You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
145 lines
4.9 KiB
HTML
145 lines
4.9 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
|
|
|
|
<!--Converted with LaTeX2HTML 2012 (1.2)
|
|
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>Subroutine build</TITLE>
|
|
<META NAME="description" CONTENT="Subroutine build">
|
|
<META NAME="keywords" CONTENT="userhtml">
|
|
<META NAME="resource-type" CONTENT="document">
|
|
<META NAME="distribution" CONTENT="global">
|
|
|
|
<META NAME="Generator" CONTENT="LaTeX2HTML v2012">
|
|
<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
|
|
|
|
<LINK REL="STYLESHEET" HREF="userhtml.css">
|
|
|
|
<LINK REL="next" HREF="node19.html">
|
|
<LINK REL="previous" HREF="node17.html">
|
|
<LINK REL="up" HREF="node15.html">
|
|
<LINK REL="next" HREF="node19.html">
|
|
</HEAD>
|
|
|
|
<BODY >
|
|
<!--Navigation Panel-->
|
|
<A NAME="tex2html297"
|
|
HREF="node19.html">
|
|
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A>
|
|
<A NAME="tex2html293"
|
|
HREF="node15.html">
|
|
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A>
|
|
<A NAME="tex2html287"
|
|
HREF="node17.html">
|
|
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A>
|
|
<A NAME="tex2html295"
|
|
HREF="node2.html">
|
|
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A>
|
|
<BR>
|
|
<B> Next:</B> <A NAME="tex2html298"
|
|
HREF="node19.html">Subroutine hierarchy_build</A>
|
|
<B> Up:</B> <A NAME="tex2html294"
|
|
HREF="node15.html">User Interface</A>
|
|
<B> Previous:</B> <A NAME="tex2html288"
|
|
HREF="node17.html">Subroutine set</A>
|
|
<B> <A NAME="tex2html296"
|
|
HREF="node2.html">Contents</A></B>
|
|
<BR>
|
|
<BR>
|
|
<!--End of Navigation Panel-->
|
|
|
|
<H2><A NAME="SECTION00083000000000000000"></A><A NAME="sec:precbld"></A>
|
|
<BR>
|
|
Subroutine build
|
|
</H2>
|
|
|
|
<P>
|
|
<DIV ALIGN="CENTER">
|
|
<code>call p%build(a,desc_a,info)</code>
|
|
<BR>
|
|
</DIV>
|
|
|
|
<P>
|
|
This routine builds the one-level preconditioner <code>p</code> according to the requirements
|
|
made by the user through the routines <code>init</code> and <code>set</code>
|
|
(see Sections <A HREF="node19.html#sec:hier_bld">6.4</A> and <A HREF="node20.html#sec:smooth_bld">6.5</A> for multi-level preconditioners).
|
|
|
|
<P>
|
|
<FONT SIZE="+1"><B>Arguments</B></FONT>
|
|
<P></P>
|
|
|
|
<P>
|
|
<TABLE CELLPADDING=3>
|
|
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34><code>a</code></TD>
|
|
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><code>type(psb_</code><I>x</I><code>spmat_type), intent(in)</code>.</TD>
|
|
</TR>
|
|
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34> </TD>
|
|
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>The sparse matrix structure containing the local part of the
|
|
matrix to be preconditioned. Note that <I>x</I> 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="node26.html#PSBLASGUIDE">13</A>].</TD>
|
|
</TR>
|
|
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34><code>desc_a</code></TD>
|
|
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><code>type(psb_desc_type), intent(in)</code>.</TD>
|
|
</TR>
|
|
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34> </TD>
|
|
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>The communication descriptor of <code>a</code>. See the PSBLAS User's Guide for
|
|
details [<A
|
|
HREF="node26.html#PSBLASGUIDE">13</A>].</TD>
|
|
</TR>
|
|
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34><code>info</code></TD>
|
|
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><code>integer, intent(out)</code>.</TD>
|
|
</TR>
|
|
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34> </TD>
|
|
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Error code. If no error, 0 is returned. See Section <A HREF="node24.html#sec:errors">7</A> for details.</TD>
|
|
</TR>
|
|
</TABLE>
|
|
|
|
<P>
|
|
For compatibility with the previous versions of MLD2P4, this routine can be also invoked
|
|
as follows:
|
|
|
|
<P>
|
|
<DIV ALIGN="CENTER">
|
|
<code>call mld_precbld(p,what,val,info)</code>
|
|
|
|
</DIV>
|
|
|
|
<P>
|
|
In this case, the routine can be used to build multi-level preconditioners too.
|
|
|
|
<P>
|
|
|
|
<P>
|
|
<HR>
|
|
<!--Navigation Panel-->
|
|
<A NAME="tex2html297"
|
|
HREF="node19.html">
|
|
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A>
|
|
<A NAME="tex2html293"
|
|
HREF="node15.html">
|
|
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A>
|
|
<A NAME="tex2html287"
|
|
HREF="node17.html">
|
|
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A>
|
|
<A NAME="tex2html295"
|
|
HREF="node2.html">
|
|
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A>
|
|
<BR>
|
|
<B> Next:</B> <A NAME="tex2html298"
|
|
HREF="node19.html">Subroutine hierarchy_build</A>
|
|
<B> Up:</B> <A NAME="tex2html294"
|
|
HREF="node15.html">User Interface</A>
|
|
<B> Previous:</B> <A NAME="tex2html288"
|
|
HREF="node17.html">Subroutine set</A>
|
|
<B> <A NAME="tex2html296"
|
|
HREF="node2.html">Contents</A></B>
|
|
<!--End of Navigation Panel-->
|
|
|
|
</BODY>
|
|
</HTML>
|