<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <!--Converted with LaTeX2HTML 2008 (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_cdins -- Communication descriptor insert routine</TITLE> <META NAME="description" CONTENT="psb_cdins -- Communication descriptor insert routine"> <META NAME="keywords" CONTENT="userhtml"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <META NAME="Generator" CONTENT="LaTeX2HTML v2008"> <META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"> <LINK REL="STYLESHEET" HREF="userhtml.css"> <LINK REL="next" HREF="node70.html"> <LINK REL="previous" HREF="node68.html"> <LINK REL="up" HREF="node67.html"> <LINK REL="next" HREF="node70.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html1114" HREF="node70.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> <A NAME="tex2html1110" HREF="node67.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> <A NAME="tex2html1104" HREF="node68.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> <A NAME="tex2html1112" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A> <BR> <B> Next:</B> <A NAME="tex2html1115" HREF="node70.html">psb_cdasb Communication</A> <B> Up:</B> <A NAME="tex2html1111" HREF="node67.html">Data management routines</A> <B> Previous:</B> <A NAME="tex2html1105" HREF="node68.html">psb_cdall Allocates</A> <B> <A NAME="tex2html1113" HREF="node1.html">Contents</A></B> <BR> <BR> <!--End of Navigation Panel--> <H2><A NAME="SECTION00072000000000000000"> psb_cdins -- Communication descriptor insert routine</A> </H2> <P> <PRE> call psb_cdins(nz, ia, ja, desc_a, info [,ila,jla]) call psb_cdins(nz,ja,desc,info[,jla,mask,lidx]) </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. In the first form the edges are specified as pairs of indices <IMG WIDTH="76" HEIGHT="32" ALIGN="MIDDLE" BORDER="0" SRC="img98.png" ALT="$ia(i),ja(i)$">; the starting index <IMG WIDTH="36" HEIGHT="32" ALIGN="MIDDLE" BORDER="0" SRC="img99.png" ALT="$ia(i)$"> should belong to the current process. In the second form only the remote indices <IMG WIDTH="37" HEIGHT="32" ALIGN="MIDDLE" BORDER="0" SRC="img100.png" ALT="$ja(i)$"> are specified. <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="img101.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="img101.png" ALT="$nz$">. </DD> <DT><STRONG>mask</STRONG></DT> <DD>Mask entries in <code>ja</code>, they are inserted only when the corresponding <code>mask</code> entries are <code>.true.</code> <BR> Scope: <B>local</B>. <BR> Type: <B>optional</B>. <BR> Intent: <B>in</B>. <BR> Specified as: a logical array of length <IMG WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" BORDER="0" SRC="img101.png" ALT="$nz$">, default <code>.true.</code>. </DD> <DT><STRONG>lidx</STRONG></DT> <DD>User defined local indices for <code>ja</code>. <BR> Scope: <B>local</B>. <BR> Type: <B>optional</B>. <BR> Intent: <B>in</B>. <BR> Specified as: an integer array of length <IMG WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" BORDER="0" SRC="img101.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> <DT><STRONG>ila</STRONG></DT> <DD>the local indices of the starting vertex of the edges being inserted. <BR> Scope: <B>local</B>. <BR> Type: <B>optional</B>. <BR> Intent: <B>out</B>. <BR> Specified as: an integer array of length <IMG WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" BORDER="0" SRC="img101.png" ALT="$nz$">. </DD> <DT><STRONG>jla</STRONG></DT> <DD>the local indices of the end vertex of the edges being inserted. <BR> Scope: <B>local</B>. <BR> Type: <B>optional</B>. <BR> Intent: <B>out</B>. <BR> Specified as: an integer array of length <IMG WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" BORDER="0" SRC="img101.png" ALT="$nz$">. <P> </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> <LI>The second form of this routine will be useful when dealing with user-specified index mappings; see also <A HREF="node7.html#sec:usermaps">2.3.1</A>. </LI> </OL> <P> <HR> <!--Navigation Panel--> <A NAME="tex2html1114" HREF="node70.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> <A NAME="tex2html1110" HREF="node67.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> <A NAME="tex2html1104" HREF="node68.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> <A NAME="tex2html1112" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A> <BR> <B> Next:</B> <A NAME="tex2html1115" HREF="node70.html">psb_cdasb Communication</A> <B> Up:</B> <A NAME="tex2html1111" HREF="node67.html">Data management routines</A> <B> Previous:</B> <A NAME="tex2html1105" HREF="node68.html">psb_cdall Allocates</A> <B> <A NAME="tex2html1113" HREF="node1.html">Contents</A></B> <!--End of Navigation Panel--> </BODY> </HTML>