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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 -->
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<TITLE>psb_exit -- Exit from PSBLAS parallel environment</TITLE>
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<TITLE>psb_get_mpicomm -- Get the MPI communicator</TITLE>
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<H2><A NAME="SECTION00083000000000000000">
psb_exit -- Exit from PSBLAS parallel environment</A>
<H2><A NAME="SECTION00084000000000000000">
psb_get_mpicomm -- Get the MPI communicator</A>
</H2>
<P>
<PRE>
call psb_exit(icontxt)
call psb_exit(icontxt,close)
call psb_get_mpicomm(icontxt, icomm)
</PRE>
<P>
This subroutine exits from the PSBLAS parallel virtual machine.
This subroutine returns the MPI communicator associated with a PSBLAS context
<DL>
<DT><STRONG>Type:</STRONG></DT>
<DD>Synchronous.
<DD>Asynchronous.
</DD>
<DT><STRONG><B>On Entry </B></STRONG></DT>
<DD>
@@ -82,69 +81,26 @@ Intent: <B>in</B>.
<BR>
Specified as: an integer variable.
</DD>
<DT><STRONG>close</STRONG></DT>
<DD>Whether to close all data structures related to the
virtual parallel machine, besides those associated with icontxt.
<BR>
Scope: <B>global</B>.
<BR>
Type: <B>optional</B>.
<BR>
Intent: <B>in</B>.
<BR>
Specified as: a logical variable, default value: true.
</DD>
</DL>
<P>
<FONT SIZE="+1"><B>Notes</B></FONT>
<OL>
<LI>This routine may be called even if a previous call to
<code>psb_info</code> has returned with <IMG
WIDTH="73" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
SRC="img126.png"
ALT="$iam=-1$">; indeed, it it is the only
routine that may be called with argument <code>icontxt</code> in this
situation.
</LI>
<LI>A call to this routine with <code>close=.true.</code> implies a call
to <code>MPI_Finalize</code>, after which no parallel routine may be called.
</LI>
<LI>If the user whishes to use multiple communication contexts in the
same program, or to enter and exit multiple times into the parallel
environment, this routine may be called to
selectively close the contexts with <code>close=.false.</code>, while on
the last call it should be called with <code>close=.true.</code> to
shutdown in a clean way the entire parallel environment.
</LI>
</OL>
<DL>
<DT><STRONG><B>On Return</B></STRONG></DT>
<DD>
</DD>
<DT><STRONG>icomm</STRONG></DT>
<DD>The MPI communicator associated with the PSBLAS virtual parallel machine.
<BR>
Scope: <B>global</B>.
<BR>
Type: <B>required</B>.
<BR>
Intent: <B>out</B>.
<BR></DD>
</DL>
<P>
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