>
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>The number of  rows  of sparse matrix <code>a</code>.
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node23.html b/docs/html/node23.html
new file mode 100644
index 00000000..2e0ba3ef
--- /dev/null
+++ b/docs/html/node23.html
@@ -0,0 +1,103 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_sp_get_ncols -- Get number of columns in a sparse matrix</TITLE>
+<META NAME="description" CONTENT="psb_sp_get_ncols -- Get number of columns in a sparse matrix">
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+<B> Next:</B> <A NAME="tex2html453"
+  HREF="node24.html">psb_sp_get_nnzeros   Get</A>
+<B> Up:</B> <A NAME="tex2html449"
+  HREF="node19.html">psb_cd_get_context Get communication context</A>
+<B> Previous:</B> <A NAME="tex2html443"
+  HREF="node22.html">psb_sp_get_nrows   Get</A>
+ &nbsp; <B>  <A NAME="tex2html451"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H3><A NAME="SECTION00045400000000000000">
+psb_sp_get_ncols -- Get number of  columns in a
+  sparse matrix</A>
+</H3>
+
+<P>
+<PRE>
+nr = psb_sp_get_ncols(a)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the sparse matrix
+<BR>
+Scope: <B>local</B>
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>The number of  columns  of sparse matrix <code>a</code>.
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node24.html b/docs/html/node24.html
new file mode 100644
index 00000000..efb8e79f
--- /dev/null
+++ b/docs/html/node24.html
@@ -0,0 +1,112 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_sp_get_nnzeros -- Get number of nonzero elements in a sparse matrix</TITLE>
+<META NAME="description" CONTENT="psb_sp_get_nnzeros -- Get number of nonzero elements in a sparse matrix">
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+<B> Next:</B> <A NAME="tex2html463"
+  HREF="node25.html">Computational routines</A>
+<B> Up:</B> <A NAME="tex2html459"
+  HREF="node19.html">psb_cd_get_context Get communication context</A>
+<B> Previous:</B> <A NAME="tex2html455"
+  HREF="node23.html">psb_sp_get_ncols   Get</A>
+ &nbsp; <B>  <A NAME="tex2html461"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H3><A NAME="SECTION00045500000000000000">
+psb_sp_get_nnzeros -- Get number of nonzero elements
+  in a sparse matrix</A>
+</H3>
+
+<P>
+<PRE>
+nr = psb_sp_get_nnzeros(a)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the sparse matrix
+<BR>
+Scope: <B>local</B>
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>The number of nonzero elements stored in sparse matrix <code>a</code>.
+</DD>
+</DL>
+
+<P>
+<B>Notes</B>
+
+<OL>
+<LI>The function value is specific to the storage format of matrix
+  <code>a</code>; some storage formats employ padding, thus the returned
+  value for the same matrix may be different for different storage choices.
+</LI>
+</OL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node25.html b/docs/html/node25.html
new file mode 100644
index 00000000..42ff464e
--- /dev/null
+++ b/docs/html/node25.html
@@ -0,0 +1,95 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>Computational routines</TITLE>
+<META NAME="description" CONTENT="Computational routines">
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+<BR>
+<B> Next:</B> <A NAME="tex2html475"
+  HREF="node26.html">psb_geaxpby   General</A>
+<B> Up:</B> <A NAME="tex2html471"
+  HREF="userhtml.html">userhtml</A>
+<B> Previous:</B> <A NAME="tex2html465"
+  HREF="node24.html">psb_sp_get_nnzeros   Get</A>
+ &nbsp; <B>  <A NAME="tex2html473"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H1><A NAME="SECTION00050000000000000000">
+Computational routines</A>
+</H1>
+
+<P>
+<BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
+
+<UL>
+<LI><A NAME="tex2html476"
+  HREF="node26.html">psb_geaxpby -- General Dense Matrix Sum</A>
+<LI><A NAME="tex2html477"
+  HREF="node27.html">psb_gedot -- Dot Product</A>
+<LI><A NAME="tex2html478"
+  HREF="node28.html">psb_gedots -- Generalized Dot Product</A>
+<LI><A NAME="tex2html479"
+  HREF="node29.html">psb_geamax -- Infinity-Norm of Vector</A>
+<LI><A NAME="tex2html480"
+  HREF="node30.html">psb_geamaxs -- Generalized Infinity Norm</A>
+<LI><A NAME="tex2html481"
+  HREF="node31.html">psb_geasum -- 1-Norm of Vector</A>
+<LI><A NAME="tex2html482"
+  HREF="node32.html">psb_geasums -- Generalized 1-Norm of Vector</A>
+<LI><A NAME="tex2html483"
+  HREF="node33.html">psb_genrm2s -- Generalized 1-Norm of Vector</A>
+<LI><A NAME="tex2html484"
+  HREF="node34.html">psb_spnrmi -- Infinity Norm of Sparse Matrix</A>
+<LI><A NAME="tex2html485"
+  HREF="node35.html">psb_spmm -- Sparse Matrix by Dense Matrix Product</A>
+<LI><A NAME="tex2html486"
+  HREF="node36.html">psb_spsm -- Triangular System Solve</A>
+</UL>
+<!--End of Table of Child-Links-->
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node26.html b/docs/html/node26.html
new file mode 100644
index 00000000..a82b033c
--- /dev/null
+++ b/docs/html/node26.html
@@ -0,0 +1,289 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_geaxpby -- General Dense Matrix Sum</TITLE>
+<META NAME="description" CONTENT="psb_geaxpby -- General Dense Matrix Sum">
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+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html498"
+  HREF="node27.html">psb_gedot   Dot</A>
+<B> Up:</B> <A NAME="tex2html494"
+  HREF="node25.html">Computational routines</A>
+<B> Previous:</B> <A NAME="tex2html488"
+  HREF="node25.html">Computational routines</A>
+ &nbsp; <B>  <A NAME="tex2html496"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00051000000000000000">
+psb_geaxpby -- General Dense Matrix Sum</A>
+</H2>
+
+<P>
+This subroutine is an interface to the computational kernel for
+dense matrix sum:
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+y \leftarrow  \alpha\> x+ \beta y
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="93" HEIGHT="27" BORDER="0"
+ SRC="img23.png"
+ ALT="\begin{displaymath}y \leftarrow \alpha\&gt; x+ \beta y \end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P> 
+
+<P>
+<PRE>
+call psb_geaxpby(alpha, x, beta, y, desc_a, info)
+</PRE>
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER"><A NAME="1414"></A>
+<TABLE>
+<CAPTION><STRONG>Table 1:</STRONG>
+Data types</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="LEFT"><IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">, <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">, <IMG
+ WIDTH="14" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img26.png"
+ ALT="$\alpha$">, <IMG
+ WIDTH="14" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img27.png"
+ ALT="$\beta$"></TD>
+<TD ALIGN="LEFT"><B>Subroutine</B></TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">psb_geaxpby</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">psb_geaxpby</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Complex</TD>
+<TD ALIGN="LEFT">psb_geaxpby</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Complex</TD>
+<TD ALIGN="LEFT">psb_geaxpby</TD>
+</TR>
+</TABLE>
+</DIV>
+</TD></TR>
+</TABLE>
+</DIV><P></P>
+<BR>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>alpha</STRONG></DT>
+<DD>the scalar <IMG
+ WIDTH="14" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img26.png"
+ ALT="$\alpha$">.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a number of the data type indicated in Table&nbsp;<A HREF="#tab:f90axpby">1</A>.
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a rank one or two array 
+containing numbers of type 
+specified in Table&nbsp;<A HREF="#tab:f90axpby">1</A>.  The rank of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> must be the same of <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">. 
+</DD>
+<DT><STRONG>beta</STRONG></DT>
+<DD>the scalar <IMG
+ WIDTH="14" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img27.png"
+ ALT="$\beta$">.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a number of the data type indicated in Table&nbsp;<A HREF="#tab:f90axpby">1</A>.
+</DD>
+<DT><STRONG>y</STRONG></DT>
+<DD>the local portion of the global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as:  a rank one or two array containing numbers of the type 
+indicated in Table&nbsp;<A HREF="#tab:f90axpby">1</A>.  The rank of <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"> must be the same of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">. 
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+
+<P>
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>y</STRONG></DT>
+<DD>the local portion of result submatrix <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a rank one or two array containing numbers of the type
+indicated in Table&nbsp;<A HREF="#tab:f90axpby">1</A>.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
+<A NAME="tex2html497"
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diff --git a/docs/html/node27.html b/docs/html/node27.html
new file mode 100644
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--- /dev/null
+++ b/docs/html/node27.html
@@ -0,0 +1,288 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_gedot -- Dot Product</TITLE>
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+  HREF="node28.html">psb_gedots   Generalized</A>
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+  HREF="node26.html">psb_geaxpby   General</A>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00052000000000000000">
+psb_gedot -- Dot Product</A>
+</H2>
+
+<P>
+This function computes dot product between two vectors <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> and
+<IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">.
+<BR>
+If <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> and <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"> are real vectors
+it computes dot-product as:
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+dot \leftarrow x^T y
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="74" HEIGHT="27" BORDER="0"
+ SRC="img28.png"
+ ALT="\begin{displaymath}dot \leftarrow x^T y\end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+Else if <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> and <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"> are complex vectors then it computes dot-product as:
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+dot \leftarrow x^H y
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="76" HEIGHT="27" BORDER="0"
+ SRC="img29.png"
+ ALT="\begin{displaymath}dot \leftarrow x^H y\end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+
+<P>
+<PRE>
+psb_gedot(x, y, desc_a, info)
+</PRE>
+<BR><P></P>
+<DIV ALIGN="CENTER"><A NAME="1415"></A>
+<TABLE>
+<CAPTION><STRONG>Table 2:</STRONG>
+Data types</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="LEFT"><IMG
+ WIDTH="25" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img30.png"
+ ALT="$dot$">, <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">, <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"></TD>
+<TD ALIGN="LEFT"><B>Function</B></TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">psb_gedot</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">psb_gedot</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Complex</TD>
+<TD ALIGN="LEFT">psb_gedot</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Complex</TD>
+<TD ALIGN="LEFT">psb_gedot</TD>
+</TR>
+</TABLE>
+</DIV>
+</TD></TR>
+</TABLE>
+</DIV><P></P>
+<BR>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an array of rank one or two
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90dot">2</A>. The rank of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> must be the same of <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">. 
+</DD>
+<DT><STRONG>y</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an array of rank one or two
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90dot">2</A>. The rank of <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"> must be the same of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">. 
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+
+<P>
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>is the dot product of subvectors <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> and <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Specified as: a number of the data type indicated in Table&nbsp;<A HREF="#tab:f90dot">2</A>.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
+<A NAME="tex2html509"
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+  HREF="node28.html">psb_gedots   Generalized</A>
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+  HREF="node25.html">Computational routines</A>
+<B> Previous:</B> <A NAME="tex2html500"
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diff --git a/docs/html/node28.html b/docs/html/node28.html
new file mode 100644
index 00000000..88723970
--- /dev/null
+++ b/docs/html/node28.html
@@ -0,0 +1,274 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_gedots -- Generalized Dot Product</TITLE>
+<META NAME="description" CONTENT="psb_gedots -- Generalized Dot Product">
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00053000000000000000">
+psb_gedots -- Generalized Dot Product</A>
+</H2>
+
+<P>
+This subroutine computes a series of  dot products among the columns of
+two dense matrices  <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> and <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">: 
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+res(i) \leftarrow x(:,i)^T y(:,i)
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="150" HEIGHT="28" BORDER="0"
+ SRC="img31.png"
+ ALT="\begin{displaymath}res(i) \leftarrow x(:,i)^T y(:,i)\end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+If the matrices are complex, then the
+usual convention applies, i.e. the conjugate transpose of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is
+used. If <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> and <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"> are of rank one, then <IMG
+ WIDTH="26" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img32.png"
+ ALT="$res$"> is a scalar, else it
+is a rank one array. 
+
+<P>
+<PRE>
+call psb_gedots(res, x, y, desc_a, info)
+</PRE>
+<BR><P></P>
+<DIV ALIGN="CENTER"><A NAME="1416"></A>
+<TABLE>
+<CAPTION><STRONG>Table 3:</STRONG>
+Data types</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="LEFT"><IMG
+ WIDTH="26" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img32.png"
+ ALT="$res$">, <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">, <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"></TD>
+<TD ALIGN="LEFT"><B>Subroutine</B></TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">psb_gedots</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">psb_gedots</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Complex</TD>
+<TD ALIGN="LEFT">psb_gedots</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Complex</TD>
+<TD ALIGN="LEFT">psb_gedots</TD>
+</TR>
+</TABLE>
+</DIV>
+</TD></TR>
+</TABLE>
+</DIV><P></P>
+<BR>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an array of rank one or two
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90mdot">3</A>. The rank of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> must be the same of <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">. 
+</DD>
+<DT><STRONG>y</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an array of rank one or two
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90mdot">3</A>. The rank of <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"> must be the same of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">. 
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>res</STRONG></DT>
+<DD>is the dot product of subvectors <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> and <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: a number or a rank-one array  of the data type indicated
+in Table&nbsp;<A HREF="#tab:f90dot">2</A>. 
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
+<A NAME="tex2html521"
+  HREF="node29.html">
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+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00054000000000000000">
+psb_geamax -- Infinity-Norm of Vector</A>
+</H2>
+
+<P>
+This function computes 
+ the infinity-norm of a vector <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+If <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is a real  vector
+it computes infinity norm as:
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+amax \leftarrow \max_i |x_i|
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="118" HEIGHT="36" BORDER="0"
+ SRC="img33.png"
+ ALT="\begin{displaymath}amax \leftarrow \max_i \vert x_i\vert\end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+else if <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is a complex vector then it computes infinity-norm  as:
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+amax \leftarrow \max_i {(|re(x_i)| + |im(x_i)|)}
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="233" HEIGHT="36" BORDER="0"
+ SRC="img34.png"
+ ALT="\begin{displaymath}amax \leftarrow \max_i {(\vert re(x_i)\vert + \vert im(x_i)\vert)}\end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+
+<P>
+<PRE>
+psb_geamax(x, desc_a, info)
+</PRE>
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER"><A NAME="1417"></A>
+<TABLE>
+<CAPTION><STRONG>Table 4:</STRONG>
+Data types</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="LEFT"><IMG
+ WIDTH="44" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img35.png"
+ ALT="$amax$"></TD>
+<TD ALIGN="LEFT"><IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"></TD>
+<TD ALIGN="LEFT"><B>Function</B></TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">psb_geamax</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">psb_geamax</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">Short Precision Complex</TD>
+<TD ALIGN="LEFT">psb_geamax</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">Long Precision Complex</TD>
+<TD ALIGN="LEFT">psb_geamax</TD>
+</TR>
+</TABLE>
+</DIV>
+</TD></TR>
+</TABLE>
+</DIV><P></P>
+<BR>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">. 
+
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as:  a rank one or two array  
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90amax">4</A>.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+
+<P>
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>is the infinity norm of subvector <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Specified as: a long precision real number.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
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+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>General overview</TITLE>
+<META NAME="description" CONTENT="General overview">
+<META NAME="keywords" CONTENT="userhtml">
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+<META NAME="distribution" CONTENT="global">
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+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H1><A NAME="SECTION00030000000000000000"></A>
+<A NAME="sec:overview"></A>
+<BR>
+General overview
+</H1> 
+The PSBLAS library is designed to handle the implementation of
+iterative solvers for sparse linear systems on distributed memory
+parallel computers.  The system coefficient matrix <IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$"> must be square;
+it may be real or complex, nonsymmetric, and its sparsity pattern
+needs not to be symmetric.  The serial computation parts are based on
+the serial sparse BLAS, so that any extension made to the data
+structures of the serial kernels is available to the parallel
+version. The overall design and parallelization strategy have been
+influenced by the structure of the ScaLAPACK parallel
+library.  The layered structure of the PSBLAS library
+is shown in figure&nbsp;<A HREF="#fig:psblas">1</A>; lower layers of the library
+indicate an encapsulation relationship with upper layers. The ongoing
+discussion focuses on the Fortran&nbsp;95 layer immediately below the
+application layer.
+The serial parts of the computation on each process are executed through
+calls to the serial sparse BLAS subroutines. In a similar way, the
+inter-process message exchanges are implemented through the Basic
+Linear Algebra Communication Subroutines (BLACS) library&nbsp;[<A
+ HREF="node105.html#BLACS">6</A>]
+that guarantees a portable and efficient communication layer. The
+Message Passing Interface code is encapsulated within the BLACS
+layer. However, in some cases, MPI routines are directly used either
+to improve efficiency or to implement communication patterns for which
+the BLACS package doesn't provide any method. 
+
+<P>
+In any case we provide wrappers around the BLACS routines so that the
+user does not need to delve into their details (see Sec.&nbsp;<A HREF="node70.html#sec:parenv">7</A>).
+
+<P>
+
+<DIV ALIGN="CENTER"><A NAME="fig:psblas"></A><A NAME="222"></A>
+<TABLE>
+<CAPTION ALIGN="BOTTOM"><STRONG>Figure 1:</STRONG>
+PSBLAS library components hierarchy.</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ $\rotatebox{-90}{\includegraphics[scale=0.65]{figures/psblas}}$
+ -->
+<IMG
+ WIDTH="37" HEIGHT="2" ALIGN="BOTTOM" BORDER="0"
+ SRC="img2.png"
+ ALT="\rotatebox{-90}{\includegraphics[scale=0.65]{figures/psblas}}">
+</DIV></TD></TR>
+</TABLE>
+</DIV>
+
+<P>
+The type of linear system matrices that we address  typically arise in the
+numerical solution of PDEs;  in such a context,
+it is necessary to pay special attention to the
+structure of the problem from which the application originates. 
+The nonzero pattern of a matrix arising from the
+discretization of a PDE is influenced by various factors, such as the
+shape of the  domain, the discretization strategy, and
+the equation/unknown ordering. The matrix itself can be interpreted as
+the  adjacency matrix of the graph associated with the discretization
+mesh. 
+
+<P>
+The distribution of the coefficient matrix for the linear system is
+based on the ``owner computes'' rule: 
+the variable associated to each mesh point is assigned to a process
+that will  own the corresponding row in the coefficient matrix and
+will  carry out all related computations. This allocation strategy 
+is equivalent to a partition of the discretization mesh into <EM>sub-domains</EM>. 
+Our library  supports any distribution that keeps together 
+the coefficients of each matrix row; there are no other constraints on
+the variable assignment. 
+This choice is consistent with  data distributions commonly used in
+ScaLAPACK  such as  <code>CYCLIC(N)</code> and <code>BLOCK</code>, 
+as well as completely arbitrary assignments of
+equation indices to processes. In particular it is consistent with the
+usage of graph partitioning tools commonly available in the
+literature, e.g. METIS&nbsp;[<A
+ HREF="node105.html#METIS">11</A>].
+Dense vectors  conform  to sparse
+matrices, that is, the entries of a vector follow the same distribution
+of the matrix rows.  
+
+<P>
+We assume that the sparse matrix is built in parallel, where each
+process generates its own portion. We never require that the entire
+matrix be available on a single node. However, it is possible
+to hold the entire matrix in one process and distribute it
+explicitly<A NAME="tex2html2"
+  HREF="footnode.html#foot164"><SUP>1</SUP></A>, even though  the resulting 
+bottleneck would make this option unattractive in most  cases. 
+
+<P>
+<BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
+
+<UL>
+<LI><A NAME="tex2html193"
+  HREF="node4.html">Basic Nomenclature</A>
+<LI><A NAME="tex2html194"
+  HREF="node5.html">Library contents</A>
+<LI><A NAME="tex2html195"
+  HREF="node6.html">Application structure</A>
+<LI><A NAME="tex2html196"
+  HREF="node7.html">Programming model</A>
+</UL>
+<!--End of Table of Child-Links-->
+<HR>
+<!--Navigation Panel-->
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+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<TITLE>psb_geamaxs -- Generalized Infinity Norm</TITLE>
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+  HREF="node29.html">psb_geamax   Infinity-Norm</A>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00055000000000000000">
+psb_geamaxs -- Generalized Infinity Norm</A>
+</H2>
+
+<P>
+This subroutine computes a series of  infinity norms on the columns of
+a  dense matrix  <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">: 
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+res(i) \leftarrow \max_k |x(k,i)|
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="147" HEIGHT="36" BORDER="0"
+ SRC="img36.png"
+ ALT="\begin{displaymath}res(i) \leftarrow \max_k \vert x(k,i)\vert \end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+
+<P>
+<PRE>
+call psb_geamaxs(res, x, desc_a, info)
+</PRE>
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER"><A NAME="1418"></A>
+<TABLE>
+<CAPTION><STRONG>Table 5:</STRONG>
+Data types</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="LEFT"><IMG
+ WIDTH="26" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img32.png"
+ ALT="$res$"></TD>
+<TD ALIGN="LEFT"><IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"></TD>
+<TD ALIGN="LEFT"><B>Subroutine</B></TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">psb_geamaxs</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">psb_geamaxs</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">Short Precision Complex</TD>
+<TD ALIGN="LEFT">psb_geamaxs</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">Long Precision Complex</TD>
+<TD ALIGN="LEFT">psb_geamaxs</TD>
+</TR>
+</TABLE>
+</DIV>
+</TD></TR>
+</TABLE>
+</DIV><P></P>
+<BR>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a rank one or two array 
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90mamax">5</A>. 
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>res</STRONG></DT>
+<DD>is the infinity norm of the columns of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: a number or a rank-one array  of long precision real numbers. 
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<HR>
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00056000000000000000">
+psb_geasum -- 1-Norm of Vector</A>
+</H2>
+
+<P>
+This function computes the 1-norm of a vector <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+If <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is a real vector
+it computes 1-norm as:
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+asum \leftarrow  \|x_i\|
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="92" HEIGHT="28" BORDER="0"
+ SRC="img37.png"
+ ALT="\begin{displaymath}asum \leftarrow \Vert x_i\Vert\end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+else if <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is a  vector then it computes 1-norm  as:
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+asum \leftarrow \|re(x)\|_1 + \|im(x)\|_1
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="205" HEIGHT="28" BORDER="0"
+ SRC="img38.png"
+ ALT="\begin{displaymath}asum \leftarrow \Vert re(x)\Vert _1 + \Vert im(x)\Vert _1\end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+
+<P>
+<PRE>
+psb_geasum(x, desc_a, info)
+</PRE>
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER"><A NAME="1419"></A>
+<TABLE>
+<CAPTION><STRONG>Table 6:</STRONG>
+Data types</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="LEFT"><IMG
+ WIDTH="43" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img39.png"
+ ALT="$asum$"></TD>
+<TD ALIGN="LEFT"><IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"></TD>
+<TD ALIGN="LEFT"><B>Function</B></TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">psb_geasum</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">psb_geasum</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">Short Precision Complex</TD>
+<TD ALIGN="LEFT">psb_geasum</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">Long Precision Complex</TD>
+<TD ALIGN="LEFT">psb_geasum</TD>
+</TR>
+</TABLE>
+</DIV>
+</TD></TR>
+</TABLE>
+</DIV><P></P>
+<BR>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">. 
+
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a rank one or two array 
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90asum">6</A>.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+
+<P>
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>is the 1-norm of vector <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Specified as: a long precision real  number.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
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diff --git a/docs/html/node32.html b/docs/html/node32.html
new file mode 100644
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--- /dev/null
+++ b/docs/html/node32.html
@@ -0,0 +1,436 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_geasums -- Generalized 1-Norm of Vector</TITLE>
+<META NAME="description" CONTENT="psb_geasums -- Generalized 1-Norm of Vector">
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+  HREF="node31.html">psb_geasum   1-Norm</A>
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+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00057000000000000000">
+psb_geasums -- Generalized 1-Norm of Vector</A>
+</H2>
+
+<P>
+This subroutine computes a series of  1-norms on the columns of
+a  dense matrix  <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">: 
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+res(i) \leftarrow \max_k |x(k,i)|
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="147" HEIGHT="36" BORDER="0"
+ SRC="img36.png"
+ ALT="\begin{displaymath}res(i) \leftarrow \max_k \vert x(k,i)\vert \end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+This function computes the 1-norm of a vector <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+If <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is a real vector 
+it computes 1-norm as:
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+res(i) \leftarrow  \|x_i\|
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="94" HEIGHT="28" BORDER="0"
+ SRC="img40.png"
+ ALT="\begin{displaymath}res(i) \leftarrow \Vert x_i\Vert\end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+else if <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is a complex vector then it computes 1-norm  as:
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+res(i) \leftarrow \|re(x)\|_1 + \|im(x)\|_1
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="206" HEIGHT="28" BORDER="0"
+ SRC="img41.png"
+ ALT="\begin{displaymath}res(i) \leftarrow \Vert re(x)\Vert _1 + \Vert im(x)\Vert _1\end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+
+<P>
+<PRE>
+call psb_geasums(res, x, desc_a, info)
+</PRE>
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER"><A NAME="1420"></A>
+<TABLE>
+<CAPTION><STRONG>Table 7:</STRONG>
+Data types</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="LEFT"><IMG
+ WIDTH="26" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img32.png"
+ ALT="$res$"></TD>
+<TD ALIGN="LEFT"><IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"></TD>
+<TD ALIGN="LEFT"><B>Subroutine</B></TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">psb_geasums</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">psb_geasums</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">Short Precision Complex</TD>
+<TD ALIGN="LEFT">psb_geasums</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">Long Precision Complex</TD>
+<TD ALIGN="LEFT">psb_geasums</TD>
+</TR>
+</TABLE>
+</DIV>
+</TD></TR>
+</TABLE>
+</DIV><P></P>
+<BR>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">. 
+
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a rank one or two array 
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90asums">7</A>.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+
+<P>
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>res</STRONG></DT>
+<DD>contains the 1-norm of (the columns of) <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+Short as: a long precision real  number.
+Specified as: a long precision real  number.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+ifstarsubroutinesubroutinepsb_genrm22-Norm of Vector    
+
+<P>
+This function computes the 2-norm of a vector <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+If <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is a double precision real  vector
+it computes 2-norm as:
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+nrm2 \leftarrow \sqrt{x^T x}
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="106" HEIGHT="24" BORDER="0"
+ SRC="img42.png"
+ ALT="\begin{displaymath}nrm2 \leftarrow \sqrt{x^T x}\end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+else if <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is double precision complex vector then it computes 2-norm  as:
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+nrm2 \leftarrow \sqrt{x^H x}
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="108" HEIGHT="24" BORDER="0"
+ SRC="img43.png"
+ ALT="\begin{displaymath}nrm2 \leftarrow \sqrt{x^H x}\end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER"><A NAME="1421"></A>
+<TABLE>
+<CAPTION><STRONG>Table 8:</STRONG>
+Data types</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="LEFT"><IMG
+ WIDTH="43" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img44.png"
+ ALT="$nrm2$"></TD>
+<TD ALIGN="LEFT"><IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"></TD>
+<TD ALIGN="LEFT"><B>Function</B></TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">psb_genrm2</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">psb_genrm2</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">Short Precision Complex</TD>
+<TD ALIGN="LEFT">psb_genrm2</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">Long Precision Complex</TD>
+<TD ALIGN="LEFT">psb_genrm2</TD>
+</TR>
+</TABLE>
+</DIV>
+</TD></TR>
+</TABLE>
+</DIV><P></P>
+<BR>
+
+<P>
+<PRE>
+psb_genrm2(x, desc_a, info)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as:  a rank one or two array 
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90nrm2">8</A>.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+
+<P>
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function Value</STRONG></DT>
+<DD>is the 2-norm of subvector <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Specified as: a long precision real number.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<HR>
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diff --git a/docs/html/node33.html b/docs/html/node33.html
new file mode 100644
index 00000000..13d9345a
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+++ b/docs/html/node33.html
@@ -0,0 +1,273 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_genrm2s -- Generalized 1-Norm of Vector</TITLE>
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+<B> Previous:</B> <A NAME="tex2html572"
+  HREF="node32.html">psb_geasums   Generalized</A>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00058000000000000000">
+psb_genrm2s -- Generalized 1-Norm of Vector</A>
+</H2>
+
+<P>
+This subroutine computes a series of  1-norms on the columns of
+a  dense matrix  <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">: 
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+res(i) \leftarrow \max_k |x(k,i)|
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="147" HEIGHT="36" BORDER="0"
+ SRC="img36.png"
+ ALT="\begin{displaymath}res(i) \leftarrow \max_k \vert x(k,i)\vert \end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+This function computes the 1-norm of a vector <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+If <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is a real vector
+it computes 1-norm as:
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+res(i) \leftarrow \sqrt{x^T x}
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="107" HEIGHT="28" BORDER="0"
+ SRC="img45.png"
+ ALT="\begin{displaymath}res(i) \leftarrow \sqrt{x^T x}\end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+else if <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is a complex vector then it computes 1-norm  as:
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+res(i) \leftarrow \sqrt{x^H x}
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="109" HEIGHT="28" BORDER="0"
+ SRC="img46.png"
+ ALT="\begin{displaymath}res(i) \leftarrow \sqrt{x^H x}\end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+
+<P>
+<PRE>
+call psb_genrm2s(res, x, desc_a, info)
+</PRE>
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER"><A NAME="1422"></A>
+<TABLE>
+<CAPTION><STRONG>Table 9:</STRONG>
+Data types</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="LEFT"><IMG
+ WIDTH="26" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img32.png"
+ ALT="$res$"></TD>
+<TD ALIGN="LEFT"><IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"></TD>
+<TD ALIGN="LEFT"><B>Subroutine</B></TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">psb_genrm2s</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">psb_genrm2s</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">Short Precision Complex</TD>
+<TD ALIGN="LEFT">psb_genrm2s</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">Long Precision Complex</TD>
+<TD ALIGN="LEFT">psb_genrm2s</TD>
+</TR>
+</TABLE>
+</DIV>
+</TD></TR>
+</TABLE>
+</DIV><P></P>
+<BR>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">. 
+
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a rank one or two array 
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90nrm2s">9</A>.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+
+<P>
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>res</STRONG></DT>
+<DD>contains the 1-norm of (the columns of) <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: a long precision real  number.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
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diff --git a/docs/html/node34.html b/docs/html/node34.html
new file mode 100644
index 00000000..833229cd
--- /dev/null
+++ b/docs/html/node34.html
@@ -0,0 +1,227 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_spnrmi -- Infinity Norm of Sparse Matrix</TITLE>
+<META NAME="description" CONTENT="psb_spnrmi -- Infinity Norm of Sparse Matrix">
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+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00059000000000000000">
+psb_spnrmi -- Infinity Norm of Sparse Matrix</A>
+</H2>
+
+<P>
+This function computes the infinity-norm of a matrix <IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">:
+<BR>
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+nrmi \leftarrow \|A\|_\infty
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="101" HEIGHT="28" BORDER="0"
+ SRC="img47.png"
+ ALT="\begin{displaymath}nrmi \leftarrow \Vert A\Vert _\infty \end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+where:
+<DL>
+<DT><STRONG><IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$"></STRONG></DT>
+<DD>represents the global matrix <IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">
+</DD>
+</DL>
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER"><A NAME="1423"></A>
+<TABLE>
+<CAPTION><STRONG>Table 10:</STRONG>
+Data types</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="LEFT"><IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$"></TD>
+<TD ALIGN="LEFT"><B>Function</B></TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">psb_spnrmi</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">psb_spnrmi</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Complex</TD>
+<TD ALIGN="LEFT">psb_spnrmi</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Complex</TD>
+<TD ALIGN="LEFT">psb_spnrmi</TD>
+</TR>
+</TABLE>
+</DIV>
+</TD></TR>
+</TABLE>
+</DIV><P></P>
+<BR>
+
+<P>
+<PRE>
+psb_spnrmi(A, desc_a, info)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the local  portion of the global sparse matrix
+<IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>is the infinity-norm of sparse submatrix <IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Specified as: a long precision real number.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
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diff --git a/docs/html/node35.html b/docs/html/node35.html
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_spmm -- Sparse Matrix by Dense Matrix Product</TITLE>
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+<H2><A NAME="SECTION000510000000000000000">
+psb_spmm -- Sparse Matrix by Dense Matrix Product</A>
+</H2>
+
+<P>
+This subroutine computes the Sparse Matrix by Dense Matrix Product:
+
+<P>
+<BR>
+<DIV ALIGN="RIGHT">
+
+<!-- MATH
+ \begin{equation}
+y \leftarrow \alpha P_r A P_c x + \beta y
+\end{equation}
+ -->
+<TABLE WIDTH="100%" ALIGN="CENTER">
+<TR VALIGN="MIDDLE"><TD ALIGN="CENTER" NOWRAP><A NAME="eq:f90spmm_no_tra"></A><IMG
+ WIDTH="136" HEIGHT="27" BORDER="0"
+ SRC="img48.png"
+ ALT="\begin{displaymath}
+y \leftarrow \alpha P_r A P_c x + \beta y
+\end{displaymath}"></TD>
+<TD WIDTH=10 ALIGN="RIGHT">
+(1)</TD></TR>
+</TABLE>
+<BR CLEAR="ALL"></DIV><P></P>
+<BR>
+<DIV ALIGN="RIGHT">
+
+<!-- MATH
+ \begin{equation}
+y \leftarrow \alpha P_r A^T P_c x + \beta y
+\end{equation}
+ -->
+<TABLE WIDTH="100%" ALIGN="CENTER">
+<TR VALIGN="MIDDLE"><TD ALIGN="CENTER" NOWRAP><A NAME="eq:f90spmm_tra"></A><IMG
+ WIDTH="145" HEIGHT="27" BORDER="0"
+ SRC="img49.png"
+ ALT="\begin{displaymath}
+y \leftarrow \alpha P_r A^T P_c x + \beta y
+\end{displaymath}"></TD>
+<TD WIDTH=10 ALIGN="RIGHT">
+(2)</TD></TR>
+</TABLE>
+<BR CLEAR="ALL"></DIV><P></P>
+<BR>
+<DIV ALIGN="RIGHT">
+
+<!-- MATH
+ \begin{equation}
+y \leftarrow \alpha P_r A^H P_c x + \beta y
+\end{equation}
+ -->
+<TABLE WIDTH="100%" ALIGN="CENTER">
+<TR VALIGN="MIDDLE"><TD ALIGN="CENTER" NOWRAP><A NAME="eq:f90spmm_con"></A><IMG
+ WIDTH="148" HEIGHT="27" BORDER="0"
+ SRC="img50.png"
+ ALT="\begin{displaymath}
+y \leftarrow \alpha P_r A^H P_c x + \beta y
+\end{displaymath}"></TD>
+<TD WIDTH=10 ALIGN="RIGHT">
+(3)</TD></TR>
+</TABLE>
+<BR CLEAR="ALL"></DIV><P></P>
+
+<P>
+where:
+<DL>
+<DT><STRONG><IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"></STRONG></DT>
+<DD>is the global dense submatrix <IMG
+ WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img51.png"
+ ALT="$x_{:, :}$">
+</DD>
+<DT><STRONG><IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"></STRONG></DT>
+<DD>is the global dense submatrix <IMG
+ WIDTH="23" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img52.png"
+ ALT="$y_{:, :}$">
+</DD>
+<DT><STRONG><IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$"></STRONG></DT>
+<DD>is the global sparse submatrix <IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">
+</DD>
+<DT><STRONG><IMG
+ WIDTH="45" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img53.png"
+ ALT="$P_r, P_c$"></STRONG></DT>
+<DD>are the permutation matrices.
+</DD>
+</DL>
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER"><A NAME="1424"></A>
+<TABLE>
+<CAPTION><STRONG>Table 11:</STRONG>
+Data types</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="LEFT"><IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">, <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">, <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">, <IMG
+ WIDTH="14" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img26.png"
+ ALT="$\alpha$">, <IMG
+ WIDTH="14" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img27.png"
+ ALT="$\beta$"></TD>
+<TD ALIGN="LEFT"><B>Subroutine</B></TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">psb_spmm</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">psb_spmm</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Complex</TD>
+<TD ALIGN="LEFT">psb_spmm</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Complex</TD>
+<TD ALIGN="LEFT">psb_spmm</TD>
+</TR>
+</TABLE>
+</DIV>
+</TD></TR>
+</TABLE>
+</DIV><P></P>
+<BR>
+
+<P>
+<PRE>
+call psb_spmm(alpha, a, x, beta, y, desc_a, info)
+call psb_spmm(alpha, a, x, beta, y,desc_a, info, &amp;
+             &amp; trans, work)
+</PRE> 
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>alpha</STRONG></DT>
+<DD>the scalar <IMG
+ WIDTH="14" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img26.png"
+ ALT="$\alpha$">.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a number of the data type indicated in
+Table&nbsp;<A HREF="#tab:f90spmm">11</A>. 
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the local portion of the sparse matrix
+<IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">. 
+
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as:  a rank one or two array
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90spmm">11</A>.  The rank of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> must be the same of <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">. 
+</DD>
+<DT><STRONG>beta</STRONG></DT>
+<DD>the scalar <IMG
+ WIDTH="14" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img27.png"
+ ALT="$\beta$">.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a number of the data type indicated in Table&nbsp;<A HREF="#tab:f90spmm">11</A>.
+</DD>
+<DT><STRONG>y</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">. 
+
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as:  a rank one or two array 
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90spmm">11</A>. The rank of <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"> must be the same of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">. 
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>trans</STRONG></DT>
+<DD>indicate what kind of operation to perform.
+<DL>
+<DT><STRONG>trans = N</STRONG></DT>
+<DD>the operation is specified by equation <A HREF="#eq:f90spmm_no_tra">1</A>
+</DD>
+<DT><STRONG>trans = T</STRONG></DT>
+<DD>the operation is specified by equation
+<A HREF="#eq:f90spmm_tra">2</A>
+</DD>
+<DT><STRONG>trans = C</STRONG></DT>
+<DD>the operation is specified by equation
+<A HREF="#eq:f90spmm_con">3</A>
+</DD>
+</DL>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Default: <IMG
+ WIDTH="78" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img54.png"
+ ALT="$trans = N$">
+<BR>
+Specified as: a character variable.
+
+<P>
+</DD>
+<DT><STRONG>work</STRONG></DT>
+<DD>work array.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a rank one array of the same type of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> and <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"> with
+the TARGET attribute. 
+
+<P>
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>y</STRONG></DT>
+<DD>the local portion of result submatrix <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an array of rank one or two
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90spmm">11</A>.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
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diff --git a/docs/html/node36.html b/docs/html/node36.html
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<H2><A NAME="SECTION000511000000000000000">
+psb_spsm -- Triangular System Solve</A>
+</H2>
+
+<P>
+This subroutine computes the Triangular System Solve:
+
+<P>
+<P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{eqnarray*}
+y &\leftarrow& \alpha P_r T^{-1} P_c x + \beta y\\
+y &\leftarrow& \alpha D P_r T^{-1} P_c x + \beta y\\
+y &\leftarrow& \alpha P_r T^{-1} P_c D x + \beta y\\
+y &\leftarrow& \alpha P_r T^{-T} P_c x + \beta y\\
+y &\leftarrow& \alpha D P_r T^{-T} P_c x + \beta y\\
+y &\leftarrow& \alpha P_r T^{-T} P_c D x + \beta y\\
+y &\leftarrow& \alpha P_r T^{-H} P_c x + \beta y\\
+y &\leftarrow& \alpha D P_r T^{-H} P_c x + \beta y\\
+y &\leftarrow& \alpha P_r T^{-H} P_c D x + \beta y\\
+\end{eqnarray*}
+ -->
+<IMG
+ WIDTH="194" HEIGHT="239" BORDER="0"
+ SRC="img55.png"
+ ALT="\begin{eqnarray*}
+y &amp;\leftarrow&amp; \alpha P_r T^{-1} P_c x + \beta y\\
+y &amp;\leftar...
+...\beta y\\
+y &amp;\leftarrow&amp; \alpha P_r T^{-H} P_c D x + \beta y\\
+\end{eqnarray*}"></DIV>
+<BR CLEAR="ALL"><P></P>
+
+<P>
+where:
+<DL>
+<DT><STRONG><IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"></STRONG></DT>
+<DD>is the global dense submatrix <IMG
+ WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img51.png"
+ ALT="$x_{:, :}$">
+</DD>
+<DT><STRONG><IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"></STRONG></DT>
+<DD>is the global dense submatrix <IMG
+ WIDTH="23" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img52.png"
+ ALT="$y_{:, :}$">
+</DD>
+<DT><STRONG><IMG
+ WIDTH="15" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img56.png"
+ ALT="$T$"></STRONG></DT>
+<DD>is the global sparse block triangular submatrix <IMG
+ WIDTH="15" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img56.png"
+ ALT="$T$">
+</DD>
+<DT><STRONG><IMG
+ WIDTH="18" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img57.png"
+ ALT="$D$"></STRONG></DT>
+<DD>is the scaling diagonal matrix.
+</DD>
+<DT><STRONG><IMG
+ WIDTH="45" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img53.png"
+ ALT="$P_r, P_c$"></STRONG></DT>
+<DD>are the permutation matrices.
+</DD>
+</DL>
+
+<P>
+<PRE>
+call psb_spsm(alpha, t, x, beta, y, desc_a, info)
+call psb_spsm(alpha, t, x, beta, y, desc_a, info,&amp;
+             &amp; trans, unit, choice, diag, work)
+</PRE> 
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER"><A NAME="1425"></A>
+<TABLE>
+<CAPTION><STRONG>Table 12:</STRONG>
+Data types</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="LEFT"><IMG
+ WIDTH="15" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img56.png"
+ ALT="$T$">, <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">, <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">, <IMG
+ WIDTH="18" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img57.png"
+ ALT="$D$">, <IMG
+ WIDTH="14" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img26.png"
+ ALT="$\alpha$">, <IMG
+ WIDTH="14" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img27.png"
+ ALT="$\beta$"></TD>
+<TD ALIGN="LEFT"><B>Subroutine</B></TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">psb_spsm</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">psb_spsm</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Complex</TD>
+<TD ALIGN="LEFT">psb_spsm</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Complex</TD>
+<TD ALIGN="LEFT">psb_spsm</TD>
+</TR>
+</TABLE>
+</DIV>
+</TD></TR>
+</TABLE>
+</DIV><P></P>
+<BR>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>alpha</STRONG></DT>
+<DD>the scalar <IMG
+ WIDTH="14" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img26.png"
+ ALT="$\alpha$">.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a number of the data type indicated in
+Table&nbsp;<A HREF="#tab:f90spsm">12</A>.
+</DD>
+<DT><STRONG>t</STRONG></DT>
+<DD>the global portion of the sparse matrix
+<IMG
+ WIDTH="15" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img56.png"
+ ALT="$T$">.  
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data type specified in
+&#167;&nbsp;<A HREF="node8.html#sec:datastruct">3</A>.
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">. 
+
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as:  a rank one or two array 
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90spsm">12</A>.  The rank of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> must be the same of <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">. 
+</DD>
+<DT><STRONG>beta</STRONG></DT>
+<DD>the scalar <IMG
+ WIDTH="14" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img27.png"
+ ALT="$\beta$">.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a number of the data type indicated in Table&nbsp;<A HREF="#tab:f90spsm">12</A>.
+</DD>
+<DT><STRONG>y</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">. 
+
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as:  a rank one or two array 
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90spsm">12</A>. The rank of <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"> must be the same of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">. 
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>trans</STRONG></DT>
+<DD>specify with <EM>unitd</EM> the operation to perform.
+<DL>
+<DT><STRONG>trans = 'N'</STRONG></DT>
+<DD>the operation is with no transposed matrix
+</DD>
+<DT><STRONG>trans = 'T'</STRONG></DT>
+<DD>the operation is with transposed matrix.
+</DD>
+<DT><STRONG>trans = 'C'</STRONG></DT>
+<DD>the operation is with conjugate transposed matrix.
+</DD>
+</DL>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Default: <IMG
+ WIDTH="78" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img54.png"
+ ALT="$trans = N$">
+<BR>
+Specified as: a character variable.
+</DD>
+<DT><STRONG>unitd</STRONG></DT>
+<DD>specify with <EM>trans</EM> the operation to perform.
+<DL>
+<DT><STRONG>unitd = 'U'</STRONG></DT>
+<DD>the operation is with no scaling
+</DD>
+<DT><STRONG>unitd = 'L'</STRONG></DT>
+<DD>the operation is with left scaling
+</DD>
+<DT><STRONG>unitd = 'R'</STRONG></DT>
+<DD>the operation is with right scaling.
+</DD>
+</DL>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Default: <IMG
+ WIDTH="76" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img58.png"
+ ALT="$unitd = U$">
+<BR>
+Specified as: a character variable.
+</DD>
+<DT><STRONG>choice</STRONG></DT>
+<DD>specifies the update of overlap elements to be performed
+  on exit:
+<DL>
+<DT></DT>
+<DD><code>psb_none_</code>
+</DD>
+<DT></DT>
+<DD><code>psb_sum_</code>
+</DD>
+<DT></DT>
+<DD><code>psb_avg_</code>
+</DD>
+<DT></DT>
+<DD><code>psb_square_root_</code>
+</DD>
+</DL>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Default: <code>psb_avg_</code>
+<BR>
+Specified as: an integer variable.
+</DD>
+<DT><STRONG>diag</STRONG></DT>
+<DD>the diagonal scaling matrix.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Default: <!-- MATH
+ $diag(1) = 1 (no scaling)$
+ -->
+<IMG
+ WIDTH="165" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img59.png"
+ ALT="$diag(1) = 1 (no scaling)$">
+<BR>
+Specified as: a rank one  array containing numbers of the type
+indicated in Table&nbsp;<A HREF="#tab:f90spsm">12</A>.
+</DD>
+<DT><STRONG>work</STRONG></DT>
+<DD>a work array. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a rank one array of the same type of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> with the
+TARGET attribute. 
+
+<P>
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>y</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">. 
+
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an array of rank one or two
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90spsm">12</A>.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
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diff --git a/docs/html/node37.html b/docs/html/node37.html
new file mode 100644
index 00000000..9132d4d4
--- /dev/null
+++ b/docs/html/node37.html
@@ -0,0 +1,84 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>Communication routines</TITLE>
+<META NAME="description" CONTENT="Communication routines">
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+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html628"
+  HREF="node38.html">psb_halo   Halo</A>
+<B> Up:</B> <A NAME="tex2html624"
+  HREF="userhtml.html">userhtml</A>
+<B> Previous:</B> <A NAME="tex2html618"
+  HREF="node36.html">psb_spsm   Triangular</A>
+ &nbsp; <B>  <A NAME="tex2html626"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H1><A NAME="SECTION00060000000000000000">
+Communication routines</A>
+</H1>
+The routines in this chapter implement various global communication operators
+on vectors associated with a discretization mesh. For auxiliary communication
+routines not tied to a discretization space see&nbsp;<A HREF="node42.html#sec:toolsrout">6</A>.
+
+<P>
+<BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
+
+<UL>
+<LI><A NAME="tex2html629"
+  HREF="node38.html">psb_halo -- Halo Data Communication</A>
+<LI><A NAME="tex2html630"
+  HREF="node39.html">psb_ovrl -- Overlap Update</A>
+<LI><A NAME="tex2html631"
+  HREF="node40.html">psb_gather -- Gather Global Dense Matrix</A>
+<LI><A NAME="tex2html632"
+  HREF="node41.html">psb_scatter -- Scatter Global Dense Matrix</A>
+</UL>
+<!--End of Table of Child-Links-->
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node38.html b/docs/html/node38.html
new file mode 100644
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+++ b/docs/html/node38.html
@@ -0,0 +1,655 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_halo -- Halo Data Communication</TITLE>
+<META NAME="description" CONTENT="psb_halo -- Halo Data Communication">
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+<BR>
+<B> Next:</B> <A NAME="tex2html644"
+  HREF="node39.html">psb_ovrl   Overlap</A>
+<B> Up:</B> <A NAME="tex2html640"
+  HREF="node37.html">Communication routines</A>
+<B> Previous:</B> <A NAME="tex2html634"
+  HREF="node37.html">Communication routines</A>
+ &nbsp; <B>  <A NAME="tex2html642"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00061000000000000000">
+psb_halo -- Halo Data Communication</A>
+</H2>
+
+<P>
+These subroutines gathers the values of the halo
+elements, and  (optionally) scale the result:
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+x \leftarrow \alpha x
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="53" HEIGHT="24" BORDER="0"
+ SRC="img60.png"
+ ALT="\begin{displaymath}x \leftarrow \alpha x \end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+where:
+<DL>
+<DT><STRONG><IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"></STRONG></DT>
+<DD>is a global dense  submatrix.
+</DD>
+</DL>
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER"><A NAME="2669"></A>
+<TABLE>
+<CAPTION><STRONG>Table 13:</STRONG>
+Data types</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="LEFT"><IMG
+ WIDTH="14" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img26.png"
+ ALT="$\alpha$">, <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"></TD>
+<TD ALIGN="LEFT"><B>Subroutine</B></TD>
+</TR>
+<TR><TD ALIGN="LEFT">Integer</TD>
+<TD ALIGN="LEFT">psb_halo</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">psb_halo</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">psb_halo</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Complex</TD>
+<TD ALIGN="LEFT">psb_halo</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Complex</TD>
+<TD ALIGN="LEFT">psb_halo</TD>
+</TR>
+</TABLE>
+</DIV>
+</TD></TR>
+</TABLE>
+</DIV><P></P>
+<BR>
+
+<P>
+<PRE>
+call psb_halo(x, desc_a, info)
+call psb_halo(x, desc_a, info, alpha, work, data)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>global dense matrix <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as:  a rank one or two array with the TARGET attribute
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90halo">13</A>.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>alpha</STRONG></DT>
+<DD>the scalar <IMG
+ WIDTH="14" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img26.png"
+ ALT="$\alpha$">.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Default: <IMG
+ WIDTH="73" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img61.png"
+ ALT="$alpha = 1 $">
+<BR>
+Specified as: a number of the data type indicated in Table&nbsp;<A HREF="#tab:f90halo">13</A>.
+</DD>
+<DT><STRONG>work</STRONG></DT>
+<DD>the work array. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a rank one array of the same type of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> with the
+POINTER attribute.
+</DD>
+<DT><STRONG>data</STRONG></DT>
+<DD>index list selector.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B> 
+<BR>
+Specified as: an integer. Values:<code>psb_comm_halo_</code>,<code>psb_comm_mov_</code>,
+<code>psb_comm_ext_</code>, default: <code>psb_comm_halo_</code>. Chooses the
+index list on which to base the data exchange. 
+
+<P>
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>global dense result matrix <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Returned as:  a rank one or two array 
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90halo">13</A>.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>the local portion of result submatrix <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$">.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value that contains an error code. 
+</DD>
+</DL>
+
+<DIV ALIGN="CENTER"><A NAME="fig:try8x8"></A><A NAME="2671"></A>
+<TABLE>
+<CAPTION ALIGN="BOTTOM"><STRONG>Figure 6:</STRONG>
+Sample discretization mesh.</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ $\rotatebox{-90}{\includegraphics[scale=0.45]{figures/try8x8}}$
+ -->
+<IMG
+ WIDTH="1" HEIGHT="2" ALIGN="BOTTOM" BORDER="0"
+ SRC="img62.png"
+ ALT="\rotatebox{-90}{\includegraphics[scale=0.45]{figures/try8x8}}">
+</DIV></TD></TR>
+</TABLE>
+</DIV>
+
+<P>
+<FONT SIZE="+1"><B>Usage Example</B></FONT>
+Consider the discretization mesh depicted in fig.&nbsp;<A HREF="#fig:try8x8">6</A>,
+partitioned among two processes as shown by the dashed line; the data
+distribution is such that each process will own 32 entries in the
+index space, with a halo made of 8 entries placed at local indices 33
+through 40. If process 0 assigns an initial value of 1 to its entries
+in the <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> vector, and process 1 assigns a value of 2, then after a
+call to <code>psb_halo</code> the contents of the local vectors will be the
+following: 
+<BR>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 ALIGN="CENTER">
+<TR><TD ALIGN="CENTER" COLSPAN=3><FONT SIZE="-1">
+Process  0</FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="CENTER" COLSPAN=3><FONT SIZE="-1">
+Process  1</FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  I  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   GLOB(I) </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1"> X(I)  </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   I </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1"> GLOB(I) </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1"> X(I) </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  1   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    1  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   1  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  33  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1">  
+  2   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    2  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   2  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  34  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  3   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    3  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   3  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  35  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  4   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    4  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   4  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  36  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  5   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    5  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   5  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  37  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  6   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    6  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   6  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  38  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  7   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    7  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   7  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  39  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  8   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    8  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   8  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  40  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  9   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    9  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   9  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  41  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 10   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   10  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  10  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  42  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 11   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   11  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  11  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  43  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 12   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   12  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  12  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  44  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 13   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   13  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  13  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  45  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 14   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   14  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  14  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  46  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 15   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   15  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  15  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  47  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 16   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   16  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  16  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  48  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 17   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   17  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  17  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  49  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 18   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   18  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  18  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  50  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 19   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   19  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  19  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  51  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 20   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   20  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  20  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  52  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1">  
+21   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   21  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  21  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  53  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+22   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   22  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  22  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  54  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+23   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   23  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  23  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  55  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+24   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   24  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  24  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  56  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+25   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   25  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  25  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  57  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+26   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   26  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  26  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  58  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+27   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   27  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  27  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  59  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+28   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   28  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  28  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  60  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+29   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   29  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  29  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  61  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+30   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   30  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  30  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  62  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+31   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   31  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  31  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  63  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+32   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   32  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  32  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  64  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+33   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   33  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  2.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  33  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  25  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+34   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   34  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  2.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  34  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  26  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+35   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   35  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  2.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  35  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  27  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+36   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   36  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  2.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  36  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  28  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+37   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   37  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  2.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  37  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  29  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+38   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   38  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  2.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  38  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  30  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+39   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   39  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  2.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  39  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  31  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+40   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   40  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  2.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  40  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  32  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.0 </FONT></TD>
+</TR>
+</TABLE></DIV>
+<BR>
+
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+
+<H2><A NAME="SECTION00062000000000000000">
+psb_ovrl -- Overlap Update</A>
+</H2>
+
+<P>
+These subroutines applies an overlap operator to the input vector:
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+x \leftarrow Q x
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="55" HEIGHT="27" BORDER="0"
+ SRC="img63.png"
+ ALT="\begin{displaymath}x \leftarrow Q x \end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+where:
+<DL>
+<DT><STRONG><IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"></STRONG></DT>
+<DD>is the global dense submatrix <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">
+</DD>
+<DT><STRONG><IMG
+ WIDTH="16" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img64.png"
+ ALT="$Q$"></STRONG></DT>
+<DD>is the overlap operator; it is the composition of two
+operators <IMG
+ WIDTH="22" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img65.png"
+ ALT="$ P_a$"> and <IMG
+ WIDTH="26" HEIGHT="16" ALIGN="BOTTOM" BORDER="0"
+ SRC="img66.png"
+ ALT="$ P^{T}$">. 
+</DD>
+</DL>
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER"><A NAME="2673"></A>
+<TABLE>
+<CAPTION><STRONG>Table 14:</STRONG>
+Data types</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="LEFT"><IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"></TD>
+<TD ALIGN="LEFT"><B>Subroutine</B></TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">psb_ovrl</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">psb_ovrl</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Complex</TD>
+<TD ALIGN="LEFT">psb_ovrl</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Complex</TD>
+<TD ALIGN="LEFT">psb_ovrl</TD>
+</TR>
+</TABLE>
+</DIV>
+</TD></TR>
+</TABLE>
+</DIV><P></P>
+<BR>
+
+<P>
+<PRE>
+call psb_ovrl(x, desc_a, info)
+call psb_ovrl(x, desc_a, info, update=update_type, work=work)
+</PRE> 
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>global dense matrix <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as:  a rank one or two array 
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90ovrl">14</A>.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>update</STRONG></DT>
+<DD>Update operator. 
+<BR><DL>
+<DT><STRONG>update = psb_none_</STRONG></DT>
+<DD>Do nothing;
+</DD>
+<DT><STRONG>update = psb_add_</STRONG></DT>
+<DD>Sum overlap entries, i.e. apply <IMG
+ WIDTH="27" HEIGHT="16" ALIGN="BOTTOM" BORDER="0"
+ SRC="img67.png"
+ ALT="$P^T$">;
+</DD>
+<DT><STRONG>update = psb_avg_</STRONG></DT>
+<DD>Average overlap entries, i.e. apply <IMG
+ WIDTH="44" HEIGHT="35" ALIGN="MIDDLE" BORDER="0"
+ SRC="img68.png"
+ ALT="$P_aP^T$">;
+</DD>
+</DL>
+Scope: <B>global</B> 
+<BR>
+Intent: <B>in</B>.
+<BR>
+Default: <!-- MATH
+ $update\_type = psb\_avg\_$
+ -->
+<IMG
+ WIDTH="166" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img69.png"
+ ALT="$update\_type = psb\_avg\_ $">
+<BR>
+Scope: <B>global</B> 
+<BR>
+Specified as: a integer variable.
+</DD>
+<DT><STRONG>work</STRONG></DT>
+<DD>the work array. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a one dimensional array of the same type of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+
+<P>
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>global dense result matrix <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an  array of rank one or two
+containing numbers of type specified in
+Table&nbsp;<A HREF="#tab:f90ovrl">14</A>.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>If there is no overlap in the data distribution associated with
+  the descriptor, no operations are performed;
+</LI>
+<LI>The operator <IMG
+ WIDTH="26" HEIGHT="16" ALIGN="BOTTOM" BORDER="0"
+ SRC="img66.png"
+ ALT="$ P^{T}$"> performs the reduction sum of overlap
+elements; it is a ``prolongation'' operator <IMG
+ WIDTH="27" HEIGHT="16" ALIGN="BOTTOM" BORDER="0"
+ SRC="img67.png"
+ ALT="$P^T$"> that
+replicates overlap elements, accounting for the physical replication
+of data;
+</LI>
+<LI>The operator <IMG
+ WIDTH="22" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img65.png"
+ ALT="$ P_a$"> performs a scaling on the overlap elements by
+the amount of replication; thus, when combined with the reduction
+operator, it implements the average of replicated elements over all of
+their instances. 
+</LI>
+</OL>
+
+<P>
+
+<DIV ALIGN="CENTER"><A NAME="fig:try8x8_ov"></A><A NAME="2675"></A>
+<TABLE>
+<CAPTION ALIGN="BOTTOM"><STRONG>Figure 7:</STRONG>
+Sample discretization mesh.</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ $\rotatebox{-90}{\includegraphics[scale=0.65]{figures/try8x8_ov}}$
+ -->
+<IMG
+ WIDTH="76" HEIGHT="2" ALIGN="BOTTOM" BORDER="0"
+ SRC="img70.png"
+ ALT="\rotatebox{-90}{\includegraphics[scale=0.65]{figures/try8x8_ov}}">
+</DIV></TD></TR>
+</TABLE>
+</DIV>
+
+<FONT SIZE="+1"><B>Example of use</B></FONT>
+Consider the discretization mesh depicted in fig.&nbsp;<A HREF="#fig:try8x8_ov">7</A>,
+partitioned among two processes as shown by the dashed lines, with an
+overlap of 1 extra layer with respect to the partition of
+fig.&nbsp;<A HREF="node38.html#fig:try8x8">6</A>; the data 
+distribution is such that each process will own 40 entries in the
+index space, with an overlap of 16  entries placed at local indices 25 
+through 40; the halo will run from local index 41 through local index 48.. If process 0 assigns an initial value of 1 to its entries
+in the <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> vector, and process 1 assigns a value of 2, then after a
+call to <code>psb_ovrl</code> with <code>psb_avg_</code> and a call to
+<code>psb_halo_</code> the contents of the local vectors will be the
+following (showing a transition among the two subdomains)  
+
+<P>
+<BR>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 ALIGN="CENTER">
+<TR><TD ALIGN="CENTER" COLSPAN=3><FONT SIZE="-1">
+Process  0</FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="CENTER" COLSPAN=3><FONT SIZE="-1">
+Process  1</FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  I  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   GLOB(I) </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1"> X(I)  </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   I </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1"> GLOB(I) </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1"> X(I) </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  1   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    1  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   1  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  33  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.5 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1">  
+  2   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    2  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   2  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  34  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.5 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  3   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    3  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   3  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  35  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.5 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  4   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    4  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   4  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  36  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.5 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  5   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    5  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   5  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  37  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.5 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  6   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    6  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   6  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  38  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.5 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  7   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    7  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   7  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  39  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.5 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  8   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    8  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   8  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  40  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.5 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+  9   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">    9  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">   9  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  41  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 10   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   10  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  10  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  42  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 11   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   11  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  11  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  43  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 12   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   12  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  12  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  44  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 13   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   13  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  13  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  45  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 14   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   14  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  14  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  46  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 15   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   15  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  15  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  47  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 16   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   16  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  16  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  48  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 17   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   17  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  17  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  49  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 18   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   18  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  18  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  50  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 19   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   19  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  19  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  51  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 20   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   20  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  20  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  52  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1">  
+ 21   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   21  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  21  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  53  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 22   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   22  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  22  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  54  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 23   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   23  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  23  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  55  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 24   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   24  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  24  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  56  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 25   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   25  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.5   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  25  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  57  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 26   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   26  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.5   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  26  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  58  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 27   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   27  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.5   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  27  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  59  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 28   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   28  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.5   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  28  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  60  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 29   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   29  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.5   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  29  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  61  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 30   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   30  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.5   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  30  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  62  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 31   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   31  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.5   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  31  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  63  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 32   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   32  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.5   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  32  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  64  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   2.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 33   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   33  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.5   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  33  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  25  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.5 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 34   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   34  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.5   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  34  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  26  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.5 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 35   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   35  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.5   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  35  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  27  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.5 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 36   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   36  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.5   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  36  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  28  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.5 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 37   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   37  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.5   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  37  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  29  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.5 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 38   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   38  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.5   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  38  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  30  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.5 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 39   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   39  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.5   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  39  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  31  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.5 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 40   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   40  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  1.5   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  40  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  32  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.5 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 41   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   41  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  2.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  41  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  17  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 42   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   42  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  2.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  42  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  18  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 43   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   43  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  2.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  43  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  19  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 44   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   44  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  2.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  44  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  20  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 45   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   45  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  2.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  45  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  21  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 46   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   46  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  2.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  46  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  22  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 47   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   47  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  2.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  47  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  23  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.0 </FONT></TD>
+</TR>
+<TR><TD ALIGN="RIGHT"><FONT SIZE="-1"> 
+ 48   </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   48  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  2.0   </FONT></TD>
+<TD ALIGN="LEFT">&nbsp;</TD><TD ALIGN="RIGHT"><FONT SIZE="-1">  48  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">  24  </FONT></TD>
+<TD ALIGN="RIGHT"><FONT SIZE="-1">   1.0 </FONT></TD>
+</TR>
+</TABLE></DIV>
+<BR>
+
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
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+<TITLE>Basic Nomenclature</TITLE>
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+<H2><A NAME="SECTION00031000000000000000">
+Basic Nomenclature</A>
+</H2>
+
+<P>
+Our computational model implies that the data allocation on the
+parallel distributed memory machine is guided by the structure of the
+physical model, and specifically by the discretization mesh of the
+PDE. 
+
+<P>
+Each point of the discretization mesh will have (at least) one
+associated equation/variable, and therefore one index. We say that
+point  <IMG
+ WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img3.png"
+ ALT="$i$"> <EM>depends</EM> on point <IMG
+ WIDTH="11" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
+ SRC="img4.png"
+ ALT="$j$"> if the  equation for a
+variable associated with <IMG
+ WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img3.png"
+ ALT="$i$"> contains a term in <IMG
+ WIDTH="11" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
+ SRC="img4.png"
+ ALT="$j$">,  or equivalently
+if <IMG
+ WIDTH="53" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img5.png"
+ ALT="$a_{ij} \ne0$">.  
+After the partition of the discretization mesh into <EM>sub-domains</EM>
+assigned to the parallel processes,
+we classify the  points of a given sub-domain as following.
+<DL>
+<DT><STRONG>Internal.</STRONG></DT>
+<DD>An internal point of
+ a given domain <EM>depends</EM> only on  points of the
+same domain. 
+If all points of a domain are assigned to one
+process, then a computational step (e.g., a
+matrix-vector product) of the 
+equations associated with the internal points  requires no data
+items from other domains and no communications.
+
+<P>
+</DD>
+<DT><STRONG>Boundary.</STRONG></DT>
+<DD>A point of
+a given domain is a boundary point if it <EM>depends</EM> on  points
+belonging to other domains.
+
+<P>
+</DD>
+<DT><STRONG>Halo.</STRONG></DT>
+<DD>A halo point for a given domain is a point belonging to
+another domain such that there is a boundary point which <EM>depends</EM>
+on it. Whenever performing a computational step, such as a
+matrix-vector product, the values associated with halo points are
+requested from other domains. A boundary point of a given 
+domain is usually a halo point for some other domain<A NAME="tex2html3"
+  HREF="footnode.html#foot173"><SUP>2</SUP></A>; therefore
+the cardinality of the boundary points set denotes the amount of data
+ sent to other domains. 
+</DD>
+<DT><STRONG>Overlap.</STRONG></DT>
+<DD>An overlap point is a boundary point assigned to
+multiple domains. Any operation that involves an overlap point
+has to be replicated for each assignment. 
+</DD>
+</DL>
+Overlap points do not usually exist in the basic data
+distributions; however they are a feature of Domain Decomposition
+Schwarz preconditioners which are the subject of related research
+work&nbsp;[<A
+ HREF="node105.html#2007c">3</A>,<A
+ HREF="node105.html#2007d">2</A>].
+
+<P>
+We denote the sets of  internal, boundary and halo points for a given
+subdomain  by <IMG
+ WIDTH="13" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img6.png"
+ ALT="$\cal I$">, <IMG
+ WIDTH="15" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img7.png"
+ ALT="$\cal B$"> and <IMG
+ WIDTH="17" HEIGHT="15" ALIGN="BOTTOM" BORDER="0"
+ SRC="img8.png"
+ ALT="$\cal H$">.
+Each subdomain is assigned to one process; each process usually
+owns one subdomain, although the user may choose to assign more than
+one subdomain to a process.  If each process <IMG
+ WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img3.png"
+ ALT="$i$"> owns one
+subdomain, the number of rows in the local sparse matrix is
+<!-- MATH
+ $|{\cal I}_i| + |{\cal B}_i|$
+ -->
+<IMG
+ WIDTH="71" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img9.png"
+ ALT="$\vert{\cal I}_i\vert + \vert{\cal B}_i\vert$">, and the number of local columns
+(i.e. those for which there exists at least one non-zero entry in the
+local rows)  is <!-- MATH
+ $|{\cal I}_i| + |{\cal B}_i| +|{\cal H}_i|$
+ -->
+<IMG
+ WIDTH="117" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img10.png"
+ ALT="$\vert{\cal I}_i\vert + \vert{\cal B}_i\vert +\vert{\cal H}_i\vert$">.
+
+<P>
+
+<DIV ALIGN="CENTER"><A NAME="fig:points"></A><A NAME="224"></A>
+<TABLE>
+<CAPTION ALIGN="BOTTOM"><STRONG>Figure 2:</STRONG>
+Point classfication.</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ $\rotatebox{-90}{\includegraphics[scale=0.65]{figures/points}}$
+ -->
+<IMG
+ WIDTH="132" HEIGHT="2" ALIGN="BOTTOM" BORDER="0"
+ SRC="img11.png"
+ ALT="\rotatebox{-90}{\includegraphics[scale=0.65]{figures/points}}">
+</DIV></TD></TR>
+</TABLE>
+</DIV>
+
+<P>
+This classification of mesh points guides the naming scheme that we
+adopted in the library internals and in the data structures. We
+explicitly note that ``Halo'' points are also often called ``ghost''
+points in the literature. 
+
+<P>
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<HEAD>
+<TITLE>psb_gather -- Gather Global Dense Matrix</TITLE>
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+  HREF="node41.html">psb_scatter   Scatter</A>
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+  HREF="node37.html">Communication routines</A>
+<B> Previous:</B> <A NAME="tex2html658"
+  HREF="node39.html">psb_ovrl   Overlap</A>
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+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00063000000000000000">
+psb_gather -- Gather Global Dense Matrix</A>
+</H2>
+
+<P>
+These subroutines collect the portions of global dense matrix
+distributed over all process into one single array stored on one
+process.
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+glob\_x \leftarrow collect(loc\_x_i)
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="163" HEIGHT="28" BORDER="0"
+ SRC="img71.png"
+ ALT="\begin{displaymath}glob\_x \leftarrow collect(loc\_x_i) \end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+where:
+<DL>
+<DT><STRONG><IMG
+ WIDTH="46" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img72.png"
+ ALT="$glob\_x$"></STRONG></DT>
+<DD>is the global submatrix <!-- MATH
+ $glob\_x_{1:m,1:n}$
+ -->
+<IMG
+ WIDTH="91" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img73.png"
+ ALT="$glob\_x_{1:m,1:n}$">
+</DD>
+<DT><STRONG><IMG
+ WIDTH="43" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img74.png"
+ ALT="$loc\_x_i$"></STRONG></DT>
+<DD>is the local portion of global dense matrix on
+process <IMG
+ WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img3.png"
+ ALT="$i$">.
+</DD>
+<DT><STRONG><IMG
+ WIDTH="49" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img75.png"
+ ALT="$collect$"></STRONG></DT>
+<DD>is the collect function.
+</DD>
+</DL>
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER"><A NAME="2677"></A>
+<TABLE>
+<CAPTION><STRONG>Table 15:</STRONG>
+Data types</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="LEFT"><IMG
+ WIDTH="33" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img76.png"
+ ALT="$x_i, y$"></TD>
+<TD ALIGN="LEFT"><B>Subroutine</B></TD>
+</TR>
+<TR><TD ALIGN="LEFT">Integer</TD>
+<TD ALIGN="LEFT">psb_gather</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">psb_gather</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">psb_gather</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Complex</TD>
+<TD ALIGN="LEFT">psb_gather</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Complex</TD>
+<TD ALIGN="LEFT">psb_gather</TD>
+</TR>
+</TABLE>
+</DIV>
+</TD></TR>
+</TABLE>
+</DIV><P></P>
+<BR>
+
+<P>
+<PRE>
+call psb_gather(glob_x, loc_x, desc_a, info, root)
+call psb_gather(glob_x, loc_x, desc_a, info, root)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>loc_x</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="46" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img72.png"
+ ALT="$glob\_x$">. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a rank one or two array containing numbers of the type
+indicated in Table&nbsp;<A HREF="#tab:gather">15</A>.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>root</STRONG></DT>
+<DD>The process that holds the global copy. If <IMG
+ WIDTH="75" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img77.png"
+ ALT="$root=-1$"> all
+  the processes will have a copy of the global vector.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer variable <!-- MATH
+ $-1\le root\le np-1$
+ -->
+<IMG
+ WIDTH="140" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img78.png"
+ ALT="$-1\le root\le np-1$">, default <IMG
+ WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img79.png"
+ ALT="$-1$">. 
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>glob_x</STRONG></DT>
+<DD>The array where the local parts must be gathered.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: a rank one or two array.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<HR>
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diff --git a/docs/html/node41.html b/docs/html/node41.html
new file mode 100644
index 00000000..e853ed03
--- /dev/null
+++ b/docs/html/node41.html
@@ -0,0 +1,273 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_scatter -- Scatter Global Dense Matrix</TITLE>
+<META NAME="description" CONTENT="psb_scatter -- Scatter Global Dense Matrix">
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+  HREF="node40.html">psb_gather   Gather</A>
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+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00064000000000000000">
+psb_scatter -- Scatter Global Dense Matrix</A>
+</H2>
+
+<P>
+These subroutines scatters the portions of global dense matrix owned
+by a process to all the processes in the processes grid.
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER">
+<!-- MATH
+ \begin{displaymath}
+loc\_x_i \leftarrow scatter(glob\_x)
+\end{displaymath}
+ -->
+
+<IMG
+ WIDTH="167" HEIGHT="28" BORDER="0"
+ SRC="img80.png"
+ ALT="\begin{displaymath}loc\_x_i \leftarrow scatter(glob\_x) \end{displaymath}">
+</DIV>
+<BR CLEAR="ALL">
+<P></P>
+where:
+<DL>
+<DT><STRONG><IMG
+ WIDTH="46" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img72.png"
+ ALT="$glob\_x$"></STRONG></DT>
+<DD>is the global matrix <!-- MATH
+ $glob\_x_{1:m,1:n}$
+ -->
+<IMG
+ WIDTH="91" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img73.png"
+ ALT="$glob\_x_{1:m,1:n}$">
+</DD>
+<DT><STRONG><IMG
+ WIDTH="43" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img74.png"
+ ALT="$loc\_x_i$"></STRONG></DT>
+<DD>is the local portion of global dense matrix on
+process <IMG
+ WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img3.png"
+ ALT="$i$">.
+</DD>
+<DT><STRONG><IMG
+ WIDTH="54" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img81.png"
+ ALT="$scatter$"></STRONG></DT>
+<DD>is the scatter function.
+</DD>
+</DL>
+
+<P>
+<BR><P></P>
+<DIV ALIGN="CENTER"><A NAME="2678"></A>
+<TABLE>
+<CAPTION><STRONG>Table 16:</STRONG>
+Data types</CAPTION>
+<TR><TD>
+<DIV ALIGN="CENTER">
+<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
+<TR><TD ALIGN="LEFT"><IMG
+ WIDTH="33" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img76.png"
+ ALT="$x_i, y$"></TD>
+<TD ALIGN="LEFT"><B>Subroutine</B></TD>
+</TR>
+<TR><TD ALIGN="LEFT">Integer</TD>
+<TD ALIGN="LEFT">psb_scatter</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Real</TD>
+<TD ALIGN="LEFT">psb_scatter</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Real</TD>
+<TD ALIGN="LEFT">psb_scatter</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Short Precision Complex</TD>
+<TD ALIGN="LEFT">psb_scatter</TD>
+</TR>
+<TR><TD ALIGN="LEFT">Long Precision Complex</TD>
+<TD ALIGN="LEFT">psb_scatter</TD>
+</TR>
+</TABLE>
+</DIV>
+</TD></TR>
+</TABLE>
+</DIV><P></P>
+<BR>
+
+<P>
+<PRE>
+call psb_scatter(glob_x, loc_x, desc_a, info, root)
+call psb_scatter(glob_x, loc_x, desc_a, info, root)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>glob_x</STRONG></DT>
+<DD>The array that must be scattered into local pieces.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a rank one or two array.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>contains data structures for communications.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>root</STRONG></DT>
+<DD>The process that holds the global copy. If <IMG
+ WIDTH="75" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img77.png"
+ ALT="$root=-1$"> all
+  the processes have a copy of the global vector.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer variable <!-- MATH
+ $-1\le root\le np-1$
+ -->
+<IMG
+ WIDTH="140" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img78.png"
+ ALT="$-1\le root\le np-1$">, default <IMG
+ WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img79.png"
+ ALT="$-1$">. 
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>loc_x</STRONG></DT>
+<DD>the local portion of global dense matrix
+<IMG
+ WIDTH="46" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img72.png"
+ ALT="$glob\_x$">. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: a rank one or two array containing numbers of the type
+indicated in Table&nbsp;<A HREF="#tab:scatter">16</A>.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+  HREF="node43.html">psb_cdall   Allocates</A>
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+  HREF="node41.html">psb_scatter   Scatter</A>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H1><A NAME="SECTION00070000000000000000"></A>
+<A NAME="sec:toolsrout"></A>
+<BR>
+Data management routines
+</H1>
+
+<P>
+<BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
+
+<UL>
+<LI><A NAME="tex2html691"
+  HREF="node43.html">psb_cdall -- Allocates a communication descriptor</A>
+<LI><A NAME="tex2html692"
+  HREF="node44.html">psb_cdins -- Communication descriptor insert routine</A>
+<LI><A NAME="tex2html693"
+  HREF="node45.html">psb_cdasb -- Communication descriptor assembly routine</A>
+<LI><A NAME="tex2html694"
+  HREF="node46.html">psb_cdcpy -- Copies a communication descriptor</A>
+<LI><A NAME="tex2html695"
+  HREF="node47.html">psb_cdfree -- Frees a communication descriptor</A>
+<LI><A NAME="tex2html696"
+  HREF="node48.html">psb_cdbldext -- Build an extended  communication
+  descriptor</A>
+<LI><A NAME="tex2html697"
+  HREF="node49.html">psb_spall -- Allocates a sparse matrix</A>
+<LI><A NAME="tex2html698"
+  HREF="node50.html">psb_spins -- Insert a cloud of elements into a sparse
+  matrix</A>
+<LI><A NAME="tex2html699"
+  HREF="node51.html">psb_spasb -- Sparse matrix assembly routine</A>
+<LI><A NAME="tex2html700"
+  HREF="node52.html">psb_spfree -- Frees a sparse matrix</A>
+<LI><A NAME="tex2html701"
+  HREF="node53.html">psb_sprn -- Reinit sparse matrix structure for psblas
+  routines.</A>
+<LI><A NAME="tex2html702"
+  HREF="node54.html">psb_geall -- Allocates a dense matrix</A>
+<LI><A NAME="tex2html703"
+  HREF="node55.html">psb_geins -- Dense matrix insertion routine</A>
+<LI><A NAME="tex2html704"
+  HREF="node56.html">psb_geasb -- Assembly a dense matrix</A>
+<LI><A NAME="tex2html705"
+  HREF="node57.html">psb_gefree -- Frees a dense matrix</A>
+<LI><A NAME="tex2html706"
+  HREF="node58.html">psb_gelp -- Applies a left permutation to a dense
+  matrix</A>
+<LI><A NAME="tex2html707"
+  HREF="node59.html">psb_glob_to_loc -- Global to local indices
+  convertion</A>
+<LI><A NAME="tex2html708"
+  HREF="node60.html">psb_loc_to_glob -- Local to global indices
+  conversion</A>
+<LI><A NAME="tex2html709"
+  HREF="node61.html">psb_is_owned </A>
+<LI><A NAME="tex2html710"
+  HREF="node62.html">psb_owned_index </A>
+<LI><A NAME="tex2html711"
+  HREF="node63.html">psb_is_local </A>
+<LI><A NAME="tex2html712"
+  HREF="node64.html">psb_local_index </A>
+<LI><A NAME="tex2html713"
+  HREF="node65.html">psb_get_boundary -- Extract list of boundary elements</A>
+<LI><A NAME="tex2html714"
+  HREF="node66.html">psb_get_overlap -- Extract list of overlap elements</A>
+<LI><A NAME="tex2html715"
+  HREF="node67.html">psb_sp_getrow -- Extract row(s) from a sparse matrix</A>
+<LI><A NAME="tex2html716"
+  HREF="node68.html">psb_sizeof -- Memory occupation</A>
+<LI><A NAME="tex2html717"
+  HREF="node69.html">Sorting utilities</A>
+</UL>
+<!--End of Table of Child-Links-->
+<BR><HR>
+
+</BODY>
+</HTML>
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+  HREF="node44.html">psb_cdins   Communication</A>
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+<H2><A NAME="SECTION00071000000000000000">
+psb_cdall -- Allocates a communication descriptor</A>
+</H2>
+
+<P>
+<PRE>
+call psb_cdall(icontxt, desc_a, info,mg=mg,parts=parts)
+call psb_cdall(icontxt, desc_a, info,vg=vg,flag=flag)
+call psb_cdall(icontxt, desc_a, info,vl=vl)
+call psb_cdall(icontxt, desc_a, info,nl=nl)
+call psb_cdall(icontxt, desc_a, info,mg=mg,repl=.true.)
+</PRE>
+
+<P>
+This subroutine initializes the communication descriptor associated
+with an index space. Exactly one of the  optional arguments
+<code>parts</code>, <code>vg</code>, <code>vl</code>, <code>nl</code>  or <code>repl</code> 
+must be specified, thereby choosing
+the specific initialization strategy:
+<DL>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context.
+<BR>
+Scope:<B>global</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value.
+</DD>
+<DT><STRONG>vg</STRONG></DT>
+<DD>Data allocation: each index <!-- MATH
+ $i\in \{1\dots mg\}$
+ -->
+<IMG
+ WIDTH="98" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img82.png"
+ ALT="$i\in \{1\dots mg\}$"> is allocated
+  to process <IMG
+ WIDTH="39" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img83.png"
+ ALT="$vg(i)$">.
+Scope:<B>global</B>.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer array. 
+</DD>
+<DT><STRONG>flag</STRONG></DT>
+<DD>Specifies whether entries in <IMG
+ WIDTH="20" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img84.png"
+ ALT="$vg$"> are zero- or one-based.
+Scope:<B>global</B>.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value <IMG
+ WIDTH="27" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img85.png"
+ ALT="$0,1$">, default <IMG
+ WIDTH="11" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img86.png"
+ ALT="$0$">.
+
+<P>
+</DD>
+<DT><STRONG>mg</STRONG></DT>
+<DD>the (global) number of rows of the problem.
+<BR>
+Scope:<B>global</B>.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value. It is required if <code>parts</code> or
+<code>repl</code> is specified. 
+</DD>
+<DT><STRONG>parts</STRONG></DT>
+<DD>the subroutine that defines the partitioning scheme.
+<BR>
+Scope:<B>global</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Specified as: a subroutine. 
+</DD>
+<DT><STRONG>vl</STRONG></DT>
+<DD>Data allocation: the set of global indices belonging to the
+  calling process. 
+Scope:<B>local</B>.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer array. 
+</DD>
+<DT><STRONG>nl</STRONG></DT>
+<DD>Data allocation: in a generalized block-row distribution the
+  number of indices belonging to the current process. 
+Scope:<B>local</B>.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value. 
+</DD>
+<DT><STRONG>repl</STRONG></DT>
+<DD>Data allocation: build a replicated index space (i.e. all
+  processes own all indices).
+Scope:<B>global</B>.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: the logical value <code>.true.</code>
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>Exactly one of the optional arguments  <code>parts</code>, <code>vg</code>,
+  <code>vl</code>, <code>nl</code>  must be specified, thereby choosing the
+  initialization   strategy as follows:
+<DL>
+<DT><STRONG>parts</STRONG></DT>
+<DD>In this case we have a subroutine specifying the mapping
+  between global indices and process/local index pairs. If this
+  optional argument   is specified, then it is mandatory to 
+  specify the argument <code>mg</code> as well.  
+  The subroutine must conform to the following interface: 
+<PRE>
+  interface 
+     subroutine psb_parts(glob_index,mg,np,pv,nv)
+       integer, intent (in)  :: glob_index,np,mg
+       integer, intent (out) :: nv, pv(*)
+     end subroutine psb_parts
+  end interface
+</PRE>
+  The input arguments are:
+  <DL>
+<DT><STRONG>glob_index</STRONG></DT>
+<DD>The global index to be mapped;
+    
+</DD>
+<DT><STRONG>np</STRONG></DT>
+<DD>The number of processes in the mapping;
+    
+</DD>
+<DT><STRONG>mg</STRONG></DT>
+<DD>The total number of global rows in the mapping;
+  
+</DD>
+</DL>
+  The output arguments are:
+  <DL>
+<DT><STRONG>nv</STRONG></DT>
+<DD>The number of entries in <code>pv</code>;
+    
+</DD>
+<DT><STRONG>pv</STRONG></DT>
+<DD>A vector containint the indices of the processes to
+    which the global index should be assigend; each entry must satisfy
+    <!-- MATH
+ $0\le pv(i) < np$
+ -->
+<IMG
+ WIDTH="106" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img87.png"
+ ALT="$0\le pv(i) &lt; np$">; if <IMG
+ WIDTH="51" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img88.png"
+ ALT="$nv&gt;1$"> we have an index assigned to multiple
+    processes, i.e. we have an overlap among the subdomains.
+  
+</DD>
+</DL>
+</DD>
+<DT><STRONG>vg</STRONG></DT>
+<DD>In this case the association between an index and a process
+  is specified via an integer vector; the size of the index space is
+  equal to the size of <code>vg</code>, and each index <IMG
+ WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img3.png"
+ ALT="$i$"> is assigned to
+  the process <IMG
+ WIDTH="39" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img83.png"
+ ALT="$vg(i)$">. The vector <code>vg</code> must be identical on all
+  calling processes; its entries may have the ranges <IMG
+ WIDTH="94" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img89.png"
+ ALT="$(0\dots np-1)$">
+  or <IMG
+ WIDTH="65" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img90.png"
+ ALT="$(1\dots np)$"> according to the value of <code>flag</code>.
+</DD>
+<DT><STRONG>vl</STRONG></DT>
+<DD>In this case we are specifying the list of indices assigned
+  to the current process; thus, the global problem size <IMG
+ WIDTH="27" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img91.png"
+ ALT="$mg$"> is given by
+  the sum of the sizes of the individual vectors <code>vl</code> specified
+  on the calling processes. The subroutine will check that each entry
+  in the global index space <IMG
+ WIDTH="70" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img92.png"
+ ALT="$(1\dots mg)$"> is specified exactly once. 
+</DD>
+<DT><STRONG>nl</STRONG></DT>
+<DD>In this case we are implying a generalized row-block
+  distribution in which each process <IMG
+ WIDTH="13" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img93.png"
+ ALT="$I$"> gets assigned a consecutive
+  chunk of <IMG
+ WIDTH="59" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img94.png"
+ ALT="$N_I=nl$"> global indices.
+</DD>
+<DT><STRONG>repl</STRONG></DT>
+<DD>In this case we are asking to replicate all indices on
+  all processes. This is a special purpose data allocation that is
+  useful in the construction of some multilevel preconditioners.
+</DD>
+</DL>
+</LI>
+<LI>On exit from this routine the descriptor is in the build state
+</LI>
+</OL>
+
+<P>
+<HR>
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
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+<H2><A NAME="SECTION00072000000000000000">
+psb_cdins -- Communication descriptor insert routine</A>
+</H2>
+
+<P>
+<PRE>
+call psb_cdins(nz, ia, ja, desc_a, info)
+</PRE>
+
+<P>
+This subroutine examines the edges of the graph associated with the
+discretization mesh (and isomorphic to the sparsity pattern of a
+linear system coefficient matrix), storing them as necessary into the
+communication descriptor.
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>nz</STRONG></DT>
+<DD>the number of points being inserted.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value.
+</DD>
+<DT><STRONG>ia</STRONG></DT>
+<DD>the indices of the starting vertex of the edges  being inserted.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer array of length <IMG
+ WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img95.png"
+ ALT="$nz$">.
+</DD>
+<DT><STRONG>ja</STRONG></DT>
+<DD>the indices of the end vertex of the edges  being inserted.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer array of length <IMG
+ WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img95.png"
+ ALT="$nz$">.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the updated communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>This routine may only be called if the descriptor is in the
+  build state;
+</LI>
+<LI>This routine automatically ignores edges that do not
+insist on the  current process, i.e. edges for which neither the starting
+nor the end vertex belong to the current process. 
+</LI>
+</OL>
+
+<P>
+<HR>
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diff --git a/docs/html/node45.html b/docs/html/node45.html
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+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<TITLE>psb_cdasb -- Communication descriptor assembly routine</TITLE>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00073000000000000000">
+psb_cdasb -- Communication descriptor assembly routine</A>
+</H2>
+
+<P>
+<PRE>
+call psb_cdasb(desc_a, info)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>On exit from this routine the descriptor is in the assembled
+  state. 
+</LI>
+</OL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node46.html b/docs/html/node46.html
new file mode 100644
index 00000000..88524e07
--- /dev/null
+++ b/docs/html/node46.html
@@ -0,0 +1,123 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_cdcpy -- Copies a communication descriptor</TITLE>
+<META NAME="description" CONTENT="psb_cdcpy -- Copies a communication descriptor">
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+  HREF="node45.html">psb_cdasb   Communication</A>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00074000000000000000">
+psb_cdcpy -- Copies a communication descriptor</A>
+</H2>
+
+<P>
+<PRE>
+call psb_cdcpy(desc_in, desc_out, info)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc_in</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+
+<P>
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc_out</STRONG></DT>
+<DD>the communication descriptor copy.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node47.html b/docs/html/node47.html
new file mode 100644
index 00000000..dc24d737
--- /dev/null
+++ b/docs/html/node47.html
@@ -0,0 +1,110 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_cdfree -- Frees a communication descriptor</TITLE>
+<META NAME="description" CONTENT="psb_cdfree -- Frees a communication descriptor">
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+  HREF="node48.html">psb_cdbldext   Build</A>
+<B> Up:</B> <A NAME="tex2html773"
+  HREF="node42.html">Data management routines</A>
+<B> Previous:</B> <A NAME="tex2html767"
+  HREF="node46.html">psb_cdcpy   Copies</A>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00075000000000000000">
+psb_cdfree -- Frees a communication descriptor</A>
+</H2>
+
+<P>
+<PRE>
+call psb_cdfree(desc_a, info)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the communication descriptor to be freed.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node48.html b/docs/html/node48.html
new file mode 100644
index 00000000..eb264907
--- /dev/null
+++ b/docs/html/node48.html
@@ -0,0 +1,208 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_cdbldext -- Build an extended communication descriptor</TITLE>
+<META NAME="description" CONTENT="psb_cdbldext -- Build an extended communication descriptor">
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+<BR>
+<B> Next:</B> <A NAME="tex2html789"
+  HREF="node49.html">psb_spall   Allocates</A>
+<B> Up:</B> <A NAME="tex2html785"
+  HREF="node42.html">Data management routines</A>
+<B> Previous:</B> <A NAME="tex2html779"
+  HREF="node47.html">psb_cdfree   Frees</A>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00076000000000000000">
+psb_cdbldext -- Build an extended  communication
+  descriptor</A>
+</H2>
+
+<P>
+<PRE>
+call psb_cdbldext(a,desc_a,nl,desc_out, info, extype)
+</PRE>
+
+<P>
+This subroutine builds an extended communication descriptor, based on
+the input descriptor <code>desc_a</code> and on the stencil specified
+through the input sparse matrix <code>a</code>. 
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>A sparse matrix
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data type.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>nl</STRONG></DT>
+<DD>the number of additional layers desired.
+<BR>
+Scope:<B>global</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value <IMG
+ WIDTH="47" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img96.png"
+ ALT="$nl\ge 0$">. 
+</DD>
+<DT><STRONG>extype</STRONG></DT>
+<DD>the kind of estension required.
+<BR>
+Scope:<B>global</B>.
+<BR>
+Type:<B>optional </B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value
+<code>psb_ovt_xhal_</code>, <code>psb_ovt_asov_</code>, default: <code>psb_ovt_xhal_</code>
+
+<P>
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc_out</STRONG></DT>
+<DD>the extended communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>Specifying <code>psb_ovt_xhal_</code> for the <code>extype</code> argument
+  the user will obtain a descriptor for a domain partition in which
+  the additional layers are fetched as part of an (extended) halo;
+  however the index-to-process mapping is identical to that of the
+  base descriptor;
+</LI>
+<LI>Specifying <code>psb_ovt_asov_</code> for the <code>extype</code> argument
+  the user will obtain a descriptor with an overlapped decomposition:
+  the additional layer is aggregated to  the local subdomain (and thus
+  is an overlap), and a new halo extending beyond the last additional
+  layer is formed. 
+</LI>
+</OL>
+
+<P>
+<HR>
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+original version by:  Nikos Drakos, CBLU, University of Leeds
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+<H2><A NAME="SECTION00077000000000000000">
+psb_spall -- Allocates a sparse matrix</A>
+</H2>
+
+<P>
+<PRE>
+call psb_spall(a, desc_a, info, nnz)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>nnz</STRONG></DT>
+<DD>An estimate of the number of nonzeroes in the local
+  part of the assembled matrix.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value. 
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the matrix to be allocated.
+<BR>
+Scope:<B>local</B>
+<BR>
+Type:<B>required</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>On exit from this routine the sparse matrix  is in the build
+  state.
+</LI>
+<LI>The descriptor may be in either the build or assembled state.
+</LI>
+<LI>Providing a good estimate for the number of nonzeroes <IMG
+ WIDTH="32" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img97.png"
+ ALT="$nnz$"> in
+  the assembled matrix may substantially improve performance in the
+  matrix build phase, as it will reduce or eliminate the need for
+  (potentially multiple) data reallocations. 
+</LI>
+</OL>
+
+<P>
+<HR>
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+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<H2><A NAME="SECTION00032000000000000000">
+Library contents</A>
+</H2>
+
+<P>
+The PSBLAS library consists of various classes of subroutines:
+<DL>
+<DT><STRONG>Computational routines</STRONG></DT>
+<DD>comprising:
+
+<UL>
+<LI>Sparse matrix by dense matrix product; 
+</LI>
+<LI>Sparse triangular
+systems solution for block diagonal matrices;
+</LI>
+<LI>Vector and matrix norms;
+</LI>
+<LI>Dense matrix sums;
+</LI>
+<LI>Dot products.
+</LI>
+</UL> 
+</DD>
+<DT><STRONG>Communication routines</STRONG></DT>
+<DD>handling halo and overlap
+  communications;
+</DD>
+<DT><STRONG>Data management and auxiliary routines</STRONG></DT>
+<DD>including:
+
+<UL>
+<LI>Parallel environment management
+</LI>
+<LI>Communication descriptors allocation;
+</LI>
+<LI>Dense and sparse matrix allocation;
+</LI>
+<LI>Dense and sparse matrix build and update;
+</LI>
+<LI>Sparse matrix and data distribution preprocessing.
+</LI>
+</UL> 
+</DD>
+<DT><STRONG>Preconditioner routines</STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Iterative methods</STRONG></DT>
+<DD>a subset of Krylov subspace iterative
+  methods
+</DD>
+</DL>
+The following naming scheme has been adopted for all the symbols
+internally defined in the PSBLAS software package:
+
+<UL>
+<LI>all the symbols (i.e. subroutine names, data types...) are
+  prefixed by <code>psb_</code> 
+</LI>
+<LI>all the data type names are suffixed by <code>_type</code>
+</LI>
+<LI>all the constant values are suffixed by <code>_</code>
+</LI>
+<LI>all the subroutine names follow the rule <code>psb_xxname</code> where
+  <code>xx</code> can be either:
+  
+<UL>
+<LI><code>ge</code>: the routine is related to dense data, 
+</LI>
+<LI><code>sp</code>: the routine is related to sparse data, 
+</LI>
+<LI><code>cd</code>: the routine is related to communication descriptor
+        (see&nbsp;<A HREF="node8.html#sec:datastruct">3</A>).
+  
+</LI>
+</UL>
+  For example the <code>psb_geins</code>, <code>psb_spins</code> and
+  <code>psb_cdins</code> perform the same action (see&nbsp;<A HREF="node42.html#sec:toolsrout">6</A>) on
+  dense matrices, sparse matrices and communication descriptors
+  respectively.
+  Interface overloading allows the usage of the same subroutine
+  interfaces for both real and complex data.
+</LI>
+</UL>
+In the description of the subroutines, arguments or argument entries
+are classified as:
+<DL>
+<DT><STRONG>global</STRONG></DT>
+<DD>For input arguments, the value must be the same on all processes
+  participating in the subroutine call; for output arguments the value
+  is guaranteed to be the same.
+</DD>
+<DT><STRONG>local</STRONG></DT>
+<DD>Each process has its own value(s) independently.
+</DD>
+</DL>
+
+<P>
+<HR>
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_spins -- Insert a cloud of elements into a sparse matrix</TITLE>
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+<H2><A NAME="SECTION00078000000000000000">
+psb_spins -- Insert a cloud of elements into a sparse
+  matrix</A>
+</H2>
+
+<P>
+<PRE>
+call psb_spins(nz, ia, ja, val, a, desc_a, info)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>nz</STRONG></DT>
+<DD>the number of elements to be inserted.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer scalar.
+</DD>
+<DT><STRONG>ia</STRONG></DT>
+<DD>the row indices of the elements to be inserted.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer array of size <IMG
+ WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img95.png"
+ ALT="$nz$">.
+</DD>
+<DT><STRONG>ja</STRONG></DT>
+<DD>the column indices of the elements to be inserted.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer array of size <IMG
+ WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img95.png"
+ ALT="$nz$">.
+</DD>
+<DT><STRONG>val</STRONG></DT>
+<DD>the elements to be inserted.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an array of size <IMG
+ WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img95.png"
+ ALT="$nz$">. Must be of the same type and kind
+of the <code>aspk</code> component of the sparse matrix <IMG
+ WIDTH="12" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img98.png"
+ ALT="$a$">.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>The communication descriptor.
+<BR>
+Scope: <B>local</B>. 
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a variable of type descdata<TT>psb_desc_type</TT>.
+<BR></DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the matrix into which elements will be inserted.
+<BR>
+Scope:<B>local</B>
+<BR>
+Type:<B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>The communication descriptor.
+<BR>
+Scope: <B>local</B>. 
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a variable of type descdata<TT>psb_desc_type</TT>.
+<BR></DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>On entry to this routine the descriptor may be in either the
+  build or assembled state.
+</LI>
+<LI>On entry to this routine the sparse matrix may be in either the
+  build or update state. 
+</LI>
+<LI>If the descriptor is in the build state, then the sparse matrix
+  must also be in the build state; the action of the routine is to
+  (implicitly) call <code>psb_cdins</code> to add entries to the sparsity
+  pattern; each sparse matrix entry implicitly defines a graph edge,
+  that is passed to the descriptor routine for the appropriate
+  processing. 
+</LI>
+<LI>Any coefficients from matrix rows not assigned to the calling
+  process are silently ignored;
+</LI>
+<LI>If the descriptor is in the assembled state, then any entries in
+  the sparse matrix that would generate additional communication
+  requirements will be ignored; 
+</LI>
+<LI>If the matrix is in the update state, any entries in positions
+  that were not present in the original matrix will be ignored. 
+</LI>
+</OL>
+
+<P>
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<TITLE>psb_spasb -- Sparse matrix assembly routine</TITLE>
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+
+<H2><A NAME="SECTION00079000000000000000">
+psb_spasb -- Sparse matrix assembly routine</A>
+</H2>
+
+<P>
+<PRE>
+call psb_spasb(a, desc_a, info, afmt, upd, dupl)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>afmt</STRONG></DT>
+<DD>the storage format for the sparse matrix.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an array of characters. Defalt:  'CSR'.
+</DD>
+<DT><STRONG>upd</STRONG></DT>
+<DD>Provide for updates to the matrix coefficients.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: integer, possible values: <code>psb_upd_srch_</code>, <code>psb_upd_perm_</code>
+</DD>
+<DT><STRONG>dupl</STRONG></DT>
+<DD>How to handle duplicate coefficients.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: integer, possible values: <code>psb_dupl_ovwrt_</code>,
+<code>psb_dupl_add_</code>, <code>psb_dupl_err_</code>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the matrix to be assembled.
+<BR>
+Scope:<B>local</B>
+<BR>
+Type:<B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>On entry to this routine the descriptor must  be in  the
+  assembled state, i.e. <code>psb_cdasb</code> must already have been called.
+</LI>
+<LI>The sparse matrix may be in either the build or update state;
+</LI>
+<LI>Duplicate entries are detected and handled in both build and
+  update state, with the exception of the error action that is only
+  taken in the build state, i.e. on the first assembly; 
+</LI>
+<LI>If the update choice is <code>psb_upd_perm_</code>, then subsequent
+  calls to <code>psb_spins</code> to update the matrix must be arranged in
+  such a way as to produce exactly the same sequence of coefficient
+  values as encountered at the first assembly; 
+</LI>
+<LI>On exit from this routine the matrix is in the assembled state,
+  and thus is suitable for the computational routines. 
+</LI>
+</OL>
+
+<P>
+<HR>
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diff --git a/docs/html/node52.html b/docs/html/node52.html
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+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_spfree -- Frees a sparse matrix</TITLE>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000710000000000000000">
+psb_spfree -- Frees a sparse matrix</A>
+</H2>
+
+<P>
+<PRE>
+call psb_spfree(a, desc_a, info)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the matrix to be freed.
+<BR>
+Scope:<B>local</B>
+<BR>
+Type:<B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node53.html b/docs/html/node53.html
new file mode 100644
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_sprn -- Reinit sparse matrix structure for psblas routines.</TITLE>
+<META NAME="description" CONTENT="psb_sprn -- Reinit sparse matrix structure for psblas routines.">
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+<H2><A NAME="SECTION000711000000000000000">
+psb_sprn -- Reinit sparse matrix structure for psblas
+  routines.</A>
+</H2>
+
+<P>
+<PRE>
+call psb_sprn(a, decsc_a, info, clear)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the matrix to be reinitialized.
+<BR>
+Scope:<B>local</B>
+<BR>
+Type:<B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>clear</STRONG></DT>
+<DD>Choose whether to zero out matrix coefficients
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Default: true.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>On exit from this routine the sparse matrix is in the update
+  state. 
+</LI>
+</OL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node54.html b/docs/html/node54.html
new file mode 100644
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_geall -- Allocates a dense matrix</TITLE>
+<META NAME="description" CONTENT="psb_geall -- Allocates a dense matrix">
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+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000712000000000000000">
+psb_geall -- Allocates a dense matrix</A>
+</H2>
+
+<P>
+<PRE>
+call psb_geall(x, desc_a, info, n, lb)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>The communication descriptor.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a variable of type descdata<TT>psb_desc_type</TT>.
+<BR></DD>
+<DT><STRONG>n</STRONG></DT>
+<DD>The number of columns of the dense matrix to be allocated.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: Integer scalar, default <IMG
+ WIDTH="12" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img99.png"
+ ALT="$1$">. It is not a valid argument  if <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is a
+rank-1 array. 
+</DD>
+<DT><STRONG>lb</STRONG></DT>
+<DD>The lower bound for the column index range of the dense matrix to be allocated.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: Integer scalar, default <IMG
+ WIDTH="12" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img99.png"
+ ALT="$1$">. It is not a valid argument if <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is a
+rank-1 array. 
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>The dense matrix to be allocated.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: a rank one or two array with the ALLOCATABLE
+attribute, of type real, complex or integer.
+<BR></DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node55.html b/docs/html/node55.html
new file mode 100644
index 00000000..21452a6a
--- /dev/null
+++ b/docs/html/node55.html
@@ -0,0 +1,219 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_geins -- Dense matrix insertion routine</TITLE>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000713000000000000000">
+psb_geins -- Dense matrix insertion routine</A>
+</H2>
+
+<P>
+<PRE>
+call psb_geins(m, irw, val, x, desc_a, info,dupl)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>m</STRONG></DT>
+<DD>Number of rows in <IMG
+ WIDTH="25" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img100.png"
+ ALT="$val$"> to be inserted.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value.
+</DD>
+<DT><STRONG>irw</STRONG></DT>
+<DD>Indices of the rows to be inserted. Specifically, row <IMG
+ WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img3.png"
+ ALT="$i$">
+  of <IMG
+ WIDTH="25" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img100.png"
+ ALT="$val$"> will be inserted into the local row corresponding to the
+  global row index <IMG
+ WIDTH="47" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img101.png"
+ ALT="$irw(i)$">.
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer array.
+</DD>
+<DT><STRONG>val</STRONG></DT>
+<DD>the dense submatrix to be inserted.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a rank 1 or 2  array.
+Specified as: an integer value.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>dupl</STRONG></DT>
+<DD>How to handle duplicate coefficients.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: integer, possible values: <code>psb_dupl_ovwrt_</code>,
+<code>psb_dupl_add_</code>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>the output dense matrix.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a rank one or two array with the ALLOCATABLE
+attribute, of type real, complex or integer.
+<BR></DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>Dense vectors/matrices do not have an associated state;
+</LI>
+<LI>Duplicate entries are either overwritten or added, there is no
+  provision for raising an error condition. 
+</LI>
+</OL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
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diff --git a/docs/html/node56.html b/docs/html/node56.html
new file mode 100644
index 00000000..7dcbad13
--- /dev/null
+++ b/docs/html/node56.html
@@ -0,0 +1,120 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_geasb -- Assembly a dense matrix</TITLE>
+<META NAME="description" CONTENT="psb_geasb -- Assembly a dense matrix">
+<META NAME="keywords" CONTENT="userhtml">
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+  HREF="node55.html">psb_geins   Dense</A>
+ &nbsp; <B>  <A NAME="tex2html883"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000714000000000000000">
+psb_geasb -- Assembly a dense matrix</A>
+</H2>
+
+<P>
+<PRE>
+call psb_geasb(x, desc_a, info)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>The communication descriptor.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a variable of type descdata<TT>psb_desc_type</TT>.
+<BR></DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>The dense matrix to be assembled.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a rank one or two array with the ALLOCATABLE
+attribute, of type real, complex or integer.
+<BR></DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node57.html b/docs/html/node57.html
new file mode 100644
index 00000000..3efa7b4f
--- /dev/null
+++ b/docs/html/node57.html
@@ -0,0 +1,125 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_gefree -- Frees a dense matrix</TITLE>
+<META NAME="description" CONTENT="psb_gefree -- Frees a dense matrix">
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+<B> Next:</B> <A NAME="tex2html897"
+  HREF="node58.html">psb_gelp   Applies</A>
+<B> Up:</B> <A NAME="tex2html893"
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+<B> Previous:</B> <A NAME="tex2html887"
+  HREF="node56.html">psb_geasb   Assembly</A>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000715000000000000000">
+psb_gefree -- Frees a dense matrix</A>
+</H2>
+
+<P>
+<PRE>
+call psb_gefree(x, desc_a, info)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>The dense matrix to
+  be freed.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a rank one or two array with the ALLOCATABLE
+attribute, of type real, complex or integer.
+<BR>
+<P>
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>The communication descriptor.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a variable of type descdata<TT>psb_desc_type</TT>.
+<BR></DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node58.html b/docs/html/node58.html
new file mode 100644
index 00000000..75d1237b
--- /dev/null
+++ b/docs/html/node58.html
@@ -0,0 +1,145 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_gelp -- Applies a left permutation to a dense matrix</TITLE>
+<META NAME="description" CONTENT="psb_gelp -- Applies a left permutation to a dense matrix">
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+  HREF="node59.html">psb_glob_to_loc   Global</A>
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+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000716000000000000000">
+psb_gelp -- Applies a left permutation to a dense
+  matrix</A>
+</H2>
+
+<P>
+<PRE>
+call psb_gelp(trans, iperm, x, info)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>trans</STRONG></DT>
+<DD>A character that specifies whether to permute <IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$"> or <IMG
+ WIDTH="25" HEIGHT="16" ALIGN="BOTTOM" BORDER="0"
+ SRC="img102.png"
+ ALT="$A^T$">.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a single character with value 'N' for <IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$"> or 'T' for <IMG
+ WIDTH="25" HEIGHT="16" ALIGN="BOTTOM" BORDER="0"
+ SRC="img102.png"
+ ALT="$A^T$">.
+<BR></DD>
+<DT><STRONG>iperm</STRONG></DT>
+<DD>An integer array containing permutation information.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer one-dimensional array.
+<BR></DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>The dense matrix to be permuted.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a one or two dimensional array.
+<BR></DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node59.html b/docs/html/node59.html
new file mode 100644
index 00000000..15441a9d
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
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+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000717000000000000000">
+psb_glob_to_loc -- Global to local indices
+  convertion</A>
+</H2>
+
+<P>
+<PRE>
+call psb_glob_to_loc(x, y, desc_a, info, iact,owned)
+call psb_glob_to_loc(x, desc_a, info, iact,owned)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>An integer vector of indices to be converted.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in, inout</B>.
+<BR>
+Specified as: a rank one integer array.
+<BR></DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>iact</STRONG></DT>
+<DD>specifies action to be taken in case of range errors. 
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a character variable  <code>I</code>gnore, <code>W</code>arning or
+<code>A</code>bort, default <code>I</code>gnore.
+</DD>
+<DT><STRONG>owned</STRONG></DT>
+<DD>Specfies valid range of input 
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+If true, then only indices strictly owned by the current process are
+considered valid, if false then halo indices are also
+accepted. Default: false. 
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>If <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"> is not present,
+  then <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is overwritten with the translated integer indices. 
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a rank one integer array.
+</DD>
+<DT><STRONG>y</STRONG></DT>
+<DD>If <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"> is  present,
+  then <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"> is overwritten with the translated integer indices, and <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">
+  is left unchanged. 
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: a rank one integer array.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>If an input index is out of range, then the corresponding output
+  index is set to a negative number;
+</LI>
+<LI>The default <code>I</code>gnore means that the negative output is the
+  only action taken on an out-of-range input.
+</LI>
+</OL>
+
+<P>
+<HR>
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>Application structure</TITLE>
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+<H2><A NAME="SECTION00033000000000000000">
+Application structure</A>
+</H2>
+
+<P>
+The main underlying principle of the PSBLAS library is that the
+library objects are created and exist with reference to a discretized
+space to which there corresponds an index space and a matrix sparsity
+pattern. As an example, consider a cell-centered finite-volume
+discretization of  the Navier-Stokes equations on a simulation domain;
+the index space <IMG
+ WIDTH="45" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img12.png"
+ ALT="$1\dots n$"> is isomorphic to the set of cell centers,
+whereas the pattern of the associated linear system matrix is
+isomorphic to the adjacency graph imposed on the discretization mesh
+by the discretization stencil. 
+
+<P>
+Thus the first order of business is to establish an index space, and
+this is done with a call to  <code>psb_cdall</code> in which we specify the
+size of the index space <IMG
+ WIDTH="14" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img13.png"
+ ALT="$n$"> and the allocation of the elements of the
+index space to the various processes making up the MPI (virtual)
+parallel machine. 
+
+<P>
+The index space is partitioned among processes, and this creates a
+mapping from the ``global'' numbering <IMG
+ WIDTH="45" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img12.png"
+ ALT="$1\dots n$"> to a numbering
+``local'' to each process; each process <IMG
+ WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img3.png"
+ ALT="$i$"> will own a certain subset
+<!-- MATH
+ $1\dots n_{\hbox{row}_i}$
+ -->
+<IMG
+ WIDTH="76" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img14.png"
+ ALT="$1\dots n_{\hbox{row}_i}$">, each element of which corresponds to a certain
+element of <IMG
+ WIDTH="45" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img12.png"
+ ALT="$1\dots n$">. The user does not set explicitly this mapping;
+when the application needs to indicate to which element of the index
+space a certain item is related, such as the row and column index of a
+matrix coefficient, it does so in the ``global'' numbering, and the
+library will translate into the appropriate ``local'' numbering. 
+
+<P>
+For  a given index space <IMG
+ WIDTH="45" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img12.png"
+ ALT="$1\dots n$"> there are many possible associated
+topologies, i.e. many different discretization stencils; thus the
+description of the index space is not completed until the user has
+defined a sparsity pattern, either explicitly through <code>psb_cdins</code>
+or implicitly through <code>psb_spins</code>. The descriptor is finalized
+with a call to <code>psb_cdasb</code> and a sparse matrix with a call to
+<code>psb_spasb</code>. After <code>psb_cdasb</code> each process <IMG
+ WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img3.png"
+ ALT="$i$"> will have
+defined a set of ``halo'' (or ``ghost'') indices
+<!-- MATH
+ $n_{\hbox{row}_i}+1\dots n_{\hbox{col}_i}$
+ -->
+<IMG
+ WIDTH="131" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img15.png"
+ ALT="$n_{\hbox{row}_i}+1\dots n_{\hbox{col}_i}$">, denoting elements of the index
+space that are <I>not</I> assigned to process <IMG
+ WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img3.png"
+ ALT="$i$">; however the
+variables associated with them are needed to complete computations
+associated with the sparse matrix <IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">, and thus they have to be
+fetched from (neighbouring) processes. The descriptor of the index
+space is built exactly for the purpose of properly sequencing the
+communication steps required to achieve this objective. 
+
+<P>
+A simple application structure will walk through the index space
+allocation, matrix/vector creation and linear system solution as
+follows:
+
+<OL>
+<LI>Initialize parallel environment with <code>psb_init</code>
+</LI>
+<LI>Initialize index space with <code>psb_cdall</code>
+</LI>
+<LI>Allocate sparse matrix and dense vectors with <code>psb_spall</code>
+  and <code>psb_geall</code>
+</LI>
+<LI>Loop over all local rows, generate matrix and vector entries,
+  and insert them with <code>psb_spins</code> and <code>psb_geins</code>
+</LI>
+<LI>Assemble the various entities: 
+
+<OL>
+<LI><code>psb_cdasb</code>
+</LI>
+<LI><code>psb_spasb</code>
+</LI>
+<LI><code>psb_geasb</code>
+</LI>
+</OL>
+</LI>
+<LI>Choose the preconditioner to be used with <code>psb_precset</code> and
+  build it with <code>psb_precbld</code>
+</LI>
+<LI>Call the iterative method of choice, e.g. <code>psb_bicgstab</code>
+</LI>
+</OL>
+This is the structure of the sample program
+<code>test/pargen/ppde90.f90</code>. 
+
+<P>
+For a simulation in which the same discretization mesh is used over
+multiple time steps, the following structure may be more appropriate:
+
+<OL>
+<LI>Initialize parallel environment with <code>psb_init</code>
+</LI>
+<LI>Initialize index space with <code>psb_cdall</code>
+</LI>
+<LI>Loop over the topology of the discretization mesh and build the
+  descriptor with <code>psb_cdins</code>
+</LI>
+<LI>Assemble the descriptor with <code>psb_cdasb</code>
+</LI>
+<LI>Allocate the sparse matrices and dense vectors with
+  <code>psb_spall</code> and <code>psb_geall</code>
+</LI>
+<LI>Loop over the time steps: 
+
+<OL>
+<LI>If after first time step, 
+  reinitialize the sparse matrix with <code>psb_sprn</code>; also zero out
+  the dense vectors;
+</LI>
+<LI>Loop over the mesh, generate the coefficients and insert/update
+  them with <code>psb_spins</code> and <code>psb_geins</code>
+</LI>
+<LI>Assemble with <code>psb_spasb</code> and <code>psb_geasb</code>
+</LI>
+<LI>Choose and build preconditioner with <code>psb_precset</code> and
+  <code>psb_precbld</code>
+</LI>
+<LI>Call the iterative method of choice, e.g. <code>psb_bicgstab</code>
+ 
+</LI>
+</OL>
+</LI>
+</OL>
+The insertion routines will be called as many times as needed; 
+they only need to  be called on the data that is actually
+allocated to the current process, i.e. each process generates its own
+data. 
+
+<P>
+In principle there is no specific order in the calls to
+<code>psb_spins</code>, nor is there a requirement to build a matrix row in
+its entirety before calling the routine; this allows the application
+programmer to walk through the discretization mesh element by element,
+generating the main part of a given matrix row but also contributions
+to the rows corresponding to neighbouring elements. 
+
+<P>
+From a functional point of view it is even possible to execute one
+call for each nonzero coefficient; however this would have a
+substantial computational overhead. It is therefore advisable to pack
+a certain amount of data into each call to the insertion routine, say
+touching on a few tens of rows; the best performng value would depend
+on both the architecture of the computer being used and on the problem
+structure. 
+At the opposite extreme, it would be possible to generate the entire
+part of a coefficient matrix residing on a process and pass it in a
+single call to <code>psb_spins</code>; this, however, would entail a
+doubling of memory occupation, and thus would be almost always far
+from optimal. 
+
+<P>
+<HR>
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+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+  HREF="node59.html">
+<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous"
+ SRC="file:/usr/share/latex2html/icons/prev.png"></A> 
+<A NAME="tex2html930"
+  HREF="node1.html">
+<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents"
+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html933"
+  HREF="node61.html">psb_is_owned</A>
+<B> Up:</B> <A NAME="tex2html929"
+  HREF="node42.html">Data management routines</A>
+<B> Previous:</B> <A NAME="tex2html923"
+  HREF="node59.html">psb_glob_to_loc   Global</A>
+ &nbsp; <B>  <A NAME="tex2html931"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000718000000000000000">
+psb_loc_to_glob -- Local to global indices
+  conversion</A>
+</H2>
+
+<P>
+<PRE>
+call psb_loc_to_glob(x, y, desc_a, info, iact)
+call psb_loc_to_glob(x, desc_a, info, iact)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>An integer vector of indices to be converted.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in, inout</B>.
+<BR>
+Specified as: a rank one integer array.
+<BR></DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>iact</STRONG></DT>
+<DD>specifies action to be taken in case of range errors. 
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a character variable  <code>I</code>gnore, <code>W</code>arning or
+<code>A</code>bort, default <code>I</code>gnore.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>If <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"> is not present,
+  then <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is overwritten with the translated integer indices. 
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a rank one integer array.
+</DD>
+<DT><STRONG>y</STRONG></DT>
+<DD>If <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"> is not present,
+  then <IMG
+ WIDTH="13" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img25.png"
+ ALT="$y$"> is overwritten with the translated integer indices, and <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">
+  is left unchanged. 
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: a rank one integer array.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
+<A NAME="tex2html932"
+  HREF="node61.html">
+<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
+ SRC="file:/usr/share/latex2html/icons/next.png"></A> 
+<A NAME="tex2html928"
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+ SRC="file:/usr/share/latex2html/icons/prev.png"></A> 
+<A NAME="tex2html930"
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+<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents"
+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html933"
+  HREF="node61.html">psb_is_owned</A>
+<B> Up:</B> <A NAME="tex2html929"
+  HREF="node42.html">Data management routines</A>
+<B> Previous:</B> <A NAME="tex2html923"
+  HREF="node59.html">psb_glob_to_loc   Global</A>
+ &nbsp; <B>  <A NAME="tex2html931"
+  HREF="node1.html">Contents</A></B> 
+<!--End of Navigation Panel-->
+
+</BODY>
+</HTML>
diff --git a/docs/html/node61.html b/docs/html/node61.html
new file mode 100644
index 00000000..f132e1c6
--- /dev/null
+++ b/docs/html/node61.html
@@ -0,0 +1,132 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_is_owned </TITLE>
+<META NAME="description" CONTENT="psb_is_owned ">
+<META NAME="keywords" CONTENT="userhtml">
+<META NAME="resource-type" CONTENT="document">
+<META NAME="distribution" CONTENT="global">
+
+<META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1">
+<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
+
+<LINK REL="STYLESHEET" HREF="userhtml.css">
+
+<LINK REL="next" HREF="node62.html">
+<LINK REL="previous" HREF="node60.html">
+<LINK REL="up" HREF="node42.html">
+<LINK REL="next" HREF="node62.html">
+</HEAD>
+
+<BODY >
+<!--Navigation Panel-->
+<A NAME="tex2html944"
+  HREF="node62.html">
+<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
+ SRC="file:/usr/share/latex2html/icons/next.png"></A> 
+<A NAME="tex2html940"
+  HREF="node42.html">
+<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up"
+ SRC="file:/usr/share/latex2html/icons/up.png"></A> 
+<A NAME="tex2html934"
+  HREF="node60.html">
+<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous"
+ SRC="file:/usr/share/latex2html/icons/prev.png"></A> 
+<A NAME="tex2html942"
+  HREF="node1.html">
+<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents"
+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html945"
+  HREF="node62.html">psb_owned_index</A>
+<B> Up:</B> <A NAME="tex2html941"
+  HREF="node42.html">Data management routines</A>
+<B> Previous:</B> <A NAME="tex2html935"
+  HREF="node60.html">psb_loc_to_glob   Local</A>
+ &nbsp; <B>  <A NAME="tex2html943"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000719000000000000000">
+psb_is_owned </A>
+</H2>
+
+<P>
+<PRE>
+call psb_is_owned(x, desc_a)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>Integer index.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a scalar integer.
+<BR></DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>A logical mask which is true if 
+  <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is  owned by the current process
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>out</B>.
+<BR></DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>This routine returns a <code>.true.</code> value for an index
+  that is strictly owned by the current process, excluding the halo
+  indices
+</LI>
+</OL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node62.html b/docs/html/node62.html
new file mode 100644
index 00000000..95bfac79
--- /dev/null
+++ b/docs/html/node62.html
@@ -0,0 +1,156 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_owned_index </TITLE>
+<META NAME="description" CONTENT="psb_owned_index ">
+<META NAME="keywords" CONTENT="userhtml">
+<META NAME="resource-type" CONTENT="document">
+<META NAME="distribution" CONTENT="global">
+
+<META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1">
+<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
+
+<LINK REL="STYLESHEET" HREF="userhtml.css">
+
+<LINK REL="next" HREF="node63.html">
+<LINK REL="previous" HREF="node61.html">
+<LINK REL="up" HREF="node42.html">
+<LINK REL="next" HREF="node63.html">
+</HEAD>
+
+<BODY >
+<!--Navigation Panel-->
+<A NAME="tex2html956"
+  HREF="node63.html">
+<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
+ SRC="file:/usr/share/latex2html/icons/next.png"></A> 
+<A NAME="tex2html952"
+  HREF="node42.html">
+<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up"
+ SRC="file:/usr/share/latex2html/icons/up.png"></A> 
+<A NAME="tex2html946"
+  HREF="node61.html">
+<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous"
+ SRC="file:/usr/share/latex2html/icons/prev.png"></A> 
+<A NAME="tex2html954"
+  HREF="node1.html">
+<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents"
+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html957"
+  HREF="node63.html">psb_is_local</A>
+<B> Up:</B> <A NAME="tex2html953"
+  HREF="node42.html">Data management routines</A>
+<B> Previous:</B> <A NAME="tex2html947"
+  HREF="node61.html">psb_is_owned</A>
+ &nbsp; <B>  <A NAME="tex2html955"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000720000000000000000">
+psb_owned_index </A>
+</H2>
+
+<P>
+<PRE>
+call psb_owned_index(y, x, desc_a, info)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>Integer indices.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in, inout</B>.
+<BR>
+Specified as: a scalar or a rank one integer array.
+<BR></DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>iact</STRONG></DT>
+<DD>specifies action to be taken in case of range errors. 
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a character variable  <code>I</code>gnore, <code>W</code>arning or
+<code>A</code>bort, default <code>I</code>gnore.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>y</STRONG></DT>
+<DD>A logical mask which is true for all corresponding entries of
+  <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> that are owned by the current process
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: a scalar or rank one logical array.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>This routine returns a <code>.true.</code> value for those indices
+  that are strictly owned by the current process, excluding the halo
+  indices
+</LI>
+</OL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node63.html b/docs/html/node63.html
new file mode 100644
index 00000000..cf184c26
--- /dev/null
+++ b/docs/html/node63.html
@@ -0,0 +1,132 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_is_local </TITLE>
+<META NAME="description" CONTENT="psb_is_local ">
+<META NAME="keywords" CONTENT="userhtml">
+<META NAME="resource-type" CONTENT="document">
+<META NAME="distribution" CONTENT="global">
+
+<META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1">
+<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
+
+<LINK REL="STYLESHEET" HREF="userhtml.css">
+
+<LINK REL="next" HREF="node64.html">
+<LINK REL="previous" HREF="node62.html">
+<LINK REL="up" HREF="node42.html">
+<LINK REL="next" HREF="node64.html">
+</HEAD>
+
+<BODY >
+<!--Navigation Panel-->
+<A NAME="tex2html968"
+  HREF="node64.html">
+<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
+ SRC="file:/usr/share/latex2html/icons/next.png"></A> 
+<A NAME="tex2html964"
+  HREF="node42.html">
+<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up"
+ SRC="file:/usr/share/latex2html/icons/up.png"></A> 
+<A NAME="tex2html958"
+  HREF="node62.html">
+<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous"
+ SRC="file:/usr/share/latex2html/icons/prev.png"></A> 
+<A NAME="tex2html966"
+  HREF="node1.html">
+<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents"
+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html969"
+  HREF="node64.html">psb_local_index</A>
+<B> Up:</B> <A NAME="tex2html965"
+  HREF="node42.html">Data management routines</A>
+<B> Previous:</B> <A NAME="tex2html959"
+  HREF="node62.html">psb_owned_index</A>
+ &nbsp; <B>  <A NAME="tex2html967"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000721000000000000000">
+psb_is_local </A>
+</H2>
+
+<P>
+<PRE>
+call psb_is_local(x, desc_a)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>Integer index.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a scalar integer.
+<BR></DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>A logical mask which is true if 
+  <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> is  local to the current process
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>out</B>.
+<BR></DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>This routine returns a <code>.true.</code> value for an index
+  that is local to the current process, including the halo
+  indices
+</LI>
+</OL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node64.html b/docs/html/node64.html
new file mode 100644
index 00000000..f1602c57
--- /dev/null
+++ b/docs/html/node64.html
@@ -0,0 +1,156 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_local_index </TITLE>
+<META NAME="description" CONTENT="psb_local_index ">
+<META NAME="keywords" CONTENT="userhtml">
+<META NAME="resource-type" CONTENT="document">
+<META NAME="distribution" CONTENT="global">
+
+<META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1">
+<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
+
+<LINK REL="STYLESHEET" HREF="userhtml.css">
+
+<LINK REL="next" HREF="node65.html">
+<LINK REL="previous" HREF="node63.html">
+<LINK REL="up" HREF="node42.html">
+<LINK REL="next" HREF="node65.html">
+</HEAD>
+
+<BODY >
+<!--Navigation Panel-->
+<A NAME="tex2html980"
+  HREF="node65.html">
+<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
+ SRC="file:/usr/share/latex2html/icons/next.png"></A> 
+<A NAME="tex2html976"
+  HREF="node42.html">
+<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up"
+ SRC="file:/usr/share/latex2html/icons/up.png"></A> 
+<A NAME="tex2html970"
+  HREF="node63.html">
+<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous"
+ SRC="file:/usr/share/latex2html/icons/prev.png"></A> 
+<A NAME="tex2html978"
+  HREF="node1.html">
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+  HREF="node65.html">psb_get_boundary   Extract</A>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000722000000000000000">
+psb_local_index </A>
+</H2>
+
+<P>
+<PRE>
+call psb_local_index(y, x, desc_a, info)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>Integer indices.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in, inout</B>.
+<BR>
+Specified as: a scalar or a rank one integer array.
+<BR></DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>iact</STRONG></DT>
+<DD>specifies action to be taken in case of range errors. 
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a character variable  <code>I</code>gnore, <code>W</code>arning or
+<code>A</code>bort, default <code>I</code>gnore.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>y</STRONG></DT>
+<DD>A logical mask which is true for all corresponding entries of
+  <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> that are local to  the current process
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: a scalar or rank one logical array.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>This routine returns a <code>.true.</code> value for those indices
+  that are local to  the current process, including the halo
+  indices.
+</LI>
+</OL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node65.html b/docs/html/node65.html
new file mode 100644
index 00000000..6af8fb33
--- /dev/null
+++ b/docs/html/node65.html
@@ -0,0 +1,136 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_get_boundary -- Extract list of boundary elements</TITLE>
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+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000723000000000000000">
+psb_get_boundary -- Extract list of boundary elements</A>
+</H2>
+
+<P>
+<PRE>
+call psb_get_boundary(bndel, desc, info)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>bndel</STRONG></DT>
+<DD>The list of boundary elements on the calling process, in
+  local numbering.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: a rank one array with the ALLOCATABLE
+attribute, of type integer.
+<BR></DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>If there are no boundary elements (i.e., if the local part of
+  the connectivity graph is self-contained) the output vector is set
+  to the ``not allocated'' state. 
+</LI>
+<LI>Otherwise the size of <code>bndel</code> will be exactly equal to the
+  number of boundary elements. 
+</LI>
+</OL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node66.html b/docs/html/node66.html
new file mode 100644
index 00000000..aae8df71
--- /dev/null
+++ b/docs/html/node66.html
@@ -0,0 +1,135 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_get_overlap -- Extract list of overlap elements</TITLE>
+<META NAME="description" CONTENT="psb_get_overlap -- Extract list of overlap elements">
+<META NAME="keywords" CONTENT="userhtml">
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+<B> Next:</B> <A NAME="tex2html1005"
+  HREF="node67.html">psb_sp_getrow   Extract</A>
+<B> Up:</B> <A NAME="tex2html1001"
+  HREF="node42.html">Data management routines</A>
+<B> Previous:</B> <A NAME="tex2html995"
+  HREF="node65.html">psb_get_boundary   Extract</A>
+ &nbsp; <B>  <A NAME="tex2html1003"
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000724000000000000000">
+psb_get_overlap -- Extract list of overlap elements</A>
+</H2>
+
+<P>
+<PRE>
+call psb_get_overlap(ovrel, desc, info)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>desc</STRONG></DT>
+<DD>the communication descriptor.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>ovrel</STRONG></DT>
+<DD>The list of overlap elements on the calling process, in
+  local numbering.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: a rank one array with the ALLOCATABLE
+attribute, of type integer.
+<BR></DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>If there are no overlap elements the output vector is set
+  to the ``not allocated'' state.  
+</LI>
+<LI>Otherwise the size of <code>ovrel</code> will be exactly equal to the
+  number of overlap elements. 
+</LI>
+</OL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node67.html b/docs/html/node67.html
new file mode 100644
index 00000000..75aaebd3
--- /dev/null
+++ b/docs/html/node67.html
@@ -0,0 +1,265 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_sp_getrow -- Extract row(s) from a sparse matrix</TITLE>
+<META NAME="description" CONTENT="psb_sp_getrow -- Extract row(s) from a sparse matrix">
+<META NAME="keywords" CONTENT="userhtml">
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+
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+
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+  HREF="node68.html">psb_sizeof   Memory</A>
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+  HREF="node66.html">psb_get_overlap   Extract</A>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000725000000000000000">
+psb_sp_getrow -- Extract row(s) from a sparse matrix</A>
+</H2>
+
+<P>
+<PRE>
+call psb_sp_getrow(row, a, nz, ia, ja, val, info, &amp;
+              &amp; append, nzin, lrw)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>row</STRONG></DT>
+<DD>The (first) row to be extracted.
+<BR>
+Scope:<B>local</B>
+<BR>
+Type:<B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer <IMG
+ WIDTH="29" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img103.png"
+ ALT="$&gt;0$">.
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the matrix from  which to get rows.
+<BR>
+Scope:<B>local</B>
+<BR>
+Type:<B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>append</STRONG></DT>
+<DD>Whether to append or overwrite existing output.
+<BR>
+Scope:<B>local</B>
+<BR>
+Type:<B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a logical value default: false (overwrite).
+</DD>
+<DT><STRONG>nzin</STRONG></DT>
+<DD>Input size to be appended to.
+<BR>
+Scope:<B>local</B>
+<BR>
+Type:<B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer <IMG
+ WIDTH="29" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img103.png"
+ ALT="$&gt;0$">. When append is true, specifies how many
+entries in the output vectors are already filled. 
+</DD>
+<DT><STRONG>lrw</STRONG></DT>
+<DD>The last  row to be extracted.
+<BR>
+Scope:<B>local</B>
+<BR>
+Type:<B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer <IMG
+ WIDTH="29" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img103.png"
+ ALT="$&gt;0$">, default: <IMG
+ WIDTH="31" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img104.png"
+ ALT="$row$">.
+
+<P>
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>nz</STRONG></DT>
+<DD>the number of elements returned by this call.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>out</B>.
+<BR>
+Returned  as: an integer scalar.
+</DD>
+<DT><STRONG>ia</STRONG></DT>
+<DD>the row indices.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an integer array with the <code>ALLOCATABLE</code> attribute.
+</DD>
+<DT><STRONG>ja</STRONG></DT>
+<DD>the column indices of the elements to be inserted.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an integer array with the <code>ALLOCATABLE</code> attribute.
+</DD>
+<DT><STRONG>val</STRONG></DT>
+<DD>the elements to be inserted.
+<BR>
+Scope:<B>local</B>.
+<BR>
+Type:<B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a real  array with the <code>ALLOCATABLE</code> attribute.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Error code.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B> 
+<BR>
+Intent: <B>out</B>.
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>The output <IMG
+ WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img95.png"
+ ALT="$nz$"> is always the size of the output generated by
+  the current call; thus, if <code>append=.true.</code>, the total output
+  size will be <IMG
+ WIDTH="74" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
+ SRC="img105.png"
+ ALT="$nzin+nz$">, with the newly extracted coefficients stored in
+  entries <code>nzin+1:nzin+nz</code> of the array arguments;
+</LI>
+<LI>When <code>append=.true.</code>  the output arrays are reallocated as
+  necessary;
+</LI>
+<LI>The row and column indices are returned in the local numbering
+  scheme; if the global numbering is desired, the user may employ the
+  <code>psb_loc_to_glob</code> routine on the output.
+</LI>
+</OL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
+<A NAME="tex2html1016"
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+
+<H2><A NAME="SECTION000726000000000000000">
+psb_sizeof -- Memory occupation</A>
+</H2>
+
+<P>
+This function computes the memory occupation of a PSBLAS object.
+
+<P>
+<PRE>
+isz = psb_sizeof(a)
+isz = psb_sizeof(desc_a)
+isz = psb_sizeof(prec)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>A sparse matrix
+<IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">. 
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>desc_a</STRONG></DT>
+<DD>Communication descriptor.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
+</DD>
+<DT><STRONG>prec</STRONG></DT>
+<DD>Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a preconditioner data structure precdata<TT>psb_prec_type</TT>.
+</DD>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>The memory occupation of the object specified in
+  the calling sequence, in bytes.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Returned  as: an integer number.
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node69.html b/docs/html/node69.html
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
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+<H2><A NAME="SECTION000727000000000000000">
+Sorting utilities</A>
+</H2>
+
+<P>
+<FONT SIZE="+1"><B>psb_msort -- Sorting by the Merge-sort algorithm</B></FONT>
+<FONT SIZE="+1"><B>psb_qsort -- Sorting by the Quicksort  algorithm</B></FONT>
+<FONT SIZE="+1"><B>psb_hsort -- Sorting by the Heapsort  algorithm</B></FONT>
+<PRE>
+call psb_msort(x,ix,dir,flag)
+call psb_qsort(x,ix,dir,flag)
+call psb_hsort(x,ix,dir,flag)
+</PRE>
+
+<P>
+These  serial routines sort a sequence <IMG
+ WIDTH="18" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img106.png"
+ ALT="$X$"> into ascending or
+descending  order. The argument meaning is identical for the three
+calls; the only difference is the algorithm used to accomplish the
+task (see Usage Notes below). 
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>The sequence to be sorted.
+<BR>
+Type:<B>required</B>.
+<BR>
+Specified as: an integer, real or complex  array of rank 1.
+</DD>
+<DT><STRONG>ix</STRONG></DT>
+<DD>A vector of indices.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Specified as: an integer array of (at least) the same size as <IMG
+ WIDTH="18" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img106.png"
+ ALT="$X$">.
+</DD>
+<DT><STRONG>dir</STRONG></DT>
+<DD>The desired ordering.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Specified as: an integer value: <code>psb_sort_up_</code>,
+<code>psb_sort_down_</code>, <code>psb_asort_up_</code>, <code>psb_asort_down_</code>;
+default <code>psb_sort_up_</code>. 
+</DD>
+<DT><STRONG>flag</STRONG></DT>
+<DD>Whether to keep the original values in <IMG
+ WIDTH="27" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img107.png"
+ ALT="$IX$">.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Specified as: an integer value <code>psb_sort_ovw_idx_</code> or
+<code>psb_sort_keep_idx_</code>; default <code>psb_sort_ovw_idx_</code>.
+
+<P>
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>x</STRONG></DT>
+<DD>The sequence of values, in the chosen ordering.
+<BR>
+Type:<B>required</B>.
+<BR>
+Specified as: an integer, real or complex array of rank 1.
+</DD>
+<DT><STRONG>ix</STRONG></DT>
+<DD>A vector of indices.
+<BR>
+Type: <B>Optional</B> 
+<BR>
+An integer array of rank 1, whose entries are moved to the same
+position as the corresponding entries in <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$">.
+</DD>
+</DL>
+
+<P>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>The sorting can be performed in the up/down direction, on the
+  natural or absolute values; for  complex data the sorting can only
+  be done on the absolute values; 
+</LI>
+<LI>The routines return the items in the chosen ordering; the
+  output difference is the handling of  ties (i.e. items with an
+  equal   value) in the original input. With the merge-sort algorithm
+  ties are   preserved in the same relative order as they had in the
+  original   sequence,  while this is not guaranteed for quicksort or
+  heapsort; 
+</LI>
+<LI>If <!-- MATH
+ $flag = psb\_sort\_ovw\_idx\_$
+ -->
+<IMG
+ WIDTH="180" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img108.png"
+ ALT="$flag = psb\_sort\_ovw\_idx\_$"> then the entries in <IMG
+ WIDTH="62" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img109.png"
+ ALT="$ix(1:n)$">
+  where <IMG
+ WIDTH="14" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img13.png"
+ ALT="$n$"> is the size of <IMG
+ WIDTH="13" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img24.png"
+ ALT="$x$"> are initialized to <!-- MATH
+ $ix(i) \leftarrow
+  i$
+ -->
+<IMG
+ WIDTH="66" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img110.png"
+ ALT="$ix(i) \leftarrow
+i$">; thus, upon return from the subroutine, for each
+  index <IMG
+ WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img3.png"
+ ALT="$i$"> we have in <IMG
+ WIDTH="37" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img111.png"
+ ALT="$ix(i)$"> the position that the item <IMG
+ WIDTH="31" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img112.png"
+ ALT="$x(i)$">
+  occupied in the original data sequence;
+</LI>
+<LI>If <!-- MATH
+ $flag = psb\_sort\_keep\_idx\_$
+ -->
+<IMG
+ WIDTH="185" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img113.png"
+ ALT="$flag = psb\_sort\_keep\_idx\_$"> the routine will assume that
+  the entries in <IMG
+ WIDTH="35" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img114.png"
+ ALT="$ix(:)$"> have already been initialized by the user;
+</LI>
+<LI>The three sorting algorithms have a similar <IMG
+ WIDTH="74" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img115.png"
+ ALT="$O(n \log n)$"> expected
+  running time; in the average case quicksort will be the
+  fastest and merge-sort the slowest. However note that:
+
+<OL>
+<LI>The worst case running time for quicksort is <IMG
+ WIDTH="45" HEIGHT="34" ALIGN="MIDDLE" BORDER="0"
+ SRC="img116.png"
+ ALT="$O(n^2)$">; the algorithm
+  implemented here follows the well-known median-of-three heuristics,
+  but the worst case may still apply;
+</LI>
+<LI>The worst case running time for merge-sort and heap-sort is
+  <IMG
+ WIDTH="74" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img115.png"
+ ALT="$O(n \log n)$"> as the average case;
+</LI>
+<LI>The merge-sort algorithm is implemented to take advantage of 
+  subsequences that may be already in the desired ordering prior to
+  the subroutine call; this situation is relatively common when
+  dealing with groups of indices of sparse matrix entries, thus
+  merge-sort is often the preferred  choice when a sorting is needed
+  by other routines in the library. 
+</LI>
+</OL>
+</LI>
+</OL>
+
+<P>
+
+<P>
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+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<H2><A NAME="SECTION00034000000000000000">
+Programming model</A>
+</H2>
+
+<P>
+The PSBLAS librarary is based on the Single Program Multiple Data
+(SPMD) programming model: each process participating in the
+computation performs the same actions on a chunk of data. Parallelism
+is thus data-driven. 
+
+<P>
+Because of this structure, many subroutines coordinate their action
+across the various processes, thus providing an implicit
+synchronization point, and therefore <I>must</I> be
+called simultaneously by all processes participating in the
+computation. This is certainly true for the data allocation and
+assembly routines, for  all the computational routines and for some of
+the tools routines.
+
+<P>
+However there are many cases where no synchronization, and indeed no
+communication among processes, is implied; for instance, all the routines in
+sec.&nbsp;<A HREF="node14.html#sec:dataquery">3.4</A> are only acting on the local data structures,
+and thus may be called independently. The most important case is that
+of the coefficient insertion routines: since the number of
+coefficients in the sparse and dense matrices varies among the
+processors, and since the user is free to choose an arbitrary order in
+builiding the matrix entries, these routines cannot imply a
+synchronization. 
+
+<P>
+Throughout this user's guide each subroutine will be clearly indicated
+as:
+<DL>
+<DT><STRONG>Synchronous:</STRONG></DT>
+<DD>must be called simultaneously by all the
+  processes in the relevant communication context;
+</DD>
+<DT><STRONG>Asynchronous:</STRONG></DT>
+<DD>may be called in a totally independent manner.
+</DD>
+</DL>
+
+<P>
+<HR>
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+<B> Next:</B> <A NAME="tex2html1051"
+  HREF="node71.html">psb_init   Initializes</A>
+<B> Up:</B> <A NAME="tex2html1047"
+  HREF="userhtml.html">userhtml</A>
+<B> Previous:</B> <A NAME="tex2html1041"
+  HREF="node69.html">Sorting utilities</A>
+ &nbsp; <B>  <A NAME="tex2html1049"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H1><A NAME="SECTION00080000000000000000"></A>
+<A NAME="sec:parenv"></A>
+<BR>
+Parallel environment routines
+</H1>
+
+<P>
+<BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
+
+<UL>
+<LI><A NAME="tex2html1052"
+  HREF="node71.html">psb_init -- Initializes PSBLAS parallel environment</A>
+<LI><A NAME="tex2html1053"
+  HREF="node72.html">psb_info -- Return information about  PSBLAS parallel
+  environment</A>
+<LI><A NAME="tex2html1054"
+  HREF="node73.html">psb_exit -- Exit from  PSBLAS parallel environment</A>
+<LI><A NAME="tex2html1055"
+  HREF="node74.html">psb_get_mpicomm -- Get the MPI communicator</A>
+<LI><A NAME="tex2html1056"
+  HREF="node75.html">psb_get_rank -- Get the MPI rank</A>
+<LI><A NAME="tex2html1057"
+  HREF="node76.html">psb_wtime -- Wall clock timing</A>
+<LI><A NAME="tex2html1058"
+  HREF="node77.html">psb_barrier -- Sinchronization point  parallel
+  environment</A>
+<LI><A NAME="tex2html1059"
+  HREF="node78.html">psb_abort -- Abort a computation</A>
+<LI><A NAME="tex2html1060"
+  HREF="node79.html">psb_bcast -- Broadcast data</A>
+<LI><A NAME="tex2html1061"
+  HREF="node80.html">psb_sum -- Global sum</A>
+<LI><A NAME="tex2html1062"
+  HREF="node81.html">psb_max -- Global maximum</A>
+<LI><A NAME="tex2html1063"
+  HREF="node82.html">psb_min -- Global minimum</A>
+<LI><A NAME="tex2html1064"
+  HREF="node83.html">psb_amx -- Global maximum absolute value</A>
+<LI><A NAME="tex2html1065"
+  HREF="node84.html">psb_amn -- Global minimum absolute value</A>
+<LI><A NAME="tex2html1066"
+  HREF="node85.html">psb_snd -- Send data</A>
+<LI><A NAME="tex2html1067"
+  HREF="node86.html">psb_rcv -- Receive data</A>
+</UL>
+<!--End of Table of Child-Links-->
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node71.html b/docs/html/node71.html
new file mode 100644
index 00000000..cc55598a
--- /dev/null
+++ b/docs/html/node71.html
@@ -0,0 +1,129 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_init -- Initializes PSBLAS parallel environment</TITLE>
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+  HREF="node72.html">psb_info   Return</A>
+<B> Up:</B> <A NAME="tex2html1075"
+  HREF="node70.html">Parallel environment routines</A>
+<B> Previous:</B> <A NAME="tex2html1069"
+  HREF="node70.html">Parallel environment routines</A>
+ &nbsp; <B>  <A NAME="tex2html1077"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00081000000000000000">
+psb_init -- Initializes PSBLAS parallel environment</A>
+</H2>
+
+<P>
+<PRE>
+call psb_init(icontxt, np)
+</PRE>
+
+<P>
+This subroutine initializes the PSBLAS parallel environment, defining
+a virtual parallel machine.
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>np</STRONG></DT>
+<DD>Number of processes in the PSBLAS virtual parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value.  Default: use all available processes provided by the underlying
+parallel environment.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context identifying the virtual
+  parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: an integer variable.
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>A call to this routine must precede any other PSBLAS call. 
+</LI>
+<LI>It is an error to specify a value for <IMG
+ WIDTH="22" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img117.png"
+ ALT="$np$"> greater than the
+  number of processes available in the underlying parallel execution
+  environment. 
+</LI>
+</OL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node72.html b/docs/html/node72.html
new file mode 100644
index 00000000..ad8484eb
--- /dev/null
+++ b/docs/html/node72.html
@@ -0,0 +1,180 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_info -- Return information about PSBLAS parallel environment</TITLE>
+<META NAME="description" CONTENT="psb_info -- Return information about PSBLAS parallel environment">
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+<B> Previous:</B> <A NAME="tex2html1081"
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00082000000000000000">
+psb_info -- Return information about  PSBLAS parallel
+  environment</A>
+</H2>
+
+<P>
+<PRE>
+call psb_info(icontxt, iam, np)
+</PRE>
+
+<P>
+This subroutine returns information about  the PSBLAS parallel environment, defining
+a virtual parallel machine.
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context identifying the virtual
+  parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer variable.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>iam</STRONG></DT>
+<DD>Identifier of current  process in the PSBLAS virtual parallel machine.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: an integer value. <!-- MATH
+ $-1 \le iam \le np-1$
+ -->
+<IMG
+ WIDTH="139" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
+ SRC="img118.png"
+ ALT="$-1 \le iam \le np-1$"> </DD>
+<DT><STRONG>np</STRONG></DT>
+<DD>Number of processes in the PSBLAS virtual parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>out</B>.
+<BR>
+Specified as: an integer variable.  </DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>For processes in the virtual parallel machine  the identifier
+  will satisfy <!-- MATH
+ $0 \le iam \le np-1$
+ -->
+<IMG
+ WIDTH="128" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
+ SRC="img119.png"
+ ALT="$0 \le iam \le np-1$">;
+</LI>
+<LI>If the user has requested on <code>psb_init</code> a number of
+  processes less than the total available in the parallel execution
+  environment, the remaining processes will have on return <IMG
+ WIDTH="73" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
+ SRC="img120.png"
+ ALT="$iam=-1$">;
+  the only call involving <code>icontxt</code> that any such process may
+  execute is  to <code>psb_exit</code>. 
+</LI>
+</OL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
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diff --git a/docs/html/node73.html b/docs/html/node73.html
new file mode 100644
index 00000000..5a830604
--- /dev/null
+++ b/docs/html/node73.html
@@ -0,0 +1,158 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_exit -- Exit from PSBLAS parallel environment</TITLE>
+<META NAME="description" CONTENT="psb_exit -- Exit from PSBLAS parallel environment">
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+<B> Next:</B> <A NAME="tex2html1103"
+  HREF="node74.html">psb_get_mpicomm   Get</A>
+<B> Up:</B> <A NAME="tex2html1099"
+  HREF="node70.html">Parallel environment routines</A>
+<B> Previous:</B> <A NAME="tex2html1093"
+  HREF="node72.html">psb_info   Return</A>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00083000000000000000">
+psb_exit -- Exit from  PSBLAS parallel environment</A>
+</H2>
+
+<P>
+<PRE>
+call psb_exit(icontxt)
+call psb_exit(icontxt,close)
+</PRE>
+
+<P>
+This subroutine exits from the  PSBLAS parallel virtual  machine.
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context identifying the virtual
+  parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer variable.
+</DD>
+<DT><STRONG>close</STRONG></DT>
+<DD>Whether to close all data structures related to the
+  virtual parallel machine, besides those associated with icontxt.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a logical  variable, default value: true.
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>This routine may be called even if a previous call to
+  <code>psb_info</code> has returned with <IMG
+ WIDTH="73" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
+ SRC="img120.png"
+ ALT="$iam=-1$">; indeed, it it is the only
+  routine that may be called with argument <code>icontxt</code> in this
+  situation.
+</LI>
+<LI>A call to this routine with <code>close=.true.</code> implies a call
+  to <code>MPI_Finalize</code>, after which no parallel routine may be called.
+</LI>
+<LI>If the user whishes to use multiple communication contexts in the
+  same program, or to enter and exit multiple times into the parallel
+  environment, this routine may be called to 
+  selectively close the contexts with <code>close=.false.</code>, while on
+  the last call it should be called with <code>close=.true.</code> to
+  shutdown in a clean way the entire parallel environment.
+</LI>
+</OL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
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diff --git a/docs/html/node74.html b/docs/html/node74.html
new file mode 100644
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@@ -0,0 +1,110 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
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+<TITLE>psb_get_mpicomm -- Get the MPI communicator</TITLE>
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+<BR>
+<B> Next:</B> <A NAME="tex2html1115"
+  HREF="node75.html">psb_get_rank   Get</A>
+<B> Up:</B> <A NAME="tex2html1111"
+  HREF="node70.html">Parallel environment routines</A>
+<B> Previous:</B> <A NAME="tex2html1105"
+  HREF="node73.html">psb_exit   Exit</A>
+ &nbsp; <B>  <A NAME="tex2html1113"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00084000000000000000">
+psb_get_mpicomm -- Get the MPI communicator</A>
+</H2>
+
+<P>
+<PRE>
+call psb_get_mpicomm(icontxt, icomm)
+</PRE>
+
+<P>
+This subroutine returns the MPI communicator associated with a PSBLAS context
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context identifying the virtual
+  parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer variable.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icomm</STRONG></DT>
+<DD>The MPI communicator associated with the  PSBLAS virtual parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>out</B>.
+<BR></DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node75.html b/docs/html/node75.html
new file mode 100644
index 00000000..61953e5f
--- /dev/null
+++ b/docs/html/node75.html
@@ -0,0 +1,132 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_get_rank -- Get the MPI rank</TITLE>
+<META NAME="description" CONTENT="psb_get_rank -- Get the MPI rank">
+<META NAME="keywords" CONTENT="userhtml">
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+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html1127"
+  HREF="node76.html">psb_wtime   Wall</A>
+<B> Up:</B> <A NAME="tex2html1123"
+  HREF="node70.html">Parallel environment routines</A>
+<B> Previous:</B> <A NAME="tex2html1117"
+  HREF="node74.html">psb_get_mpicomm   Get</A>
+ &nbsp; <B>  <A NAME="tex2html1125"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00085000000000000000">
+psb_get_rank -- Get the MPI rank</A>
+</H2>
+
+<P>
+<PRE>
+call psb_get_rank(rank, icontxt, id)
+</PRE>
+
+<P>
+This subroutine returns the MPI rank of the  PSBLAS process <IMG
+ WIDTH="18" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img121.png"
+ ALT="$id$">
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context identifying the virtual
+  parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer variable.
+</DD>
+<DT><STRONG>id</STRONG></DT>
+<DD>Identifier of a   process in the PSBLAS virtual parallel machine.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value. <!-- MATH
+ $0 \le id \le np-1$
+ -->
+<IMG
+ WIDTH="113" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img122.png"
+ ALT="$0 \le id \le np-1$"> </DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>rank</STRONG></DT>
+<DD>The MPI rank associated with the  PSBLAS process <IMG
+ WIDTH="18" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img121.png"
+ ALT="$id$">.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>out</B>.
+<BR></DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node76.html b/docs/html/node76.html
new file mode 100644
index 00000000..57cf95df
--- /dev/null
+++ b/docs/html/node76.html
@@ -0,0 +1,88 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_wtime -- Wall clock timing</TITLE>
+<META NAME="description" CONTENT="psb_wtime -- Wall clock timing">
+<META NAME="keywords" CONTENT="userhtml">
+<META NAME="resource-type" CONTENT="document">
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+<META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1">
+<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
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+<!--Navigation Panel-->
+<A NAME="tex2html1138"
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+ SRC="file:/usr/share/latex2html/icons/next.png"></A> 
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+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html1139"
+  HREF="node77.html">psb_barrier   Sinchronization</A>
+<B> Up:</B> <A NAME="tex2html1135"
+  HREF="node70.html">Parallel environment routines</A>
+<B> Previous:</B> <A NAME="tex2html1129"
+  HREF="node75.html">psb_get_rank   Get</A>
+ &nbsp; <B>  <A NAME="tex2html1137"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00086000000000000000">
+psb_wtime -- Wall clock timing</A>
+</H2>
+
+<P>
+<PRE>
+time = psb_wtime()
+</PRE>
+
+<P>
+This function returns a wall clock timer. The resolution of the timer
+is dependent on the underlying parallel environment implementation.
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Exit </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>Function value</STRONG></DT>
+<DD>the elapsed time in seconds.
+<BR>
+Returned  as: a  <code>real(psb_dpk_)</code>  variable.
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node77.html b/docs/html/node77.html
new file mode 100644
index 00000000..b7b312b7
--- /dev/null
+++ b/docs/html/node77.html
@@ -0,0 +1,96 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_barrier -- Sinchronization point parallel environment</TITLE>
+<META NAME="description" CONTENT="psb_barrier -- Sinchronization point parallel environment">
+<META NAME="keywords" CONTENT="userhtml">
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+<!--Navigation Panel-->
+<A NAME="tex2html1150"
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+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html1151"
+  HREF="node78.html">psb_abort   Abort</A>
+<B> Up:</B> <A NAME="tex2html1147"
+  HREF="node70.html">Parallel environment routines</A>
+<B> Previous:</B> <A NAME="tex2html1141"
+  HREF="node76.html">psb_wtime   Wall</A>
+ &nbsp; <B>  <A NAME="tex2html1149"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00087000000000000000">
+psb_barrier -- Sinchronization point  parallel
+  environment</A>
+</H2>
+
+<P>
+<PRE>
+call psb_barrier(icontxt)
+</PRE>
+
+<P>
+This subroutine acts as an explicit synchronization point for  the  PSBLAS
+parallel virtual  machine. 
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context identifying the virtual
+  parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer variable.
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node78.html b/docs/html/node78.html
new file mode 100644
index 00000000..d49e3020
--- /dev/null
+++ b/docs/html/node78.html
@@ -0,0 +1,94 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_abort -- Abort a computation</TITLE>
+<META NAME="description" CONTENT="psb_abort -- Abort a computation">
+<META NAME="keywords" CONTENT="userhtml">
+<META NAME="resource-type" CONTENT="document">
+<META NAME="distribution" CONTENT="global">
+
+<META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1">
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+
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+<LINK REL="previous" HREF="node77.html">
+<LINK REL="up" HREF="node70.html">
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+</HEAD>
+
+<BODY >
+<!--Navigation Panel-->
+<A NAME="tex2html1162"
+  HREF="node79.html">
+<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
+ SRC="file:/usr/share/latex2html/icons/next.png"></A> 
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+ SRC="file:/usr/share/latex2html/icons/prev.png"></A> 
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+<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents"
+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html1163"
+  HREF="node79.html">psb_bcast   Broadcast</A>
+<B> Up:</B> <A NAME="tex2html1159"
+  HREF="node70.html">Parallel environment routines</A>
+<B> Previous:</B> <A NAME="tex2html1153"
+  HREF="node77.html">psb_barrier   Sinchronization</A>
+ &nbsp; <B>  <A NAME="tex2html1161"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00088000000000000000">
+psb_abort -- Abort a computation</A>
+</H2>
+
+<P>
+<PRE>
+call psb_abort(icontxt)
+</PRE>
+
+<P>
+This subroutine aborts computation on the parallel virtual machine. 
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context identifying the virtual
+  parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer variable.
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node79.html b/docs/html/node79.html
new file mode 100644
index 00000000..ebd8088e
--- /dev/null
+++ b/docs/html/node79.html
@@ -0,0 +1,170 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_bcast -- Broadcast data</TITLE>
+<META NAME="description" CONTENT="psb_bcast -- Broadcast data">
+<META NAME="keywords" CONTENT="userhtml">
+<META NAME="resource-type" CONTENT="document">
+<META NAME="distribution" CONTENT="global">
+
+<META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1">
+<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
+
+<LINK REL="STYLESHEET" HREF="userhtml.css">
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+<LINK REL="previous" HREF="node78.html">
+<LINK REL="up" HREF="node70.html">
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+</HEAD>
+
+<BODY >
+<!--Navigation Panel-->
+<A NAME="tex2html1174"
+  HREF="node80.html">
+<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
+ SRC="file:/usr/share/latex2html/icons/next.png"></A> 
+<A NAME="tex2html1170"
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+<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up"
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+<BR>
+<B> Next:</B> <A NAME="tex2html1175"
+  HREF="node80.html">psb_sum   Global</A>
+<B> Up:</B> <A NAME="tex2html1171"
+  HREF="node70.html">Parallel environment routines</A>
+<B> Previous:</B> <A NAME="tex2html1165"
+  HREF="node78.html">psb_abort   Abort</A>
+ &nbsp; <B>  <A NAME="tex2html1173"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00089000000000000000">
+psb_bcast -- Broadcast data</A>
+</H2>
+
+<P>
+<PRE>
+call psb_bcast(icontxt, dat, root)
+</PRE>
+
+<P>
+This subroutine implements a broadcast operation based on the
+underlying communication library. 
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context identifying the virtual
+  parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer variable.
+</DD>
+<DT><STRONG>dat</STRONG></DT>
+<DD>On the root process, the data to be broadcast.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an integer, real or complex variable, which may be a
+scalar, or a rank 1 or 2 array, or a character or logical variable,
+which may be a scalar or rank 1 array.  Type, kind, rank and size must agree on all processes.
+</DD>
+<DT><STRONG>root</STRONG></DT>
+<DD>Root process holding data to be broadcast.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value <!-- MATH
+ $0<= root <= np-1$
+ -->
+<IMG
+ WIDTH="153" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img123.png"
+ ALT="$0&lt;= root &lt;= np-1$">, default 0  </DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>dat</STRONG></DT>
+<DD>On processes other than  root, the data to be broadcast.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an integer, real or complex variable, which may be a
+scalar, or a rank 1 or 2 array, or a character or logical scalar.  Type, kind, rank and size must agree on all processes.
+</DD>
+</DL>
+
+<P>
+<HR>
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diff --git a/docs/html/node8.html b/docs/html/node8.html
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@@ -0,0 +1,150 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>Data Structures</TITLE>
+<META NAME="description" CONTENT="Data Structures">
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+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
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+  HREF="node9.html">Descriptor data structure</A>
+<B> Up:</B> <A NAME="tex2html250"
+  HREF="userhtml.html">userhtml</A>
+<B> Previous:</B> <A NAME="tex2html244"
+  HREF="node7.html">Programming model</A>
+ &nbsp; <B>  <A NAME="tex2html252"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H1><A NAME="SECTION00040000000000000000"></A>
+<A NAME="sec:datastruct"></A>
+<BR>
+Data Structures
+</H1>
+
+<P>
+In this chapter we  illustrate the  data structures used for definition of
+routines interfaces. They  include data structures for sparse matrices,
+communication descriptors and preconditioners.
+<P>
+All the data types and the basic subroutine interfaces are defined in
+the module <code>psb_base_mod</code>; this will have to be included by every
+user subroutine that makes use of the library. 
+
+<P>
+Real and complex data types are parametrized with a kind type defined
+in the library as follows: 
+<DL>
+<DT><STRONG>psb_spk_</STRONG></DT>
+<DD>Kind parameter for short precision real and complex
+  data; corresponds to a <code>REAL</code> declaration and is
+  normally 4 bytes. 
+</DD>
+<DT><STRONG>psb_dpk_</STRONG></DT>
+<DD>Kind parameter for long precision real and complex
+  data; corresponds to a <code>DOUBLE PRECISION</code> declaration and is
+  normally 8 bytes. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
+
+<UL>
+<LI><A NAME="tex2html255"
+  HREF="node9.html">Descriptor data structure</A>
+<UL>
+<LI><A NAME="tex2html256"
+  HREF="node10.html">Named Constants</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html257"
+  HREF="node11.html">Sparse Matrix data structure</A>
+<UL>
+<LI><A NAME="tex2html258"
+  HREF="node12.html">Named Constants</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html259"
+  HREF="node13.html">Preconditioner data structure</A>
+<LI><A NAME="tex2html260"
+  HREF="node14.html">Data structure query routines</A>
+<UL>
+<LI><A NAME="tex2html261"
+  HREF="node15.html">psb_cd_get_local_rows -- Get number of local rows</A>
+<LI><A NAME="tex2html262"
+  HREF="node16.html">psb_cd_get_local_cols -- Get number of local cols</A>
+<LI><A NAME="tex2html263"
+  HREF="node17.html">psb_cd_get_global_rows -- Get number of global rows</A>
+<LI><A NAME="tex2html264"
+  HREF="node18.html">psb_cd_get_global_cols -- Get number of global cols</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html265"
+  HREF="node19.html">
+<DIV ALIGN="LEFT">
+psb_cd_get_context--Get communication context 
+</DIV></A>
+<UL>
+<LI><A NAME="tex2html266"
+  HREF="node20.html">psb_cd_get_large_threshold -- Get threshold for
+  index mapping switch</A>
+<LI><A NAME="tex2html267"
+  HREF="node21.html">psb_cd_set_large_threshold -- Set threshold for
+  index mapping switch</A>
+<LI><A NAME="tex2html268"
+  HREF="node22.html">psb_sp_get_nrows -- Get number of  rows in a sparse
+  matrix</A>
+<LI><A NAME="tex2html269"
+  HREF="node23.html">psb_sp_get_ncols -- Get number of  columns in a
+  sparse matrix</A>
+<LI><A NAME="tex2html270"
+  HREF="node24.html">psb_sp_get_nnzeros -- Get number of nonzero elements
+  in a sparse matrix</A>
+</UL></UL>
+<!--End of Table of Child-Links-->
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node80.html b/docs/html/node80.html
new file mode 100644
index 00000000..50f964fe
--- /dev/null
+++ b/docs/html/node80.html
@@ -0,0 +1,185 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_sum -- Global sum</TITLE>
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+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000810000000000000000">
+psb_sum -- Global sum</A>
+</H2>
+
+<P>
+<PRE>
+call psb_sum(icontxt, dat, root)
+</PRE>
+
+<P>
+This subroutine implements a sum reduction  operation based on the
+underlying communication library. 
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context identifying the virtual
+  parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer variable.
+</DD>
+<DT><STRONG>dat</STRONG></DT>
+<DD>The local contribution to the global sum.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an integer, real or complex variable, which may be a
+scalar, or a rank 1 or 2 array.  Type, kind, rank and size must agree on all processes.
+</DD>
+<DT><STRONG>root</STRONG></DT>
+<DD>Process to hold the final sum, or <IMG
+ WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img79.png"
+ ALT="$-1$"> to make it available
+  on all processes.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value <!-- MATH
+ $-1<= root <= np-1$
+ -->
+<IMG
+ WIDTH="165" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img124.png"
+ ALT="$-1&lt;= root &lt;= np-1$">, default -1.  </DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>dat</STRONG></DT>
+<DD>On destination process(es), the result of the sum operation.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an integer, real or complex variable, which may be a
+scalar, or a rank 1 or 2 array. 
+<BR>
+Type, kind, rank and size must agree on all processes.
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>The <code>dat</code> argument is both input and output, and its
+  value may be changed even on processes different from the final
+  result destination.
+</LI>
+</OL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
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+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
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+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<TITLE>psb_max -- Global maximum</TITLE>
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+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000811000000000000000">
+psb_max -- Global maximum</A>
+</H2>
+
+<P>
+<PRE>
+call psb_max(icontxt, dat, root)
+</PRE>
+
+<P>
+This subroutine implements a maximum valuereduction
+operation based on the underlying communication library. 
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context identifying the virtual
+  parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer variable.
+</DD>
+<DT><STRONG>dat</STRONG></DT>
+<DD>The local contribution to the global maximum.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an integer or  real variable, which may be a
+scalar, or a rank 1 or 2 array.  Type, kind, rank and size must agree on all processes.
+</DD>
+<DT><STRONG>root</STRONG></DT>
+<DD>Process to hold the final maximum, or <IMG
+ WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img79.png"
+ ALT="$-1$"> to make it available
+  on all processes.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value <!-- MATH
+ $-1<= root <= np-1$
+ -->
+<IMG
+ WIDTH="165" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img124.png"
+ ALT="$-1&lt;= root &lt;= np-1$">, default -1. 
+<BR></DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>dat</STRONG></DT>
+<DD>On destination process(es), the result of the maximum operation.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer or  real variable, which may be a
+scalar, or a rank 1 or 2 array.  Type, kind, rank and size must agree on all processes.
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>The <code>dat</code> argument is both input and output, and its
+  value may be changed even on processes different from the final
+  result destination.
+</LI>
+</OL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000812000000000000000">
+psb_min -- Global minimum</A>
+</H2>
+
+<P>
+<PRE>
+call psb_min(icontxt, dat, root)
+</PRE>
+
+<P>
+This subroutine implements a minimum value reduction
+operation based on the underlying communication library. 
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context identifying the virtual
+  parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer variable.
+</DD>
+<DT><STRONG>dat</STRONG></DT>
+<DD>The local contribution to the global minimum.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an integer  or real variable, which may be a
+scalar, or a rank 1 or 2 array.  Type, kind, rank and size must agree on all processes.
+</DD>
+<DT><STRONG>root</STRONG></DT>
+<DD>Process to hold the final value, or <IMG
+ WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img79.png"
+ ALT="$-1$"> to make it available
+  on all processes.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value <!-- MATH
+ $-1<= root <= np-1$
+ -->
+<IMG
+ WIDTH="165" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img124.png"
+ ALT="$-1&lt;= root &lt;= np-1$">, default -1. 
+<BR></DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>dat</STRONG></DT>
+<DD>On destination process(es), the result of the minimum operation.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an integer  or  real variable, which may be a
+scalar, or a rank 1 or 2 array. 
+<BR>
+Type, kind, rank and size must agree on all processes.
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>The <code>dat</code> argument is both input and output, and its
+  value may be changed even on processes different from the final
+  result destination.
+</LI>
+</OL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
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diff --git a/docs/html/node83.html b/docs/html/node83.html
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+++ b/docs/html/node83.html
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<TITLE>psb_amx -- Global maximum absolute value</TITLE>
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+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000813000000000000000">
+psb_amx -- Global maximum absolute value</A>
+</H2>
+
+<P>
+<PRE>
+call psb_amx(icontxt, dat, root)
+</PRE>
+
+<P>
+This subroutine implements a maximum absolute value reduction
+operation based on the underlying communication library. 
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context identifying the virtual
+  parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer variable.
+</DD>
+<DT><STRONG>dat</STRONG></DT>
+<DD>The local contribution to the global maximum.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an integer, real or complex variable, which may be a
+scalar, or a rank 1 or 2 array.  Type, kind, rank and size must agree on all processes.
+</DD>
+<DT><STRONG>root</STRONG></DT>
+<DD>Process to hold the final value, or <IMG
+ WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img79.png"
+ ALT="$-1$"> to make it available
+  on all processes.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value <!-- MATH
+ $-1<= root <= np-1$
+ -->
+<IMG
+ WIDTH="165" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img124.png"
+ ALT="$-1&lt;= root &lt;= np-1$">, default -1. 
+<BR></DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>dat</STRONG></DT>
+<DD>On destination process(es), the result of the maximum operation.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an integer, real or complex variable, which may be a
+scalar, or a rank 1 or 2 array.  Type, kind, rank and size must agree on all processes.
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>The <code>dat</code> argument is both input and output, and its
+  value may be changed even on processes different from the final
+  result destination.
+</LI>
+</OL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
+<A NAME="tex2html1222"
+  HREF="node84.html">
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diff --git a/docs/html/node84.html b/docs/html/node84.html
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@@ -0,0 +1,186 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+<HEAD>
+<TITLE>psb_amn -- Global minimum absolute value</TITLE>
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+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000814000000000000000">
+psb_amn -- Global minimum absolute value</A>
+</H2>
+
+<P>
+<PRE>
+call psb_amn(icontxt, dat, root)
+</PRE>
+
+<P>
+This subroutine implements a minimum absolute value reduction
+operation based on the underlying communication library. 
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context identifying the virtual
+  parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer variable.
+</DD>
+<DT><STRONG>dat</STRONG></DT>
+<DD>The local contribution to the global minimum.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an integer, real or complex variable, which may be a
+scalar, or a rank 1 or 2 array.  Type, kind, rank and size must agree on all processes.
+</DD>
+<DT><STRONG>root</STRONG></DT>
+<DD>Process to hold the final value, or <IMG
+ WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img79.png"
+ ALT="$-1$"> to make it available
+  on all processes.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value <!-- MATH
+ $-1<= root <= np-1$
+ -->
+<IMG
+ WIDTH="165" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img124.png"
+ ALT="$-1&lt;= root &lt;= np-1$">, default -1. 
+<BR></DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>dat</STRONG></DT>
+<DD>On destination process(es), the result of the minimum operation.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an integer, real or complex variable, which may be a
+scalar, or a rank 1 or 2 array. 
+<BR>
+Type, kind, rank and size must agree on all processes.
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>The <code>dat</code> argument is both input and output, and its
+  value may be changed even on processes different from the final
+  result destination.
+</LI>
+</OL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
+<A NAME="tex2html1234"
+  HREF="node85.html">
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+  HREF="node85.html">psb_snd   Send</A>
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+
+<H2><A NAME="SECTION000815000000000000000">
+psb_snd -- Send data</A>
+</H2>
+
+<P>
+<PRE>
+call psb_snd(icontxt, dat, dst, m)
+</PRE>
+
+<P>
+This subroutine sends a packet of data to a destination.
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous: see usage notes. 
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context identifying the virtual
+  parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer variable.
+</DD>
+<DT><STRONG>dat</STRONG></DT>
+<DD>The data to be sent.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer, real or complex variable, which may be a
+scalar, or a rank 1 or 2 array, or a character or logical scalar.  Type, kind and  rank must agree on sender and receiver process; if <IMG
+ WIDTH="18" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img125.png"
+ ALT="$m$"> is
+not specified, size must agree as well. 
+</DD>
+<DT><STRONG>dst</STRONG></DT>
+<DD>Destination process.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value <!-- MATH
+ $0<= dst <= np-1$
+ -->
+<IMG
+ WIDTH="145" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img126.png"
+ ALT="$0&lt;= dst &lt;= np-1$">. 
+<BR></DD>
+<DT><STRONG>m</STRONG></DT>
+<DD>Number of rows.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>Optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value <!-- MATH
+ $0<= m <= size(dat,1)$
+ -->
+<IMG
+ WIDTH="172" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img127.png"
+ ALT="$0&lt;= m &lt;= size(dat,1)$">. 
+<BR>
+When <IMG
+ WIDTH="26" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img128.png"
+ ALT="$dat$"> is a rank 2 array, specifies the number of rows to be sent
+independently of the leading dimension <IMG
+ WIDTH="83" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img129.png"
+ ALT="$size(dat,1)$">; must have the
+same value on sending and receiving processes.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>This subroutine implies a synchronization, but only between the
+  calling process and the destination  process <IMG
+ WIDTH="25" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img130.png"
+ ALT="$dst$">.
+</LI>
+</OL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
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diff --git a/docs/html/node86.html b/docs/html/node86.html
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
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+
+<H2><A NAME="SECTION000816000000000000000">
+psb_rcv -- Receive data</A>
+</H2>
+
+<P>
+<PRE>
+call psb_rcv(icontxt, dat, src, m)
+</PRE>
+
+<P>
+This subroutine receives a packet of data to a destination.
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Synchronous: see usage notes.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context identifying the virtual
+  parallel machine.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer variable.
+</DD>
+<DT><STRONG>src</STRONG></DT>
+<DD>Source process.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value <!-- MATH
+ $0<= src <= np-1$
+ -->
+<IMG
+ WIDTH="146" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img131.png"
+ ALT="$0&lt;= src &lt;= np-1$">. 
+<BR></DD>
+<DT><STRONG>m</STRONG></DT>
+<DD>Number of rows.
+<BR>
+Scope: <B>global</B>.
+<BR>
+Type: <B>Optional</B>.
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer value <!-- MATH
+ $0<= m <= size(dat,1)$
+ -->
+<IMG
+ WIDTH="172" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img127.png"
+ ALT="$0&lt;= m &lt;= size(dat,1)$">. 
+<BR>
+When <IMG
+ WIDTH="26" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img128.png"
+ ALT="$dat$"> is a rank 2 array, specifies the number of rows to be sent
+independently of the leading dimension <IMG
+ WIDTH="83" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img129.png"
+ ALT="$size(dat,1)$">; must have the
+same value on sending and receiving processes.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>dat</STRONG></DT>
+<DD>The data to be received.
+<BR>
+Scope: <B>local</B>.
+<BR>
+Type: <B>required</B>.
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: an integer, real or complex variable, which may be a
+scalar, or a rank 1 or 2 array, or a character or logical scalar.  Type, kind and  rank must agree on sender and receiver process; if <IMG
+ WIDTH="18" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img125.png"
+ ALT="$m$"> is
+not specified, size must agree as well. 
+</DD>
+</DL>
+
+<P>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+
+<OL>
+<LI>This subroutine implies a synchronization, but only between the
+  calling process and the source  process <IMG
+ WIDTH="26" HEIGHT="13" ALIGN="BOTTOM" BORDER="0"
+ SRC="img132.png"
+ ALT="$src$">.
+</LI>
+</OL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
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diff --git a/docs/html/node87.html b/docs/html/node87.html
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>Error handling</TITLE>
+<META NAME="description" CONTENT="Error handling">
+<META NAME="keywords" CONTENT="userhtml">
+<META NAME="resource-type" CONTENT="document">
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H1><A NAME="SECTION00090000000000000000">
+Error handling</A>
+</H1>
+
+<P>
+The PSBLAS library error handling policy has been completely rewritten
+in version 2.0. The idea behind the design of this new error handling
+strategy is to keep error messages on a stack allowing the user to
+trace back up to the point where the first error message has been
+generated. Every routine in the PSBLAS-2.0 library has, as last
+non-optional argument, an integer <code>info</code> variable; whenever,
+inside the routine, an error is detected, this variable is set to a
+value corresponding to a specific error code. Then this error code is
+also pushed on the error stack and then either control is returned to
+the caller routine or the execution is aborted, depending on the users
+choice. At the time when the execution is aborted, an error message is
+printed on standard output with a level of verbosity than can be
+chosen by the user. If the execution is not aborted, then, the caller
+routine checks the value returned in the <code>info</code> variable and, if
+not zero, an error condition is raised. This process continues on all the
+levels of nested calls until the level where the user decides to abort
+the program execution.
+
+<P>
+Figure&nbsp;<A HREF="#fig:routerr">8</A> shows the layout of a generic <code>psb_foo</code>
+routine with respect to the PSBLAS-2.0 error handling policy. It is
+possible to see how, whenever an error condition is detected, the
+<code>info</code> variable is set to the corresponding error code which is,
+then, pushed on top of the stack by means of the
+<code>psb_errpush</code>. An error condition may be directly detected inside
+a routine or indirectly checking the error code returned returned by a
+called routine. Whenever an error is encountered, after it has been
+pushed on stack, the program execution skips to a point where the
+error condition is handled; the error condition is handled either by
+returning control to the caller routine or by calling the
+<code>psb\_error</code> routine which prints the content of the error stack
+and aborts the program execution, according to the choice made by the
+user with <code>psb_set_erraction</code>. The default is to print the error
+and terminate the program, but the user may choose to handle the error
+explicitly. 
+
+<P>
+
+<DIV ALIGN="CENTER"><A NAME="fig:routerr"></A><A NAME="6356"></A>
+<TABLE>
+<CAPTION ALIGN="BOTTOM"><STRONG>Figure 8:</STRONG>
+The layout of a generic <TT>psb_foo</TT>
+  routine with respect to PSBLAS-2.0 error handling policy.</CAPTION>
+<TR><TD>
+<BR>
+   
+  <DIV ALIGN="CENTER">
+<!-- MATH
+ $\fbox{\TheSbox}$
+ -->
+<IMG
+ WIDTH="536" HEIGHT="218" ALIGN="MIDDLE" BORDER="0"
+ SRC="img17.png"
+ ALT="\fbox{\TheSbox}">
+</DIV></TD></TR>
+</TABLE>
+</DIV>
+
+<P>
+Figure&nbsp;<A HREF="#fig:errormsg">9</A> reports a sample error message generated by
+the PSBLAS-2.0 library. This error has been generated by the fact that
+the user has chosen the invalid ``FOO'' storage format to represent
+the sparse matrix. From this error message it is possible to see that
+the error has been detected inside the <code>psb_cest</code> subroutine
+called by <code>psb_spasb</code> ... by process 0 (i.e. the root process).
+
+<P>
+
+<DIV ALIGN="CENTER"><A NAME="fig:errormsg"></A><A NAME="6357"></A>
+<TABLE>
+<CAPTION ALIGN="BOTTOM"><STRONG>Figure 9:</STRONG>
+A sample PSBLAS-2.0 error
+    message. Process 0 detected an error condition inside the  psb_cest subroutine</CAPTION>
+<TR><TD>
+<BR>
+   
+  <DIV ALIGN="CENTER">
+<!-- MATH
+ $\fbox{\TheSbox}$
+ -->
+<IMG
+ WIDTH="536" HEIGHT="218" ALIGN="MIDDLE" BORDER="0"
+ SRC="img17.png"
+ ALT="\fbox{\TheSbox}">
+</DIV></TD></TR>
+</TABLE>
+</DIV>
+
+<P>
+<BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
+
+<UL>
+<LI><A NAME="tex2html1270"
+  HREF="node88.html">psb_errpush -- Pushes an error code onto the error
+  stack</A>
+<LI><A NAME="tex2html1271"
+  HREF="node89.html">psb_error -- Prints the error stack content and aborts
+  execution</A>
+<LI><A NAME="tex2html1272"
+  HREF="node90.html">psb_set_errverbosity -- Sets the verbosity of error
+  messages.</A>
+<LI><A NAME="tex2html1273"
+  HREF="node91.html">psb_set_erraction -- Set the type of action to be
+  taken  upon error condition.</A>
+</UL>
+<!--End of Table of Child-Links-->
+<HR>
+<!--Navigation Panel-->
+<A NAME="tex2html1268"
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diff --git a/docs/html/node88.html b/docs/html/node88.html
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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+
+<H2><A NAME="SECTION00091000000000000000">
+psb_errpush -- Pushes an error code onto the error
+  stack</A>
+</H2>
+
+<P>
+<PRE>
+call psb_errpush(err_c, r_name, i_err, a_err)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>err_c</STRONG></DT>
+<DD>the error code
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer.
+</DD>
+<DT><STRONG>r_name</STRONG></DT>
+<DD>the soutine where the error has been caught.
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a string.
+<BR></DD>
+<DT><STRONG>i_err</STRONG></DT>
+<DD>addional info for error code
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Specified as: an integer array
+<BR></DD>
+<DT><STRONG>a_err</STRONG></DT>
+<DD>addional info for error code
+<BR>
+Scope: <B>local</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Specified as: a string.
+<BR></DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node89.html b/docs/html/node89.html
new file mode 100644
index 00000000..40f05367
--- /dev/null
+++ b/docs/html/node89.html
@@ -0,0 +1,93 @@
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+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_error -- Prints the error stack content and aborts execution</TITLE>
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+  HREF="node88.html">psb_errpush   Pushes</A>
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+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00092000000000000000">
+psb_error -- Prints the error stack content and aborts
+  execution</A>
+</H2>
+
+<P>
+<PRE>
+call psb_error(icontxt)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>icontxt</STRONG></DT>
+<DD>the communication context.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>optional</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer.
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node9.html b/docs/html/node9.html
new file mode 100644
index 00000000..dab63b95
--- /dev/null
+++ b/docs/html/node9.html
@@ -0,0 +1,257 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>Descriptor data structure</TITLE>
+<META NAME="description" CONTENT="Descriptor data structure">
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+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00041000000000000000"></A>
+<A NAME="sec:desc"></A>
+<BR>
+Descriptor data structure
+</H2>
+All the general matrix informations and elements to be
+exchanged among processes are stored within a data structure of the
+type descdata<TT>psb_desc_type</TT>. 
+Every structure of this type is associated to a sparse matrix, it
+contains data about general matrix informations and elements to be
+exchanged among processes.  
+
+<P>
+It is not necessary for the user to know the internal structure of
+<code>psb_desc_type</code>, it is set in a transparent mode by the tools
+routines of Sec.&nbsp;<A HREF="node42.html#sec:toolsrout">6</A>, and its fields may be accessed
+if necessary via  the routines of sec.&nbsp;<A HREF="node14.html#sec:dataquery">3.4</A>;
+nevertheless we include a  description for the curious 
+reader:   
+<DL>
+<DT><STRONG><B>matrix_data</B></STRONG></DT>
+<DD>includes general information about matrix and
+process grid, such as the communication context, the size of the
+global matrix, the size of the portion of matrix stored on the current
+process, and so on. 
+Specified as: an allocatable integer array of dimension <code>psb_mdata_size_</code>.
+</DD>
+<DT><STRONG><B>halo_index</B></STRONG></DT>
+<DD>A list of the halo and boundary elements for
+the current process to be exchanged with other processes; for each
+processes with which it is necessary to communicate:
+
+<OL>
+<LI>Process identifier;
+</LI>
+<LI>Number of points to be received;
+</LI>
+<LI>Indices of points to be received;
+</LI>
+<LI>Number of points to be sent;
+</LI>
+<LI>Indices of points to be sent;
+</LI>
+</OL>
+The list may contain an arbitrary number of groups; its end is marked
+by a -1.
+<BR>
+Specified as: an allocatable integer array of rank one.
+</DD>
+<DT><STRONG><B>ext_index</B></STRONG></DT>
+<DD>A list of element indices to be exchanged to
+  implement the mapping between a base descriptor and a descriptor
+  with overlap. 
+</DD>
+<DT><STRONG><B>ovrlap_index</B></STRONG></DT>
+<DD>A list of the overlap elements for the
+current process, organized in groups like the previous vector:
+
+<OL>
+<LI>Process identifier;
+</LI>
+<LI>Number of points to be received;
+</LI>
+<LI>Indices of points to be received;
+</LI>
+<LI>Number of points to be sent;
+</LI>
+<LI>Indices of points to be sent;
+</LI>
+</OL>
+The list may contain an arbitrary number of groups; its end is marked
+by a -1.
+<BR>
+Specified as: an allocatable integer array  of rank one.
+</DD>
+<DT><STRONG><B>ovr_mst_idx</B></STRONG></DT>
+<DD>A list to retrieve the value of each
+  overlap element from the respective master process.
+<BR>
+Specified as: an allocatable integer array of rank one.
+</DD>
+<DT><STRONG><B>ovrlap_elem</B></STRONG></DT>
+<DD>For all overlap points belonging to th
+ecurrent process:
+
+<OL>
+<LI>Overlap point index;
+</LI>
+<LI>Number of processes sharing that overlap points;
+</LI>
+<LI>Index of a ``master'' process: 
+</LI>
+</OL>
+Specified as: an allocatable integer array of rank two.
+</DD>
+<DT><STRONG><B>loc_to_glob</B></STRONG></DT>
+<DD>each element <IMG
+ WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img3.png"
+ ALT="$i$"> of this array contains
+global identifier of the local variable <IMG
+ WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
+ SRC="img3.png"
+ ALT="$i$">.
+<BR>
+Specified as: an allocatable integer array of rank one.
+</DD>
+<DT><STRONG><B>glob_to_loc, glb_lc, hashv</B></STRONG></DT>
+<DD>Contain a mapping from
+  global to local indices. 
+</DD>
+</DL>
+The Fortran&nbsp;95 definition  for <code>psb_desc_type</code> structures is 
+as follows:
+
+<DIV ALIGN="CENTER"><A NAME="fig:desctype"></A><A NAME="618"></A>
+<TABLE>
+<CAPTION ALIGN="BOTTOM"><STRONG>Figure 3:</STRONG>
+The PSBLAS defined data type that
+    contains the communication descriptor.</CAPTION>
+<TR><TD>
+<BR>
+   
+  <DIV ALIGN="CENTER">
+<!-- MATH
+ $\fbox{\TheSbox}$
+ -->
+<IMG
+ WIDTH="536" HEIGHT="218" ALIGN="MIDDLE" BORDER="0"
+ SRC="img17.png"
+ ALT="\fbox{\TheSbox}">
+</DIV></TD></TR>
+</TABLE>
+</DIV>
+
+<P>
+A communication descriptor associated with a sparse  matrix has a
+state, which can take the following values:
+<DL>
+<DT><STRONG>Build:</STRONG></DT>
+<DD>State entered after the first allocation, and before the
+  first assembly; in this state it is possible to add communication
+  requirements among different processes. 
+</DD>
+<DT><STRONG>Assembled:</STRONG></DT>
+<DD>State entered after the assembly; computations using
+  the associated sparse matrix, such as matrix-vector products, are
+  only possible   in this state.
+</DD>
+</DL>
+The global to local index  mapping may be stored in two different
+formats: the first is simpler but more expensive, as it requires on
+each process an amount of memory proportional to the global size of
+the index space; the second is more complex, but only requires memory
+proportional to the local index space size. The choice is made at the
+time of the initialization according to a threshold; this threshold
+may be queried and set using the functions in
+sec.&nbsp;<A HREF="node14.html#sec:dataquery">3.4</A>. 
+
+<P>
+<BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
+
+<UL>
+<LI><A NAME="tex2html283"
+  HREF="node10.html">Named Constants</A>
+</UL>
+<!--End of Table of Child-Links-->
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_set_errverbosity -- Sets the verbosity of error messages.</TITLE>
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+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00093000000000000000">
+psb_set_errverbosity -- Sets the verbosity of error
+  messages.</A>
+</H2>
+
+<P>
+<PRE>
+call psb_set_errverbosity(v)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>v</STRONG></DT>
+<DD>the verbosity level
+<BR>
+Scope: <B>global</B>
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer.
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
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+</HTML>
diff --git a/docs/html/node91.html b/docs/html/node91.html
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+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_set_erraction -- Set the type of action to be taken upon error condition.</TITLE>
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+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html1319"
+  HREF="node92.html">Utilities</A>
+<B> Up:</B> <A NAME="tex2html1315"
+  HREF="node87.html">Error handling</A>
+<B> Previous:</B> <A NAME="tex2html1311"
+  HREF="node90.html">psb_set_errverbosity   Sets</A>
+ &nbsp; <B>  <A NAME="tex2html1317"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION00094000000000000000">
+psb_set_erraction -- Set the type of action to be
+  taken  upon error condition.</A>
+</H2>
+
+<P>
+<PRE>
+call psb_set_erraction(err_act)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>err_act</STRONG></DT>
+<DD>the type of action.
+<BR>
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: an integer. Possible values: <code>psb_act_ret</code>,
+<code>psb_act_abort</code>. 
+</DD>
+</DL>
+
+<P>
+<PRE>
+call psb_errcomm(icontxt, err)
+</PRE>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node92.html b/docs/html/node92.html
new file mode 100644
index 00000000..7631306f
--- /dev/null
+++ b/docs/html/node92.html
@@ -0,0 +1,95 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>Utilities</TITLE>
+<META NAME="description" CONTENT="Utilities">
+<META NAME="keywords" CONTENT="userhtml">
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+ SRC="file:/usr/share/latex2html/icons/contents.png"></A>  
+<BR>
+<B> Next:</B> <A NAME="tex2html1331"
+  HREF="node93.html">hb_read   Read</A>
+<B> Up:</B> <A NAME="tex2html1327"
+  HREF="userhtml.html">userhtml</A>
+<B> Previous:</B> <A NAME="tex2html1321"
+  HREF="node91.html">psb_set_erraction   Set</A>
+ &nbsp; <B>  <A NAME="tex2html1329"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H1><A NAME="SECTION000100000000000000000"></A>
+<A NAME="sec:util"></A>
+<BR>
+Utilities
+</H1>
+
+<P>
+We have some utitlities available for input and output of
+sparsematrices; the interfaces to these routines are available in the
+module <code>psb_util_mod</code>.
+
+<P>
+<BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
+
+<UL>
+<LI><A NAME="tex2html1332"
+  HREF="node93.html">hb_read -- Read a sparse matrix from a file in the
+  Harwell-Boeing format</A>
+<LI><A NAME="tex2html1333"
+  HREF="node94.html">hb_write -- Write a sparse matrix to a  file
+  in the Harwell-Boeing format</A>
+<LI><A NAME="tex2html1334"
+  HREF="node95.html">mm_mat_read -- Read a sparse matrix from a
+  file in the MatrixMarket format</A>
+<LI><A NAME="tex2html1335"
+  HREF="node96.html">mm_vet_read -- Read a dense vector from a
+  file in the MatrixMarket format</A>
+<LI><A NAME="tex2html1336"
+  HREF="node97.html">mm_mat_write -- Write a sparse matrix to a
+  file in the MatrixMarket format</A>
+</UL>
+<!--End of Table of Child-Links-->
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node93.html b/docs/html/node93.html
new file mode 100644
index 00000000..a9872f18
--- /dev/null
+++ b/docs/html/node93.html
@@ -0,0 +1,164 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>hb_read -- Read a sparse matrix from a file in the Harwell-Boeing format</TITLE>
+<META NAME="description" CONTENT="hb_read -- Read a sparse matrix from a file in the Harwell-Boeing format">
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+  HREF="node94.html">hb_write   Write</A>
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+<B> Previous:</B> <A NAME="tex2html1338"
+  HREF="node92.html">Utilities</A>
+ &nbsp; <B>  <A NAME="tex2html1346"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000101000000000000000">
+hb_read -- Read a sparse matrix from a file in the
+  Harwell-Boeing format</A>
+</H2>
+
+<P>
+<PRE>
+call hb_read(a, iret, iunit, filename, b, mtitle)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>filename</STRONG></DT>
+<DD>The name of the file to be read.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Specified as: a character variable containing a valid file name, or
+<code>-</code>, in which case the default input unit  5 (i.e. standard input
+in Unix jargon) is used. Default: <code>-</code>. 
+</DD>
+<DT><STRONG>iunit</STRONG></DT>
+<DD>The Fortran file unit number.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Specified as: an integer value. Only meaningful if filename is not <code>-</code>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the sparse matrix read from file.
+<BR>
+Type:<B>required</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>b</STRONG></DT>
+<DD>Rigth hand side(s).
+<BR>
+Type: <B>Optional</B> 
+<BR>
+An  array of type real or complex, rank 2 and having the ALLOCATABLE
+attribute; will be allocated and filled in if the input file contains
+a right hand side, otherwise will be left in the UNALLOCATED state. 
+</DD>
+<DT><STRONG>mtitle</STRONG></DT>
+<DD>Matrix title.
+<BR>
+Type: <B>Optional</B> 
+<BR>
+A charachter variable of length 72 holding a copy of the
+matrix title as specified by the Harwell-Boeing format and contained
+in the input file.
+</DD>
+<DT><STRONG>iret</STRONG></DT>
+<DD>Error code.
+<BR>
+Type: <B>required</B> 
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
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+</HTML>
diff --git a/docs/html/node94.html b/docs/html/node94.html
new file mode 100644
index 00000000..a70ad484
--- /dev/null
+++ b/docs/html/node94.html
@@ -0,0 +1,173 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>hb_write -- Write a sparse matrix to a file in the Harwell-Boeing format</TITLE>
+<META NAME="description" CONTENT="hb_write -- Write a sparse matrix to a file in the Harwell-Boeing format">
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+  HREF="node95.html">mm_mat_read   Read</A>
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+<B> Previous:</B> <A NAME="tex2html1350"
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000102000000000000000">
+hb_write -- Write a sparse matrix to a  file
+  in the Harwell-Boeing format</A>
+</H2>
+
+<P>
+<PRE>
+call hb_write(a, iret, iunit, filename, key, rhs, mtitle)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the sparse matrix to be written.
+<BR>
+Type:<B>required</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>b</STRONG></DT>
+<DD>Rigth hand side.
+<BR>
+Type: <B>Optional</B> 
+<BR>
+An  array of type real or complex, rank 1 and having the ALLOCATABLE
+attribute; will be allocated and filled in if the input file contains
+a right hand side. 
+</DD>
+<DT><STRONG>filename</STRONG></DT>
+<DD>The name of the file to be written to.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Specified as: a character variable containing a valid file name, or
+<code>-</code>, in which case the default output unit  6 (i.e. standard output
+in Unix jargon) is used. Default: <code>-</code>. 
+</DD>
+<DT><STRONG>iunit</STRONG></DT>
+<DD>The Fortran file unit number.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Specified as: an integer value. Only meaningful if filename is not <code>-</code>.
+</DD>
+<DT><STRONG>key</STRONG></DT>
+<DD>Matrix key.
+<BR>
+Type: <B>Optional</B> 
+<BR>
+A charachter variable of length 8 holding the
+matrix key as specified by the Harwell-Boeing format and to be
+written to file.
+</DD>
+<DT><STRONG>mtitle</STRONG></DT>
+<DD>Matrix title.
+<BR>
+Type: <B>Optional</B> 
+<BR>
+A charachter variable of length 72 holding the
+matrix title as specified by the Harwell-Boeing format and to be
+written to file.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>iret</STRONG></DT>
+<DD>Error code.
+<BR>
+Type: <B>required</B> 
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<HR>
+<!--Navigation Panel-->
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diff --git a/docs/html/node95.html b/docs/html/node95.html
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>mm_mat_read -- Read a sparse matrix from a file in the MatrixMarket format</TITLE>
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+<B> Next:</B> <A NAME="tex2html1372"
+  HREF="node96.html">mm_vet_read   Read</A>
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+  HREF="node92.html">Utilities</A>
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+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000103000000000000000">
+mm_mat_read -- Read a sparse matrix from a
+  file in the MatrixMarket format</A>
+</H2>
+
+<P>
+<PRE>
+call mm_mat_read(a, iret, iunit, filename)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>filename</STRONG></DT>
+<DD>The name of the file to be read.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Specified as: a character variable containing a valid file name, or
+<code>-</code>, in which case the default input unit  5 (i.e. standard input
+in Unix jargon) is used. Default: <code>-</code>. 
+</DD>
+<DT><STRONG>iunit</STRONG></DT>
+<DD>The Fortran file unit number.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Specified as: an integer value. Only meaningful if filename is not <code>-</code>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the sparse matrix read from file.
+<BR>
+Type:<B>required</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>iret</STRONG></DT>
+<DD>Error code.
+<BR>
+Type: <B>required</B> 
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node96.html b/docs/html/node96.html
new file mode 100644
index 00000000..9f7b7513
--- /dev/null
+++ b/docs/html/node96.html
@@ -0,0 +1,120 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>mm_vet_read -- Read a dense vector from a file in the MatrixMarket format</TITLE>
+<META NAME="description" CONTENT="mm_vet_read -- Read a dense vector from a file in the MatrixMarket format">
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+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000104000000000000000">
+mm_vet_read -- Read a dense vector from a
+  file in the MatrixMarket format</A>
+</H2>
+
+<PRE>
+call mm_vet_read(b, iret, iunit, filename)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>filename</STRONG></DT>
+<DD>The name of the file to be read.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Specified as: a character variable containing a valid file name, or
+<code>-</code>, in which case the default input unit  5 (i.e. standard input
+in Unix jargon) is used. Default: <code>-</code>. 
+</DD>
+<DT><STRONG>iunit</STRONG></DT>
+<DD>The Fortran file unit number.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Specified as: an integer value. Only meaningful if filename is not <code>-</code>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>b</STRONG></DT>
+<DD>Rigth hand side(s).
+<BR>
+Type: <B>required</B> 
+<BR>
+An  array of type real or complex, rank 2 and having the ALLOCATABLE
+attribute; will be allocated and filled in if the input file contains
+a right hand side, otherwise will be left in the UNALLOCATED state. 
+</DD>
+<DT><STRONG>iret</STRONG></DT>
+<DD>Error code.
+<BR>
+Type: <B>required</B> 
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node97.html b/docs/html/node97.html
new file mode 100644
index 00000000..d834c807
--- /dev/null
+++ b/docs/html/node97.html
@@ -0,0 +1,123 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>mm_mat_write -- Write a sparse matrix to a file in the MatrixMarket format</TITLE>
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+  HREF="node98.html">Preconditioner routines</A>
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+  HREF="node96.html">mm_vet_read   Read</A>
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+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000105000000000000000">
+mm_mat_write -- Write a sparse matrix to a
+  file in the MatrixMarket format</A>
+</H2>
+
+<PRE>
+call mm_mat_write(a, mtitle, iret, iunit, filename)
+</PRE>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry </B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>a</STRONG></DT>
+<DD>the sparse matrix to be written.
+<BR>
+Type:<B>required</B>.
+<BR>
+Specified as: a structured data of type spdata<TT>psb_spmat_type</TT>.
+</DD>
+<DT><STRONG>mtitle</STRONG></DT>
+<DD>Matrix title.
+<BR>
+Type: <B>required</B> 
+<BR>
+A charachter variable holding a descriptive title for the matrix to be
+ written to file.
+</DD>
+<DT><STRONG>filename</STRONG></DT>
+<DD>The name of the file to be written to.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Specified as: a character variable containing a valid file name, or
+<code>-</code>, in which case the default output unit  6 (i.e. standard output
+in Unix jargon) is used. Default: <code>-</code>. 
+</DD>
+<DT><STRONG>iunit</STRONG></DT>
+<DD>The Fortran file unit number.
+<BR>
+Type:<B>optional</B>.
+<BR>
+Specified as: an integer value. Only meaningful if filename is not <code>-</code>.
+</DD>
+</DL>
+
+<P>
+<DL>
+<DT><STRONG><B>On Return</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>iret</STRONG></DT>
+<DD>Error code.
+<BR>
+Type: <B>required</B> 
+<BR>
+An integer value; 0 means no error has been detected. 
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node98.html b/docs/html/node98.html
new file mode 100644
index 00000000..60801ac6
--- /dev/null
+++ b/docs/html/node98.html
@@ -0,0 +1,97 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>Preconditioner routines</TITLE>
+<META NAME="description" CONTENT="Preconditioner routines">
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+<BR>
+<B> Next:</B> <A NAME="tex2html1406"
+  HREF="node99.html">psb_precinit   Initialize</A>
+<B> Up:</B> <A NAME="tex2html1402"
+  HREF="userhtml.html">userhtml</A>
+<B> Previous:</B> <A NAME="tex2html1396"
+  HREF="node97.html">mm_mat_write   Write</A>
+ &nbsp; <B>  <A NAME="tex2html1404"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H1><A NAME="SECTION000110000000000000000"></A>
+<A NAME="sec:precs"></A>
+<BR>
+Preconditioner routines
+</H1>
+
+<P>
+<A NAME="sec:psprecs"></A>The base PSBLAS library  contains the implementation of two simple
+preconditioning techniques:
+
+<UL>
+<LI>Diagonal Scaling
+</LI>
+<LI>Block Jacobi with ILU(0) factorization
+</LI>
+</UL>
+The supporting data type and subroutine interfaces are defined in the
+module  <code>psb_prec_mod</code>.
+
+<P>
+<BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
+
+<UL>
+<LI><A NAME="tex2html1407"
+  HREF="node99.html">psb_precinit -- Initialize a  preconditioner</A>
+<LI><A NAME="tex2html1408"
+  HREF="node100.html">psb_precbld -- Builds a preconditioner</A>
+<LI><A NAME="tex2html1409"
+  HREF="node101.html">psb_precaply -- Preconditioner application routine</A>
+<LI><A NAME="tex2html1410"
+  HREF="node102.html">psb_precdescr -- Prints a description of current
+  preconditioner</A>
+</UL>
+<!--End of Table of Child-Links-->
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/node99.html b/docs/html/node99.html
new file mode 100644
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--- /dev/null
+++ b/docs/html/node99.html
@@ -0,0 +1,146 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
+<HEAD>
+<TITLE>psb_precinit -- Initialize a preconditioner</TITLE>
+<META NAME="description" CONTENT="psb_precinit -- Initialize a preconditioner">
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+<BR>
+<B> Next:</B> <A NAME="tex2html1422"
+  HREF="node100.html">psb_precbld   Builds</A>
+<B> Up:</B> <A NAME="tex2html1418"
+  HREF="node98.html">Preconditioner routines</A>
+<B> Previous:</B> <A NAME="tex2html1412"
+  HREF="node98.html">Preconditioner routines</A>
+ &nbsp; <B>  <A NAME="tex2html1420"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+
+<H2><A NAME="SECTION000111000000000000000">
+psb_precinit -- Initialize a  preconditioner</A>
+</H2>
+
+<P>
+<PRE>
+call psb_precinit(prec, ptype, info)
+</PRE>
+
+<P>
+<DL>
+<DT><STRONG>Type:</STRONG></DT>
+<DD>Asynchronous.
+</DD>
+<DT><STRONG><B>On Entry</B></STRONG></DT>
+<DD>
+</DD>
+<DT><STRONG>ptype</STRONG></DT>
+<DD>the type of preconditioner. 
+Scope: <B>global</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>in</B>.
+<BR>
+Specified as: a character string, see usage notes.
+</DD>
+<DT><STRONG><B>On Exit</B></STRONG></DT>
+<DD><P>
+</DD>
+<DT><STRONG>prec</STRONG></DT>
+<DD>Scope: <B>local</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>inout</B>.
+<BR>
+Specified as: a preconditioner data structure precdata<TT>psb_prec_type</TT>.
+</DD>
+<DT><STRONG>info</STRONG></DT>
+<DD>Scope: <B>global</B> 
+<BR>
+Type: <B>required</B>
+<BR>
+Intent: <B>out</B>.
+<BR>
+Error code: if no error, 0 is returned.
+</DD>
+</DL>
+<FONT SIZE="+1"><B>Notes</B></FONT>
+Legal inputs to this subroutine are interpreted depending on the
+<IMG
+ WIDTH="42" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
+ SRC="img135.png"
+ ALT="$ptype$"> string as follows<A NAME="tex2html28"
+  HREF="footnode.html#foot6689"><SUP>3</SUP></A>:
+<DL>
+<DT><STRONG>NONE</STRONG></DT>
+<DD>No preconditioning, i.e. the preconditioner is just a copy
+  operator.
+</DD>
+<DT><STRONG>DIAG</STRONG></DT>
+<DD>Diagonal scaling; each entry of the input vector is
+  multiplied by the reciprocal of the sum of the absolute values of
+  the coefficients in the corresponding row of matrix  <IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">;
+</DD>
+<DT><STRONG>BJAC</STRONG></DT>
+<DD>Precondition by a  factorization of the
+  block-diagonal of matrix <IMG
+ WIDTH="16" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
+ SRC="img1.png"
+ ALT="$A$">, where block boundaries are determined
+  by the data allocation boundaries for each process; requires no
+  communication. Only the incomplete factorization <IMG
+ WIDTH="56" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
+ SRC="img136.png"
+ ALT="$ILU(0)$"> is
+  currently implemented.  
+</DD>
+</DL>
+
+<P>
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/html/userhtml.css b/docs/html/userhtml.css
new file mode 100644
index 00000000..d1824aff
--- /dev/null
+++ b/docs/html/userhtml.css
@@ -0,0 +1,30 @@
+/* Century Schoolbook font is very similar to Computer Modern Math: cmmi */
+.MATH    { font-family: "Century Schoolbook", serif; }
+.MATH I  { font-family: "Century Schoolbook", serif; font-style: italic }
+.BOLDMATH { font-family: "Century Schoolbook", serif; font-weight: bold }
+
+/* implement both fixed-size and relative sizes */
+SMALL.XTINY		{ font-size : xx-small }
+SMALL.TINY		{ font-size : x-small  }
+SMALL.SCRIPTSIZE	{ font-size : smaller  }
+SMALL.FOOTNOTESIZE	{ font-size : small    }
+SMALL.SMALL		{  }
+BIG.LARGE		{  }
+BIG.XLARGE		{ font-size : large    }
+BIG.XXLARGE		{ font-size : x-large  }
+BIG.HUGE		{ font-size : larger   }
+BIG.XHUGE		{ font-size : xx-large }
+
+/* heading styles */
+H1		{  }
+H2		{  }
+H3		{  }
+H4		{  }
+H5		{  }
+
+/* mathematics styles */
+DIV.displaymath		{ }	/* math displays */
+TD.eqno			{ }	/* equation-number cells */
+
+
+/* document-specific styles come next */
diff --git a/docs/html/userhtml.html b/docs/html/userhtml.html
new file mode 100644
index 00000000..9569fcac
--- /dev/null
+++ b/docs/html/userhtml.html
@@ -0,0 +1,354 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
+
+<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
+original version by:  Nikos Drakos, CBLU, University of Leeds
+* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
+* with significant contributions from:
+  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
+<HTML>
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+<BR>
+<B> Next:</B> <A NAME="tex2html32"
+  HREF="node1.html">Contents</A>
+ &nbsp; <B>  <A NAME="tex2html30"
+  HREF="node1.html">Contents</A></B> 
+<BR>
+<BR>
+<!--End of Navigation Panel-->
+<FONT SIZE="+2"><B>PSBLAS
+<BR>
+<BR>
+User's and Reference
+  Guide</B></FONT>
+<BR><I><FONT SIZE="+1">A reference guide for the Parallel Sparse BLAS library</FONT></I>
+<BR>
+<BR>
+<BR>
+<BR><B>Salvatore Filippone
+<BR>
+Alfredo Buttari </B> 
+<BR>
+University of Rome ``Tor Vergata'', Italy
+<BR>
+<BR>
+<BR>
+Software version: 2.3
+<BR>
+July 24, 2008
+
+         <BR><HR>
+<!--Table of Child-Links-->
+<A NAME="CHILD_LINKS"></A>
+
+<UL>
+<LI><A NAME="tex2html33"
+  HREF="node1.html">Contents</A>
+<LI><A NAME="tex2html34"
+  HREF="node2.html">Introduction</A>
+<LI><A NAME="tex2html35"
+  HREF="node3.html">General overview</A>
+<UL>
+<LI><A NAME="tex2html36"
+  HREF="node4.html">Basic Nomenclature</A>
+<LI><A NAME="tex2html37"
+  HREF="node5.html">Library contents</A>
+<LI><A NAME="tex2html38"
+  HREF="node6.html">Application structure</A>
+<LI><A NAME="tex2html39"
+  HREF="node7.html">Programming model</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html40"
+  HREF="node8.html">Data Structures</A>
+<UL>
+<LI><A NAME="tex2html41"
+  HREF="node9.html">Descriptor data structure</A>
+<UL>
+<LI><A NAME="tex2html42"
+  HREF="node10.html">Named Constants</A>
+</UL>
+<LI><A NAME="tex2html43"
+  HREF="node11.html">Sparse Matrix data structure</A>
+<UL>
+<LI><A NAME="tex2html44"
+  HREF="node12.html">Named Constants</A>
+</UL>
+<LI><A NAME="tex2html45"
+  HREF="node13.html">Preconditioner data structure</A>
+<LI><A NAME="tex2html46"
+  HREF="node14.html">Data structure query routines</A>
+<UL>
+<LI><A NAME="tex2html47"
+  HREF="node15.html">psb_cd_get_local_rows -- Get number of local rows</A>
+<LI><A NAME="tex2html48"
+  HREF="node16.html">psb_cd_get_local_cols -- Get number of local cols</A>
+<LI><A NAME="tex2html49"
+  HREF="node17.html">psb_cd_get_global_rows -- Get number of global rows</A>
+<LI><A NAME="tex2html50"
+  HREF="node18.html">psb_cd_get_global_cols -- Get number of global cols</A>
+</UL>
+<LI><A NAME="tex2html51"
+  HREF="node19.html">
+<DIV ALIGN="LEFT">
+psb_cd_get_context--Get communication context 
+</DIV></A>
+<UL>
+<LI><A NAME="tex2html52"
+  HREF="node20.html">psb_cd_get_large_threshold -- Get threshold for
+  index mapping switch</A>
+<LI><A NAME="tex2html53"
+  HREF="node21.html">psb_cd_set_large_threshold -- Set threshold for
+  index mapping switch</A>
+<LI><A NAME="tex2html54"
+  HREF="node22.html">psb_sp_get_nrows -- Get number of  rows in a sparse
+  matrix</A>
+<LI><A NAME="tex2html55"
+  HREF="node23.html">psb_sp_get_ncols -- Get number of  columns in a
+  sparse matrix</A>
+<LI><A NAME="tex2html56"
+  HREF="node24.html">psb_sp_get_nnzeros -- Get number of nonzero elements
+  in a sparse matrix</A>
+</UL>
+</UL>
+<BR>
+<LI><A NAME="tex2html57"
+  HREF="node25.html">Computational routines</A>
+<UL>
+<LI><A NAME="tex2html58"
+  HREF="node26.html">psb_geaxpby -- General Dense Matrix Sum</A>
+<LI><A NAME="tex2html59"
+  HREF="node27.html">psb_gedot -- Dot Product</A>
+<LI><A NAME="tex2html60"
+  HREF="node28.html">psb_gedots -- Generalized Dot Product</A>
+<LI><A NAME="tex2html61"
+  HREF="node29.html">psb_geamax -- Infinity-Norm of Vector</A>
+<LI><A NAME="tex2html62"
+  HREF="node30.html">psb_geamaxs -- Generalized Infinity Norm</A>
+<LI><A NAME="tex2html63"
+  HREF="node31.html">psb_geasum -- 1-Norm of Vector</A>
+<LI><A NAME="tex2html64"
+  HREF="node32.html">psb_geasums -- Generalized 1-Norm of Vector</A>
+<LI><A NAME="tex2html65"
+  HREF="node33.html">psb_genrm2s -- Generalized 1-Norm of Vector</A>
+<LI><A NAME="tex2html66"
+  HREF="node34.html">psb_spnrmi -- Infinity Norm of Sparse Matrix</A>
+<LI><A NAME="tex2html67"
+  HREF="node35.html">psb_spmm -- Sparse Matrix by Dense Matrix Product</A>
+<LI><A NAME="tex2html68"
+  HREF="node36.html">psb_spsm -- Triangular System Solve</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html69"
+  HREF="node37.html">Communication routines</A>
+<UL>
+<LI><A NAME="tex2html70"
+  HREF="node38.html">psb_halo -- Halo Data Communication</A>
+<LI><A NAME="tex2html71"
+  HREF="node39.html">psb_ovrl -- Overlap Update</A>
+<LI><A NAME="tex2html72"
+  HREF="node40.html">psb_gather -- Gather Global Dense Matrix</A>
+<LI><A NAME="tex2html73"
+  HREF="node41.html">psb_scatter -- Scatter Global Dense Matrix</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html74"
+  HREF="node42.html">Data management routines</A>
+<UL>
+<LI><A NAME="tex2html75"
+  HREF="node43.html">psb_cdall -- Allocates a communication descriptor</A>
+<LI><A NAME="tex2html76"
+  HREF="node44.html">psb_cdins -- Communication descriptor insert routine</A>
+<LI><A NAME="tex2html77"
+  HREF="node45.html">psb_cdasb -- Communication descriptor assembly routine</A>
+<LI><A NAME="tex2html78"
+  HREF="node46.html">psb_cdcpy -- Copies a communication descriptor</A>
+<LI><A NAME="tex2html79"
+  HREF="node47.html">psb_cdfree -- Frees a communication descriptor</A>
+<LI><A NAME="tex2html80"
+  HREF="node48.html">psb_cdbldext -- Build an extended  communication
+  descriptor</A>
+<LI><A NAME="tex2html81"
+  HREF="node49.html">psb_spall -- Allocates a sparse matrix</A>
+<LI><A NAME="tex2html82"
+  HREF="node50.html">psb_spins -- Insert a cloud of elements into a sparse
+  matrix</A>
+<LI><A NAME="tex2html83"
+  HREF="node51.html">psb_spasb -- Sparse matrix assembly routine</A>
+<LI><A NAME="tex2html84"
+  HREF="node52.html">psb_spfree -- Frees a sparse matrix</A>
+<LI><A NAME="tex2html85"
+  HREF="node53.html">psb_sprn -- Reinit sparse matrix structure for psblas
+  routines.</A>
+<LI><A NAME="tex2html86"
+  HREF="node54.html">psb_geall -- Allocates a dense matrix</A>
+<LI><A NAME="tex2html87"
+  HREF="node55.html">psb_geins -- Dense matrix insertion routine</A>
+<LI><A NAME="tex2html88"
+  HREF="node56.html">psb_geasb -- Assembly a dense matrix</A>
+<LI><A NAME="tex2html89"
+  HREF="node57.html">psb_gefree -- Frees a dense matrix</A>
+<LI><A NAME="tex2html90"
+  HREF="node58.html">psb_gelp -- Applies a left permutation to a dense
+  matrix</A>
+<LI><A NAME="tex2html91"
+  HREF="node59.html">psb_glob_to_loc -- Global to local indices
+  convertion</A>
+<LI><A NAME="tex2html92"
+  HREF="node60.html">psb_loc_to_glob -- Local to global indices
+  conversion</A>
+<LI><A NAME="tex2html93"
+  HREF="node61.html">psb_is_owned </A>
+<LI><A NAME="tex2html94"
+  HREF="node62.html">psb_owned_index </A>
+<LI><A NAME="tex2html95"
+  HREF="node63.html">psb_is_local </A>
+<LI><A NAME="tex2html96"
+  HREF="node64.html">psb_local_index </A>
+<LI><A NAME="tex2html97"
+  HREF="node65.html">psb_get_boundary -- Extract list of boundary elements</A>
+<LI><A NAME="tex2html98"
+  HREF="node66.html">psb_get_overlap -- Extract list of overlap elements</A>
+<LI><A NAME="tex2html99"
+  HREF="node67.html">psb_sp_getrow -- Extract row(s) from a sparse matrix</A>
+<LI><A NAME="tex2html100"
+  HREF="node68.html">psb_sizeof -- Memory occupation</A>
+<LI><A NAME="tex2html101"
+  HREF="node69.html">Sorting utilities</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html102"
+  HREF="node70.html">Parallel environment routines</A>
+<UL>
+<LI><A NAME="tex2html103"
+  HREF="node71.html">psb_init -- Initializes PSBLAS parallel environment</A>
+<LI><A NAME="tex2html104"
+  HREF="node72.html">psb_info -- Return information about  PSBLAS parallel
+  environment</A>
+<LI><A NAME="tex2html105"
+  HREF="node73.html">psb_exit -- Exit from  PSBLAS parallel environment</A>
+<LI><A NAME="tex2html106"
+  HREF="node74.html">psb_get_mpicomm -- Get the MPI communicator</A>
+<LI><A NAME="tex2html107"
+  HREF="node75.html">psb_get_rank -- Get the MPI rank</A>
+<LI><A NAME="tex2html108"
+  HREF="node76.html">psb_wtime -- Wall clock timing</A>
+<LI><A NAME="tex2html109"
+  HREF="node77.html">psb_barrier -- Sinchronization point  parallel
+  environment</A>
+<LI><A NAME="tex2html110"
+  HREF="node78.html">psb_abort -- Abort a computation</A>
+<LI><A NAME="tex2html111"
+  HREF="node79.html">psb_bcast -- Broadcast data</A>
+<LI><A NAME="tex2html112"
+  HREF="node80.html">psb_sum -- Global sum</A>
+<LI><A NAME="tex2html113"
+  HREF="node81.html">psb_max -- Global maximum</A>
+<LI><A NAME="tex2html114"
+  HREF="node82.html">psb_min -- Global minimum</A>
+<LI><A NAME="tex2html115"
+  HREF="node83.html">psb_amx -- Global maximum absolute value</A>
+<LI><A NAME="tex2html116"
+  HREF="node84.html">psb_amn -- Global minimum absolute value</A>
+<LI><A NAME="tex2html117"
+  HREF="node85.html">psb_snd -- Send data</A>
+<LI><A NAME="tex2html118"
+  HREF="node86.html">psb_rcv -- Receive data</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html119"
+  HREF="node87.html">Error handling</A>
+<UL>
+<LI><A NAME="tex2html120"
+  HREF="node88.html">psb_errpush -- Pushes an error code onto the error
+  stack</A>
+<LI><A NAME="tex2html121"
+  HREF="node89.html">psb_error -- Prints the error stack content and aborts
+  execution</A>
+<LI><A NAME="tex2html122"
+  HREF="node90.html">psb_set_errverbosity -- Sets the verbosity of error
+  messages.</A>
+<LI><A NAME="tex2html123"
+  HREF="node91.html">psb_set_erraction -- Set the type of action to be
+  taken  upon error condition.</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html124"
+  HREF="node92.html">Utilities</A>
+<UL>
+<LI><A NAME="tex2html125"
+  HREF="node93.html">hb_read -- Read a sparse matrix from a file in the
+  Harwell-Boeing format</A>
+<LI><A NAME="tex2html126"
+  HREF="node94.html">hb_write -- Write a sparse matrix to a  file
+  in the Harwell-Boeing format</A>
+<LI><A NAME="tex2html127"
+  HREF="node95.html">mm_mat_read -- Read a sparse matrix from a
+  file in the MatrixMarket format</A>
+<LI><A NAME="tex2html128"
+  HREF="node96.html">mm_vet_read -- Read a dense vector from a
+  file in the MatrixMarket format</A>
+<LI><A NAME="tex2html129"
+  HREF="node97.html">mm_mat_write -- Write a sparse matrix to a
+  file in the MatrixMarket format</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html130"
+  HREF="node98.html">Preconditioner routines</A>
+<UL>
+<LI><A NAME="tex2html131"
+  HREF="node99.html">psb_precinit -- Initialize a  preconditioner</A>
+<LI><A NAME="tex2html132"
+  HREF="node100.html">psb_precbld -- Builds a preconditioner</A>
+<LI><A NAME="tex2html133"
+  HREF="node101.html">psb_precaply -- Preconditioner application routine</A>
+<LI><A NAME="tex2html134"
+  HREF="node102.html">psb_precdescr -- Prints a description of current
+  preconditioner</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html135"
+  HREF="node103.html">Iterative Methods</A>
+<UL>
+<LI><A NAME="tex2html136"
+  HREF="node104.html">psb_krylov  -- Krylov Methods Driver
+      Routine</A>
+</UL>
+<BR>
+<LI><A NAME="tex2html137"
+  HREF="node105.html">Bibliography</A>
+<LI><A NAME="tex2html138"
+  HREF="node106.html">About this document ...</A>
+</UL>
+<!--End of Table of Child-Links-->
+<BR><HR>
+
+</BODY>
+</HTML>
diff --git a/docs/pdf/Makefile b/docs/pdf/Makefile
index e9da3a0d..6a224157 100644
--- a/docs/pdf/Makefile
+++ b/docs/pdf/Makefile
@@ -84,6 +84,7 @@
 #
 
 TOPFILE   = userguide.tex
+HTMLFILE  = userhtml.tex
 SECFILE   = title.tex intro.tex commrout.tex datastruct.tex psbrout.tex toolsrout.tex\
 	methods.tex precs.tex penv.tex error.tex util.tex
 FIGDIR    = figures
@@ -110,6 +111,8 @@ DATE     = $(shell date +%Y-%m-%d)
 ##
 ## Programs
 #
+LATEX    = latex
+LTX2HTML = latex2html
 PDFLATEX = pdflatex
 ACRO     = evince
 XPDF     = xpdf
@@ -126,7 +129,7 @@ CLEANIDX = ../bin/cleanidx
 ##
 ## Files
 #
-TEXFILES = $(TOPFILE) $(SECFILE)
+TEXFILES = $(TOPFILE) $(SECFILE) $(HTMLFILE)
 RCSFILES = $(TEXFILES) Makefile
 
 BASEFILE = $(patsubst %.tex,%,$(TOPFILE))
@@ -135,6 +138,10 @@ PDF      = $(join $(BASEFILE),.pdf)
 PS       = $(join $(BASEFILE),.ps)
 GXS      = $(join $(BASEFILE),.gxs)
 GLX      = $(join $(BASEFILE),.glx)
+BASEHTML = $(patsubst %.tex,%,$(HTMLFILE))
+HTML     = $(join $(HTMLFILE),.html)
+HTMLDIR  = ../html
+HTMLFLAGS = -noaddress
 
 FIGURES  = $(sort $(wildcard $(FIGDIR)/*))
 GLOFILES:= $(sort $(wildcard lib/*.gdf))
@@ -150,8 +157,10 @@ TEXLNFIL = $(addprefix $(PWD)/,$(TEXFILES))
 
 #============================================================================
 
-all: $(PDF)
-	@echo $(PDF)
+all: pdf html
+	
+pdf: $(PDF)
+html: $(HTML)
 
 $(PDF): $(TEXFILES) $(LIBFILES) $(FIGURES) Makefile
 	$(header)
@@ -169,6 +178,22 @@ $(PDF): $(TEXFILES) $(LIBFILES) $(FIGURES) Makefile
 	$(pdflatex-filter)
 	$(finish)
 
+$(HTML): $(TEXFILES) $(LIBFILES) $(FIGURES) Makefile
+	$(header)
+	$(initialize)
+	$(latex-filter)
+        ifneq ($(BIBFILES),)
+	  $(bibtex)
+	  $(latex-filter)
+        endif
+        ifneq ($(GLOFILES),)
+	  $(glosstex)
+	  $(latex-filter)
+        endif
+#	$(makeindex)
+	$(latex-filter)
+	$(ltx2html-filter)
+
 $(PS): $(PDF)
 	$(PDF2PS) $< $(PS)
 
@@ -269,6 +294,14 @@ define pdflatex
   cd tmp; $(PDFLATEX) $(TOPFILE)
 endef
 
+define latex
+  @echo
+  @echo "----- latex -------------------------------------------------------"
+  @echo -n "Starting: "; date
+  @echo
+  cd tmp; $(LATEX) $(HTMLFILE)
+endef
+
 #----------------------------------------------------------------------------
 
 define pdflatex-filter
@@ -279,6 +312,22 @@ define pdflatex-filter
   cd tmp; ($(PDFLATEX) $(TOPFILE) 2>&1) | $(FILTER)
 endef
 
+define latex-filter
+  @echo
+  @echo "----- latex -------------------------------------------------------"
+  @echo -n "Starting: "; date
+  @echo
+  cd tmp; ($(LATEX) $(HTMLFILE) 2>&1) | $(FILTER)
+endef
+
+define ltx2html-filter
+  @echo
+  @echo "----- latex -------------------------------------------------------"
+  @echo -n "Starting: "; date
+  @echo
+  cd tmp; ($(LTX2HTML) $(HTMLFLAGS) -dir ../$(HTMLDIR) $(HTMLFILE)  2>&1) | $(FILTER)
+endef
+
 #----------------------------------------------------------------------------
 
 define bibtex
@@ -323,4 +372,14 @@ define finish
   @echo -n "Target: "
 endef
 
+define ltx2html-finish
+  @ln -sf tmp/$@ .
+  @echo
+  @echo "----- finish ---------------------------------------------------------"
+  @echo -n "Start:  "$(START); echo
+  @echo -n "Finish: "; date
+  @echo -n "Output: "; ls -l -o tmp/$@
+  @echo -n "Target: "
+endef
+
 
diff --git a/docs/pdf/commrout.tex b/docs/pdf/commrout.tex
index 74ecd37d..88d30464 100644
--- a/docs/pdf/commrout.tex
+++ b/docs/pdf/commrout.tex
@@ -8,7 +8,8 @@ The routines in this chapter implement various global communication operators
 on vectors associated with a discretization mesh. For auxiliary communication
 routines not tied to a discretization space see~\ref{sec:toolsrout}.
 
-\subroutine{psb\_halo}{Halo Data Communication}    
+\clearpage\subsection*{psb\_halo --- Halo Data Communication}    
+\addcontentsline{toc}{subsection}{psb\_halo}
 
 These subroutines gathers the values of the halo
 elements, and  (optionally) scale the result:
@@ -36,8 +37,10 @@ Long Precision Complex & psb\_halo \\
 \caption{Data types\label{tab:f90halo}}
 \end{table}
 
-\syntax{call psb\_halo}{x, desc\_a, info}
-\syntax*{call psb\_halo}{x, desc\_a, info, alpha, work, data}
+\begin{verbatim}
+call psb_halo(x, desc_a, info)
+call psb_halo(x, desc_a, info, alpha, work, data)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -93,7 +96,8 @@ An integer value that contains an error code.
 \end{center}
 \caption{Sample discretization mesh.\label{fig:try8x8}}
 \end{figure}
-\section*{Example of use}
+
+{\par\noindent\large\bfseries Usage Example}
 Consider the discretization mesh depicted in fig.~\ref{fig:try8x8},
 partitioned among two processes as shown by the dashed line; the data
 distribution is such that each process will own 32 entries in the
@@ -159,7 +163,8 @@ following:
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
-\subroutine{psb\_ovrl}{Overlap Update}    
+\clearpage\subsection*{psb\_ovrl --- Overlap Update}    
+\addcontentsline{toc}{subsection}{psb\_ovrl}
 
 These subroutines applies an overlap operator to the input vector:
 
@@ -187,8 +192,10 @@ Long Precision Complex & psb\_ovrl \\
 \caption{Data types\label{tab:f90ovrl}}
 \end{table}
 
-\syntax{call psb\_ovrl}{x, desc\_a, info}
-\syntax*{call psb\_ovrl}{x, desc\_a, info, update=update\_type, work=work} 
+\begin{verbatim}
+call psb_ovrl(x, desc_a, info)
+call psb_ovrl(x, desc_a, info, update=update_type, work=work)
+\end{verbatim} 
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -239,7 +246,7 @@ An integer value; 0 means no error has been detected.
 \end{description}
 
 
-\section*{Usage notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item If there is no overlap in the data distribution associated with
   the descriptor, no operations are performed;
@@ -263,7 +270,7 @@ their instances.
 \end{center}
 \caption{Sample discretization mesh.\label{fig:try8x8_ov}}
 \end{figure}
-\section*{Example of use}
+{\par\noindent\large\bfseries Example of use}
 Consider the discretization mesh depicted in fig.~\ref{fig:try8x8_ov},
 partitioned among two processes as shown by the dashed lines, with an
 overlap of 1 extra layer with respect to the partition of
@@ -343,7 +350,8 @@ following (showing a transition among the two subdomains)
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-\subroutine{psb\_gather}{Gather Global Dense Matrix}
+\clearpage\subsection*{psb\_gather --- Gather Global Dense Matrix}
+\addcontentsline{toc}{subsection}{psb\_gather}
 
 These subroutines collect the portions of global dense matrix
 distributed over all process into one single array stored on one
@@ -375,8 +383,10 @@ Long Precision Complex & psb\_gather \\
 \caption{Data types\label{tab:gather}}
 \end{table}
 
-\syntax{call psb\_gather}{glob\_x, loc\_x, desc\_a, info, root}
-\syntax{call psb\_gather}{glob\_x, loc\_x, desc\_a, info, root}
+\begin{verbatim}
+call psb_gather(glob_x, loc_x, desc_a, info, root)
+call psb_gather(glob_x, loc_x, desc_a, info, root)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -442,7 +452,8 @@ An integer value; 0 means no error has been detected.
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-\subroutine{psb\_scatter}{Scatter Global Dense Matrix}
+\clearpage\subsection*{psb\_scatter --- Scatter Global Dense Matrix}
+\addcontentsline{toc}{subsection}{psb\_scatter}
 
 These subroutines scatters the portions of global dense matrix owned
 by a process to all the processes in the processes grid.
@@ -473,8 +484,10 @@ Long Precision Complex & psb\_scatter \\
 \caption{Data types\label{tab:scatter}}
 \end{table}
 
-\syntax{call psb\_scatter}{glob\_x, loc\_x, desc\_a, info, root}
-\syntax{call psb\_scatter}{glob\_x, loc\_x, desc\_a, info, root}
+\begin{verbatim}
+call psb_scatter(glob_x, loc_x, desc_a, info, root)
+call psb_scatter(glob_x, loc_x, desc_a, info, root)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Synchronous.
diff --git a/docs/pdf/datastruct.tex b/docs/pdf/datastruct.tex
index a86555d0..6a82d3a0 100644
--- a/docs/pdf/datastruct.tex
+++ b/docs/pdf/datastruct.tex
@@ -450,9 +450,12 @@ research.
 
 \subsection{Data structure query routines}
 \label{sec:dataquery}
-\subsubroutine{psb\_cd\_get\_local\_rows}{Get number of local rows}
+\subsubsection*{psb\_cd\_get\_local\_rows --- Get number of local rows}
+\addcontentsline{toc}{subsubsection}{psb\_cd\_get\_local\_rows }
 
-\syntax{nr = psb\_cd\_get\_local\_rows}{desc}
+\begin{verbatim}
+nr = psb_cd_get_local_rows(desc)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -473,9 +476,12 @@ Specified as: a structured data of type \descdata.
 \end{description}
 
 
-\subsubroutine{psb\_cd\_get\_local\_cols}{Get number of local cols}
+\subsubsection*{psb\_cd\_get\_local\_cols --- Get number of local cols}
+\addcontentsline{toc}{subsubsection}{psb\_cd\_get\_local\_cols }
 
-\syntax{nc = psb\_cd\_get\_local\_cols}{desc}
+\begin{verbatim}
+nc = psb_cd_get_local_cols(desc)
+\end{verbatim}
 
 \begin{description}
 \item[\bf On Entry]
@@ -497,9 +503,12 @@ Specified as: a structured data of type \descdata.
 \end{description}
 
 
-\subsubroutine{psb\_cd\_get\_global\_rows}{Get number of global rows}
+\subsubsection*{psb\_cd\_get\_global\_rows --- Get number of global rows}
+\addcontentsline{toc}{subsubsection}{psb\_cd\_get\_global\_rows }
 
-\syntax{nr = psb\_cd\_get\_global\_rows}{desc}
+\begin{verbatim}
+nr = psb_cd_get_global_rows(desc)
+\end{verbatim}
 
 \begin{description}
 \item[\bf On Entry]
@@ -516,9 +525,12 @@ Specified as: a structured data of type \descdata.
 \item[Function value] The number of global rows in the mesh
 \end{description}
 
-\subsubroutine{psb\_cd\_get\_global\_cols}{Get number of global cols}
+\subsubsection*{psb\_cd\_get\_global\_cols --- Get number of global cols}
+\addcontentsline{toc}{subsubsection}{psb\_cd\_get\_global\_cols }
 
-\syntax{nr = psb\_cd\_get\_global\_cols}{desc}
+\begin{verbatim}
+nr = psb_cd_get_global_cols(desc)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -537,7 +549,9 @@ Specified as: a structured data of type \descdata.
 
 
 \subsubroutine{psb\_cd\_get\_context}{Get communication context}
-\syntax{ictxt = psb\_cd\_get\_context}{desc}
+\begin{verbatim}
+ictxt = psb_cd_get_context(desc)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -555,9 +569,12 @@ Specified as: a structured data of type \descdata.
 \end{description}
 
 
-\subsubroutine{psb\_cd\_get\_large\_threshold}{Get threshold for
+\subsubsection*{psb\_cd\_get\_large\_threshold --- Get threshold for
   index mapping switch}
-\syntax{ith = psb\_cd\_get\_large\_threshold}{}
+\addcontentsline{toc}{subsubsection}{psb\_cd\_get\_large\_threshold}
+\begin{verbatim}
+ith = psb_cd_get_large_threshold()
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -568,9 +585,12 @@ Specified as: a structured data of type \descdata.
 
 
 
-\subsubroutine{psb\_cd\_set\_large\_threshold}{Set threshold for
+\subsubsection*{psb\_cd\_set\_large\_threshold --- Set threshold for
   index mapping switch}
-\syntax{call psb\_cd\_set\_large\_threshold}{ith}
+\addcontentsline{toc}{subsubsection}{psb\_cd\_set\_large\_threshold}
+\begin{verbatim}
+call psb_cd_set_large_threshold(ith)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -585,9 +605,13 @@ Note: the threshold value is only queried by the library at the time a
 call to \verb|psb_cdall| is executed, therefore changing the threshold
 has no effect on communication descriptors that have already been initialized.
 
-\subsubroutine{psb\_sp\_get\_nrows}{Get number of  rows in a sparse matrix}
+\subsubsection*{psb\_sp\_get\_nrows --- Get number of  rows in a sparse
+  matrix}
+\addcontentsline{toc}{subsubsection}{ psb\_sp\_get\_nrows}
 
-\syntax{nr = psb\_sp\_get\_nrows}{a}
+\begin{verbatim}
+nr = psb_sp_get_nrows(a)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -605,9 +629,13 @@ Specified as: a structured data of type \spdata.
 \end{description}
 
 
-\subsubroutine{psb\_sp\_get\_ncols}{Get number of  columns in a sparse matrix}
+\subsubsection*{psb\_sp\_get\_ncols --- Get number of  columns in a
+  sparse matrix}
+\addcontentsline{toc}{subsubsection}{psb\_sp\_get\_ncols}
 
-\syntax{nr = psb\_sp\_get\_ncols}{a}
+\begin{verbatim}
+nr = psb_sp_get_ncols(a)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -625,9 +653,13 @@ Specified as: a structured data of type \spdata.
 \end{description}
 
 
-\subsubroutine{psb\_sp\_get\_nnzeros}{Get number of nonzero elements in a sparse matrix}
+\subsubsection*{psb\_sp\_get\_nnzeros --- Get number of nonzero elements
+  in a sparse matrix}
+\addcontentsline{toc}{subsubsection}{psb\_sp\_get\_nnzeros}
 
-\syntax{nr = psb\_sp\_get\_nnzeros}{a}
+\begin{verbatim}
+nr = psb_sp_get_nnzeros(a)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -644,7 +676,7 @@ Specified as: a structured data of type \spdata.
 \item[Function value] The number of nonzero elements stored in sparse matrix \verb|a|.
 \end{description}
 
-\subsubsection*{Notes}
+{\par\noindent\bfseries Notes}
 \begin{enumerate}
 \item The function value is specific to the storage format of matrix
   \verb|a|; some storage formats employ padding, thus the returned
diff --git a/docs/pdf/error.tex b/docs/pdf/error.tex
index 49d89178..a7abe497 100644
--- a/docs/pdf/error.tex
+++ b/docs/pdf/error.tex
@@ -119,9 +119,13 @@ Aborting...
 \end{figure}
 
 
-\subroutine{psb\_errpush}{Pushes an error code onto the error stack}
+\clearpage\subsection*{psb\_errpush --- Pushes an error code onto the error
+  stack}
+\addcontentsline{toc}{subsection}{psb\_errpush}
 
-\syntax{call psb\_errpush}{err\_c, r\_name, i\_err, a\_err}
+\begin{verbatim}
+call psb_errpush(err_c, r_name, i_err, a_err)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -146,9 +150,13 @@ Type: {\bf optional}\\
 Specified as: a string.\\
 \end{description}
 
-\subroutine{psb\_error}{Prints the error stack content and aborts execution}
+\clearpage\subsection*{psb\_error --- Prints the error stack content and aborts
+  execution}
+\addcontentsline{toc}{subsection}{psb\_error}
 
-\syntax{call psb\_error}{icontxt}
+\begin{verbatim}
+call psb_error(icontxt)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -162,9 +170,13 @@ Specified as: an integer.
 
 
 
-\subroutine{psb\_set\_errverbosity}{Sets the verbosity of error messages.}
+\clearpage\subsection*{psb\_set\_errverbosity --- Sets the verbosity of error
+  messages.}
+\addcontentsline{toc}{subsection}{psb\_set\_errverbosity}
 
-\syntax{call psb\_set\_errverbosity}{v}
+\begin{verbatim}
+call psb_set_errverbosity(v)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -176,10 +188,14 @@ Intent: {\bf in}.\\
 Specified as: an integer.
 \end{description}
 
-\subroutine{psb\_set\_erraction}{Set the type of action to be taken
-  upon error condition.}
+\clearpage\subsection*{psb\_set\_erraction --- Set the type of action to be
+  taken  upon error condition.}
+\addcontentsline{toc}{subsection}{psb\_set\_erraction}
 
-\syntax{call psb\_set\_erraction}{err\_act}
+
+\begin{verbatim}
+call psb_set_erraction(err_act)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -194,9 +210,12 @@ Specified as: an integer. Possible values: \verb|psb_act_ret|,
 
 
 
-%% \subroutine{psb\_errcomm}{Error communication routine}
+%% \clearpage\subsection*{psb\_errcomm --- Error communication routine}
+%\addcontentsline{toc}{subsection}{psb\_errcomm}
 
-%% \syntax{call psb\_errcomm}{icontxt, err}
+\begin{verbatim}
+call psb_errcomm(icontxt, err)
+\end{verbatim}
 
 %% \begin{description}
 %% \item[\bf On Entry]
diff --git a/docs/pdf/methods.tex b/docs/pdf/methods.tex
index a529b6a1..9d271c3d 100644
--- a/docs/pdf/methods.tex
+++ b/docs/pdf/methods.tex
@@ -11,7 +11,9 @@ the module \verb|psb_krylov_mod|.
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-\subroutine{psb\_krylov \label{krylov}}{Krylov Methods Driver Routine}
+\clearpage\subsection*{psb\_krylov \label{krylov} --- Krylov Methods Driver
+      Routine}
+\addcontentsline{toc}{subsection}{krylov}
 
 This subroutine is a driver that provides a general interface for all
 the Krylov-Subspace family methods implemented in PSBLAS version 2. 
@@ -26,7 +28,10 @@ later). In the above formulae, $x_i$ is the tentative solution and
 $r_i=b-Ax_i$ the corresponding residual at the $i$-th iteration. 
 
 
-\syntax{call psb\_krylov}{method,a,prec,b,x,eps,desc\_a,info,itmax,iter,err,itrace,irst,istop,cond}
+\begin{verbatim}
+call psb_krylov(method,a,prec,b,x,eps,desc_a,info,&
+     & itmax,iter,err,itrace,irst,istop,cond)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -126,481 +131,6 @@ Intent: {\bf out}.\\
 An integer value; 0 means no error has been detected. 
 \end{description}
 
-%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% %
-%% %      CG
-%% %
-%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-%% \subroutine{psb\_cg \label{cg}}{CG Iterative Method}
-
-%% This subroutine implements the CG method with restarting. The
-%% stopping criterion is the normwise backward error, in the infinity
-%% norm, i.e. the iteration is stopped when 
-%% \[ \frac{\|r\|}{(\|A\|\|x\|+\|b\|)} < eps \]
-%% or
-%% \[ \frac{\|r_i\|}{\|b\|_2} < eps \]
-%% according to the value passed through the  istop argument (see later).
-
-
-%% \syntax{call psb\_cg}{a,prec,b,x,eps,desc\_a,info,itmax,iter,err,itrace,istop}
-
-%% \begin{description}
-%% \item[\bf On Entry]
-%% \item[a] the local portion of global sparse matrix
-%% $A$. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \spdata.
-%% \item[prec] The data structure containing the preconditioner.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \precdata.
-%% \item[b] The RHS vector. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[x] The initial guess. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[eps] The stopping tolerance. \\
-%% Scope: {\bf global} \\
-%% Type: {\bf required}\\
-%% Specified as: a real number. 
-%% \item[desc\_a] contains data structures for communications.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \descdata.
-%% \item[itmax]  The maximum number of iterations to perform.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Default: $itmax = 1000$.\\
-%% Specified as: an integer variable $itmax \ge 1$.
-%% \item[itrace] If $>0$  print out an informational message about
-%%   convergence  every $itrace$ iterations.\\ 
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% \item[istop]  An integer specifying the stopping criterion.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-
-%% \item[\bf On Return] 
-%% \item[x] The computed solution. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[iter]  The number of iterations performed.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Returned  as: an integer variable.
-%% \item[err]  The error estimate on exit.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Returned  as: a real number.
-%% \item[info] Error code.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required} \\
-%% An integer value; 0 means no error has been detected. 
-%% \end{description}
-%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% %
-%% %      CGS
-%% %
-%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-%% \subroutine{psb\_cgs \label{cgs}}{CGS Iterative Method}
-
-%% This subroutine implements the CGS method with restarting. The
-%% stopping criterion is the normwise backward error, in the infinity
-%% norm, i.e. the iteration is stopped when 
-%% \[ \frac{\|r\|}{(\|A\|\|x\|+\|b\|)} < eps \]
-%% or
-%% \[ \frac{\|r_i\|}{\|b\|_2} < eps \]
-%% according to the value passed through the  istop argument (see later).
-
-
-%% \syntax{call psb\_cgs}{a,prec,b,x,eps,desc\_a,info,itmax,iter,err,itrace,istop}
-
-%% \begin{description}
-%% \item[\bf On Entry]
-%% \item[a] the local portion of global sparse matrix
-%% $A$. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \spdata.
-%% \item[prec] The data structure containing the preconditioner.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \precdata.
-%% \item[b] The RHS vector. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[x] The initial guess. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[eps] The stopping tolerance. \\
-%% Scope: {\bf global} \\
-%% Type: {\bf required}\\
-%% Specified as: a real number. 
-%% \item[desc\_a] contains data structures for communications.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \descdata.
-%% \item[itmax]  The maximum number of iterations to perform.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Default: $itmax = 1000$.\\
-%% Specified as: an integer variable $itmax \ge 1$.
-%% \item[itrace]  If $>0$  print out an informational message about
-%%   convergence  every $itrace$ iterations.\\ 
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% \item[istop]  An integer specifying the stopping criterion.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-
-%% \item[\bf On Return] 
-%% \item[x] The computed solution. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[iter]  The number of iterations performed.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Returned  as: an integer variable.
-%% \item[err]  The error estimate on exit.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Returned  as: a real number.
-%% \item[info] Error code.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required} \\
-%% An integer value; 0 means no error has been detected. 
-%% \end{description}
-
-%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% %
-%% %      BiCG
-%% %
-%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% \subroutine{psb\_bicg \label{bicg}}{BiCG Iterative Method}
-
-%% This subroutine implements the BiCG method with restarting. The
-%% stopping criterion is the normwise backward error, in the infinity
-%% norm, i.e. the iteration is stopped when 
-%% \[ \frac{\|r\|}{(\|A\|\|x\|+\|b\|)} < eps \]
-%% or
-%% \[ \frac{\|r_i\|}{\|b\|_2} < eps \]
-%% according to the value passed through the  istop argument (see later).
-
-
-%% \syntax{call psb\_bicg}{a,prec,b,x,eps,desc\_a,info,itmax,iter,err,itrace,istop}
-
-%% \begin{description}
-%% \item[\bf On Entry]
-%% \item[a] the local portion of global sparse matrix
-%% $A$. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \spdata.
-%% \item[prec] The data structure containing the preconditioner.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \precdata.
-%% \item[b] The RHS vector. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[x] The initial guess. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[eps] The stopping tolerance. \\
-%% Scope: {\bf global} \\
-%% Type: {\bf required}\\
-%% Specified as: a real number. 
-%% \item[desc\_a] contains data structures for communications.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \descdata.
-%% \item[itmax]  The maximum number of iterations to perform.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Default: $itmax = 1000$.\\
-%% Specified as: an integer variable $itmax \ge 1$.
-%% \item[itrace] If $>0$  print out an informational message about
-%%   convergence  every $itrace$ iterations.\\ 
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% \item[istop]  An integer specifying the stopping criterion.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-
-%% \item[\bf On Return] 
-%% \item[x] The computed solution. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[iter]  The number of iterations performed.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Returned  as: an integer variable.
-%% \item[err]  The error estimate on exit.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Returned  as: a real number.
-%% \item[info] Error code.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required} \\
-%% An integer value; 0 means no error has been detected. 
-%% \end{description}
-
-
-%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% %
-%% %      BiCGSTAB
-%% %
-%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% \subroutine{psb\_bicgstab \label{bicgstab}}{BiCGSTAB Iterative Method}
-
-%% This subroutine implements the BiCGSTAB method with restarting. The
-%% stopping criterion is the normwise backward error, in the infinity
-%% norm, i.e. the iteration is stopped when 
-%% \[ \frac{\|r\|}{(\|A\|\|x\|+\|b\|)} < eps \]
-%% or
-%% \[ \frac{\|r_i\|}{\|b\|_2} < eps \]
-%% according to the value passed through the  istop argument (see later).
-
-
-%% \syntax{call psb\_bicgstab}{a,prec,b,x,eps,desc\_a,info,itmax,iter,err,itrace,istop}
-
-%% \begin{description}
-%% \item[\bf On Entry]
-%% \item[a] the local portion of global sparse matrix
-%% $A$. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \spdata.
-%% \item[prec] The data structure containing the preconditioner.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \precdata.
-%% \item[b] The RHS vector. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[x] The initial guess. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[eps] The stopping tolerance. \\
-%% Scope: {\bf global} \\
-%% Type: {\bf required}\\
-%% Specified as: a real number. 
-%% \item[desc\_a] contains data structures for communications.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \descdata.
-%% \item[itmax]  The maximum number of iterations to perform.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Default: $itmax = 1000$.\\
-%% Specified as: an integer variable $itmax \ge 1$.
-%% \item[itrace]  If $>0$  print out an informational message about
-%%   convergence  every $itrace$ iterations.\\ 
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% \item[istop]  An integer specifying the stopping criterion.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-
-%% \item[\bf On Return] 
-%% \item[x] The computed solution. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[iter]  The number of iterations performed.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Returned  as: an integer variable.
-%% \item[err]  The error estimate on exit.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Returned  as: a real number.
-%% \item[info] Error code.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required} \\
-%% An integer value; 0 means no error has been detected. 
-%% \end{description}
-
-
-%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% %
-%% %      BiCGSTAB(L)
-%% %
-%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% \subroutine{psb\_bicgstabl \label{bicgstabl}}{BiCGSTAB-$l$ Iterative Method}
-
-%% This subroutine implements the BiCGSTAB-$l$ method with restarting. The
-%% stopping criterion is the normwise backward error, in the infinity
-%% norm, i.e. the iteration is stopped when 
-%% \[ \frac{\|r\|}{(\|A\|\|x\|+\|b\|)} < eps \]
-%% or
-%% \[ \frac{\|r_i\|}{\|b\|_2} < eps \]
-%% according to the value passed through the  istop argument (see later).
-
-
-%% \syntax{call psb\_bicgstab}{a,prec,b,x,eps,desc\_a,info,itmax,iter,err,itrace,irst,istop}
-
-%% \begin{description}
-%% \item[\bf On Entry]
-%% \item[a] the local portion of global sparse matrix
-%% $A$. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \spdata.
-%% \item[prec] The data structure containing the preconditioner.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \precdata.
-%% \item[b] The RHS vector. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[x] The initial guess. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[eps] The stopping tolerance. \\
-%% Scope: {\bf global} \\
-%% Type: {\bf required}\\
-%% Specified as: a real number. 
-%% \item[desc\_a] contains data structures for communications.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \descdata.
-%% \item[itmax]  The maximum number of iterations to perform.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Default: $itmax = 1000$.\\
-%% Specified as: an integer variable $itmax \ge 1$.
-%% \item[itrace]  If $>0$  print out an informational message about
-%%   convergence  every $itrace$ iterations.\\ 
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% \item[irst]  An integer specifying the restarting iteration.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% \item[istop]  An integer specifying the stopping criterion.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-
-%% \item[\bf On Return] 
-%% \item[x] The computed solution. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[iter]  The number of iterations performed.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Returned  as: an integer variable.
-%% \item[err]  The error estimate on exit.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Returned  as: a real number.
-%% \item[info] Error code.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required} \\
-%% An integer value; 0 means no error has been detected. 
-%% \end{description}
-
-
-%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% %
-%% %      GMRES
-%% %
-%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% \subroutine{psb\_gmres \label{gmres}}{GMRES Iterative Method}
-
-%% This subroutine implements the GMRES method with restarting. The
-%% stopping criterion is the normwise backward error, in the infinity
-%% norm, i.e. the iteration is stopped when 
-%% \[ \frac{\|r\|}{(\|A\|\|x\|+\|b\|)} < eps \]
-%% or
-%% \[ \frac{\|r_i\|}{\|b\|_2} < eps \]
-%% according to the value passed through the  istop argument (see later).
-
-
-%% \syntax{call psb\_gmres}{a,prec,b,x,eps,desc\_a,info,itmax,iter,err,itrace,irst,istop}
-
-%% \begin{description}
-%% \item[\bf On Entry]
-%% \item[a] the local portion of global sparse matrix
-%% $A$. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \spdata.
-%% \item[prec] The data structure containing the preconditioner.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \precdata.
-%% \item[b] The RHS vector. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[x] The initial guess. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[eps] The stopping tolerance. \\
-%% Scope: {\bf global} \\
-%% Type: {\bf required}\\
-%% Specified as: a real number. 
-%% \item[desc\_a] contains data structures for communications.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a structured data of type \descdata.
-%% \item[itmax]  The maximum number of iterations to perform.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Default: $itmax = 1000$.\\
-%% Specified as: an integer variable $itmax \ge 1$.
-%% \item[itrace]  If $>0$  print out an informational message about
-%%   convergence  every $itrace$ iterations.\\ 
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% \item[irst]  An integer specifying the restart iteration.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% \item[istop]  An integer specifying the stopping criterion.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-
-%% \item[\bf On Return] 
-%% \item[x] The computed solution. \\
-%% Scope: {\bf local} \\
-%% Type: {\bf required}\\
-%% Specified as: a rank one array.
-%% \item[iter]  The number of iterations performed.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Returned  as: an integer variable.
-%% \item[err]  The error estimate on exit.\\
-%% Scope: {\bf global} \\
-%% Type: {\bf optional}\\
-%% Returned  as: a real number.
-%% \item[info] Error code.\\
-%% Scope: {\bf local} \\
-%% Type: {\bf required} \\
-%% An integer value; 0 means no error has been detected. 
-%% \end{description}
-
-
-
-
 
 %%% Local Variables: 
 %%% mode: latex
diff --git a/docs/pdf/penv.tex b/docs/pdf/penv.tex
index 9394a2fd..a233b9ec 100644
--- a/docs/pdf/penv.tex
+++ b/docs/pdf/penv.tex
@@ -2,9 +2,12 @@
 \section{Parallel environment routines}
 \label{sec:parenv}
 
-\subroutine{psb\_init}{Initializes PSBLAS parallel environment}
+\clearpage\subsection*{psb\_init --- Initializes PSBLAS parallel environment}
+\addcontentsline{toc}{subsection}{psb\_init}
 
-\syntax{call psb\_init}{icontxt, np}
+\begin{verbatim}
+call psb_init(icontxt, np)
+\end{verbatim}
 
 This subroutine initializes the PSBLAS parallel environment, defining
 a virtual parallel machine.
@@ -31,7 +34,7 @@ Specified as: an integer variable.
 \end{description}
 
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item A call to this routine must precede any other PSBLAS call. 
 \item It is an error to specify a value for $np$ greater than the
@@ -40,9 +43,13 @@ Specified as: an integer variable.
 \end{enumerate}
 
 
-\subroutine{psb\_info}{Return information about  PSBLAS parallel environment}
+\clearpage\subsection*{psb\_info --- Return information about  PSBLAS parallel
+  environment}
+\addcontentsline{toc}{subsection}{psb\_info}
 
-\syntax{call psb\_info}{icontxt, iam, np}
+\begin{verbatim}
+call psb_info(icontxt, iam, np)
+\end{verbatim}
 
 This subroutine returns information about  the PSBLAS parallel environment, defining
 a virtual parallel machine.
@@ -72,7 +79,7 @@ Specified as: an integer variable. \
 \end{description}
 
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item For processes in the virtual parallel machine  the identifier
   will satisfy $0 \le iam \le np-1$;
@@ -84,10 +91,13 @@ Specified as: an integer variable. \
 \end{enumerate}
 
 
-\subroutine{psb\_exit}{Exit from  PSBLAS parallel environment}
+\clearpage\subsection*{psb\_exit --- Exit from  PSBLAS parallel environment}
+\addcontentsline{toc}{subsection}{psb\_exit}
 
-\syntax{call psb\_exit}{icontxt}
-\syntax*{call psb\_exit}{icontxt,close}
+\begin{verbatim}
+call psb_exit(icontxt)
+call psb_exit(icontxt,close)
+\end{verbatim}
 
 This subroutine exits from the  PSBLAS parallel virtual  machine.
 \begin{description}
@@ -107,7 +117,7 @@ Intent: {\bf in}.\\
 Specified as: a logical  variable, default value: true.
 \end{description}
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item This routine may be called even if a previous call to
   \verb|psb_info| has returned with $iam=-1$; indeed, it it is the only
@@ -124,9 +134,12 @@ Specified as: a logical  variable, default value: true.
 \end{enumerate}
 
 
-\subroutine{psb\_get\_mpicomm}{Get the MPI communicator}
+\clearpage\subsection*{psb\_get\_mpicomm --- Get the MPI communicator}
+\addcontentsline{toc}{subsection}{psb\_get\_mpicomm}
 
-\syntax{call psb\_get\_mpicomm}{icontxt, icomm}
+\begin{verbatim}
+call psb_get_mpicomm(icontxt, icomm)
+\end{verbatim}
 
 This subroutine returns the MPI communicator associated with a PSBLAS context
 \begin{description}
@@ -149,9 +162,12 @@ Intent: {\bf out}.\\
 \end{description}
 
 
-\subroutine{psb\_get\_rank}{Get the MPI rank}
+\clearpage\subsection*{psb\_get\_rank --- Get the MPI rank}
+\addcontentsline{toc}{subsection}{psb\_get\_rank}
 
-\syntax{call psb\_get\_rank}{rank, icontxt, id}
+\begin{verbatim}
+call psb_get_rank(rank, icontxt, id)
+\end{verbatim}
 
 This subroutine returns the MPI rank of the  PSBLAS process $id$
 \begin{description}
@@ -181,9 +197,12 @@ Intent: {\bf out}.\\
 
 
 
-\subroutine{psb\_wtime}{Wall clock timing}
+\clearpage\subsection*{psb\_wtime --- Wall clock timing}
+\addcontentsline{toc}{subsection}{psb\_wtime}
 
-\syntax{time = psb\_wtime}{}
+\begin{verbatim}
+time = psb_wtime()
+\end{verbatim}
 
 This function returns a wall clock timer. The resolution of the timer
 is dependent on the underlying parallel environment implementation.
@@ -195,9 +214,13 @@ Returned  as: a  \verb|real(psb_dpk_)|  variable.
 \end{description}
 
 
-\subroutine{psb\_barrier}{Sinchronization point  parallel environment}
+\clearpage\subsection*{psb\_barrier --- Sinchronization point  parallel
+  environment}
+\addcontentsline{toc}{subsection}{psb\_barrier}
 
-\syntax{call psb\_barrier}{icontxt}
+\begin{verbatim}
+call psb_barrier(icontxt)
+\end{verbatim}
 
 This subroutine acts as an explicit synchronization point for  the  PSBLAS
 parallel virtual  machine. 
@@ -213,9 +236,12 @@ Specified as: an integer variable.
 \end{description}
 
 
-\subroutine{psb\_abort}{Abort a computation}
+\clearpage\subsection*{psb\_abort --- Abort a computation}
+\addcontentsline{toc}{subsection}{psb\_abort}
 
-\syntax{call psb\_abort}{icontxt}
+\begin{verbatim}
+call psb_abort(icontxt)
+\end{verbatim}
 
 This subroutine aborts computation on the parallel virtual machine. 
 \begin{description}
@@ -233,9 +259,12 @@ Specified as: an integer variable.
 
 
 
-\subroutine{psb\_bcast}{Broadcast data}
+\clearpage\subsection*{psb\_bcast --- Broadcast data}
+\addcontentsline{toc}{subsection}{psb\_bcast}
 
-\syntax{call psb\_bcast}{icontxt, dat, root}
+\begin{verbatim}
+call psb_bcast(icontxt, dat, root)
+\end{verbatim}
 
 This subroutine implements a broadcast operation based on the
 underlying communication library. 
@@ -276,9 +305,12 @@ Type, kind, rank and size must agree on all processes.
 \end{description}
 
 
-\subroutine{psb\_sum}{Global sum}
+\clearpage\subsection*{psb\_sum --- Global sum}
+\addcontentsline{toc}{subsection}{psb\_sum}
 
-\syntax{call psb\_sum}{icontxt, dat, root}
+\begin{verbatim}
+call psb_sum(icontxt, dat, root)
+\end{verbatim}
 
 This subroutine implements a sum reduction  operation based on the
 underlying communication library. 
@@ -318,7 +350,7 @@ scalar, or a rank 1 or 2 array. \\
 Type, kind, rank and size must agree on all processes.
 \end{description}
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item The \verb|dat| argument is both input and output, and its
   value may be changed even on processes different from the final
@@ -327,9 +359,12 @@ Type, kind, rank and size must agree on all processes.
 
 
 
-\subroutine{psb\_max}{Global maximum}
+\clearpage\subsection*{psb\_max --- Global maximum}
+\addcontentsline{toc}{subsection}{psb\_max}
 
-\syntax{call psb\_max}{icontxt, dat, root}
+\begin{verbatim}
+call psb_max(icontxt, dat, root)
+\end{verbatim}
 
 This subroutine implements a maximum valuereduction
 operation based on the underlying communication library. 
@@ -370,16 +405,19 @@ Type, kind, rank and size must agree on all processes.
 \end{description}
 
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item The \verb|dat| argument is both input and output, and its
   value may be changed even on processes different from the final
   result destination.
 \end{enumerate}
 
-\subroutine{psb\_min}{Global minimum}
+\clearpage\subsection*{psb\_min --- Global minimum}
+\addcontentsline{toc}{subsection}{psb\_min}
 
-\syntax{call psb\_min}{icontxt, dat, root}
+\begin{verbatim}
+call psb_min(icontxt, dat, root)
+\end{verbatim}
 
 This subroutine implements a minimum value reduction
 operation based on the underlying communication library. 
@@ -420,16 +458,19 @@ Type, kind, rank and size must agree on all processes.
 \end{description}
 
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item The \verb|dat| argument is both input and output, and its
   value may be changed even on processes different from the final
   result destination.
 \end{enumerate}
 
-\subroutine{psb\_amx}{Global maximum absolute value}
+\clearpage\subsection*{psb\_amx --- Global maximum absolute value}
+\addcontentsline{toc}{subsection}{psb\_amx}
 
-\syntax{call psb\_amx}{icontxt, dat, root}
+\begin{verbatim}
+call psb_amx(icontxt, dat, root)
+\end{verbatim}
 
 This subroutine implements a maximum absolute value reduction
 operation based on the underlying communication library. 
@@ -470,16 +511,19 @@ Type, kind, rank and size must agree on all processes.
 \end{description}
 
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item The \verb|dat| argument is both input and output, and its
   value may be changed even on processes different from the final
   result destination.
 \end{enumerate}
 
-\subroutine{psb\_amn}{Global minimum absolute value}
+\clearpage\subsection*{psb\_amn --- Global minimum absolute value}
+\addcontentsline{toc}{subsection}{psb\_amn}
 
-\syntax{call psb\_amn}{icontxt, dat, root}
+\begin{verbatim}
+call psb_amn(icontxt, dat, root)
+\end{verbatim}
 
 This subroutine implements a minimum absolute value reduction
 operation based on the underlying communication library. 
@@ -520,7 +564,7 @@ Type, kind, rank and size must agree on all processes.
 \end{description}
 
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item The \verb|dat| argument is both input and output, and its
   value may be changed even on processes different from the final
@@ -528,9 +572,12 @@ Type, kind, rank and size must agree on all processes.
 \end{enumerate}
 
 
-\subroutine{psb\_snd}{Send data}
+\clearpage\subsection*{psb\_snd --- Send data}
+\addcontentsline{toc}{subsection}{psb\_snd}
 
-\syntax{call psb\_snd}{icontxt, dat, dst, m}
+\begin{verbatim}
+call psb_snd(icontxt, dat, dst, m)
+\end{verbatim}
 
 This subroutine sends a packet of data to a destination.
 \begin{description}
@@ -570,16 +617,19 @@ same value on sending and receiving processes.
 \item[\bf On Return]
 \end{description}
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item This subroutine implies a synchronization, but only between the
   calling process and the destination  process $dst$.
 \end{enumerate}
 
 
-\subroutine{psb\_rcv}{Receive data}
+\clearpage\subsection*{psb\_rcv --- Receive data}
+\addcontentsline{toc}{subsection}{psb\_rcv}
 
-\syntax{call psb\_rcv}{icontxt, dat, src, m}
+\begin{verbatim}
+call psb_rcv(icontxt, dat, src, m)
+\end{verbatim}
 
 This subroutine receives a packet of data to a destination.
 \begin{description}
@@ -619,7 +669,7 @@ Type, kind and  rank must agree on sender and receiver process; if $m$ is
 not specified, size must agree as well. 
 \end{description}
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item This subroutine implies a synchronization, but only between the
   calling process and the source  process $src$.
diff --git a/docs/pdf/precs.tex b/docs/pdf/precs.tex
index df922810..c41247d6 100644
--- a/docs/pdf/precs.tex
+++ b/docs/pdf/precs.tex
@@ -24,9 +24,12 @@ module  \verb|psb_prec_mod|.
 
 
 
-\subroutine{psb\_precinit}{Initialize a  preconditioner}
+\clearpage\subsection*{psb\_precinit --- Initialize a  preconditioner}
+\addcontentsline{toc}{subsection}{psb\_precinit}
 
-\syntax{call psb\_precinit}{prec, ptype, info}
+\begin{verbatim}
+call psb_precinit(prec, ptype, info)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -57,7 +60,7 @@ Type: {\bf required}\\
 Intent: {\bf out}.\\
 Error code: if no error, 0 is returned.
 \end{description}
-\subsection*{Usage Notes}
+{\par\noindent\large\bfseries Notes}
 %% The PSBLAS 2.0 contains a number of preconditioners, ranging from a
 %% simple diagonal scaling to 2-level domain decomposition. These
 %% preconditioners may use the SuperLU or the UMFPACK software, if
@@ -78,9 +81,12 @@ $ptype$ string as follows\footnote{The string is case-insensitive}:
 \end{description}
 
 
-\subroutine{psb\_precbld}{Builds a preconditioner}
+\clearpage\subsection*{psb\_precbld --- Builds a preconditioner}
+\addcontentsline{toc}{subsection}{psb\_precbld}
 
-\syntax{call psb\_precbld}{a, desc\_a, prec, info}
+\begin{verbatim}
+call psb_precbld(a, desc_a, prec, info)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -123,10 +129,13 @@ An integer value; 0 means no error has been detected.
 
 
 
-\subroutine{psb\_precaply}{Preconditioner application routine}
+\clearpage\subsection*{psb\_precaply --- Preconditioner application routine}
+\addcontentsline{toc}{subsection}{psb\_precaply}
 
-\syntax{call psb\_precaply}{prec,x,y,desc\_a,info,trans,work}
-\syntax*{call psb\_precaply}{prec,x,desc\_a,info,trans}
+\begin{verbatim}
+call psb_precaply(prec,x,y,desc_a,info,trans,work)
+call psb_precaply(prec,x,desc_a,info,trans)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -174,10 +183,14 @@ An integer value; 0 means no error has been detected.
 
 
 
-\subroutine{psb\_precdescr}{Prints a description of current preconditioner}
+\clearpage\subsection*{psb\_precdescr --- Prints a description of current
+  preconditioner}
+\addcontentsline{toc}{subsection}{psb\_precdescr}
 
-\syntax{call psb\_precdescr}{prec}
-\syntax*{call psb\_precdescr}{prec, iout}
+\begin{verbatim}
+call psb_precdescr(prec)
+call psb_precdescr(prec, iout)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
diff --git a/docs/pdf/psbrout.tex b/docs/pdf/psbrout.tex
index c864256a..03c29c23 100644
--- a/docs/pdf/psbrout.tex
+++ b/docs/pdf/psbrout.tex
@@ -5,7 +5,8 @@
 %      DENSE MATRIX SUM
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\subroutine{psb\_geaxpby}{General Dense Matrix Sum}
+\clearpage\subsection*{psb\_geaxpby --- General Dense Matrix Sum}
+\addcontentsline{toc}{subsection}{psb\_geaxpby}
 
 This subroutine is an interface to the computational kernel for
 dense matrix sum:
@@ -16,7 +17,9 @@ dense matrix sum:
 %% \item[$y$] represents the global dense submatrix $y_{:, :}$
 %% \end{description}
 
-\syntax{call psb\_geaxpby}{alpha, x, beta, y, desc\_a, info}
+\begin{verbatim}
+call psb_geaxpby(alpha, x, beta, y, desc_a, info)
+\end{verbatim}
 %% \syntax*{call psb\_geaxpby}{alpha, x, beta, y, desc\_a, info, n, jx, jy}
 
 %( calculating y <- alpha*x+beta*y )
@@ -111,7 +114,8 @@ An integer value; 0 means no error has been detected.
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-\subroutine{psb\_gedot}{Dot Product}
+\clearpage\subsection*{psb\_gedot --- Dot Product}
+\addcontentsline{toc}{subsection}{psb\_gedot}
 
 This function computes dot product between two vectors $x$ and
 $y$.\\
@@ -126,7 +130,9 @@ Else if $x$ and $y$ are complex vectors then it computes dot-product as:
 %% \item[$y$] represents the global subvector $y_{:,jy}$
 %% \end{description}
 
-\syntax{psb\_gedot}{x, y, desc\_a, info}
+\begin{verbatim}
+psb_gedot(x, y, desc_a, info)
+\end{verbatim}
 %% \syntax*{psb\_gedot}{x, y, desc\_a, info, jx, jy}
 \begin{table}[h]
 \begin{center}
@@ -200,7 +206,8 @@ An integer value; 0 means no error has been detected.
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-\subroutine{psb\_gedots}{Generalized Dot Product}
+\clearpage\subsection*{psb\_gedots --- Generalized Dot Product}
+\addcontentsline{toc}{subsection}{psb\_gedots}
 
 This subroutine computes a series of  dot products among the columns of
 two dense matrices  $x$ and $y$: 
@@ -210,7 +217,9 @@ usual convention applies, i.e. the conjugate transpose of $x$ is
 used. If $x$ and $y$ are of rank one, then $res$ is a scalar, else it
 is a rank one array. 
 
-\syntax{call psb\_gedots}{res, x, y, desc\_a, info}
+\begin{verbatim}
+call psb_gedots(res, x, y, desc_a, info)
+\end{verbatim}
 \begin{table}[h]
 \begin{center}
 \begin{tabular}{ll}
@@ -271,7 +280,8 @@ An integer value; 0 means no error has been detected.
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
-\subroutine{psb\_geamax}{Infinity-Norm of Vector}    
+\clearpage\subsection*{psb\_geamax --- Infinity-Norm of Vector}    
+\addcontentsline{toc}{subsection}{psb\_geamax}
 
 This function computes 
  the infinity-norm of a vector $x$.\\
@@ -285,7 +295,9 @@ else if $x$ is a complex vector then it computes infinity-norm  as:
 %% \item[$x$] represents the global subvector $x_{:,jx}$
 %% \end{description}
 
-\syntax{psb\_geamax}{x, desc\_a, info}
+\begin{verbatim}
+psb_geamax(x, desc_a, info)
+\end{verbatim}
 %% \syntax*{psb\_geamax}{x, desc\_a, info, jx}
 
 \begin{table}[h]
@@ -346,13 +358,17 @@ An integer value; 0 means no error has been detected.
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-\subroutine{psb\_geamaxs}{Generalized Infinity Norm}
+\clearpage\subsection*{psb\_geamaxs --- Generalized Infinity Norm}
+\addcontentsline{toc}{subsection}{psb\_geamaxs}
 
 This subroutine computes a series of  infinity norms on the columns of
 a  dense matrix  $x$: 
 \[ res(i) \leftarrow \max_k |x(k,i)| \]
 
-\syntax{call psb\_geamaxs}{res, x, desc\_a, info}
+\begin{verbatim}
+call psb_geamaxs(res, x, desc_a, info)
+\end{verbatim}
+
 \begin{table}[h]
 \begin{center}
 \begin{tabular}{lll}
@@ -404,7 +420,8 @@ An integer value; 0 means no error has been detected.
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
-\subroutine{psb\_geasum}{1-Norm of Vector}    
+\clearpage\subsection*{psb\_geasum --- 1-Norm of Vector}    
+\addcontentsline{toc}{subsection}{psb\_geasum}
 
 This function computes the 1-norm of a vector $x$.\\
 If $x$ is a real vector
@@ -414,7 +431,9 @@ else if $x$ is a  vector then it computes 1-norm  as:
 \[ asum \leftarrow \|re(x)\|_1 + \|im(x)\|_1\]
 
 
-\syntax{psb\_geasum}{x, desc\_a, info}
+\begin{verbatim}
+psb_geasum(x, desc_a, info)
+\end{verbatim}
 
 \begin{table}[h]
 \begin{center}
@@ -463,7 +482,8 @@ An integer value; 0 means no error has been detected.
 \end{description}
 
 
-\subroutine{psb\_geasums}{Generalized 1-Norm of Vector}    
+\clearpage\subsection*{psb\_geasums --- Generalized 1-Norm of Vector}    
+\addcontentsline{toc}{subsection}{psb\_geasums}
 
 This subroutine computes a series of  1-norms on the columns of
 a  dense matrix  $x$: 
@@ -476,7 +496,9 @@ else if $x$ is a complex vector then it computes 1-norm  as:
 \[ res(i) \leftarrow \|re(x)\|_1 + \|im(x)\|_1\]
 
 
-\syntax{call psb\_geasums}{res, x, desc\_a, info}
+\begin{verbatim}
+call psb_geasums(res, x, desc_a, info)
+\end{verbatim}
 
 \begin{table}[h]
 \begin{center}
@@ -563,8 +585,11 @@ Long Precision Real&Long Precision Complex & psb\_genrm2 \\
 \caption{Data types\label{tab:f90nrm2}}
 \end{table}
 
-\syntax{psb\_genrm2}{x, desc\_a, info}
+\begin{verbatim}
+psb_genrm2(x, desc_a, info)
+\end{verbatim}
 %% \syntax*{psb\_genrm2}{x, desc\_a, info, jx}
+
 \begin{description}
 \item[Type:] Synchronous.
 \item[\bf On Entry]
@@ -604,7 +629,8 @@ An integer value; 0 means no error has been detected.
 
 
 
-\subroutine{psb\_genrm2s}{Generalized 1-Norm of Vector}    
+\clearpage\subsection*{psb\_genrm2s --- Generalized 1-Norm of Vector}    
+\addcontentsline{toc}{subsection}{psb\_genrm2s}
 
 This subroutine computes a series of  1-norms on the columns of
 a  dense matrix  $x$: 
@@ -617,7 +643,9 @@ else if $x$ is a complex vector then it computes 1-norm  as:
 \[ res(i) \leftarrow \sqrt{x^H x}\]
 
 
-\syntax{call psb\_genrm2s}{res, x, desc\_a, info}
+\begin{verbatim}
+call psb_genrm2s(res, x, desc_a, info)
+\end{verbatim}
 
 \begin{table}[h]
 \begin{center}
@@ -675,7 +703,8 @@ An integer value; 0 means no error has been detected.
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
-\subroutine{psb\_spnrmi}{Infinity Norm of Sparse Matrix}    
+\clearpage\subsection*{psb\_spnrmi --- Infinity Norm of Sparse Matrix}    
+\addcontentsline{toc}{subsection}{psb\_spnrmi}
 
 This function computes the infinity-norm of a matrix $A$:\\
 
@@ -701,7 +730,9 @@ Long Precision Complex & psb\_spnrmi \\
 \caption{Data types\label{tab:f90nrmi}}
 \end{table}
 
-\syntax{psb\_spnrmi}{A, desc\_a, info}
+\begin{verbatim}
+psb_spnrmi(A, desc_a, info)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -736,7 +767,8 @@ An integer value; 0 means no error has been detected.
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
-\subroutine{psb\_spmm}{Sparse Matrix by Dense Matrix Product}   
+\clearpage\subsection*{psb\_spmm --- Sparse Matrix by Dense Matrix Product}   
+\addcontentsline{toc}{subsection}{psb\_spmm}
 
 This subroutine computes the Sparse Matrix by Dense Matrix Product:
 
@@ -777,9 +809,11 @@ Long Precision Complex & psb\_spmm \\
 \caption{Data types\label{tab:f90spmm}}
 \end{table}
 
-\syntax{call psb\_spmm}{alpha, a, x, beta, y, desc\_a, info}
-\syntax*{call psb\_spmm}{alpha, a, x, beta, y,desc\_a, info,
-trans, work} 
+\begin{verbatim}
+call psb_spmm(alpha, a, x, beta, y, desc_a, info)
+call psb_spmm(alpha, a, x, beta, y,desc_a, info, &
+             & trans, work)
+\end{verbatim} 
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -886,7 +920,8 @@ An integer value; 0 means no error has been detected.
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
-\subroutine{psb\_spsm}{Triangular System Solve}   
+\clearpage\subsection*{psb\_spsm --- Triangular System Solve}   
+\addcontentsline{toc}{subsection}{psb\_spsm}
 
 This subroutine computes the Triangular System Solve:
 
@@ -912,9 +947,11 @@ where:
 \item[$P_r, P_c$] are the permutation matrices.
 \end{description}
 
-\syntax{call psb\_spsm}{alpha, t, x, beta, y, desc\_a, info} 
-\syntax*{call psb\_spsm}{alpha, t, x, beta, y, desc\_a, info,
-trans, unit, choice, diag, work} 
+\begin{verbatim}
+call psb_spsm(alpha, t, x, beta, y, desc_a, info)
+call psb_spsm(alpha, t, x, beta, y, desc_a, info,&
+             & trans, unit, choice, diag, work)
+\end{verbatim} 
 
 \begin{table}[h]
 \begin{center}
diff --git a/docs/pdf/toolsrout.tex b/docs/pdf/toolsrout.tex
index 8e4808ae..0ef5c9b4 100644
--- a/docs/pdf/toolsrout.tex
+++ b/docs/pdf/toolsrout.tex
@@ -5,17 +5,20 @@
 %
 %%   psb_cdall %%
 %
-\subroutine{psb\_cdall}{Allocates a communication descriptor}
+\subsection*{psb\_cdall --- Allocates a communication descriptor}
+\addcontentsline{toc}{subsection}{psb\_cdall}
 
-\syntax{call psb\_cdall}{icontxt, desc\_a, info,mg=mg,parts=parts}
-\syntax*{call psb\_cdall}{icontxt, desc\_a, info,vg=vg,flag=flag}
-\syntax*{call psb\_cdall}{icontxt, desc\_a, info,vl=vl}
-\syntax*{call psb\_cdall}{icontxt, desc\_a, info,nl=nl}
-\syntax*{call psb\_cdall}{icontxt, desc\_a, info,mg=mg,repl=.true.}
+\begin{verbatim}
+call psb_cdall(icontxt, desc_a, info,mg=mg,parts=parts)
+call psb_cdall(icontxt, desc_a, info,vg=vg,flag=flag)
+call psb_cdall(icontxt, desc_a, info,vl=vl)
+call psb_cdall(icontxt, desc_a, info,nl=nl)
+call psb_cdall(icontxt, desc_a, info,mg=mg,repl=.true.)
+\end{verbatim}
 
 This subroutine initializes the communication descriptor associated
 with an index space. Exactly one of the  optional arguments
-\verb|parts|, \verb|vg|, \verb|vl| or \verb|nl| 
+\verb|parts|, \verb|vg|, \verb|vl|, \verb|nl|  or \verb|repl| 
 must be specified, thereby choosing
 the specific initialization strategy:
 \begin{description}
@@ -82,7 +85,7 @@ Intent: {\bf out}.\\
 An integer value; 0 means no error has been detected. 
 \end{description}
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item Exactly one of the optional arguments  \verb|parts|, \verb|vg|,
   \verb|vl|, \verb|nl|  must be specified, thereby choosing the
@@ -140,9 +143,12 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_cdins %%
 %
-\subroutine{psb\_cdins}{Communication descriptor insert routine}
+\clearpage\subsection*{psb\_cdins --- Communication descriptor insert routine}
+\addcontentsline{toc}{subsection}{psb\_cdins}
 
-\syntax{call psb\_cdins}{nz, ia, ja, desc\_a, info}
+\begin{verbatim}
+call psb_cdins(nz, ia, ja, desc_a, info)
+\end{verbatim}
 
 This subroutine examines the edges of the graph associated with the
 discretization mesh (and isomorphic to the sparsity pattern of a
@@ -190,7 +196,7 @@ Type: {\bf required} \\
 Intent: {\bf out}.\\
 An integer value; 0 means no error has been detected. 
 \end{description}
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item This routine may only be called if the descriptor is in the
   build state;
@@ -204,9 +210,12 @@ nor the end vertex belong to the current process.
 %
 %%   psb_cdasb %%
 %
-\subroutine{psb\_cdasb}{Communication descriptor assembly routine}
+\clearpage\subsection*{psb\_cdasb --- Communication descriptor assembly routine}
+\addcontentsline{toc}{subsection}{psb\_cdasb}
 
-\syntax{call psb\_cdasb}{desc\_a, info}
+\begin{verbatim}
+call psb_cdasb(desc_a, info)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -232,7 +241,7 @@ Intent: {\bf out}.\\
 An integer value; 0 means no error has been detected. 
 %\item[arg] 
 \end{description}
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item On exit from this routine the descriptor is in the assembled
   state. 
@@ -243,9 +252,12 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_cdcpy %%
 %
-\subroutine{psb\_cdcpy}{Copies a communication descriptor}
+\clearpage\subsection*{psb\_cdcpy --- Copies a communication descriptor}
+\addcontentsline{toc}{subsection}{psb\_cdcpy}
 
-\syntax{call psb\_cdcpy}{desc\_in, desc\_out, info}
+\begin{verbatim}
+call psb_cdcpy(desc_in, desc_out, info)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -276,9 +288,12 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_cdfree %%
 %
-\subroutine{psb\_cdfree}{Frees a communication descriptor}
+\clearpage\subsection*{psb\_cdfree --- Frees a communication descriptor}
+\addcontentsline{toc}{subsection}{psb\_cdfree}
 
-\syntax{call psb\_cdfree}{desc\_a, info}
+\begin{verbatim}
+call psb_cdfree(desc_a, info)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -304,9 +319,13 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_cdcpy %%
 %
-\subroutine{psb\_cdbldext}{Build an extended  communication descriptor}
+\clearpage\subsection*{psb\_cdbldext --- Build an extended  communication
+  descriptor}
+\addcontentsline{toc}{subsection}{psb\_cdbldext}
 
-\syntax{call psb\_cdbldext}{a,desc\_a,nl,desc\_out, info, extype}
+\begin{verbatim}
+call psb_cdbldext(a,desc_a,nl,desc_out, info, extype)
+\end{verbatim}
 
 This subroutine builds an extended communication descriptor, based on
 the input descriptor \verb|desc_a| and on the stencil specified
@@ -352,7 +371,7 @@ Intent: {\bf out}.\\
 An integer value; 0 means no error has been detected. 
 \end{description}
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item Specifying \verb|psb_ovt_xhal_| for the \verb|extype| argument
   the user will obtain a descriptor for a domain partition in which
@@ -370,7 +389,9 @@ An integer value; 0 means no error has been detected.
 %% %
 %% %%   psb_cdren %%
 %% %
-%% \subroutine{psb\_cdren}{Applies a renumeration to a communication descriptor}
+%% \subsection*{psb\_cdren --- Applies a renumeration to a
+%% communication descriptor}
+%% \addcontentsline{toc}{subsection}{psb\_cdren}
 
 %% \syntax{call psb\_cdren}{trans, iperm, desc\_a, info}
 
@@ -405,7 +426,8 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_descprt %%
 %
-%% \subroutine{psb\_cdprt}{Prints a descriptor}
+%% \subsection*{psb\_cdprt --- Prints a descriptor}
+%%\addcontentsline{toc}{subsection}{psb\_cdprt}
 
 %% \syntax{call psb\_cdprt}{iout, desc\_a, glob, short}
 
@@ -434,9 +456,12 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_spalloc %%
 %
-\subroutine{psb\_spall}{Allocates a sparse matrix}
+\clearpage\subsection*{psb\_spall --- Allocates a sparse matrix}
+\addcontentsline{toc}{subsection}{psb\_spall}
 
-\syntax{call psb\_spall}{a, desc\_a, info, nnz}
+\begin{verbatim}
+call psb_spall(a, desc_a, info, nnz)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -467,7 +492,7 @@ Type: {\bf required} \\
 Intent: {\bf out}.\\
 An integer value; 0 means no error has been detected. 
 \end{description}
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item On exit from this routine the sparse matrix  is in the build
   state.
@@ -483,9 +508,13 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_spins %%
 %
-\subroutine{psb\_spins}{Insert a cloud of elements into a sparse matrix}
+\clearpage\subsection*{psb\_spins --- Insert a cloud of elements into a sparse
+  matrix}
+\addcontentsline{toc}{subsection}{psb\_spins}
 
-\syntax{call psb\_spins}{nz, ia, ja, val, a, desc\_a, info}
+\begin{verbatim}
+call psb_spins(nz, ia, ja, val, a, desc_a, info)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -545,7 +574,7 @@ Intent: {\bf out}.\\
 An integer value; 0 means no error has been detected. 
 \end{description}
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item On entry to this routine the descriptor may be in either the
   build or assembled state.
@@ -569,9 +598,12 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_spasb %%
 %
-\subroutine{psb\_spasb}{Sparse matrix assembly routine}
+\clearpage\subsection*{psb\_spasb --- Sparse matrix assembly routine}
+\addcontentsline{toc}{subsection}{psb\_spasb}
 
-\syntax{call psb\_spasb}{a, desc\_a, info, afmt, upd, dupl}
+\begin{verbatim}
+call psb_spasb(a, desc_a, info, afmt, upd, dupl)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -613,7 +645,7 @@ Intent: {\bf out}.\\
 An integer value; 0 means no error has been detected. 
 \end{description}
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item On entry to this routine the descriptor must  be in  the
   assembled state, i.e. \verb|psb_cdasb| must already have been called.
@@ -634,7 +666,9 @@ An integer value; 0 means no error has been detected.
 %% %
 %% %%   psb_spcnv %%
 %% %
-%% \subroutine{psb\_spcnv}{Converts a sparse matrix storage format}
+%% \subsection*{psb\_spcnv --- Converts a sparse matrix storage
+%% format}
+%%\addcontentsline{toc}{subsection}{psb\_spcnv}
 
 %% \syntax{call psb\_spcnv}{a, b, desc\_a, info}
 
@@ -667,9 +701,12 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_spfree %%
 %
-\subroutine{psb\_spfree}{Frees a sparse matrix}
+\clearpage\subsection*{psb\_spfree --- Frees a sparse matrix}
+\addcontentsline{toc}{subsection}{psb\_spfree}
 
-\syntax{call psb\_spfree}{a, desc\_a, info}
+\begin{verbatim}
+call psb_spfree(a, desc_a, info)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -701,9 +738,13 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_sprn %%
 %
-\subroutine{psb\_sprn}{Reinit sparse matrix structure for psblas routines.}
+\clearpage\subsection*{psb\_sprn --- Reinit sparse matrix structure for psblas
+  routines.}
+\addcontentsline{toc}{subsection}{psb\_sprn}
 
-\syntax{call psb\_sprn}{a, decsc\_a, info, clear}
+\begin{verbatim}
+call psb_sprn(a, decsc_a, info, clear)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -733,7 +774,7 @@ Type: {\bf required} \\
 Intent: {\bf out}.\\
 An integer value; 0 means no error has been detected. 
 \end{description}
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item On exit from this routine the sparse matrix is in the update
   state. 
@@ -741,7 +782,8 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_spupdate %%
 %
-%% \subroutine{psb\_spupdate}{Updates a sparse matrix.}
+%% \subsection*{psb\_spupdate --- Updates a sparse matrix.}
+%%\addcontentsline{toc}{subsection}{psb\_spupdate}
 
 %% \syntax{call psb\_spupdate}{a, ia, ja, blck, desc\_a, info, ix, jx, updflag}
 
@@ -755,7 +797,9 @@ An integer value; 0 means no error has been detected.
 %% %
 %% %%   psb_csrp %%
 %% %
-%% \subroutine{psb\_csrp}{Applies a right permutation to a sparse matrix}
+%% \subsection*{psb\_csrp --- Applies a right permutation to a sparse
+%% matrix}
+%%\addcontentsline{toc}{subsection}{psb\_csrp}
 
 %% \syntax{call psb\_csrp}{trans, iperm, a, info}
 
@@ -785,9 +829,12 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_alloc %%
 %
-\subroutine{psb\_geall}{Allocates a dense matrix}
+\clearpage\subsection*{psb\_geall --- Allocates a dense matrix}
+\addcontentsline{toc}{subsection}{psb\_geall}
 
-\syntax{call psb\_geall}{x, desc\_a, info, n, lb}
+\begin{verbatim}
+call psb_geall(x, desc_a, info, n, lb)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -830,9 +877,12 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_ins %%
 %
-\subroutine{psb\_geins}{Dense matrix insertion routine}
+\clearpage\subsection*{psb\_geins --- Dense matrix insertion routine}
+\addcontentsline{toc}{subsection}{psb\_geins}
 
-\syntax{call psb\_geins}{m, irw, val, x, desc\_a, info,dupl}
+\begin{verbatim}
+call psb_geins(m, irw, val, x, desc_a, info,dupl)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -883,7 +933,7 @@ Intent: {\bf out}.\\
 An integer value; 0 means no error has been detected. 
 \end{description}
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item Dense vectors/matrices do not have an associated state;
 \item Duplicate entries are either overwritten or added, there is no
@@ -894,9 +944,12 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_asb %%
 %
-\subroutine{psb\_geasb}{Assembly a dense matrix}
+\clearpage\subsection*{psb\_geasb --- Assembly a dense matrix}
+\addcontentsline{toc}{subsection}{psb\_geasb}
 
-\syntax{call psb\_geasb}{x, desc\_a, info}
+\begin{verbatim}
+call psb_geasb(x, desc_a, info)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -925,9 +978,12 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_free %%
 %
-\subroutine{psb\_gefree}{Frees a dense matrix}
+\clearpage\subsection*{psb\_gefree --- Frees a dense matrix}
+\addcontentsline{toc}{subsection}{psb\_gefree}
 
-\syntax{call psb\_gefree}{x, desc\_a, info}
+\begin{verbatim}
+call psb_gefree(x, desc_a, info)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Synchronous.
@@ -960,9 +1016,13 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_gelp %%
 %
-\subroutine{psb\_gelp}{Applies a left permutation to a dense matrix}
+\clearpage\subsection*{psb\_gelp --- Applies a left permutation to a dense
+  matrix}
+\addcontentsline{toc}{subsection}{psb\_gelp}
 
-\syntax{call psb\_gelp}{trans, iperm, x, info}
+\begin{verbatim}
+call psb_gelp(trans, iperm, x, info)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -997,10 +1057,14 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_glob_to_loc %%
 %
-\subroutine{psb\_glob\_to\_loc}{Global to local indices convertion}
+\clearpage\subsection*{psb\_glob\_to\_loc --- Global to local indices
+  convertion}
+\addcontentsline{toc}{subsection}{psb\_glob\_to\_loc}
 
-\syntax{call psb\_glob\_to\_loc}{x, y, desc\_a, info, iact,owned}
-\syntax*{call psb\_glob\_to\_loc}{x, desc\_a, info, iact,owned}
+\begin{verbatim}
+call psb_glob_to_loc(x, y, desc_a, info, iact,owned)
+call psb_glob_to_loc(x, desc_a, info, iact,owned)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -1052,17 +1116,23 @@ Intent: {\bf out}.\\
 An integer value; 0 means no error has been detected. 
 \end{description}
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item If an input index is out of range, then the corresponding output
   index is set to a negative number;
 \item The default \verb|I|gnore means that the negative output is the
   only action taken on an out-of-range input.
 \end{enumerate}
-\subroutine{psb\_loc\_to\_glob}{Local to global indices conversion}
 
-\syntax{call psb\_loc\_to\_glob}{x, y, desc\_a, info, iact}
-\syntax*{call psb\_loc\_to\_glob}{x, desc\_a, info, iact}
+
+\clearpage\subsection*{psb\_loc\_to\_glob --- Local to global indices
+  conversion}
+\addcontentsline{toc}{subsection}{psb\_loc\_to\_glob}
+
+\begin{verbatim}
+call psb_loc_to_glob(x, y, desc_a, info, iact)
+call psb_loc_to_glob(x, desc_a, info, iact)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -1112,9 +1182,12 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_loc_to_glob %%
 %
-\subroutine{psb\_is\_owned}{}
+\clearpage\subsection*{psb\_is\_owned }
+\addcontentsline{toc}{subsection}{psb\_is\_owned}
 
-\syntax{call psb\_is\_owned}{x, desc\_a}
+\begin{verbatim}
+call psb_is_owned(x, desc_a)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -1141,7 +1214,7 @@ Intent: {\bf out}.\\
 \end{description}
 
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item This routine returns a \verb|.true.| value for an index
   that is strictly owned by the current process, excluding the halo
@@ -1149,9 +1222,12 @@ Intent: {\bf out}.\\
 \end{enumerate}
 
 
-\subroutine{psb\_owned\_index}{}
+\clearpage\subsection*{psb\_owned\_index }
+\addcontentsline{toc}{subsection}{psb\_owned\_index}
 
-\syntax{call psb\_owned\_index}{y, x, desc\_a, info}
+\begin{verbatim}
+call psb_owned_index(y, x, desc_a, info)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -1190,7 +1266,7 @@ An integer value; 0 means no error has been detected.
 \end{description}
 
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item This routine returns a \verb|.true.| value for those indices
   that are strictly owned by the current process, excluding the halo
@@ -1198,9 +1274,12 @@ An integer value; 0 means no error has been detected.
 \end{enumerate}
 
 
-\subroutine{psb\_is\_local}{}
+\clearpage\subsection*{psb\_is\_local }
+\addcontentsline{toc}{subsection}{psb\_is\_local}
 
-\syntax{call psb\_is\_local}{x, desc\_a}
+\begin{verbatim}
+call psb_is_local(x, desc_a)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -1227,16 +1306,19 @@ Intent: {\bf out}.\\
 \end{description}
 
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item This routine returns a \verb|.true.| value for an index
   that is local to the current process, including the halo
   indices
 \end{enumerate}
 
-\subroutine{psb\_local\_index}{}
+\clearpage\subsection*{psb\_local\_index }
+\addcontentsline{toc}{subsection}{psb\_local\_index}
 
-\syntax{call psb\_local\_index}{y, x, desc\_a, info}
+\begin{verbatim}
+call psb_local_index(y, x, desc_a, info)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -1275,7 +1357,7 @@ An integer value; 0 means no error has been detected.
 \end{description}
 
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item This routine returns a \verb|.true.| value for those indices
   that are local to  the current process, including the halo
@@ -1287,9 +1369,12 @@ An integer value; 0 means no error has been detected.
 %
 %%   psb_ins %%
 %
-\subroutine{psb\_get\_boundary}{Extract list of boundary elements}
+\clearpage\subsection*{psb\_get\_boundary --- Extract list of boundary elements}
+\addcontentsline{toc}{subsection}{psb\_get\_boundary}
 
-\syntax{call psb\_get\_boundary}{bndel, desc, info}
+\begin{verbatim}
+call psb_get_boundary(bndel, desc, info)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -1317,7 +1402,7 @@ Intent: {\bf out}.\\
 An integer value; 0 means no error has been detected. 
 \end{description}
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item If there are no boundary elements (i.e., if the local part of
   the connectivity graph is self-contained) the output vector is set
@@ -1326,9 +1411,12 @@ An integer value; 0 means no error has been detected.
   number of boundary elements. 
 \end{enumerate}
 
-\subroutine{psb\_get\_overlap}{Extract list of overlap elements}
+\clearpage\subsection*{psb\_get\_overlap --- Extract list of overlap elements}
+\addcontentsline{toc}{subsection}{psb\_get\_overlap}
 
-\syntax{call psb\_get\_overlap}{ovrel, desc, info}
+\begin{verbatim}
+call psb_get_overlap(ovrel, desc, info)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -1356,7 +1444,7 @@ Intent: {\bf out}.\\
 An integer value; 0 means no error has been detected. 
 \end{description}
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item If there are no overlap elements the output vector is set
   to the ``not allocated'' state.  
@@ -1366,10 +1454,13 @@ An integer value; 0 means no error has been detected.
 
 
 
-\subroutine{psb\_sp\_getrow}{Extract row(s) from a sparse matrix}
+\clearpage\subsection*{psb\_sp\_getrow --- Extract row(s) from a sparse matrix}
+\addcontentsline{toc}{subsection}{psb\_sp\_getrow}
 
-\syntax{call psb\_sp\_getrow}{row, a, nz, ia, ja, val, info, append,
-  nzin, lrw}
+\begin{verbatim}
+call psb_sp_getrow(row, a, nz, ia, ja, val, info, &
+              & append, nzin, lrw)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -1440,7 +1531,7 @@ Intent: {\bf out}.\\
 An integer value; 0 means no error has been detected. 
 \end{description}
 
-\section*{Notes}
+{\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item The output $nz$ is always the size of the output generated by
   the current call; thus, if \verb|append=.true.|, the total output
@@ -1456,14 +1547,17 @@ An integer value; 0 means no error has been detected.
 
 
 
-\subroutine{psb\_sizeof}{Memory occupation}
+\clearpage\subsection*{psb\_sizeof --- Memory occupation}
+\addcontentsline{toc}{subsection}{psb\_sizeof}
 
 This function computes the memory occupation of a PSBLAS object.
 
 
-\syntax{psb\_sizeof}{a}
-\syntax*{psb\_sizeof}{desc\_a}
-\syntax*{psb\_sizeof}{prec}
+\begin{verbatim}
+isz = psb_sizeof(a)
+isz = psb_sizeof(desc_a)
+isz = psb_sizeof(prec)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -1492,14 +1586,17 @@ Returned  as: an integer number.
 \end{description}
 
 
-\subroutine{Sorting utilities}{}
+\clearpage\subsection*{Sorting utilities}
+\addcontentsline{toc}{subsection}{Sorting utilities}
 
-\subroutine*{psb\_msort}{Sorting by the Merge-sort algorithm}
-\subroutine*{psb\_qsort}{Sorting by the Quicksort  algorithm}
-\subroutine*{psb\_hsort}{Sorting by the Heapsort  algorithm}
-\syntax{call psb\_msort}{x,ix,dir,flag}
-\syntax*{call psb\_qsort}{x,ix,dir,flag}
-\syntax*{call psb\_hsort}{x,ix,dir,flag}
+{\par\noindent\large\bfseries psb\_msort --- Sorting by the Merge-sort algorithm}
+{\par\noindent\large\bfseries psb\_qsort --- Sorting by the Quicksort  algorithm}
+{\par\noindent\large\bfseries psb\_hsort --- Sorting by the Heapsort  algorithm}
+\begin{verbatim}
+call psb_msort(x,ix,dir,flag)
+call psb_qsort(x,ix,dir,flag)
+call psb_hsort(x,ix,dir,flag)
+\end{verbatim}
 
 These  serial routines sort a sequence $X$ into ascending or
 descending  order. The argument meaning is identical for the three
@@ -1536,7 +1633,8 @@ Type: {\bf Optional} \\
 An integer array of rank 1, whose entries are moved to the same
 position as the corresponding entries in $x$.
 \end{description}
-\section*{Usage notes}
+
+{\goodbreak\par\noindent\large\bfseries Notes}
 \begin{enumerate}
 \item The sorting can be performed in the up/down direction, on the
   natural or absolute values; for  complex data the sorting can only
diff --git a/docs/pdf/userguide.tex b/docs/pdf/userguide.tex
index 73258c7a..29138be8 100644
--- a/docs/pdf/userguide.tex
+++ b/docs/pdf/userguide.tex
@@ -10,6 +10,7 @@
             plainpages=false,
             pdfpagelabels,
             colorlinks, 
+            citecolor=red,
             linkcolor=blue]{hyperref}
 \usepackage{ifthen}
 \usepackage{graphicx}
@@ -58,7 +59,7 @@
    \ifdim \wd\@tempboxa >\hsize
         \setbox\@tempboxa\hbox{\em $($#2$)$}
 	\ifdim\wd\@tempboxa >\hsize
-          \begin{flushright}#1\ \em$($#2$)$\end{flushright}%
+          \flushright#1\ \em$($#2$)$\endflushright%
 	\else
          \hbox to\hsize{#1\hfil}%
          \hbox to\hsize{\hfil\box\@tempboxa}%
@@ -75,7 +76,36 @@
 \newcommand{\spdata}{\hyperlink{spdata}{{\tt psb\_spmat\_type}}}
 
 \begin{document}
-\include{title}
+
+\pdfbookmark{PSBLAS-v2.3 User's Guide}{title}
+
+\newlength{\centeroffset}
+\setlength{\centeroffset}{-0.5\oddsidemargin}
+\addtolength{\centeroffset}{0.5\evensidemargin}
+%\addtolength{\textwidth}{-\centeroffset}
+\thispagestyle{empty}
+\vspace*{\stretch{1}}
+\noindent\hspace*{\centeroffset}\makebox[0pt][l]{\begin{minipage}{\textwidth}
+\flushright
+{\Huge\bfseries PSBLAS 2.3 User's guide
+}
+\noindent\rule[-1ex]{\textwidth}{5pt}\\[2.5ex]
+\hfill\emph{\Large A reference guide for the Parallel Sparse BLAS library}
+\end{minipage}}
+
+\vspace{\stretch{1}}
+\noindent\hspace*{\centeroffset}\makebox[0pt][l]{\begin{minipage}{\textwidth}
+\flushright
+{\bfseries 
+by Salvatore Filippone\\
+and Alfredo Buttari}\\ 
+University of Rome ``Tor Vergata''.\\[3ex]
+\today
+\end{minipage}}
+
+%\addtolength{\textwidth}{\centeroffset}
+\vspace{\stretch{2}}
+
 \cleardoublepage
 \begingroup
   \renewcommand*{\thepage}{toc}
diff --git a/docs/pdf/userhtml.tex b/docs/pdf/userhtml.tex
new file mode 100644
index 00000000..9763525a
--- /dev/null
+++ b/docs/pdf/userhtml.tex
@@ -0,0 +1,270 @@
+\documentclass[10pt,a4paper,twoside]{article}
+\usepackage{pstricks}
+\usepackage{fancybox}
+\usepackage{amsfonts}
+% \usepackage{minitoc}
+% \setcounter{minitocdepth}{2}
+\usepackage[bookmarks=true, 
+            bookmarksnumbered=true, 
+            bookmarksopen=false, 
+            plainpages=false,
+            pdfpagelabels,
+            colorlinks, 
+            linkcolor=blue]{hyperref}
+\usepackage{ifthen}
+\usepackage{graphicx}
+\newtheorem{theorem}{Theorem}
+\newtheorem{corollary}{Corollary}
+
+%\newboolean{mtc}
+%\setboolean{mtc}{true}
+
+\pdfoutput=0
+% \relax
+% \pdfcompresslevel=0             %-- 0 = none, 9 = best
+% \pdfinfo{                       %-- Info dictionary of PDF output  /Author (Alfredo Buttari)
+%   /Title (Parallel Sparse BLAS V. 2.2)
+%   /Subject (Parallel Sparse Basic Linear Algebra Subroutines)
+%   /Keywords (Computer Science Linear Algebra Fluid Dynamics Parallel Linux MPI PSBLAS Iterative Solvers Preconditioners)
+%   /Creator (pdfLaTeX)
+%   /Producer ($Id: userguide.tex 1978 2007-10-19 14:51:12Z sfilippo $)
+% }
+% \pdfcatalog{          %-- Catalog dictionary of PDF output.
+%   /URI (http://ce.uniroma2.it/psblas)
+% } 
+
+\newcounter{subroutine}[subsection]
+\newcounter{example}[subroutine]
+\makeatletter
+\def\subroutine{\@ifstar{\@subroutine}{\clearpage\@subroutine}}%
+\def\@subroutine#1#2{%
+\stepcounter{subroutine}%
+      \section*{\flushleft #1---#2 \endflushleft}%
+      \addcontentsline{toc}{subsection}{#1}%
+      \markright{#1}}%
+\newcommand{\subsubroutine}[2]{%
+\stepcounter{subroutine}%
+      \subsection*{\flushleft #1---#2 \endflushleft}%
+      \addcontentsline{toc}{subsubsection}{#1}%
+      \markright{#1}}%
+\newcommand{\examplename}{Example}
+\newcommand{\syntaxname}{Syntax}
+\def\syntax{\@ifstar{\@ssyntax}{\@syntax}}%
+\def\@syntax{\nobreak\section*{\syntaxname}%
+     \@ssyntax}%
+\def\@ssyntax#1#2{%
+  \nobreak
+   \setbox\@tempboxa\hbox{#1\ {\em $($#2$)$}}%
+   \ifdim \wd\@tempboxa >\hsize
+        \setbox\@tempboxa\hbox{\em $($#2$)$}
+	\ifdim\wd\@tempboxa >\hsize
+          \flushright#1\ \em$($#2$)$\endflushright%
+	\else
+         \hbox to\hsize{#1\hfil}%
+         \hbox to\hsize{\hfil\box\@tempboxa}%
+        \fi
+     \else
+       \hbox to\hsize{\hfil\box\@tempboxa\hfil}%
+   \fi\par\vskip\baselineskip}
+\makeatother
+\newcommand{\example}{\stepcounter{example}%
+\section*{\examplename~\theexample}}
+
+\newcommand{\precdata}{\hyperlink{precdata}{{\tt psb\_prec\_type}}}
+\newcommand{\descdata}{\hyperlink{descdata}{{\tt psb\_desc\_type}}}
+\newcommand{\spdata}{\hyperlink{spdata}{{\tt psb\_spmat\_type}}}
+
+\begin{document}
+{\LARGE\bfseries PSBLAS\\[.8ex] User's and Reference
+  Guide}\\[\baselineskip]
+\emph{\large A reference guide for the Parallel Sparse BLAS library}\\[3ex]
+{\bfseries Salvatore Filippone\\
+   Alfredo Buttari } \\
+ University of Rome ``Tor Vergata'', Italy\\[2ex]
+%\\[10ex]
+%\today
+Software version: 2.3\\
+%\today
+July 24, 2008
+\cleardoublepage
+\begingroup
+  \renewcommand*{\thepage}{toc}
+  \pagenumbering{roman}   % Roman numbering
+  \setcounter{page}{1}    % Abstract start on page ii
+  \tableofcontents
+\endgroup  
+
+\cleardoublepage
+
+\pagenumbering{arabic}  % Arabic numbering
+\setcounter{page}{1}    % Chapters start on page 1
+
+\include{intro}
+\include{datastruct}
+\include{psbrout}
+\include{commrout}
+\include{toolsrout}
+\include{penv}
+\include{error}
+\include{util}
+\include{precs}
+\include{methods}
+
+\cleardoublepage
+
+\begin{thebibliography}{99}
+
+\bibitem{PARA04FOREST}
+G.~Bella, S.~Filippone, A.~De Maio and M.~Testa,
+{\em A Simulation Model for Forest Fires},
+in J.~Dongarra, K.~Madsen, J.~Wasniewski, editors,
+Proceedings of PARA~04 Workshop on State of the Art
+in Scientific Computing, pp.~546--553, Lecture Notes in Computer Science,
+Springer, 2005.
+\bibitem{2007d} A. Buttari, D. di Serafino, P. D'Ambra, S. Filippone,\newblock
+2LEV-D2P4: a package of high-performance preconditioners,\newblock
+Applicable Algebra in Engineering, Communications and Computing, 
+Volume 18, Number 3, May, 2007, pp.  223-239
+%Published online: 13 February 2007, {\tt http://dx.doi.org/10.1007/s00200-007-0035-z}
+%
+\bibitem{2007c}  P. D'Ambra, S. Filippone,  D. Di Serafino\newblock
+On the Development of PSBLAS-based Parallel Two-level Schwarz Preconditioners
+\newblock
+Applied Numerical Mathematics, Elsevier Science, 
+Volume 57, Issues 11-12, November-December 2007, Pages 1181-1196.
+%published online 3 February 2007, {\tt
+%  http://dx.doi.org/10.1016/j.apnum.2007.01.006}
+
+\bibitem{BLAS2}
+ Dongarra, J. J.,  DuCroz, J.,  Hammarling, S. and Hanson, R.,
+An Extended Set of {F}ortran {B}asic {L}inear {A}lgebra {S}ubprograms,
+{ACM Trans. Math. Softw.} vol.~{14}, 1--17, 1988.
+\bibitem{BLAS3}
+  Dongarra, J., DuCroz, J., Hammarling, S. and Duff, I.,
+A  Set of level 3 Basic Linear Algebra Subprograms,
+{ACM Trans. Math. Softw.} vol.~{16}, 1--17, 1990.
+%% \bibitem{DOUGLAS}
+%% R.E.~Bank and C.C.~Douglas,
+%% {\em SMMP: Sparse Matrix Multiplication Package}, 
+%% Advances in Computational Mathematics, 1993, 1, 127-137.
+%% (See also {\tt http://www.mgnet.org/~douglas/ccd-codes.html}) 
+%
+%
+%% \bibitem{PARA04}
+%% A.~Buttari, P.~D'Ambra, D.~di Serafino and S.~Filippone,
+%% {\em Extending PSBLAS to Build Parallel Schwarz Preconditioners},
+%% in , J.~Dongarra, K.~Madsen, J.~Wasniewski, editors,
+%% Proceedings of PARA~04 Workshop on State of the Art
+%% in Scientific Computing, pp.~593--602, Lecture Notes in Computer Science,
+%% Springer, 2005.
+%
+%% \bibitem{CAI_SAAD}
+%% X.~C.~Cai and Y.~Saad,
+%% {\em Overlapping Domain Decomposition Algorithms for General Sparse Matrices},
+%% Numerical Linear Algebra with Applications, 3(3), pp.~221--237, 1996.
+%% %
+%% \bibitem{CAI_SARKIS}
+%% X.C.~Cai and M.~Sarkis,
+%% {\em A Restricted Additive Schwarz Preconditioner for General Sparse Linear Systems},
+%% SIAM Journal on Scientific Computing, 21(2), pp.~792--797, 1999.
+%
+%% \bibitem{CAI_WIDLUND}
+%% X.C.~Cai and O.~B.~Widlund,
+%% {\em Domain Decomposition Algorithms for Indefinite Elliptic Problems},
+%% SIAM Journal on Scientific and Statistical Computing, 13(1), pp.~243--258, 1992.
+%
+%% \bibitem{DD1}
+%% T.~Chan and T.~Mathew,
+%% {\em Domain Decomposition Algorithms},
+%% in A.~Iserles, editor, Acta Numerica 1994, pp.~61--143, 1994.
+%% Cambridge University Press.
+%% %
+%% \bibitem{APNUM06}
+%% P.~D'Ambra, D.~di Serafino and S.~Filippone,
+%% On the Development of PSBLAS-based Parallel Two-level Schwarz Preconditioners,
+%% Applied Numerical Mathematics, to appear, 2007.
+%
+%% \bibitem{UMFPACK}
+%% T.A.~Davis, 
+%% {\em Algorithm 832: UMFPACK - an Unsymmetric-pattern Multifrontal
+%% Method with a Column Pre-ordering Strategy},
+%% ACM Transactions on Mathematical Software, 30, pp.~196--199, 2004.
+%% (See also {\tt http://www.cise.ufl.edu/~davis/})
+%% %
+%% \bibitem{SUPERLU}
+%% J.W.~Demmel, S.C.~Eisenstat, J.R.~Gilbert, X.S.~Li and J.W.H.~Liu,
+%% A supernodal approach to sparse partial pivoting,
+%% SIAM Journal on Matrix Analysis and Applications, 20(3), pp.~720--755, 1999.
+%
+\bibitem{BLACS}
+J.~J.~Dongarra and R.~C.~Whaley,
+{\em A User's Guide to the BLACS v.~1.1},
+Lapack Working Note 94, Tech.\ Rep.\ UT-CS-95-281, University of
+Tennessee, March 1995 (updated May 1997).
+%
+\bibitem{sblas97}
+I.~Duff, M.~Marrone, G.~Radicati and C.~Vittoli,
+{\em Level 3 Basic Linear Algebra Subprograms for Sparse Matrices: 
+a User Level Interface},
+ACM Transactions on Mathematical Software, 23(3), pp.~379--401, 1997.
+%
+\bibitem{sblas02}
+I.~Duff, M.~Heroux and R.~Pozo,
+{\em An Overview of the Sparse Basic Linear
+Algebra Subprograms: the New Standard from the BLAS Technical Forum},
+ACM Transactions on Mathematical Software, 28(2), pp.~239--267, 2002.
+\bibitem{PSBLAS}
+S.~Filippone and M.~Colajanni, 
+{\em PSBLAS: A Library for Parallel Linear Algebra
+Computation on Sparse Matrices},
+\newblock
+ACM Transactions on Mathematical Software, 26(4), pp.~527--550, 2000.
+%
+\bibitem{KIVA3PSBLAS}
+S.~Filippone, P.~D'Ambra, M.~Colajanni,
+{\em Using a Parallel Library of Sparse Linear Algebra in a Fluid Dynamics 
+Applications Code on Linux Clusters},
+in G.~Joubert, A.~Murli, F.~Peters, M.~Vanneschi, editors,
+Parallel Computing - Advances \& Current Issues,
+pp.~441--448, Imperial College Press, 2002. 
+%
+\bibitem{METIS}
+Karypis, G. and Kumar, V.,
+{\em {METIS}: Unstructured Graph Partitioning and Sparse Matrix
+  Ordering System}.
+Minneapolis, MN 55455: University of Minnesota, Department of
+  Computer Science, 1995. 
+Internet Address: {\verb|http://www.cs.umn.edu/~karypis|}.
+\bibitem{BLAS1}
+Lawson, C.,  Hanson, R., Kincaid, D. and Krogh, F.,
+   Basic {L}inear {A}lgebra {S}ubprograms for {F}ortran usage,
+{ACM Trans. Math. Softw.} vol.~{5}, 38--329, 1979.
+
+\bibitem{machiels}
+{Machiels, L. and Deville, M.}
+{\em Fortran 90: An entry to object-oriented programming for the solution
+  of partial differential equations.}
+{ACM Trans. Math. Softw.} vol.~{23}, 32--49.
+\bibitem{metcalf}
+{Metcalf, M., Reid, J. and Cohen, M.}
+{\em Fortran 95/2003 explained.}
+{Oxford University Press}, 2004.
+%
+%% \bibitem{DD2}
+%% B.~Smith, P.~Bjorstad and W.~Gropp,
+%% {\em Domain Decomposition: Parallel Multilevel Methods for Elliptic
+%% Partial Differential Equations},
+%% Cambridge University Press, 1996.
+%
+\bibitem{MPI1}
+M.~Snir, S.~Otto, S.~Huss-Lederman, D.~Walker and J.~Dongarra,
+{\em MPI: The Complete Reference. Volume 1 - The MPI Core}, second edition,
+MIT Press, 1998.
+%
+\end{thebibliography}
+
+\end{document}
+%%% Local Variables: 
+%%% mode: latex
+%%% TeX-master: 'userguide'
+%%% End: 
diff --git a/docs/pdf/util.tex b/docs/pdf/util.tex
index fb48a3ca..54db4fce 100644
--- a/docs/pdf/util.tex
+++ b/docs/pdf/util.tex
@@ -9,10 +9,14 @@ module \verb|psb_util_mod|.
 
 %\subroutine{PSB\_HBIO\_MOD}{Input/Output in Harwell-Boeing format}
 
-\subroutine{hb\_read}{Read a sparse matrix from a file in the
+\clearpage\subsection*{hb\_read --- Read a sparse matrix from a file in the
   Harwell--Boeing format}
-\syntax{call hb\_read}{a, iret, iunit, filename, b, mtitle}
- 
+\addcontentsline{toc}{subsubsection}{hb\_read}
+
+\begin{verbatim}
+call hb_read(a, iret, iunit, filename, b, mtitle)
+\end{verbatim}
+
 \begin{description}
 \item[Type:] Asynchronous.
 \item[\bf  On Entry ]
@@ -48,8 +52,13 @@ An integer value; 0 means no error has been detected.
 
 
 
-\subroutine{hb\_write}{Write a sparse matrix to a  file in the Harwell--Boeing format}
-\syntax{call hb\_write}{a, iret, iunit, filename, key, rhs, mtitle}
+\clearpage\subsection*{hb\_write --- Write a sparse matrix to a  file
+  in the Harwell--Boeing format}
+\addcontentsline{toc}{subsubsection}{hb\_write}
+
+\begin{verbatim}
+call hb_write(a, iret, iunit, filename, key, rhs, mtitle)
+\end{verbatim}
 
 
 
@@ -96,8 +105,13 @@ An integer value; 0 means no error has been detected.
 
 %\subroutine{PSB\_MMIO\_MOD}{Input/Output in MatrixMarket format}
 
-\subroutine{mm\_mat\_read}{Read a sparse matrix from a file in the MatrixMarket format}
-\syntax{call mm\_mat\_read}{a, iret, iunit, filename}
+\clearpage\subsection*{mm\_mat\_read --- Read a sparse matrix from a
+  file in the MatrixMarket format}
+\addcontentsline{toc}{subsubsection}{mm\_mat\_read}
+
+\begin{verbatim}
+call mm_mat_read(a, iret, iunit, filename)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -122,8 +136,12 @@ Type: {\bf required} \\
 An integer value; 0 means no error has been detected. 
 \end{description}
 
-\subroutine{mm\_vet\_read}{Read a dense vector from a file in the MatrixMarket format}
-\syntax{call mm\_vet\_read}{b, iret, iunit, filename}
+\clearpage\subsection*{mm\_vet\_read --- Read a dense vector from a
+  file in the MatrixMarket format}
+\addcontentsline{toc}{subsubsection}{mm\_vet\_read }
+\begin{verbatim}
+call mm_vet_read(b, iret, iunit, filename)
+\end{verbatim}
 
 \begin{description}
 \item[Type:] Asynchronous.
@@ -152,8 +170,12 @@ An integer value; 0 means no error has been detected.
 
 
 
-\subroutine{mm\_mat\_write}{Write a sparse matrix to a  file in the MatrixMarket format}
-\syntax{call mm\_mat\_write}{a, mtitle, iret, iunit, filename}
+\clearpage\subsection*{mm\_mat\_write --- Write a sparse matrix to a
+  file in the MatrixMarket format}
+\addcontentsline{toc}{subsubsection}{mm\_mat\_write}
+\begin{verbatim}
+call mm_mat_write(a, mtitle, iret, iunit, filename)
+\end{verbatim}
 \begin{description}
 \item[Type:] Asynchronous.
 \item[\bf  On Entry ]