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This commit is contained in:
Salvatore Filippone
+57
-76
@@ -7,8 +7,8 @@ original version by: Nikos Drakos, CBLU, University of Leeds
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Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
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<HTML>
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<HEAD>
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<TITLE>psb_exit -- Exit from PSBLAS parallel environment</TITLE>
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<META NAME="description" CONTENT="psb_exit -- Exit from PSBLAS parallel environment">
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<TITLE>psb_get_overlap -- Extract list of overlap elements</TITLE>
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<META NAME="description" CONTENT="psb_get_overlap -- Extract list of overlap elements">
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<META NAME="keywords" CONTENT="userhtml">
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<META NAME="resource-type" CONTENT="document">
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<META NAME="distribution" CONTENT="global">
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@@ -20,80 +20,96 @@ original version by: Nikos Drakos, CBLU, University of Leeds
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<LINK REL="next" HREF="node90.html">
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<LINK REL="previous" HREF="node88.html">
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</HEAD>
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<BODY >
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<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A>
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<BR>
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<B> Next:</B> <A NAME="tex2html1336"
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HREF="node90.html">psb_get_mpicomm Get</A>
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<B> Up:</B> <A NAME="tex2html1332"
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HREF="node86.html">Parallel environment routines</A>
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<B> Previous:</B> <A NAME="tex2html1326"
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HREF="node88.html">psb_info Return</A>
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<B> <A NAME="tex2html1334"
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<B> Next:</B> <A NAME="tex2html1343"
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HREF="node90.html">psb_sp_getrow Extract</A>
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<B> Up:</B> <A NAME="tex2html1339"
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HREF="node65.html">Data management routines</A>
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<B> Previous:</B> <A NAME="tex2html1333"
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HREF="node88.html">psb_get_boundary Extract</A>
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<B> <A NAME="tex2html1341"
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HREF="node1.html">Contents</A></B>
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<BR>
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<BR>
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<!--End of Navigation Panel-->
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<H2><A NAME="SECTION00083000000000000000">
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psb_exit -- Exit from PSBLAS parallel
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environment</A>
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<H2><A NAME="SECTION000724000000000000000">
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psb_get_overlap -- Extract list of overlap
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elements</A>
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</H2>
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<P>
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<PRE>
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call psb_exit(icontxt)
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call psb_exit(icontxt,close)
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call psb_get_overlap(ovrel, desc, info)
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</PRE>
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<P>
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This subroutine exits from the PSBLAS parallel virtual machine.
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<DL>
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<DT><STRONG>Type:</STRONG></DT>
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<DD>Synchronous.
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<DD>Asynchronous.
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</DD>
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<DT><STRONG><B>On Entry </B></STRONG></DT>
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<DT><STRONG><B>On Entry</B></STRONG></DT>
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<DD>
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</DD>
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<DT><STRONG>icontxt</STRONG></DT>
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<DD>the communication context identifying the virtual
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parallel machine.
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<DT><STRONG>desc</STRONG></DT>
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<DD>the communication descriptor.
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<BR>
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Scope: <B>global</B>.
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Scope:<B>local</B>.
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<BR>
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Type: <B>required</B>.
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Type:<B>required</B>.
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<BR>
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Intent: <B>in</B>.
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<BR>
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Specified as: an integer variable.
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Specified as: a structured data of type descdata<TT>psb_desc_type</TT>.
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</DD>
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<DT><STRONG>close</STRONG></DT>
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<DD>Whether to close all data structures related to the
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virtual parallel machine, besides those associated with icontxt.
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</DL>
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<P>
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<DL>
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<DT><STRONG><B>On Return</B></STRONG></DT>
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<DD>
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</DD>
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<DT><STRONG>ovrel</STRONG></DT>
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<DD>The list of overlap elements on the calling process, in
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local numbering.
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<BR>
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Scope: <B>global</B>.
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Scope: <B>local</B>
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<BR>
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Type: <B>optional</B>.
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Type: <B>required</B>
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<BR>
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Intent: <B>in</B>.
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Intent: <B>out</B>.
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<BR>
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Specified as: a logical variable, default value: true.
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Specified as: a rank one array with the ALLOCATABLE
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attribute, of type integer.
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<BR></DD>
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<DT><STRONG>info</STRONG></DT>
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<DD>Error code.
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<BR>
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Scope: <B>local</B>
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<BR>
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Type: <B>required</B>
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<BR>
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Intent: <B>out</B>.
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<BR>
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An integer value; 0 means no error has been detected.
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</DD>
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</DL>
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@@ -101,51 +117,16 @@ Specified as: a logical variable, default value: true.
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<FONT SIZE="+1"><B>Notes</B></FONT>
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<OL>
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<LI>This routine may be called even if a previous call to
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<code>psb_info</code> has returned with <IMG
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WIDTH="73" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
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SRC="img129.png"
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ALT="$iam=-1$">; indeed, it it is the only
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routine that may be called with argument <code>icontxt</code> in this
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situation.
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<LI>If there are no overlap elements the output vector is set
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to the ``not allocated'' state.
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</LI>
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<LI>A call to this routine with <code>close=.true.</code> implies a call
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to <code>MPI_Finalize</code>, after which no parallel routine may be called.
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</LI>
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<LI>If the user whishes to use multiple communication contexts in the
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same program, or to enter and exit multiple times into the parallel
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environment, this routine may be called to
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selectively close the contexts with <code>close=.false.</code>, while on
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the last call it should be called with <code>close=.true.</code> to
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shutdown in a clean way the entire parallel environment.
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<LI>Otherwise the size of <code>ovrel</code> will be exactly equal to the
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number of overlap elements.
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</LI>
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</OL>
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<P>
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<HR>
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HREF="node90.html">
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HREF="node88.html">
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<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A>
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<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A>
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<BR>
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<B> Next:</B> <A NAME="tex2html1336"
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HREF="node90.html">psb_get_mpicomm Get</A>
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<B> Up:</B> <A NAME="tex2html1332"
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HREF="node86.html">Parallel environment routines</A>
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<B> Previous:</B> <A NAME="tex2html1326"
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HREF="node88.html">psb_info Return</A>
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<B> <A NAME="tex2html1334"
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HREF="node1.html">Contents</A></B>
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