<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html > <head><title>Method hierarchy_build</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <meta name="generator" content="TeX4ht (http://www.tug.org/tex4ht/)"> <meta name="originator" content="TeX4ht (http://www.tug.org/tex4ht/)"> <!-- html,3 --> <meta name="src" content="userhtml.tex"> <link rel="stylesheet" type="text/css" href="userhtml.css"> </head><body > <!--l. 662--><div class="crosslinks"><p class="noindent"><span class="cmr-12">[</span><a href="userhtmlsu13.html" ><span class="cmr-12">next</span></a><span class="cmr-12">] [</span><a href="userhtmlsu11.html" ><span class="cmr-12">prev</span></a><span class="cmr-12">] [</span><a href="userhtmlsu11.html#tailuserhtmlsu11.html" ><span class="cmr-12">prev-tail</span></a><span class="cmr-12">] [</span><a href="#tailuserhtmlsu12.html"><span class="cmr-12">tail</span></a><span class="cmr-12">] [</span><a href="userhtmlse6.html#userhtmlsu12.html" ><span class="cmr-12">up</span></a><span class="cmr-12">] </span></p></div> <h4 class="subsectionHead"><span class="titlemark"><span class="cmr-12">6.3 </span></span> <a id="x22-210006.3"></a><span class="cmr-12">Method hierarchy</span><span class="cmr-12">_build</span></h4> <div class="center" > <!--l. 664--><p class="noindent" > <!--l. 665--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span class="cmtt-12">call</span><span class="cmtt-12"> p%hierarchy_build(a,desc_a,info)</span></span></span><br /> </div> <!--l. 668--><p class="noindent" ><span class="cmr-12">This method builds the hierarchy of matrices and restriction/prolongation operators for</span> <span class="cmr-12">the multilevel preconditioner </span><span class="obeylines-h"><span class="verb"><span class="cmtt-12">p</span></span></span><span class="cmr-12">, according to the requirements made by the user</span> <span class="cmr-12">through the methods </span><span class="obeylines-h"><span class="verb"><span class="cmtt-12">init</span></span></span> <span class="cmr-12">and </span><span class="obeylines-h"><span class="verb"><span class="cmtt-12">set</span></span></span><span class="cmr-12">.</span> <!--l. 673--><p class="noindent" ><span class="cmbx-12">Arguments</span> <div class="tabular"> <table id="TBL-11" class="tabular" cellspacing="0" cellpadding="0" ><colgroup id="TBL-11-1g"><col id="TBL-11-1"><col id="TBL-11-2"></colgroup><tr style="vertical-align:baseline;" id="TBL-11-1-"><td style="white-space:wrap; text-align:left;" id="TBL-11-1-1" class="td11"><!--l. 676--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span class="cmtt-12">a</span></span></span> </td><td style="white-space:wrap; text-align:left;" id="TBL-11-1-2" class="td11"><!--l. 676--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span class="cmtt-12">type(psb_</span></span></span><span class="cmti-12">x</span><span class="obeylines-h"><span class="verb"><span class="cmtt-12">spmat_type),</span><span class="cmtt-12"> intent(in)</span></span></span><span class="cmr-12">.</span> </td> </tr><tr style="vertical-align:baseline;" id="TBL-11-2-"><td style="white-space:wrap; text-align:left;" id="TBL-11-2-1" class="td11"><!--l. 677--><p class="noindent" > </td><td style="white-space:wrap; text-align:left;" id="TBL-11-2-2" class="td11"><!--l. 677--><p class="noindent" ><span class="cmr-12">The sparse matrix structure containing the local part of the matrix</span> <span class="cmr-12">to be preconditioned. Note that </span><span class="cmti-12">x </span><span class="cmr-12">must be chosen according to</span> <span class="cmr-12">the real/complex, single/double precision version of MLD2P4 under</span> <span class="cmr-12">use. See the PSBLAS User’s Guide for details </span><span class="cite"><span class="cmr-12">[</span><a href="userhtmlli4.html#XPSBLASGUIDE"><span class="cmr-12">13</span></a><span class="cmr-12">]</span></span><span class="cmr-12">.</span> </td> </tr><tr style="vertical-align:baseline;" id="TBL-11-3-"><td style="white-space:wrap; text-align:left;" id="TBL-11-3-1" class="td11"><!--l. 682--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span class="cmtt-12">desc_a</span></span></span></td><td style="white-space:wrap; text-align:left;" id="TBL-11-3-2" class="td11"><!--l. 682--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span class="cmtt-12">type(psb_desc_type),</span><span class="cmtt-12"> intent(in)</span></span></span><span class="cmr-12">.</span> </td> </tr><tr style="vertical-align:baseline;" id="TBL-11-4-"><td style="white-space:wrap; text-align:left;" id="TBL-11-4-1" class="td11"><!--l. 683--><p class="noindent" > </td><td style="white-space:wrap; text-align:left;" id="TBL-11-4-2" class="td11"><!--l. 683--><p class="noindent" ><span class="cmr-12">The communication descriptor of </span><span class="obeylines-h"><span class="verb"><span class="cmtt-12">a</span></span></span><span class="cmr-12">. See the PSBLAS User’s Guide</span> <span class="cmr-12">for details </span><span class="cite"><span class="cmr-12">[</span><a href="userhtmlli4.html#XPSBLASGUIDE"><span class="cmr-12">13</span></a><span class="cmr-12">]</span></span><span class="cmr-12">.</span> </td> </tr><tr style="vertical-align:baseline;" id="TBL-11-5-"><td style="white-space:wrap; text-align:left;" id="TBL-11-5-1" class="td11"><!--l. 688--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span class="cmtt-12">info</span></span></span> </td><td style="white-space:wrap; text-align:left;" id="TBL-11-5-2" class="td11"><!--l. 688--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span class="cmtt-12">integer,</span><span class="cmtt-12"> intent(out)</span></span></span><span class="cmr-12">.</span> </td> </tr><tr style="vertical-align:baseline;" id="TBL-11-6-"><td style="white-space:wrap; text-align:left;" id="TBL-11-6-1" class="td11"><!--l. 689--><p class="noindent" > </td><td style="white-space:wrap; text-align:left;" id="TBL-11-6-2" class="td11"><!--l. 689--><p class="noindent" ><span class="cmr-12">Error code. If no error, 0 is returned. See Section</span><span class="cmr-12"> </span><a href="userhtmlse8.html#x30-340008"><span class="cmr-12">8</span><!--tex4ht:ref: sec:errors --></a> <span class="cmr-12">for details.</span> </td> </tr><tr style="vertical-align:baseline;" id="TBL-11-7-"><td style="white-space:wrap; text-align:left;" id="TBL-11-7-1" class="td11"> </td> </tr></table></div> <!--l. 695--><div class="crosslinks"><p class="noindent"><span class="cmr-12">[</span><a href="userhtmlsu13.html" ><span class="cmr-12">next</span></a><span class="cmr-12">] [</span><a href="userhtmlsu11.html" ><span class="cmr-12">prev</span></a><span class="cmr-12">] [</span><a href="userhtmlsu11.html#tailuserhtmlsu11.html" ><span class="cmr-12">prev-tail</span></a><span class="cmr-12">] [</span><a href="userhtmlsu12.html" ><span class="cmr-12">front</span></a><span class="cmr-12">] [</span><a href="userhtmlse6.html#userhtmlsu12.html" ><span class="cmr-12">up</span></a><span class="cmr-12">] </span></p></div> <!--l. 695--><p class="indent" > <a id="tailuserhtmlsu12.html"></a> </body></html>