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Default: use all available processes. </DD> <DT><STRONG>basectxt</STRONG></DT> <DD>the initial communication context. The new context will be defined from the processes participating in the initial one. <BR> Scope: <B>global</B>. <BR> Type: <B>optional</B>. <BR> Intent: <B>in</B>. <BR> Specified as: an integer value. Default: use MPI_COMM_WORLD. </DD> <DT><STRONG>ids</STRONG></DT> <DD>Identities of the processes to use for the new context; the argument is ignored when <code>np</code> is not specified. This allows the processes in the new environment to be in an order different from the original one. <BR> Scope: <B>global</B>. <BR> Type: <B>optional</B>. <BR> Intent: <B>in</B>. <BR> Specified as: an integer array. Default: use the indices <IMG WIDTH="94" HEIGHT="32" ALIGN="MIDDLE" BORDER="0" SRC="img93.png" ALT="$(0\dots np-1)$">. </DD> </DL> <P> <DL> <DT><STRONG><B>On Return</B></STRONG></DT> <DD> </DD> <DT><STRONG>icontxt</STRONG></DT> <DD>the communication context identifying the virtual parallel machine. Note that this is always a duplicate of <code>basectxt</code>, so that library communications are completely separated from other communication operations. <BR> Scope: <B>global</B>. <BR> Type: <B>required</B>. <BR> Intent: <B>out</B>. <BR> Specified as: an integer variable. </DD> </DL> <P> <FONT SIZE="+1"><B>Notes</B></FONT> <OL> <LI>A call to this routine must precede any other PSBLAS call. </LI> <LI>It is an error to specify a value for <IMG WIDTH="22" HEIGHT="30" ALIGN="MIDDLE" BORDER="0" SRC="img121.png" ALT="$np$"> greater than the number of processes available in the underlying base parallel environment. </LI> </OL> <P> <HR> <!--Navigation Panel--> <A NAME="tex2html1092" HREF="node73.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> <A NAME="tex2html1088" HREF="node71.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> <A NAME="tex2html1082" HREF="node71.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> <A NAME="tex2html1090" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A> <BR> <B> Next:</B> <A NAME="tex2html1093" HREF="node73.html">psb_info Return</A> <B> Up:</B> <A NAME="tex2html1089" HREF="node71.html">Parallel environment routines</A> <B> Previous:</B> <A NAME="tex2html1083" HREF="node71.html">Parallel environment routines</A> <B> <A NAME="tex2html1091" HREF="node1.html">Contents</A></B> <!--End of Navigation Panel--> </BODY> </HTML>