From 5473b6e783d3beb351470a085c1bbcbacec7e2c5 Mon Sep 17 00:00:00 2001 From: Salvatore Filippone Date: Sat, 8 Apr 2017 11:26:15 +0000 Subject: [PATCH] psblas3: docs/html/footnode.html docs/html/img101.png docs/html/img103.png docs/html/img104.png docs/html/img108.png docs/html/img112.png docs/html/img129.png docs/html/img13.png docs/html/img133.png docs/html/img136.png docs/html/img138.png docs/html/img140.png docs/html/img145.png docs/html/img147.png docs/html/img148.png docs/html/img149.png docs/html/img15.png docs/html/img150.png docs/html/img151.png docs/html/img152.png docs/html/img153.png docs/html/img156.png docs/html/img157.png docs/html/img158.png docs/html/img159.png docs/html/img16.png docs/html/img160.png docs/html/img161.png docs/html/img162.png docs/html/img163.png docs/html/img164.png docs/html/img165.png docs/html/img166.png docs/html/img20.png docs/html/img22.png docs/html/img25.png docs/html/img26.png docs/html/img28.png docs/html/img31.png docs/html/img32.png docs/html/img35.png docs/html/img37.png docs/html/img40.png docs/html/img41.png docs/html/img42.png docs/html/img43.png docs/html/img45.png docs/html/img49.png docs/html/img53.png docs/html/img56.png docs/html/img58.png docs/html/img63.png docs/html/img68.png docs/html/img73.png docs/html/img75.png docs/html/img79.png docs/html/img8.png docs/html/img80.png docs/html/img81.png docs/html/img86.png docs/html/img89.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 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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.html docs/psblas-3.5.pdf docs/src/Makefile docs/src/precs.tex prec/psb_c_base_prec_mod.f90 prec/psb_c_bjacprec.f90 prec/psb_c_diagprec.f90 prec/psb_c_nullprec.f90 prec/psb_c_prec_type.f90 prec/psb_d_base_prec_mod.f90 prec/psb_d_bjacprec.f90 prec/psb_d_diagprec.f90 prec/psb_d_nullprec.f90 prec/psb_d_prec_type.f90 prec/psb_s_base_prec_mod.f90 prec/psb_s_bjacprec.f90 prec/psb_s_diagprec.f90 prec/psb_s_nullprec.f90 prec/psb_s_prec_type.f90 prec/psb_z_base_prec_mod.f90 prec/psb_z_bjacprec.f90 prec/psb_z_diagprec.f90 prec/psb_z_nullprec.f90 prec/psb_z_prec_type.f90 Cosmetic changes to prec%descr Fix docs. --- docs/html/footnode.html | 8 +++---- docs/html/img101.png | Bin 227 -> 221 bytes docs/html/img103.png | Bin 258 -> 258 bytes docs/html/img104.png | Bin 193 -> 184 bytes docs/html/img108.png | Bin 255 -> 251 bytes docs/html/img112.png | Bin 276 -> 222 bytes docs/html/img129.png | Bin 231 -> 223 bytes docs/html/img13.png | Bin 3169 -> 2948 bytes docs/html/img133.png | Bin 210 -> 208 bytes docs/html/img136.png | Bin 276 -> 246 bytes docs/html/img138.png | Bin 267 -> 259 bytes docs/html/img140.png | Bin 239 -> 237 bytes docs/html/img145.png | Bin 762 -> 710 bytes docs/html/img147.png | Bin 867 -> 848 bytes docs/html/img148.png | Bin 1169 -> 1036 bytes docs/html/img149.png | Bin 1357 -> 1196 bytes docs/html/img15.png | Bin 230 -> 218 bytes docs/html/img150.png | Bin 1022 -> 931 bytes docs/html/img151.png | Bin 1106 -> 1001 bytes docs/html/img152.png | Bin 1196 -> 1038 bytes docs/html/img153.png | Bin 1136 -> 1009 bytes docs/html/img156.png | Bin 916 -> 262 bytes docs/html/img157.png | Bin 675 -> 916 bytes docs/html/img158.png | Bin 664 -> 675 bytes docs/html/img159.png | Bin 234 -> 591 bytes docs/html/img16.png | Bin 196 -> 187 bytes docs/html/img160.png | Bin 430 -> 210 bytes docs/html/img161.png | Bin 2413 -> 385 bytes docs/html/img162.png | Bin 451 -> 2413 bytes docs/html/img163.png | Bin 500 -> 431 bytes docs/html/img164.png | Bin 412 -> 500 bytes docs/html/img165.png | Bin 356 -> 412 bytes docs/html/img166.png | Bin 379 -> 356 bytes docs/html/img20.png | Bin 184 -> 179 bytes docs/html/img22.png | Bin 201 -> 185 bytes docs/html/img25.png | Bin 464 -> 437 bytes docs/html/img26.png | Bin 266 -> 259 bytes docs/html/img28.png | Bin 247 -> 238 bytes docs/html/img31.png | Bin 310 -> 294 bytes docs/html/img32.png | Bin 791 -> 724 bytes docs/html/img35.png | Bin 309 -> 309 bytes docs/html/img37.png | Bin 907 -> 793 bytes docs/html/img40.png | Bin 325 -> 316 bytes docs/html/img41.png | Bin 649 -> 574 bytes docs/html/img42.png | Bin 462 -> 405 bytes docs/html/img43.png | Bin 486 -> 440 bytes docs/html/img45.png | Bin 573 -> 522 bytes docs/html/img49.png | Bin 414 -> 393 bytes docs/html/img53.png | Bin 425 -> 412 bytes docs/html/img56.png | Bin 1890 -> 1262 bytes docs/html/img58.png | Bin 2971 -> 2637 bytes docs/html/img63.png | Bin 2387 -> 1640 bytes docs/html/img68.png | Bin 5388 -> 4873 bytes docs/html/img73.png | Bin 362 -> 333 bytes docs/html/img75.png | Bin 2449 -> 1218 bytes docs/html/img79.png | Bin 791 -> 740 bytes docs/html/img8.png | Bin 230 -> 222 bytes docs/html/img80.png | Bin 369 -> 344 bytes docs/html/img81.png | Bin 1415 -> 1316 bytes docs/html/img86.png | Bin 186 -> 186 bytes docs/html/img89.png | Bin 218 -> 213 bytes docs/html/index.html | 8 ++++--- docs/html/node1.html | 8 ++++--- docs/html/node10.html | 7 +++--- docs/html/node100.html | 4 ++-- docs/html/node101.html | 4 ++-- docs/html/node102.html | 4 ++-- docs/html/node103.html | 8 +++---- docs/html/node104.html | 4 ++-- docs/html/node105.html | 4 ++-- docs/html/node106.html | 4 ++-- docs/html/node107.html | 4 ++-- docs/html/node108.html | 4 ++-- docs/html/node109.html | 4 ++-- docs/html/node11.html | 4 ++-- docs/html/node110.html | 4 ++-- docs/html/node111.html | 4 ++-- docs/html/node112.html | 4 ++-- docs/html/node113.html | 10 ++++---- docs/html/node114.html | 10 ++++---- docs/html/node115.html | 6 ++--- docs/html/node116.html | 4 ++-- docs/html/node117.html | 6 ++--- docs/html/node118.html | 6 ++--- docs/html/node119.html | 6 ++--- docs/html/node12.html | 4 ++-- docs/html/node120.html | 6 ++--- docs/html/node121.html | 6 ++--- docs/html/node122.html | 6 ++--- docs/html/node123.html | 4 ++-- docs/html/node124.html | 7 +++--- docs/html/node125.html | 4 ++-- docs/html/node126.html | 4 ++-- docs/html/node127.html | 28 ++++++++++++++++++---- docs/html/node128.html | 4 ++-- docs/html/node129.html | 7 +++--- docs/html/node13.html | 4 ++-- docs/html/node130.html | 4 ++-- docs/html/node14.html | 4 ++-- docs/html/node15.html | 4 ++-- docs/html/node16.html | 4 ++-- docs/html/node17.html | 4 ++-- docs/html/node18.html | 4 ++-- docs/html/node19.html | 4 ++-- docs/html/node2.html | 4 ++-- docs/html/node20.html | 4 ++-- docs/html/node21.html | 4 ++-- docs/html/node22.html | 7 +++--- docs/html/node23.html | 4 ++-- docs/html/node24.html | 4 ++-- docs/html/node25.html | 4 ++-- docs/html/node26.html | 4 ++-- docs/html/node27.html | 4 ++-- docs/html/node28.html | 4 ++-- docs/html/node29.html | 4 ++-- docs/html/node3.html | 8 +++---- docs/html/node30.html | 6 ++--- docs/html/node31.html | 6 ++--- docs/html/node32.html | 4 ++-- docs/html/node33.html | 4 ++-- docs/html/node34.html | 4 ++-- docs/html/node35.html | 4 ++-- docs/html/node36.html | 4 ++-- docs/html/node37.html | 4 ++-- docs/html/node38.html | 4 ++-- docs/html/node39.html | 4 ++-- docs/html/node4.html | 8 +++---- docs/html/node40.html | 4 ++-- docs/html/node41.html | 4 ++-- docs/html/node42.html | 7 +++--- docs/html/node43.html | 4 ++-- docs/html/node44.html | 4 ++-- docs/html/node45.html | 4 ++-- docs/html/node46.html | 4 ++-- docs/html/node47.html | 4 ++-- docs/html/node48.html | 4 ++-- docs/html/node49.html | 7 +++--- docs/html/node5.html | 4 ++-- docs/html/node50.html | 4 ++-- docs/html/node51.html | 4 ++-- docs/html/node52.html | 19 +++++++-------- docs/html/node53.html | 27 ++++++++++----------- docs/html/node54.html | 24 +++++++++---------- docs/html/node55.html | 23 +++++++----------- docs/html/node56.html | 16 ++++++------- docs/html/node57.html | 19 +++++++-------- docs/html/node58.html | 25 ++++++++++---------- docs/html/node59.html | 21 +++++++---------- docs/html/node6.html | 14 +++++------ docs/html/node60.html | 17 +++++++------- docs/html/node61.html | 6 ++--- docs/html/node62.html | 6 ++--- docs/html/node63.html | 25 +++++++++----------- docs/html/node64.html | 27 ++++++++++----------- docs/html/node65.html | 7 +++--- docs/html/node66.html | 22 +++++++++--------- docs/html/node67.html | 22 +++++++++--------- docs/html/node68.html | 6 ++--- docs/html/node69.html | 10 ++++---- docs/html/node7.html | 4 ++-- docs/html/node70.html | 4 ++-- docs/html/node71.html | 8 +++---- docs/html/node72.html | 16 ++++++------- docs/html/node73.html | 4 ++-- docs/html/node74.html | 4 ++-- docs/html/node75.html | 4 ++-- docs/html/node76.html | 4 ++-- docs/html/node77.html | 6 ++--- docs/html/node78.html | 12 +++++----- docs/html/node79.html | 4 ++-- docs/html/node8.html | 4 ++-- docs/html/node80.html | 4 ++-- docs/html/node81.html | 5 ++-- docs/html/node82.html | 8 +++---- docs/html/node83.html | 8 +++---- docs/html/node84.html | 6 ++--- docs/html/node85.html | 4 ++-- docs/html/node86.html | 4 ++-- docs/html/node87.html | 8 +++---- docs/html/node88.html | 8 +++---- docs/html/node89.html | 6 ++--- docs/html/node9.html | 4 ++-- docs/html/node90.html | 6 ++--- docs/html/node91.html | 6 ++--- docs/html/node92.html | 6 ++--- docs/html/node93.html | 4 ++-- docs/html/node94.html | 4 ++-- docs/html/node95.html | 8 +++---- docs/html/node96.html | 4 ++-- docs/html/node97.html | 10 ++++---- docs/html/node98.html | 4 ++-- docs/html/node99.html | 4 ++-- docs/html/userhtml.html | 8 ++++--- docs/psblas-3.5.pdf | 44 +++++++++++++++++++---------------- docs/src/Makefile | 2 +- docs/src/precs.tex | 13 ++++++++--- prec/psb_c_base_prec_mod.f90 | 27 ++++++++++++++++++++- prec/psb_c_bjacprec.f90 | 21 ++++++++++++----- prec/psb_c_diagprec.f90 | 19 +++++++++++---- prec/psb_c_nullprec.f90 | 20 ++++++++++++---- prec/psb_c_prec_type.f90 | 5 ++-- prec/psb_d_base_prec_mod.f90 | 27 ++++++++++++++++++++- prec/psb_d_bjacprec.f90 | 21 ++++++++++++----- prec/psb_d_diagprec.f90 | 19 +++++++++++---- prec/psb_d_nullprec.f90 | 20 ++++++++++++---- prec/psb_d_prec_type.f90 | 5 ++-- prec/psb_s_base_prec_mod.f90 | 27 ++++++++++++++++++++- prec/psb_s_bjacprec.f90 | 21 ++++++++++++----- prec/psb_s_diagprec.f90 | 19 +++++++++++---- prec/psb_s_nullprec.f90 | 20 ++++++++++++---- prec/psb_s_prec_type.f90 | 5 ++-- prec/psb_z_base_prec_mod.f90 | 27 ++++++++++++++++++++- prec/psb_z_bjacprec.f90 | 21 ++++++++++++----- prec/psb_z_diagprec.f90 | 19 +++++++++++---- prec/psb_z_nullprec.f90 | 20 ++++++++++++---- prec/psb_z_prec_type.f90 | 5 ++-- 216 files changed, 808 insertions(+), 574 deletions(-) diff --git a/docs/html/footnode.html b/docs/html/footnode.html index b94373fd..086fb082 100644 --- a/docs/html/footnode.html +++ b/docs/html/footnode.html @@ -1,6 +1,6 @@ - diff --git a/docs/html/node1.html b/docs/html/node1.html index d37d1c64..aa41f85b 100644 --- a/docs/html/node1.html +++ b/docs/html/node1.html @@ -1,6 +1,6 @@ - \begin{displaymath}dot \leftarrow x^H y\end{displaymath}

- 

 psb_gedot(x, y, desc_a, info)
@@ -124,10 +123,10 @@ Data types
 

 

 
$dot$, $x$, 
 
x

 
the local portion of global dense matrix
 $x$.
 

@@ -178,7 +177,7 @@ Intent: in.
 Specified as:  a rank one or two array or an object of type vdatapsb_T_vect_type 
 containing numbers of type specified in
 Table 2. The rank of $x$ must be the same of 2. The rank of $y$ must be the same of $x$. 
 

@@ -218,7 +217,6 @@ Type: required
 Intent: in.
 

 Specified as: an object of type descdatapsb_desc_type.
-
 

 
 
On Return

@@ -226,7 +224,7 @@ Specified as: an object of type descdatapsb_desc_type.
 
 
Function value

 
is the dot product of subvectors $x$ and out.
 An integer value; 0 means no error has been detected. 
 

 
-
 

 

 
diff --git a/docs/html/node54.html b/docs/html/node54.html
index fbf178e4..53c60c62 100644
--- a/docs/html/node54.html
+++ b/docs/html/node54.html
@@ -1,6 +1,6 @@
 
 
-
diff --git a/docs/html/node56.html b/docs/html/node56.html
index cddeff04..3c6b12b0 100644
--- a/docs/html/node56.html
+++ b/docs/html/node56.html
@@ -1,6 +1,6 @@
 
 
-
 
 \begin{displaymath}res(i) \leftarrow \max_k \vert x(k,i)\vert \end{displaymath}
 
@@ -92,11 +92,11 @@ Data types
 

 
@@ -135,7 +135,7 @@ Data types
x
the local portion of global dense matrix
 $x$. 
 

@@ -165,7 +165,7 @@ Specified as: an object of type descdatapsb_desc_type.
 
res
is the infinity norm of the columns of $x$.
 

diff --git a/docs/html/node57.html b/docs/html/node57.html
index 4665c65e..53f40a07 100644
--- a/docs/html/node57.html
+++ b/docs/html/node57.html
@@ -1,6 +1,6 @@
 
 
-
 
 \begin{displaymath}res(i) \leftarrow \max_k \vert x(k,i)\vert \end{displaymath}
 
 

 

 This function computes the 1-norm of a vector $x$.
 

 If $x$ is a real vector 
 it computes 1-norm as:
@@ -102,7 +102,7 @@ res(i) \leftarrow  \|x_i\|
 

 

 else if $x$ is a complex vector then it computes 1-norm  as:
 

@@ -114,7 +114,7 @@ res(i) \leftarrow \|re(x)\|_1 + \|im(x)\|_1
  -->
 
 \begin{displaymath}res(i) \leftarrow \Vert re(x)\Vert _1 + \Vert im(x)\Vert _1\end{displaymath}
 
@@ -136,11 +136,11 @@ Data types
 

 

 
$res$
 $x$
 Subroutine
 
 
 
 

@@ -179,10 +179,9 @@ Data types
x
the local portion of global dense matrix
 $x$. 
-
 

 Scope: local 
 

@@ -212,7 +211,7 @@ Specified as: an object of type descdatapsb_desc_type.
 
res
contains the 1-norm of (the columns of) $x$.
 

diff --git a/docs/html/node59.html b/docs/html/node59.html
index a22b3734..3c747c6b 100644
--- a/docs/html/node59.html
+++ b/docs/html/node59.html
@@ -1,6 +1,6 @@
 
 
-
 
 \begin{displaymath}res(i) \leftarrow \Vert x(:,i)\Vert _2 \end{displaymath}
 
@@ -92,11 +92,11 @@ Data types
 

 

 
$res$
 $x$
 Subroutine
 
 
 
 

@@ -135,10 +135,9 @@ Data types
x
the local portion of global dense matrix
 $x$. 
-
 

 Scope: local 
 

@@ -168,7 +167,7 @@ Specified as: an object of type descdatapsb_desc_type.
 
res
contains the 1-norm of (the columns of) $x$.
 

diff --git a/docs/html/node61.html b/docs/html/node61.html
index 7a7d040b..b9707887 100644
--- a/docs/html/node61.html
+++ b/docs/html/node61.html
@@ -1,6 +1,6 @@
 
 
-
 
 \begin{displaymath}nrm1 \leftarrow \Vert A\Vert _1 \end{displaymath}
 
diff --git a/docs/html/node62.html b/docs/html/node62.html
index bb9f341a..cf8550f7 100644
--- a/docs/html/node62.html
+++ b/docs/html/node62.html
@@ -1,6 +1,6 @@
 
 
-
 
 \begin{displaymath}nrmi \leftarrow \Vert A\Vert _\infty \end{displaymath}
 
diff --git a/docs/html/node63.html b/docs/html/node63.html
index ecc265dd..1c7c14b5 100644
--- a/docs/html/node63.html
+++ b/docs/html/node63.html
@@ -1,6 +1,6 @@
 
 
-
 
 \begin{displaymath}loc\_x_i \leftarrow scatter(glob\_x) \end{displaymath}
 
@@ -99,7 +99,7 @@ process $i$.
 
$scatter$
is the scatter function.
@@ -146,7 +146,7 @@ Data types
 

 

 \begin{lstlisting}
 call psb_scatter(glob_x, loc_x, desc_a, info, root, mold)
diff --git a/docs/html/node7.html b/docs/html/node7.html
index 5e6419ac..88b2e9b2 100644
--- a/docs/html/node7.html
+++ b/docs/html/node7.html
@@ -1,6 +1,6 @@
 <!DOCTYPE HTML PUBLIC 
 
-
 
 
diff --git a/docs/psblas-3.5.pdf b/docs/psblas-3.5.pdf
index 03645c0d..ac39e96e 100644
--- a/docs/psblas-3.5.pdf
+++ b/docs/psblas-3.5.pdf
@@ -21199,7 +21199,7 @@ endstream
 endobj
 1708 0 obj
 <<
-/Length 1822      
+/Length 2936      
 >>
 stream
 0 g 0 G
@@ -21208,7 +21208,7 @@ BT
 /F16 11.9552 Tf 150.705 706.129 Td [(descr)-375(|)-375(Prin)31(ts)-375(a)-375(description)-375(of)-375(curren)31(t)-375(preconditioner)]TJ
 0 g 0 G
 0 g 0 G
-/F30 9.9626 Tf 0 -18.389 Td [(call)-525(prec%descr\050\051)]TJ 0 -11.956 Td [(call)-525(prec%descr\050iout\051)]TJ
+/F30 9.9626 Tf 0 -18.389 Td [(call)-525(prec%descr\050\051)]TJ 0 -11.956 Td [(call)-525(prec%descr\050iout,)-525(root\051)]TJ
 0 g 0 G
 /F27 9.9626 Tf 0 -21.917 Td [(T)32(yp)-32(e:)]TJ
 0 g 0 G
@@ -21241,9 +21241,13 @@ BT
 0 g 0 G
 /F27 9.9626 Tf -287.509 -19.925 Td [(iout)]TJ
 0 g 0 G
-/F8 9.9626 Tf 24.713 0 Td [(output)-333(unit.)-444(Scop)-28(e:)]TJ/F27 9.9626 Tf 89.94 0 Td [(lo)-32(cal)]TJ/F8 9.9626 Tf -89.747 -11.955 Td [(T)28(yp)-28(e:)]TJ/F27 9.9626 Tf 29.612 0 Td [(optiona)]TJ/F8 9.9626 Tf -29.612 -11.955 Td [(In)28(ten)28(t:)]TJ/F27 9.9626 Tf 33.486 0 Td [(in)]TJ/F8 9.9626 Tf 9.548 0 Td [(.)]TJ -43.034 -11.955 Td [(Sp)-28(eci\014ed)-333(as:)-445(an)-333(in)28(teger)-333(n)27(um)28(b)-28(er.)]TJ
+/F8 9.9626 Tf 24.713 0 Td [(output)-333(unit.)-444(Scop)-28(e:)]TJ/F27 9.9626 Tf 89.94 0 Td [(lo)-32(cal)]TJ/F8 9.9626 Tf -89.747 -11.955 Td [(T)28(yp)-28(e:)]TJ/F27 9.9626 Tf 29.612 0 Td [(optional)]TJ/F8 9.9626 Tf -29.612 -11.955 Td [(In)28(ten)28(t:)]TJ/F27 9.9626 Tf 33.486 0 Td [(in)]TJ/F8 9.9626 Tf 9.548 0 Td [(.)]TJ -43.034 -11.955 Td [(Sp)-28(eci\014ed)-333(as:)-445(an)-333(in)28(teger)-333(n)27(um)28(b)-28(er.)-444(Default:)-444(default)-334(outpu)1(t)-334(unit.)]TJ
 0 g 0 G
- 139.477 -431.922 Td [(132)]TJ
+/F27 9.9626 Tf -24.906 -19.926 Td [(ro)-32(ot)]TJ
+0 g 0 G
+/F8 9.9626 Tf 25.93 0 Td [(Pro)-28(cess)-333(from)-334(whic)28(h)-333(to)-333(prin)28(t)-334(Scop)-28(e:)]TJ/F27 9.9626 Tf 157.244 0 Td [(lo)-32(cal)]TJ/F8 9.9626 Tf -158.268 -11.955 Td [(T)28(yp)-28(e:)]TJ/F27 9.9626 Tf 29.612 0 Td [(optional)]TJ/F8 9.9626 Tf -29.612 -11.955 Td [(In)28(ten)28(t:)]TJ/F27 9.9626 Tf 33.486 0 Td [(in)]TJ/F8 9.9626 Tf 9.547 0 Td [(.)]TJ -43.033 -11.955 Td [(Sp)-28(eci\014ed)-478(as:)-733(an)-478(in)28(teger)-478(n)28(um)27(b)-27(er)-478(b)-28(et)28(w)28(een)-478(0)-478(and)]TJ/F11 9.9626 Tf 220.073 0 Td [(np)]TJ/F14 9.9626 Tf 14.166 0 Td [(\000)]TJ/F8 9.9626 Tf 10.922 0 Td [(1,)-514(in)-478(whic)28(h)-478(case)]TJ -245.161 -11.955 Td [(the)-410(sp)-28(eci\014ed)-410(pro)-28(cess)-410(will)-411(pri)1(n)27(t)-410(the)-410(description,)-429(or)]TJ/F14 9.9626 Tf 225 0 Td [(\000)]TJ/F8 9.9626 Tf 7.749 0 Td [(1,)-429(in)-411(whic)28(h)-410(case)-410(all)]TJ -232.749 -11.955 Td [(pro)-28(cesses)-333(will)-334(prin)28(t.)-444(Default:)-445(0.)]TJ
+0 g 0 G
+ 139.477 -352.221 Td [(132)]TJ
 0 g 0 G
 ET
 
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@@ -21818,11 +21822,11 @@ stream
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-/CreationDate (D:20170407152605+01'00')
-/ModDate (D:20170407152605+01'00')
+ /Title (Parallel Sparse BLAS V. 3.5.0) /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 10516 2017-04-07 15:20:39Z sfilippo $) /Author()/Title()/Subject()/Creator(LaTeX with hyperref package)/Producer(pdfTeX-1.40.17)/Keywords()
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diff --git a/docs/src/Makefile b/docs/src/Makefile
index 1a725cae..54707fbc 100644
--- a/docs/src/Makefile
+++ b/docs/src/Makefile
@@ -138,7 +138,7 @@ PDF      = $(join $(BASEFILE),.pdf)
 PS       = $(join $(BASEFILE),.ps)
 GXS      = $(join $(BASEFILE),.gxs)
 GLX      = $(join $(BASEFILE),.glx)
-TARGETPDF= ../psblas-3.4.pdf
+TARGETPDF= ../psblas-3.5.pdf
 BASEHTML = $(patsubst %.tex,%,$(HTMLFILE))
 HTML     = $(join $(HTMLFILE),.html)
 HTMLDIR  = ../html
diff --git a/docs/src/precs.tex b/docs/src/precs.tex
index d8d58221..7d64f8e9 100644
--- a/docs/src/precs.tex
+++ b/docs/src/precs.tex
@@ -200,7 +200,7 @@ An integer value; 0 means no error has been detected.
 
 \begin{verbatim}
 call prec%descr()
-call prec%descr(iout)
+call prec%descr(iout, root)
 \end{verbatim}
 
 \begin{description}
@@ -213,9 +213,16 @@ Intent: {\bf in}.\\
 Specified as: a preconditioner data structure \precdata.
 \item[iout] output unit.
 Scope: {\bf local} \\
-Type: {\bf optiona}\\
+Type: {\bf optional}\\
+Intent: {\bf in}.\\
+Specified as: an integer number. Default: default output unit.
+\item[root] Process from which to print
+Scope: {\bf local} \\
+Type: {\bf optional}\\
 Intent: {\bf in}.\\
-Specified as: an integer number. 
+Specified as: an integer number between 0 and $np-1$, in which case
+the specified process will print the description, or $-1$, in which case
+all processes will print. Default: 0. 
 \end{description}
 
 
diff --git a/prec/psb_c_base_prec_mod.f90 b/prec/psb_c_base_prec_mod.f90
index 25731b81..624b9c7c 100644
--- a/prec/psb_c_base_prec_mod.f90
+++ b/prec/psb_c_base_prec_mod.f90
@@ -60,6 +60,7 @@ module psb_c_base_prec_mod
     generic, public       :: apply     => c_apply, c_apply_v
     generic, public       :: build     => precbld
     generic, public       :: descr     => precdescr
+    procedure, pass(prec) :: desc_prefix => psb_c_base_desc_prefix
     procedure(psb_c_base_precbld), pass(prec), deferred :: precbld    
     procedure(psb_c_base_sizeof), pass(prec), deferred :: sizeof     
     procedure(psb_c_base_precinit), pass(prec), deferred :: precinit   
@@ -156,7 +157,7 @@ module psb_c_base_prec_mod
 
 
   abstract interface 
-    subroutine psb_c_base_precdescr(prec,iout)
+    subroutine psb_c_base_precdescr(prec,iout,root)
       import psb_ipk_, psb_spk_, psb_desc_type, psb_c_vect_type, &
            & psb_c_base_vect_type, psb_cspmat_type, psb_c_base_prec_type,&
            & psb_c_base_sparse_mat
@@ -164,6 +165,7 @@ module psb_c_base_prec_mod
 
       class(psb_c_base_prec_type), intent(in) :: prec
       integer(psb_ipk_), intent(in), optional    :: iout
+      integer(psb_ipk_), intent(in), optional    :: root
 
     end subroutine psb_c_base_precdescr
   end interface
@@ -289,4 +291,27 @@ contains
 
   end function psb_c_base_get_nzeros
 
+  function psb_c_base_desc_prefix(prec) result(res)
+    use psb_base_mod, only : psb_info, psb_root_
+    implicit none 
+    class(psb_c_base_prec_type), intent(in) :: prec
+    character(len=32) :: res 
+    !
+    character(len=32) :: frmtv
+    integer(psb_ipk_) :: ni, ictxt,iam,np
+
+    ictxt = prec%ictxt
+    call psb_info(ictxt,iam,np)
+    
+    res = ''
+    if (iam /= psb_root_) then
+      ni  = floor(log10(1.0*np)) + 1
+      write(frmtv,'(a,i8.8,a)') '(a,i',ni,',a)'
+      write(res,frmtv) 'Process ',iam,': Preconditioner: '
+    else
+      write(res,'(a)') 'Preconditioner: '
+    end if
+
+  end function psb_c_base_desc_prefix
+
 end module psb_c_base_prec_mod
diff --git a/prec/psb_c_bjacprec.f90 b/prec/psb_c_bjacprec.f90
index aac1b3c0..ceb60c61 100644
--- a/prec/psb_c_bjacprec.f90
+++ b/prec/psb_c_bjacprec.f90
@@ -133,17 +133,18 @@ module psb_c_bjacprec
 
 contains
 
-  subroutine psb_c_bjac_precdescr(prec,iout)
+  subroutine psb_c_bjac_precdescr(prec,iout,root)
     use psb_penv_mod
     use psb_error_mod
     implicit none 
 
     class(psb_c_bjac_prec_type), intent(in) :: prec
     integer(psb_ipk_), intent(in), optional    :: iout
+    integer(psb_ipk_), intent(in), optional    :: root
 
     integer(psb_ipk_) :: err_act, nrow, info
-    character(len=20)  :: name='c_bjac_precdescr'
-    integer(psb_ipk_) :: iout_, ictxt, iam, np 
+    character(len=20) :: name='c_bjac_precdescr'
+    integer(psb_ipk_) :: iout_, ictxt, iam, np, root_
 
     call psb_erractionsave(err_act)
 
@@ -154,17 +155,25 @@ contains
     else
       iout_ = 6 
     end if
+    if (present(root)) then 
+      root_ = root
+    else
+      root_ = psb_root_
+    end if
 
     if (.not.allocated(prec%iprcparm)) then 
       info = 1124
       call psb_errpush(info,name,a_err="preconditioner")
       goto 9999
     end if
+
     ictxt = prec%ictxt
     call psb_info(ictxt,iam,np)
-    
-    if (iam == psb_root_) &
-         & write(iout_,*) 'Block Jacobi with: ',&
+    if (root_ == -1) root_ = iam
+
+    if (iam == root_) &
+         &  write(iout_,*) trim(prec%desc_prefix()),' ',&
+         & 'Block Jacobi with: ',&
          &  fact_names(prec%iprcparm(psb_f_type_))
     
     call psb_erractionrestore(err_act)
diff --git a/prec/psb_c_diagprec.f90 b/prec/psb_c_diagprec.f90
index 3a1b5af9..a8267070 100644
--- a/prec/psb_c_diagprec.f90
+++ b/prec/psb_c_diagprec.f90
@@ -160,18 +160,18 @@ contains
   end subroutine psb_c_diag_precfree
   
 
-  subroutine psb_c_diag_precdescr(prec,iout)
+  subroutine psb_c_diag_precdescr(prec,iout,root)
     use psb_penv_mod
     use psb_error_mod
     Implicit None
 
     class(psb_c_diag_prec_type), intent(in) :: prec
     integer(psb_ipk_), intent(in), optional    :: iout
+    integer(psb_ipk_), intent(in), optional    :: root
 
     integer(psb_ipk_) :: err_act, nrow, info
     character(len=20)  :: name='c_diag_precdescr'
-
-    integer(psb_ipk_) :: iout_, ictxt, iam, np 
+    integer(psb_ipk_) :: iout_, ictxt, iam, np, root_
 
     call psb_erractionsave(err_act)
 
@@ -182,11 +182,20 @@ contains
     else
       iout_ = 6 
     end if
+    if (present(root)) then 
+      root_ = root
+    else
+      root_ = psb_root_
+    end if
+    
     ictxt = prec%ictxt
     call psb_info(ictxt,iam,np)
+  
+    if (root_ == -1) root_ = iam
     
-    if (iam == psb_root_) &
-         & write(iout_,*) 'Diagonal scaling'
+    if (iam == root_) &
+         &  write(iout_,*) trim(prec%desc_prefix()),' ',&
+         & 'Diagonal scaling'
 
     call psb_erractionsave(err_act)
 
diff --git a/prec/psb_c_nullprec.f90 b/prec/psb_c_nullprec.f90
index 59e71ce7..5304bff1 100644
--- a/prec/psb_c_nullprec.f90
+++ b/prec/psb_c_nullprec.f90
@@ -156,7 +156,7 @@ contains
   end subroutine psb_c_null_precfree
   
 
-  subroutine psb_c_null_precdescr(prec,iout)
+  subroutine psb_c_null_precdescr(prec,iout,root)
     use psb_penv_mod
     use psb_error_mod
     
@@ -164,10 +164,13 @@ contains
 
     class(psb_c_null_prec_type), intent(in) :: prec
     integer(psb_ipk_), intent(in), optional    :: iout
+    integer(psb_ipk_), intent(in), optional    :: root
 
     integer(psb_ipk_) :: err_act, nrow, info
     character(len=20)  :: name='c_null_precset'
-    integer(psb_ipk_) :: iout_, ictxt, iam, np 
+    character(len=32) :: dprefix, frmtv
+    integer(psb_ipk_) :: ni
+    integer(psb_ipk_) :: iout_, ictxt, iam, np, root_
 
     call psb_erractionsave(err_act)
 
@@ -178,11 +181,20 @@ contains
     else
       iout_ = 6 
     end if
+    if (present(root)) then 
+      root_ = root
+    else
+      root_ = psb_root_
+    end if
+
     ictxt = prec%ictxt
     call psb_info(ictxt,iam,np)
+    if (root_ == -1) root_ = iam
+
 
-    if (iam == psb_root_) &
-         & write(iout_,*) 'No preconditioning'
+    if (iam == root_) &
+         &  write(iout_,*) trim(prec%desc_prefix()),' ',&
+         & 'No preconditioning'
 
     call psb_erractionrestore(err_act)
     return
diff --git a/prec/psb_c_prec_type.f90 b/prec/psb_c_prec_type.f90
index 112acd8d..bace774a 100644
--- a/prec/psb_c_prec_type.f90
+++ b/prec/psb_c_prec_type.f90
@@ -148,11 +148,12 @@ module psb_c_prec_type
   
 contains
 
-  subroutine psb_cfile_prec_descr(prec,iout)
+  subroutine psb_cfile_prec_descr(prec,iout, root)
     use psb_base_mod
     implicit none 
     class(psb_cprec_type), intent(in) :: prec
     integer(psb_ipk_), intent(in), optional    :: iout
+    integer(psb_ipk_), intent(in), optional    :: root
     integer(psb_ipk_) :: iout_,info
     character(len=20) :: name='prec_descr' 
     
@@ -166,7 +167,7 @@ contains
       info = 1124
       call psb_errpush(info,name,a_err="preconditioner")
     end if
-    call prec%prec%descr(iout)
+    call prec%prec%descr(iout=iout,root=root)
     
   end subroutine psb_cfile_prec_descr
 
diff --git a/prec/psb_d_base_prec_mod.f90 b/prec/psb_d_base_prec_mod.f90
index 4bc18ec0..94550aa9 100644
--- a/prec/psb_d_base_prec_mod.f90
+++ b/prec/psb_d_base_prec_mod.f90
@@ -60,6 +60,7 @@ module psb_d_base_prec_mod
     generic, public       :: apply     => d_apply, d_apply_v
     generic, public       :: build     => precbld
     generic, public       :: descr     => precdescr
+    procedure, pass(prec) :: desc_prefix => psb_d_base_desc_prefix
     procedure(psb_d_base_precbld), pass(prec), deferred :: precbld    
     procedure(psb_d_base_sizeof), pass(prec), deferred :: sizeof     
     procedure(psb_d_base_precinit), pass(prec), deferred :: precinit   
@@ -156,7 +157,7 @@ module psb_d_base_prec_mod
 
 
   abstract interface 
-    subroutine psb_d_base_precdescr(prec,iout)
+    subroutine psb_d_base_precdescr(prec,iout,root)
       import psb_ipk_, psb_dpk_, psb_desc_type, psb_d_vect_type, &
            & psb_d_base_vect_type, psb_dspmat_type, psb_d_base_prec_type,&
            & psb_d_base_sparse_mat
@@ -164,6 +165,7 @@ module psb_d_base_prec_mod
 
       class(psb_d_base_prec_type), intent(in) :: prec
       integer(psb_ipk_), intent(in), optional    :: iout
+      integer(psb_ipk_), intent(in), optional    :: root
 
     end subroutine psb_d_base_precdescr
   end interface
@@ -289,4 +291,27 @@ contains
 
   end function psb_d_base_get_nzeros
 
+  function psb_d_base_desc_prefix(prec) result(res)
+    use psb_base_mod, only : psb_info, psb_root_
+    implicit none 
+    class(psb_d_base_prec_type), intent(in) :: prec
+    character(len=32) :: res 
+    !
+    character(len=32) :: frmtv
+    integer(psb_ipk_) :: ni, ictxt,iam,np
+
+    ictxt = prec%ictxt
+    call psb_info(ictxt,iam,np)
+    
+    res = ''
+    if (iam /= psb_root_) then
+      ni  = floor(log10(1.0*np)) + 1
+      write(frmtv,'(a,i8.8,a)') '(a,i',ni,',a)'
+      write(res,frmtv) 'Process ',iam,': Preconditioner: '
+    else
+      write(res,'(a)') 'Preconditioner: '
+    end if
+
+  end function psb_d_base_desc_prefix
+
 end module psb_d_base_prec_mod
diff --git a/prec/psb_d_bjacprec.f90 b/prec/psb_d_bjacprec.f90
index de561415..ee2616c9 100644
--- a/prec/psb_d_bjacprec.f90
+++ b/prec/psb_d_bjacprec.f90
@@ -133,17 +133,18 @@ module psb_d_bjacprec
 
 contains
 
-  subroutine psb_d_bjac_precdescr(prec,iout)
+  subroutine psb_d_bjac_precdescr(prec,iout,root)
     use psb_penv_mod
     use psb_error_mod
     implicit none 
 
     class(psb_d_bjac_prec_type), intent(in) :: prec
     integer(psb_ipk_), intent(in), optional    :: iout
+    integer(psb_ipk_), intent(in), optional    :: root
 
     integer(psb_ipk_) :: err_act, nrow, info
-    character(len=20)  :: name='d_bjac_precdescr'
-    integer(psb_ipk_) :: iout_, ictxt, iam, np 
+    character(len=20) :: name='d_bjac_precdescr'
+    integer(psb_ipk_) :: iout_, ictxt, iam, np, root_
 
     call psb_erractionsave(err_act)
 
@@ -154,17 +155,25 @@ contains
     else
       iout_ = 6 
     end if
+    if (present(root)) then 
+      root_ = root
+    else
+      root_ = psb_root_
+    end if
 
     if (.not.allocated(prec%iprcparm)) then 
       info = 1124
       call psb_errpush(info,name,a_err="preconditioner")
       goto 9999
     end if
+
     ictxt = prec%ictxt
     call psb_info(ictxt,iam,np)
-    
-    if (iam == psb_root_) &
-         & write(iout_,*) 'Block Jacobi with: ',&
+    if (root_ == -1) root_ = iam
+
+    if (iam == root_) &
+         &  write(iout_,*) trim(prec%desc_prefix()),' ',&
+         & 'Block Jacobi with: ',&
          &  fact_names(prec%iprcparm(psb_f_type_))
     
     call psb_erractionrestore(err_act)
diff --git a/prec/psb_d_diagprec.f90 b/prec/psb_d_diagprec.f90
index 2e6ef92d..227d4a04 100644
--- a/prec/psb_d_diagprec.f90
+++ b/prec/psb_d_diagprec.f90
@@ -160,18 +160,18 @@ contains
   end subroutine psb_d_diag_precfree
   
 
-  subroutine psb_d_diag_precdescr(prec,iout)
+  subroutine psb_d_diag_precdescr(prec,iout,root)
     use psb_penv_mod
     use psb_error_mod
     Implicit None
 
     class(psb_d_diag_prec_type), intent(in) :: prec
     integer(psb_ipk_), intent(in), optional    :: iout
+    integer(psb_ipk_), intent(in), optional    :: root
 
     integer(psb_ipk_) :: err_act, nrow, info
     character(len=20)  :: name='d_diag_precdescr'
-
-    integer(psb_ipk_) :: iout_, ictxt, iam, np 
+    integer(psb_ipk_) :: iout_, ictxt, iam, np, root_
 
     call psb_erractionsave(err_act)
 
@@ -182,11 +182,20 @@ contains
     else
       iout_ = 6 
     end if
+    if (present(root)) then 
+      root_ = root
+    else
+      root_ = psb_root_
+    end if
+    
     ictxt = prec%ictxt
     call psb_info(ictxt,iam,np)
+  
+    if (root_ == -1) root_ = iam
     
-    if (iam == psb_root_) &
-         & write(iout_,*) 'Diagonal scaling'
+    if (iam == root_) &
+         &  write(iout_,*) trim(prec%desc_prefix()),' ',&
+         & 'Diagonal scaling'
 
     call psb_erractionsave(err_act)
 
diff --git a/prec/psb_d_nullprec.f90 b/prec/psb_d_nullprec.f90
index acb03ec7..f9a3589e 100644
--- a/prec/psb_d_nullprec.f90
+++ b/prec/psb_d_nullprec.f90
@@ -156,7 +156,7 @@ contains
   end subroutine psb_d_null_precfree
   
 
-  subroutine psb_d_null_precdescr(prec,iout)
+  subroutine psb_d_null_precdescr(prec,iout,root)
     use psb_penv_mod
     use psb_error_mod
     
@@ -164,10 +164,13 @@ contains
 
     class(psb_d_null_prec_type), intent(in) :: prec
     integer(psb_ipk_), intent(in), optional    :: iout
+    integer(psb_ipk_), intent(in), optional    :: root
 
     integer(psb_ipk_) :: err_act, nrow, info
     character(len=20)  :: name='d_null_precset'
-    integer(psb_ipk_) :: iout_, ictxt, iam, np 
+    character(len=32) :: dprefix, frmtv
+    integer(psb_ipk_) :: ni
+    integer(psb_ipk_) :: iout_, ictxt, iam, np, root_
 
     call psb_erractionsave(err_act)
 
@@ -178,11 +181,20 @@ contains
     else
       iout_ = 6 
     end if
+    if (present(root)) then 
+      root_ = root
+    else
+      root_ = psb_root_
+    end if
+
     ictxt = prec%ictxt
     call psb_info(ictxt,iam,np)
+    if (root_ == -1) root_ = iam
+
 
-    if (iam == psb_root_) &
-         & write(iout_,*) 'No preconditioning'
+    if (iam == root_) &
+         &  write(iout_,*) trim(prec%desc_prefix()),' ',&
+         & 'No preconditioning'
 
     call psb_erractionrestore(err_act)
     return
diff --git a/prec/psb_d_prec_type.f90 b/prec/psb_d_prec_type.f90
index eb0fa5c8..97ec74b1 100644
--- a/prec/psb_d_prec_type.f90
+++ b/prec/psb_d_prec_type.f90
@@ -148,11 +148,12 @@ module psb_d_prec_type
   
 contains
 
-  subroutine psb_dfile_prec_descr(prec,iout)
+  subroutine psb_dfile_prec_descr(prec,iout, root)
     use psb_base_mod
     implicit none 
     class(psb_dprec_type), intent(in) :: prec
     integer(psb_ipk_), intent(in), optional    :: iout
+    integer(psb_ipk_), intent(in), optional    :: root
     integer(psb_ipk_) :: iout_,info
     character(len=20) :: name='prec_descr' 
     
@@ -166,7 +167,7 @@ contains
       info = 1124
       call psb_errpush(info,name,a_err="preconditioner")
     end if
-    call prec%prec%descr(iout)
+    call prec%prec%descr(iout=iout,root=root)
     
   end subroutine psb_dfile_prec_descr
 
diff --git a/prec/psb_s_base_prec_mod.f90 b/prec/psb_s_base_prec_mod.f90
index 46ff49fd..6440f703 100644
--- a/prec/psb_s_base_prec_mod.f90
+++ b/prec/psb_s_base_prec_mod.f90
@@ -60,6 +60,7 @@ module psb_s_base_prec_mod
     generic, public       :: apply     => s_apply, s_apply_v
     generic, public       :: build     => precbld
     generic, public       :: descr     => precdescr
+    procedure, pass(prec) :: desc_prefix => psb_s_base_desc_prefix
     procedure(psb_s_base_precbld), pass(prec), deferred :: precbld    
     procedure(psb_s_base_sizeof), pass(prec), deferred :: sizeof     
     procedure(psb_s_base_precinit), pass(prec), deferred :: precinit   
@@ -156,7 +157,7 @@ module psb_s_base_prec_mod
 
 
   abstract interface 
-    subroutine psb_s_base_precdescr(prec,iout)
+    subroutine psb_s_base_precdescr(prec,iout,root)
       import psb_ipk_, psb_spk_, psb_desc_type, psb_s_vect_type, &
            & psb_s_base_vect_type, psb_sspmat_type, psb_s_base_prec_type,&
            & psb_s_base_sparse_mat
@@ -164,6 +165,7 @@ module psb_s_base_prec_mod
 
       class(psb_s_base_prec_type), intent(in) :: prec
       integer(psb_ipk_), intent(in), optional    :: iout
+      integer(psb_ipk_), intent(in), optional    :: root
 
     end subroutine psb_s_base_precdescr
   end interface
@@ -289,4 +291,27 @@ contains
 
   end function psb_s_base_get_nzeros
 
+  function psb_s_base_desc_prefix(prec) result(res)
+    use psb_base_mod, only : psb_info, psb_root_
+    implicit none 
+    class(psb_s_base_prec_type), intent(in) :: prec
+    character(len=32) :: res 
+    !
+    character(len=32) :: frmtv
+    integer(psb_ipk_) :: ni, ictxt,iam,np
+
+    ictxt = prec%ictxt
+    call psb_info(ictxt,iam,np)
+    
+    res = ''
+    if (iam /= psb_root_) then
+      ni  = floor(log10(1.0*np)) + 1
+      write(frmtv,'(a,i8.8,a)') '(a,i',ni,',a)'
+      write(res,frmtv) 'Process ',iam,': Preconditioner: '
+    else
+      write(res,'(a)') 'Preconditioner: '
+    end if
+
+  end function psb_s_base_desc_prefix
+
 end module psb_s_base_prec_mod
diff --git a/prec/psb_s_bjacprec.f90 b/prec/psb_s_bjacprec.f90
index f07d023a..e8ec9b86 100644
--- a/prec/psb_s_bjacprec.f90
+++ b/prec/psb_s_bjacprec.f90
@@ -133,17 +133,18 @@ module psb_s_bjacprec
 
 contains
 
-  subroutine psb_s_bjac_precdescr(prec,iout)
+  subroutine psb_s_bjac_precdescr(prec,iout,root)
     use psb_penv_mod
     use psb_error_mod
     implicit none 
 
     class(psb_s_bjac_prec_type), intent(in) :: prec
     integer(psb_ipk_), intent(in), optional    :: iout
+    integer(psb_ipk_), intent(in), optional    :: root
 
     integer(psb_ipk_) :: err_act, nrow, info
-    character(len=20)  :: name='s_bjac_precdescr'
-    integer(psb_ipk_) :: iout_, ictxt, iam, np 
+    character(len=20) :: name='s_bjac_precdescr'
+    integer(psb_ipk_) :: iout_, ictxt, iam, np, root_
 
     call psb_erractionsave(err_act)
 
@@ -154,17 +155,25 @@ contains
     else
       iout_ = 6 
     end if
+    if (present(root)) then 
+      root_ = root
+    else
+      root_ = psb_root_
+    end if
 
     if (.not.allocated(prec%iprcparm)) then 
       info = 1124
       call psb_errpush(info,name,a_err="preconditioner")
       goto 9999
     end if
+
     ictxt = prec%ictxt
     call psb_info(ictxt,iam,np)
-    
-    if (iam == psb_root_) &
-         & write(iout_,*) 'Block Jacobi with: ',&
+    if (root_ == -1) root_ = iam
+
+    if (iam == root_) &
+         &  write(iout_,*) trim(prec%desc_prefix()),' ',&
+         & 'Block Jacobi with: ',&
          &  fact_names(prec%iprcparm(psb_f_type_))
     
     call psb_erractionrestore(err_act)
diff --git a/prec/psb_s_diagprec.f90 b/prec/psb_s_diagprec.f90
index a97e18d7..cf7c5991 100644
--- a/prec/psb_s_diagprec.f90
+++ b/prec/psb_s_diagprec.f90
@@ -160,18 +160,18 @@ contains
   end subroutine psb_s_diag_precfree
   
 
-  subroutine psb_s_diag_precdescr(prec,iout)
+  subroutine psb_s_diag_precdescr(prec,iout,root)
     use psb_penv_mod
     use psb_error_mod
     Implicit None
 
     class(psb_s_diag_prec_type), intent(in) :: prec
     integer(psb_ipk_), intent(in), optional    :: iout
+    integer(psb_ipk_), intent(in), optional    :: root
 
     integer(psb_ipk_) :: err_act, nrow, info
     character(len=20)  :: name='s_diag_precdescr'
-
-    integer(psb_ipk_) :: iout_, ictxt, iam, np 
+    integer(psb_ipk_) :: iout_, ictxt, iam, np, root_
 
     call psb_erractionsave(err_act)
 
@@ -182,11 +182,20 @@ contains
     else
       iout_ = 6 
     end if
+    if (present(root)) then 
+      root_ = root
+    else
+      root_ = psb_root_
+    end if
+    
     ictxt = prec%ictxt
     call psb_info(ictxt,iam,np)
+  
+    if (root_ == -1) root_ = iam
     
-    if (iam == psb_root_) &
-         & write(iout_,*) 'Diagonal scaling'
+    if (iam == root_) &
+         &  write(iout_,*) trim(prec%desc_prefix()),' ',&
+         & 'Diagonal scaling'
 
     call psb_erractionsave(err_act)
 
diff --git a/prec/psb_s_nullprec.f90 b/prec/psb_s_nullprec.f90
index 453b7716..8247573d 100644
--- a/prec/psb_s_nullprec.f90
+++ b/prec/psb_s_nullprec.f90
@@ -156,7 +156,7 @@ contains
   end subroutine psb_s_null_precfree
   
 
-  subroutine psb_s_null_precdescr(prec,iout)
+  subroutine psb_s_null_precdescr(prec,iout,root)
     use psb_penv_mod
     use psb_error_mod
     
@@ -164,10 +164,13 @@ contains
 
     class(psb_s_null_prec_type), intent(in) :: prec
     integer(psb_ipk_), intent(in), optional    :: iout
+    integer(psb_ipk_), intent(in), optional    :: root
 
     integer(psb_ipk_) :: err_act, nrow, info
     character(len=20)  :: name='s_null_precset'
-    integer(psb_ipk_) :: iout_, ictxt, iam, np 
+    character(len=32) :: dprefix, frmtv
+    integer(psb_ipk_) :: ni
+    integer(psb_ipk_) :: iout_, ictxt, iam, np, root_
 
     call psb_erractionsave(err_act)
 
@@ -178,11 +181,20 @@ contains
     else
       iout_ = 6 
     end if
+    if (present(root)) then 
+      root_ = root
+    else
+      root_ = psb_root_
+    end if
+
     ictxt = prec%ictxt
     call psb_info(ictxt,iam,np)
+    if (root_ == -1) root_ = iam
+
 
-    if (iam == psb_root_) &
-         & write(iout_,*) 'No preconditioning'
+    if (iam == root_) &
+         &  write(iout_,*) trim(prec%desc_prefix()),' ',&
+         & 'No preconditioning'
 
     call psb_erractionrestore(err_act)
     return
diff --git a/prec/psb_s_prec_type.f90 b/prec/psb_s_prec_type.f90
index ef4ffc21..957e6f17 100644
--- a/prec/psb_s_prec_type.f90
+++ b/prec/psb_s_prec_type.f90
@@ -148,11 +148,12 @@ module psb_s_prec_type
   
 contains
 
-  subroutine psb_sfile_prec_descr(prec,iout)
+  subroutine psb_sfile_prec_descr(prec,iout, root)
     use psb_base_mod
     implicit none 
     class(psb_sprec_type), intent(in) :: prec
     integer(psb_ipk_), intent(in), optional    :: iout
+    integer(psb_ipk_), intent(in), optional    :: root
     integer(psb_ipk_) :: iout_,info
     character(len=20) :: name='prec_descr' 
     
@@ -166,7 +167,7 @@ contains
       info = 1124
       call psb_errpush(info,name,a_err="preconditioner")
     end if
-    call prec%prec%descr(iout)
+    call prec%prec%descr(iout=iout,root=root)
     
   end subroutine psb_sfile_prec_descr
 
diff --git a/prec/psb_z_base_prec_mod.f90 b/prec/psb_z_base_prec_mod.f90
index 05e37358..3507f9dc 100644
--- a/prec/psb_z_base_prec_mod.f90
+++ b/prec/psb_z_base_prec_mod.f90
@@ -60,6 +60,7 @@ module psb_z_base_prec_mod
     generic, public       :: apply     => z_apply, z_apply_v
     generic, public       :: build     => precbld
     generic, public       :: descr     => precdescr
+    procedure, pass(prec) :: desc_prefix => psb_z_base_desc_prefix
     procedure(psb_z_base_precbld), pass(prec), deferred :: precbld    
     procedure(psb_z_base_sizeof), pass(prec), deferred :: sizeof     
     procedure(psb_z_base_precinit), pass(prec), deferred :: precinit   
@@ -156,7 +157,7 @@ module psb_z_base_prec_mod
 
 
   abstract interface 
-    subroutine psb_z_base_precdescr(prec,iout)
+    subroutine psb_z_base_precdescr(prec,iout,root)
       import psb_ipk_, psb_dpk_, psb_desc_type, psb_z_vect_type, &
            & psb_z_base_vect_type, psb_zspmat_type, psb_z_base_prec_type,&
            & psb_z_base_sparse_mat
@@ -164,6 +165,7 @@ module psb_z_base_prec_mod
 
       class(psb_z_base_prec_type), intent(in) :: prec
       integer(psb_ipk_), intent(in), optional    :: iout
+      integer(psb_ipk_), intent(in), optional    :: root
 
     end subroutine psb_z_base_precdescr
   end interface
@@ -289,4 +291,27 @@ contains
 
   end function psb_z_base_get_nzeros
 
+  function psb_z_base_desc_prefix(prec) result(res)
+    use psb_base_mod, only : psb_info, psb_root_
+    implicit none 
+    class(psb_z_base_prec_type), intent(in) :: prec
+    character(len=32) :: res 
+    !
+    character(len=32) :: frmtv
+    integer(psb_ipk_) :: ni, ictxt,iam,np
+
+    ictxt = prec%ictxt
+    call psb_info(ictxt,iam,np)
+    
+    res = ''
+    if (iam /= psb_root_) then
+      ni  = floor(log10(1.0*np)) + 1
+      write(frmtv,'(a,i8.8,a)') '(a,i',ni,',a)'
+      write(res,frmtv) 'Process ',iam,': Preconditioner: '
+    else
+      write(res,'(a)') 'Preconditioner: '
+    end if
+
+  end function psb_z_base_desc_prefix
+
 end module psb_z_base_prec_mod
diff --git a/prec/psb_z_bjacprec.f90 b/prec/psb_z_bjacprec.f90
index 64ede43d..2c63b002 100644
--- a/prec/psb_z_bjacprec.f90
+++ b/prec/psb_z_bjacprec.f90
@@ -133,17 +133,18 @@ module psb_z_bjacprec
 
 contains
 
-  subroutine psb_z_bjac_precdescr(prec,iout)
+  subroutine psb_z_bjac_precdescr(prec,iout,root)
     use psb_penv_mod
     use psb_error_mod
     implicit none 
 
     class(psb_z_bjac_prec_type), intent(in) :: prec
     integer(psb_ipk_), intent(in), optional    :: iout
+    integer(psb_ipk_), intent(in), optional    :: root
 
     integer(psb_ipk_) :: err_act, nrow, info
-    character(len=20)  :: name='z_bjac_precdescr'
-    integer(psb_ipk_) :: iout_, ictxt, iam, np 
+    character(len=20) :: name='z_bjac_precdescr'
+    integer(psb_ipk_) :: iout_, ictxt, iam, np, root_
 
     call psb_erractionsave(err_act)
 
@@ -154,17 +155,25 @@ contains
     else
       iout_ = 6 
     end if
+    if (present(root)) then 
+      root_ = root
+    else
+      root_ = psb_root_
+    end if
 
     if (.not.allocated(prec%iprcparm)) then 
       info = 1124
       call psb_errpush(info,name,a_err="preconditioner")
       goto 9999
     end if
+
     ictxt = prec%ictxt
     call psb_info(ictxt,iam,np)
-    
-    if (iam == psb_root_) &
-         & write(iout_,*) 'Block Jacobi with: ',&
+    if (root_ == -1) root_ = iam
+
+    if (iam == root_) &
+         &  write(iout_,*) trim(prec%desc_prefix()),' ',&
+         & 'Block Jacobi with: ',&
          &  fact_names(prec%iprcparm(psb_f_type_))
     
     call psb_erractionrestore(err_act)
diff --git a/prec/psb_z_diagprec.f90 b/prec/psb_z_diagprec.f90
index db2569f0..7ddc168a 100644
--- a/prec/psb_z_diagprec.f90
+++ b/prec/psb_z_diagprec.f90
@@ -160,18 +160,18 @@ contains
   end subroutine psb_z_diag_precfree
   
 
-  subroutine psb_z_diag_precdescr(prec,iout)
+  subroutine psb_z_diag_precdescr(prec,iout,root)
     use psb_penv_mod
     use psb_error_mod
     Implicit None
 
     class(psb_z_diag_prec_type), intent(in) :: prec
     integer(psb_ipk_), intent(in), optional    :: iout
+    integer(psb_ipk_), intent(in), optional    :: root
 
     integer(psb_ipk_) :: err_act, nrow, info
     character(len=20)  :: name='z_diag_precdescr'
-
-    integer(psb_ipk_) :: iout_, ictxt, iam, np 
+    integer(psb_ipk_) :: iout_, ictxt, iam, np, root_
 
     call psb_erractionsave(err_act)
 
@@ -182,11 +182,20 @@ contains
     else
       iout_ = 6 
     end if
+    if (present(root)) then 
+      root_ = root
+    else
+      root_ = psb_root_
+    end if
+    
     ictxt = prec%ictxt
     call psb_info(ictxt,iam,np)
+  
+    if (root_ == -1) root_ = iam
     
-    if (iam == psb_root_) &
-         & write(iout_,*) 'Diagonal scaling'
+    if (iam == root_) &
+         &  write(iout_,*) trim(prec%desc_prefix()),' ',&
+         & 'Diagonal scaling'
 
     call psb_erractionsave(err_act)
 
diff --git a/prec/psb_z_nullprec.f90 b/prec/psb_z_nullprec.f90
index 7e69de01..d8c4f0ab 100644
--- a/prec/psb_z_nullprec.f90
+++ b/prec/psb_z_nullprec.f90
@@ -156,7 +156,7 @@ contains
   end subroutine psb_z_null_precfree
   
 
-  subroutine psb_z_null_precdescr(prec,iout)
+  subroutine psb_z_null_precdescr(prec,iout,root)
     use psb_penv_mod
     use psb_error_mod
     
@@ -164,10 +164,13 @@ contains
 
     class(psb_z_null_prec_type), intent(in) :: prec
     integer(psb_ipk_), intent(in), optional    :: iout
+    integer(psb_ipk_), intent(in), optional    :: root
 
     integer(psb_ipk_) :: err_act, nrow, info
     character(len=20)  :: name='z_null_precset'
-    integer(psb_ipk_) :: iout_, ictxt, iam, np 
+    character(len=32) :: dprefix, frmtv
+    integer(psb_ipk_) :: ni
+    integer(psb_ipk_) :: iout_, ictxt, iam, np, root_
 
     call psb_erractionsave(err_act)
 
@@ -178,11 +181,20 @@ contains
     else
       iout_ = 6 
     end if
+    if (present(root)) then 
+      root_ = root
+    else
+      root_ = psb_root_
+    end if
+
     ictxt = prec%ictxt
     call psb_info(ictxt,iam,np)
+    if (root_ == -1) root_ = iam
+
 
-    if (iam == psb_root_) &
-         & write(iout_,*) 'No preconditioning'
+    if (iam == root_) &
+         &  write(iout_,*) trim(prec%desc_prefix()),' ',&
+         & 'No preconditioning'
 
     call psb_erractionrestore(err_act)
     return
diff --git a/prec/psb_z_prec_type.f90 b/prec/psb_z_prec_type.f90
index 680c2a70..09141385 100644
--- a/prec/psb_z_prec_type.f90
+++ b/prec/psb_z_prec_type.f90
@@ -148,11 +148,12 @@ module psb_z_prec_type
   
 contains
 
-  subroutine psb_zfile_prec_descr(prec,iout)
+  subroutine psb_zfile_prec_descr(prec,iout, root)
     use psb_base_mod
     implicit none 
     class(psb_zprec_type), intent(in) :: prec
     integer(psb_ipk_), intent(in), optional    :: iout
+    integer(psb_ipk_), intent(in), optional    :: root
     integer(psb_ipk_) :: iout_,info
     character(len=20) :: name='prec_descr' 
     
@@ -166,7 +167,7 @@ contains
       info = 1124
       call psb_errpush(info,name,a_err="preconditioner")
     end if
-    call prec%prec%descr(iout)
+    call prec%prec%descr(iout=iout,root=root)
     
   end subroutine psb_zfile_prec_descr
 


 
$res$
 $x$
 Subroutine