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Updated description of DOT and friends to account for optional GLOBAL

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Salvatore Filippone
2018-04-20 15:57:26 +01:00
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<!--Converted with LaTeX2HTML 2017.2 (Released Jan 23, 2017) -->
<HTML>
<HEAD>
<TITLE>psb_rcv -- Receive data</TITLE>
<META NAME="description" CONTENT="psb_rcv -- Receive data">
<TITLE>psb_snd -- Send data</TITLE>
<META NAME="description" CONTENT="psb_snd -- Send data">
<META NAME="keywords" CONTENT="userhtml">
<META NAME="resource-type" CONTENT="document">
<META NAME="distribution" CONTENT="global">
@@ -14,6 +14,7 @@
<LINK REL="STYLESHEET" HREF="userhtml.css">
<LINK REL="next" HREF="node116.html">
<LINK REL="previous" HREF="node114.html">
<LINK REL="up" HREF="node99.html">
<LINK REL="next" HREF="node116.html">
@@ -22,45 +23,45 @@
<BODY >
<DIV CLASS="navigation"><!--Navigation Panel-->
<A NAME="tex2html1693"
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<H2><A NAME="SECTION000816000000000000000">
psb_rcv -- Receive data</A>
psb_snd -- Send data</A>
</H2>
<P>
<PRE>
call psb_rcv(icontxt, dat, src, m)
call psb_snd(icontxt, dat, dst, m)
</PRE>
<P>
This subroutine receives a packet of data to a destination.
This subroutine sends a packet of data to a destination.
<DL>
<DT><STRONG>Type:</STRONG></DT>
<DD>Synchronous: see usage notes.
<DD>Synchronous: see usage notes.
</DD>
<DT><STRONG><B>On Entry </B></STRONG></DT>
<DD>
@@ -77,8 +78,24 @@ Intent: <B>in</B>.
<BR>
Specified as: an integer variable.
</DD>
<DT><STRONG>src</STRONG></DT>
<DD>Source process.
<DT><STRONG>dat</STRONG></DT>
<DD>The data to be sent.
<BR>
Scope: <B>local</B>.
<BR>
Type: <B>required</B>.
<BR>
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, or a character or logical scalar. Type, kind and rank must agree on sender and receiver process; if <SPAN CLASS="MATH"><IMG
WIDTH="18" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img140.png"
ALT="$m$"></SPAN> is
not specified, size must agree as well.
</DD>
<DT><STRONG>dst</STRONG></DT>
<DD>Destination process.
<BR>
Scope: <B>global</B>.
<BR>
@@ -87,12 +104,12 @@ Type: <B>required</B>.
Intent: <B>in</B>.
<BR>
Specified as: an integer value <!-- MATH
$0<= src <= np-1$
$0<= dst <= np-1$
-->
<SPAN CLASS="MATH"><IMG
WIDTH="147" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img139.png"
ALT="$0&lt;= src &lt;= np-1$"></SPAN>.
WIDTH="145" HEIGHT="30" ALIGN="MIDDLE" BORDER="0"
SRC="img141.png"
ALT="$0&lt;= dst &lt;= np-1$"></SPAN>.
<BR></DD>
<DT><STRONG>m</STRONG></DT>
<DD>Number of rows.
@@ -108,16 +125,16 @@ Specified as: an integer value <!-- MATH
-->
<SPAN CLASS="MATH"><IMG
WIDTH="172" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
SRC="img135.png"
SRC="img142.png"
ALT="$0&lt;= m &lt;= size(dat,1)$"></SPAN>.
<BR>
When <SPAN CLASS="MATH"><IMG
WIDTH="26" HEIGHT="15" ALIGN="BOTTOM" BORDER="0"
SRC="img136.png"
SRC="img138.png"
ALT="$dat$"></SPAN> is a rank 2 array, specifies the number of rows to be sent
independently of the leading dimension <SPAN CLASS="MATH"><IMG
WIDTH="83" HEIGHT="32" ALIGN="MIDDLE" BORDER="0"
SRC="img137.png"
SRC="img143.png"
ALT="$size(dat,1)$"></SPAN>; must have the
same value on sending and receiving processes.
</DD>
@@ -128,22 +145,6 @@ same value on sending and receiving processes.
<DT><STRONG><B>On Return</B></STRONG></DT>
<DD>
</DD>
<DT><STRONG>dat</STRONG></DT>
<DD>The data to be received.
<BR>
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
scalar, or a rank 1 or 2 array, or a character or logical scalar. Type, kind and rank must agree on sender and receiver process; if <SPAN CLASS="MATH"><IMG
WIDTH="18" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img133.png"
ALT="$m$"></SPAN> is
not specified, size must agree as well.
</DD>
</DL>
<P>
@@ -151,10 +152,10 @@ not specified, size must agree as well.
<OL>
<LI>This subroutine implies a synchronization, but only between the
calling process and the source process <SPAN CLASS="MATH"><IMG
WIDTH="26" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
SRC="img140.png"
ALT="$src$"></SPAN>.
calling process and the destination process <SPAN CLASS="MATH"><IMG
WIDTH="25" HEIGHT="15" ALIGN="BOTTOM" BORDER="0"
SRC="img144.png"
ALT="$dst$"></SPAN>.
</LI>
</OL>
@@ -162,26 +163,26 @@ not specified, size must agree as well.
<DIV CLASS="navigation"><HR>
<!--Navigation Panel-->
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<BR>
<B> Next:</B> <A NAME="tex2html1694"
HREF="node116.html">Error handling</A>
<B> Up:</B> <A NAME="tex2html1690"
<B> Next:</B> <A NAME="tex2html1698"
HREF="node116.html">psb_rcv Receive</A>
<B> Up:</B> <A NAME="tex2html1694"
HREF="node99.html">Parallel environment routines</A>
<B> Previous:</B> <A NAME="tex2html1686"
HREF="node114.html">psb_snd Send</A>
&nbsp; <B> <A NAME="tex2html1692"
<B> Previous:</B> <A NAME="tex2html1688"
HREF="node114.html">psb_nrm2 Global</A>
&nbsp; <B> <A NAME="tex2html1696"
HREF="node1.html">Contents</A></B> </DIV>
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