<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!--Converted with LaTeX2HTML 2018 (Released Feb 1, 2018) --> <HTML> <HEAD> <TITLE>Method hierarchy_build</TITLE> <META NAME="description" CONTENT="Method hierarchy_build"> <META NAME="keywords" CONTENT="userhtml"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <META NAME="Generator" CONTENT="LaTeX2HTML v2018"> <META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"> <LINK REL="STYLESHEET" HREF="userhtml.css"> <LINK REL="next" HREF="node22.html"> <LINK REL="previous" HREF="node20.html"> <LINK REL="up" HREF="node18.html"> <LINK REL="next" HREF="node22.html"> </HEAD> <BODY > <DIV CLASS="navigation"><!--Navigation Panel--> <A NAME="tex2html356" HREF="node22.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> <A NAME="tex2html352" HREF="node18.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> <A NAME="tex2html346" HREF="node20.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> <A NAME="tex2html354" HREF="node2.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A> <BR> <B> Next:</B> <A NAME="tex2html357" HREF="node22.html">Method smoothers_build</A> <B> Up:</B> <A NAME="tex2html353" HREF="node18.html">User Interface</A> <B> Previous:</B> <A NAME="tex2html347" HREF="node20.html">Method set</A> <B> <A NAME="tex2html355" HREF="node2.html">Contents</A></B> <BR> <BR></DIV> <!--End of Navigation Panel--> <H2><A NAME="SECTION00083000000000000000"></A><A NAME="sec:hier_bld"></A> <BR> Method hierarchy_build </H2><BIG CLASS="LARGE"><BIG CLASS="LARGE"></BIG></BIG> <P> <BIG CLASS="LARGE"><BIG CLASS="LARGE"></BIG></BIG> <DIV ALIGN="CENTER"><BIG CLASS="LARGE"><BIG CLASS="LARGE"><BIG CLASS="LARGE"><code>call p%hierarchy_build(a,desc_a,info)</code> <BR></BIG></BIG></BIG></DIV><BIG CLASS="LARGE"><BIG CLASS="LARGE"></BIG></BIG> <P> <BIG CLASS="LARGE"><BIG CLASS="LARGE"><BIG CLASS="LARGE"> This method builds the hierarchy of matrices and restriction/prolongation operators for the multilevel preconditioner <code>p</code>, according to the requirements made by the user through the methods <code>init</code> and <code>set</code>. </BIG></BIG></BIG> <P> <BIG CLASS="LARGE"><BIG CLASS="LARGE"><BIG CLASS="LARGE"><BIG CLASS="LARGE"><B>Arguments</B></BIG> </BIG></BIG></BIG> <P></P> <BIG CLASS="LARGE"><BIG CLASS="LARGE"></BIG></BIG> <P> <BIG CLASS="LARGE"><BIG CLASS="LARGE"></BIG></BIG><TABLE CELLPADDING=3> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34><BIG CLASS="LARGE"><BIG CLASS="LARGE"><BIG CLASS="LARGE"> <code>a</code> </BIG></BIG></BIG></TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><BIG CLASS="LARGE"><BIG CLASS="LARGE"><BIG CLASS="LARGE"> <code>type(psb_</code><SPAN CLASS="textit">x</SPAN><code>spmat_type), intent(in)</code>. </BIG></BIG></BIG></TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34><BIG CLASS="LARGE"><BIG CLASS="LARGE"><BIG CLASS="LARGE"> </BIG></BIG></BIG></TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><BIG CLASS="LARGE"><BIG CLASS="LARGE"><BIG CLASS="LARGE"> The sparse matrix structure containing the local part of the matrix to be preconditioned. Note that <SPAN CLASS="textit">x</SPAN> must be chosen according to the real/complex, single/double precision version of MLD2P4 under use. See the PSBLAS User's Guide for details [<A HREF="node36.html#PSBLASGUIDE">13</A>].</BIG></BIG></BIG></TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34><BIG CLASS="LARGE"><BIG CLASS="LARGE"><BIG CLASS="LARGE"> <code>desc_a</code> </BIG></BIG></BIG></TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><BIG CLASS="LARGE"><BIG CLASS="LARGE"><BIG CLASS="LARGE"> <code>type(psb_desc_type), intent(in)</code>. </BIG></BIG></BIG></TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34><BIG CLASS="LARGE"><BIG CLASS="LARGE"><BIG CLASS="LARGE"> </BIG></BIG></BIG></TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><BIG CLASS="LARGE"><BIG CLASS="LARGE"><BIG CLASS="LARGE"> The communication descriptor of <code>a</code>. See the PSBLAS User's Guide for details [<A HREF="node36.html#PSBLASGUIDE">13</A>].</BIG></BIG></BIG></TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34><BIG CLASS="LARGE"><BIG CLASS="LARGE"><BIG CLASS="LARGE"> <code>info</code> </BIG></BIG></BIG></TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><BIG CLASS="LARGE"><BIG CLASS="LARGE"><BIG CLASS="LARGE"> <code>integer, intent(out)</code>.</BIG></BIG></BIG></TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34><BIG CLASS="LARGE"><BIG CLASS="LARGE"><BIG CLASS="LARGE"> </BIG></BIG></BIG></TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><BIG CLASS="LARGE"><BIG CLASS="LARGE"><BIG CLASS="LARGE"> Error code. If no error, 0 is returned. See Section <A HREF="node34.html#sec:errors">8</A> for details.</BIG></BIG></BIG></TD> </TR> </TABLE><BIG CLASS="LARGE"><BIG CLASS="LARGE"></BIG></BIG> <P> <BIG CLASS="LARGE"><BIG CLASS="LARGE"></BIG></BIG> <P> <BIG CLASS="LARGE"><BIG CLASS="LARGE"></BIG></BIG> <DIV CLASS="navigation"><HR> <!--Navigation Panel--> <A NAME="tex2html356" HREF="node22.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> <A NAME="tex2html352" HREF="node18.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> <A NAME="tex2html346" HREF="node20.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> <A NAME="tex2html354" HREF="node2.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A> <BR> <B> Next:</B> <A NAME="tex2html357" HREF="node22.html">Method smoothers_build</A> <B> Up:</B> <A NAME="tex2html353" HREF="node18.html">User Interface</A> <B> Previous:</B> <A NAME="tex2html347" HREF="node20.html">Method set</A> <B> <A NAME="tex2html355" HREF="node2.html">Contents</A></B> </DIV> <!--End of Navigation Panel--> </BODY> </HTML>