<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!--Converted with LaTeX2HTML 2018 (Released Feb 1, 2018) --> <HTML> <HEAD> <TITLE>psb_exit -- Exit from PSBLAS parallel environment</TITLE> <META NAME="description" CONTENT="psb_exit -- Exit from PSBLAS parallel environment"> <META NAME="keywords" CONTENT="userhtml"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <META NAME="Generator" CONTENT="LaTeX2HTML v2018"> <META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"> <LINK REL="STYLESHEET" HREF="userhtml.css"> <LINK REL="next" HREF="node103.html"> <LINK REL="previous" HREF="node101.html"> <LINK REL="up" HREF="node99.html"> <LINK REL="next" HREF="node103.html"> </HEAD> <BODY > <DIV CLASS="navigation"><!--Navigation Panel--> <A NAME="tex2html1541" HREF="node103.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> <A NAME="tex2html1537" HREF="node99.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> <A NAME="tex2html1531" HREF="node101.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> <A NAME="tex2html1539" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A> <BR> <B> Next:</B> <A NAME="tex2html1542" HREF="node103.html">psb_get_mpicomm Get</A> <B> Up:</B> <A NAME="tex2html1538" HREF="node99.html">Parallel environment routines</A> <B> Previous:</B> <A NAME="tex2html1532" HREF="node101.html">psb_info Return</A> <B> <A NAME="tex2html1540" HREF="node1.html">Contents</A></B> <BR> <BR></DIV> <!--End of Navigation Panel--> <H2><A NAME="SECTION00083000000000000000"> psb_exit -- Exit from PSBLAS parallel environment</A> </H2> <P> <PRE> call psb_exit(icontxt) call psb_exit(icontxt,close) </PRE> <P> This subroutine exits from the PSBLAS parallel virtual machine. <DL> <DT><STRONG>Type:</STRONG></DT> <DD>Synchronous. </DD> <DT><STRONG><B>On Entry </B></STRONG></DT> <DD> </DD> <DT><STRONG>icontxt</STRONG></DT> <DD>the communication context identifying the virtual parallel machine. <BR> Scope: <B>global</B>. <BR> Type: <B>required</B>. <BR> 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> <BIG CLASS="LARGE"><B>Notes</B></BIG> <OL> <LI>This routine may be called even if a previous call to <code>psb_info</code> has returned with <SPAN CLASS="MATH"><IMG WIDTH="73" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" SRC="img132.png" ALT="$iam=-1$"></SPAN>; 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> <P> <DIV CLASS="navigation"><HR> <!--Navigation Panel--> <A NAME="tex2html1541" HREF="node103.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> <A NAME="tex2html1537" HREF="node99.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> <A NAME="tex2html1531" HREF="node101.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> <A NAME="tex2html1539" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A> <BR> <B> Next:</B> <A NAME="tex2html1542" HREF="node103.html">psb_get_mpicomm Get</A> <B> Up:</B> <A NAME="tex2html1538" HREF="node99.html">Parallel environment routines</A> <B> Previous:</B> <A NAME="tex2html1532" HREF="node101.html">psb_info Return</A> <B> <A NAME="tex2html1540" HREF="node1.html">Contents</A></B> </DIV> <!--End of Navigation Panel--> </BODY> </HTML>