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Documentation changes. We have barely begun.....
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Salvatore Filippone
2011-12-16 16:45:25 +00:00
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@@ -7,8 +7,8 @@ original version by: Nikos Drakos, CBLU, University of Leeds
Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
<HTML>
<HEAD>
<TITLE>psb_sum -- Global sum</TITLE>
<META NAME="description" CONTENT="psb_sum -- Global sum">
<TITLE>psb_max -- Global maximum</TITLE>
<META NAME="description" CONTENT="psb_max -- Global maximum">
<META NAME="keywords" CONTENT="userhtml">
<META NAME="resource-type" CONTENT="document">
<META NAME="distribution" CONTENT="global">
@@ -20,49 +20,49 @@ original version by: Nikos Drakos, CBLU, University of Leeds
<LINK REL="next" HREF="node84.html">
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<H2><A NAME="SECTION000810000000000000000">
psb_sum -- Global sum</A>
<H2><A NAME="SECTION000811000000000000000">
psb_max -- Global maximum</A>
</H2>
<P>
<PRE>
call psb_sum(icontxt, dat, root)
call psb_max(icontxt, dat, root)
</PRE>
<P>
This subroutine implements a sum reduction operation based on the
underlying communication library.
This subroutine implements a maximum valuereduction
operation based on the underlying communication library.
<DL>
<DT><STRONG>Type:</STRONG></DT>
<DD>Synchronous.
@@ -83,21 +83,21 @@ Intent: <B>in</B>.
Specified as: an integer variable.
</DD>
<DT><STRONG>dat</STRONG></DT>
<DD>The local contribution to the global sum.
<DD>The local contribution to the global maximum.
<BR>
Scope: <B>global</B>.
Scope: <B>local</B>.
<BR>
Type: <B>required</B>.
<BR>
Intent: <B>inout</B>.
<BR>
Specified as: an integer, real or complex variable, which may be a
Specified as: an integer or real variable, which may be a
scalar, or a rank 1 or 2 array. Type, kind, rank and size must agree on all processes.
</DD>
<DT><STRONG>root</STRONG></DT>
<DD>Process to hold the final sum, or <IMG
<DD>Process to hold the final maximum, or <IMG
WIDTH="24" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img84.png"
SRC="img83.png"
ALT="$-1$"> to make it available
on all processes.
<BR>
@@ -112,8 +112,9 @@ Specified as: an integer value <!-- MATH
-->
<IMG
WIDTH="165" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img130.png"
ALT="$-1&lt;= root &lt;= np-1$">, default -1. </DD>
SRC="img129.png"
ALT="$-1&lt;= root &lt;= np-1$">, default -1.
<BR></DD>
</DL>
<P>
@@ -122,18 +123,16 @@ Specified as: an integer value <!-- MATH
<DD>
</DD>
<DT><STRONG>dat</STRONG></DT>
<DD>On destination process(es), the result of the sum operation.
<DD>On destination process(es), the result of the maximum operation.
<BR>
Scope: <B>global</B>.
<BR>
Type: <B>required</B>.
<BR>
Intent: <B>inout</B>.
Intent: <B>in</B>.
<BR>
Specified as: an integer, real or complex variable, which may be a
scalar, or a rank 1 or 2 array.
<BR>
Type, kind, rank and size must agree on all processes.
Specified as: an integer or real variable, which may be a
scalar, or a rank 1 or 2 array. Type, kind, rank and size must agree on all processes.
</DD>
</DL>
@@ -152,26 +151,26 @@ Type, kind, rank and size must agree on all processes.
<P>
<HR>
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