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.
276 lines
6.9 KiB
HTML
276 lines
6.9 KiB
HTML
17 years ago
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
|
||
|
|
|
||
|
|
<!--Converted with LaTeX2HTML 2002-2-1 (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_gather -- Gather Global Dense Matrix</TITLE>
|
||
|
|
<META NAME="description" CONTENT="psb_gather -- Gather Global Dense Matrix">
|
||
|
|
<META NAME="keywords" CONTENT="userhtml">
|
||
|
|
<META NAME="resource-type" CONTENT="document">
|
||
|
|
<META NAME="distribution" CONTENT="global">
|
||
|
|
|
||
|
|
<META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1">
|
||
|
|
<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
|
||
|
|
|
||
|
|
<LINK REL="STYLESHEET" HREF="userhtml.css">
|
||
|
|
|
||
|
|
<LINK REL="next" HREF="node41.html">
|
||
|
|
<LINK REL="previous" HREF="node39.html">
|
||
|
|
<LINK REL="up" HREF="node37.html">
|
||
|
|
<LINK REL="next" HREF="node41.html">
|
||
|
|
</HEAD>
|
||
|
|
|
||
|
|
<BODY >
|
||
|
|
<!--Navigation Panel-->
|
||
|
|
<A NAME="tex2html667"
|
||
|
|
HREF="node41.html">
|
||
|
|
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
|
||
|
|
SRC="file:/usr/share/latex2html/icons/next.png"></A>
|
||
|
|
<A NAME="tex2html663"
|
||
|
|
HREF="node37.html">
|
||
|
|
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up"
|
||
|
|
SRC="file:/usr/share/latex2html/icons/up.png"></A>
|
||
|
|
<A NAME="tex2html657"
|
||
|
|
HREF="node39.html">
|
||
|
|
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous"
|
||
|
|
SRC="file:/usr/share/latex2html/icons/prev.png"></A>
|
||
|
|
<A NAME="tex2html665"
|
||
|
|
HREF="node1.html">
|
||
|
|
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents"
|
||
|
|
SRC="file:/usr/share/latex2html/icons/contents.png"></A>
|
||
|
|
<BR>
|
||
|
|
<B> Next:</B> <A NAME="tex2html668"
|
||
|
|
HREF="node41.html">psb_scatter Scatter</A>
|
||
|
|
<B> Up:</B> <A NAME="tex2html664"
|
||
|
|
HREF="node37.html">Communication routines</A>
|
||
|
|
<B> Previous:</B> <A NAME="tex2html658"
|
||
|
|
HREF="node39.html">psb_ovrl Overlap</A>
|
||
|
|
<B> <A NAME="tex2html666"
|
||
|
|
HREF="node1.html">Contents</A></B>
|
||
|
|
<BR>
|
||
|
|
<BR>
|
||
|
|
<!--End of Navigation Panel-->
|
||
|
|
|
||
|
|
<H2><A NAME="SECTION00063000000000000000">
|
||
|
|
psb_gather -- Gather Global Dense Matrix</A>
|
||
|
|
</H2>
|
||
|
|
|
||
|
|
<P>
|
||
|
|
These subroutines collect the portions of global dense matrix
|
||
|
|
distributed over all process into one single array stored on one
|
||
|
|
process.
|
||
|
|
|
||
|
|
<P>
|
||
|
|
<BR><P></P>
|
||
|
|
<DIV ALIGN="CENTER">
|
||
|
|
<!-- MATH
|
||
|
|
\begin{displaymath}
|
||
|
|
glob\_x \leftarrow collect(loc\_x_i)
|
||
|
|
\end{displaymath}
|
||
|
|
-->
|
||
|
|
|
||
|
|
<IMG
|
||
|
|
WIDTH="163" HEIGHT="28" BORDER="0"
|
||
|
|
SRC="img71.png"
|
||
|
|
ALT="\begin{displaymath}glob\_x \leftarrow collect(loc\_x_i) \end{displaymath}">
|
||
|
|
</DIV>
|
||
|
|
<BR CLEAR="ALL">
|
||
|
|
<P></P>
|
||
|
|
where:
|
||
|
|
<DL>
|
||
|
|
<DT><STRONG><IMG
|
||
|
|
WIDTH="46" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
|
||
|
|
SRC="img72.png"
|
||
|
|
ALT="$glob\_x$"></STRONG></DT>
|
||
|
|
<DD>is the global submatrix <!-- MATH
|
||
|
|
$glob\_x_{1:m,1:n}$
|
||
|
|
-->
|
||
|
|
<IMG
|
||
|
|
WIDTH="91" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
|
||
|
|
SRC="img73.png"
|
||
|
|
ALT="$glob\_x_{1:m,1:n}$">
|
||
|
|
</DD>
|
||
|
|
<DT><STRONG><IMG
|
||
|
|
WIDTH="43" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
|
||
|
|
SRC="img74.png"
|
||
|
|
ALT="$loc\_x_i$"></STRONG></DT>
|
||
|
|
<DD>is the local portion of global dense matrix on
|
||
|
|
process <IMG
|
||
|
|
WIDTH="10" HEIGHT="17" ALIGN="BOTTOM" BORDER="0"
|
||
|
|
SRC="img3.png"
|
||
|
|
ALT="$i$">.
|
||
|
|
</DD>
|
||
|
|
<DT><STRONG><IMG
|
||
|
|
WIDTH="49" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
|
||
|
|
SRC="img75.png"
|
||
|
|
ALT="$collect$"></STRONG></DT>
|
||
|
|
<DD>is the collect function.
|
||
|
|
</DD>
|
||
|
|
</DL>
|
||
|
|
|
||
|
|
<P>
|
||
|
|
<BR><P></P>
|
||
|
|
<DIV ALIGN="CENTER"><A NAME="2677"></A>
|
||
|
|
<TABLE>
|
||
|
|
<CAPTION><STRONG>Table 15:</STRONG>
|
||
|
|
Data types</CAPTION>
|
||
|
|
<TR><TD>
|
||
|
|
<DIV ALIGN="CENTER">
|
||
|
|
<TABLE CELLPADDING=3 BORDER="1" ALIGN="CENTER">
|
||
|
|
<TR><TD ALIGN="LEFT"><IMG
|
||
|
|
WIDTH="33" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
|
||
|
|
SRC="img76.png"
|
||
|
|
ALT="$x_i, y$"></TD>
|
||
|
|
<TD ALIGN="LEFT"><B>Subroutine</B></TD>
|
||
|
|
</TR>
|
||
|
|
<TR><TD ALIGN="LEFT">Integer</TD>
|
||
|
|
<TD ALIGN="LEFT">psb_gather</TD>
|
||
|
|
</TR>
|
||
|
|
<TR><TD ALIGN="LEFT">Short Precision Real</TD>
|
||
|
|
<TD ALIGN="LEFT">psb_gather</TD>
|
||
|
|
</TR>
|
||
|
|
<TR><TD ALIGN="LEFT">Long Precision Real</TD>
|
||
|
|
<TD ALIGN="LEFT">psb_gather</TD>
|
||
|
|
</TR>
|
||
|
|
<TR><TD ALIGN="LEFT">Short Precision Complex</TD>
|
||
|
|
<TD ALIGN="LEFT">psb_gather</TD>
|
||
|
|
</TR>
|
||
|
|
<TR><TD ALIGN="LEFT">Long Precision Complex</TD>
|
||
|
|
<TD ALIGN="LEFT">psb_gather</TD>
|
||
|
|
</TR>
|
||
|
|
</TABLE>
|
||
|
|
</DIV>
|
||
|
|
</TD></TR>
|
||
|
|
</TABLE>
|
||
|
|
</DIV><P></P>
|
||
|
|
<BR>
|
||
|
|
|
||
|
|
<P>
|
||
|
|
<PRE>
|
||
|
|
call psb_gather(glob_x, loc_x, desc_a, info, root)
|
||
|
|
call psb_gather(glob_x, loc_x, desc_a, info, root)
|
||
|
|
</PRE>
|
||
|
|
|
||
|
|
<P>
|
||
|
|
<DL>
|
||
|
|
<DT><STRONG>Type:</STRONG></DT>
|
||
|
|
<DD>Synchronous.
|
||
|
|
</DD>
|
||
|
|
<DT><STRONG><B>On Entry</B></STRONG></DT>
|
||
|
|
<DD>
|
||
|
|
</DD>
|
||
|
|
<DT><STRONG>loc_x</STRONG></DT>
|
||
|
|
<DD>the local portion of global dense matrix
|
||
|
|
<IMG
|
||
|
|
WIDTH="46" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
|
||
|
|
SRC="img72.png"
|
||
|
|
ALT="$glob\_x$">.
|
||
|
|
<BR>
|
||
|
|
Scope: <B>local</B>
|
||
|
|
<BR>
|
||
|
|
Type: <B>required</B>
|
||
|
|
<BR>
|
||
|
|
Intent: <B>in</B>.
|
||
|
|
<BR>
|
||
|
|
Specified as: a rank one or two array containing numbers of the type
|
||
|
|
indicated in Table <A HREF="#tab:gather">15</A>.
|
||
|
|
</DD>
|
||
|
|
<DT><STRONG>desc_a</STRONG></DT>
|
||
|
|
<DD>contains data structures for communications.
|
||
|
|
<BR>
|
||
|
|
Scope: <B>local</B>
|
||
|
|
<BR>
|
||
|
|
Type: <B>required</B>
|
||
|
|
<BR>
|
||
|
|
Intent: <B>in</B>.
|
||
|
|
<BR>
|
||
|
|
Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
|
||
|
|
</DD>
|
||
|
|
<DT><STRONG>root</STRONG></DT>
|
||
|
|
<DD>The process that holds the global copy. If <IMG
|
||
|
|
WIDTH="75" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
|
||
|
|
SRC="img77.png"
|
||
|
|
ALT="$root=-1$"> all
|
||
|
|
the processes will have a copy of the global vector.
|
||
|
|
<BR>
|
||
|
|
Scope: <B>global</B>
|
||
|
|
<BR>
|
||
|
|
Type: <B>optional</B>
|
||
|
|
<BR>
|
||
|
|
Intent: <B>in</B>.
|
||
|
|
<BR>
|
||
|
|
Specified as: an integer variable <!-- MATH
|
||
|
|
$-1\le root\le np-1$
|
||
|
|
-->
|
||
|
|
<IMG
|
||
|
|
WIDTH="140" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
|
||
|
|
SRC="img78.png"
|
||
|
|
ALT="$-1\le root\le np-1$">, default <IMG
|
||
|
|
WIDTH="25" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
|
||
|
|
SRC="img79.png"
|
||
|
|
ALT="$-1$">.
|
||
|
|
</DD>
|
||
|
|
<DT><STRONG><B>On Return</B></STRONG></DT>
|
||
|
|
<DD>
|
||
|
|
</DD>
|
||
|
|
<DT><STRONG>glob_x</STRONG></DT>
|
||
|
|
<DD>The array where the local parts must be gathered.
|
||
|
|
<BR>
|
||
|
|
Scope: <B>global</B>
|
||
|
|
<BR>
|
||
|
|
Type: <B>required</B>
|
||
|
|
<BR>
|
||
|
|
Intent: <B>out</B>.
|
||
|
|
<BR>
|
||
|
|
Specified as: a rank one or two array.
|
||
|
|
</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>
|
||
|
|
</DL>
|
||
|
|
|
||
|
|
<P>
|
||
|
|
<HR>
|
||
|
|
<!--Navigation Panel-->
|
||
|
|
<A NAME="tex2html667"
|
||
|
|
HREF="node41.html">
|
||
|
|
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
|
||
|
|
SRC="file:/usr/share/latex2html/icons/next.png"></A>
|
||
|
|
<A NAME="tex2html663"
|
||
|
|
HREF="node37.html">
|
||
|
|
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up"
|
||
|
|
SRC="file:/usr/share/latex2html/icons/up.png"></A>
|
||
|
|
<A NAME="tex2html657"
|
||
|
|
HREF="node39.html">
|
||
|
|
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous"
|
||
|
|
SRC="file:/usr/share/latex2html/icons/prev.png"></A>
|
||
|
|
<A NAME="tex2html665"
|
||
|
|
HREF="node1.html">
|
||
|
|
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents"
|
||
|
|
SRC="file:/usr/share/latex2html/icons/contents.png"></A>
|
||
|
|
<BR>
|
||
|
|
<B> Next:</B> <A NAME="tex2html668"
|
||
|
|
HREF="node41.html">psb_scatter Scatter</A>
|
||
|
|
<B> Up:</B> <A NAME="tex2html664"
|
||
|
|
HREF="node37.html">Communication routines</A>
|
||
|
|
<B> Previous:</B> <A NAME="tex2html658"
|
||
|
|
HREF="node39.html">psb_ovrl Overlap</A>
|
||
|
|
<B> <A NAME="tex2html666"
|
||
|
|
HREF="node1.html">Contents</A></B>
|
||
|
|
<!--End of Navigation Panel-->
|
||
|
|
|
||
|
|
</BODY>
|
||
|
|
</HTML>
|