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<H1><A NAME="SECTION00060000000000000000">
Communication routines</A>
</H1>
The routines in this chapter implement various global communication operators
on vectors associated with a discretization mesh. For auxiliary communication
routines not tied to a discretization space see&nbsp;<A HREF="node74.html#sec:toolsrout">6</A>.

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<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>

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<LI><A NAME="tex2html1112"
  HREF="node70.html">psb_halo -- Halo Data Communication</A>
<LI><A NAME="tex2html1113"
  HREF="node71.html">psb_ovrl -- Overlap Update</A>
<LI><A NAME="tex2html1114"
  HREF="node72.html">psb_gather -- Gather Global Dense Matrix</A>
<LI><A NAME="tex2html1115"
  HREF="node73.html">psb_scatter -- Scatter Global Dense Matrix</A>
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