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<!--l. 1--><div class="crosslinks"><p class="noindent">[<a
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<h3 class="sectionHead"><span class="titlemark">5 </span> <a
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id="x35-720005"></a>Communication routines</h3>
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<!--l. 7--><p class="noindent" >The routines in this chapter implement various global communication operators on
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vectors associated with a discretization mesh. For auxiliary communication routines
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not tied to a discretization space see <a
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href="userhtmlse6.html#x40-770006">6<!--tex4ht:ref: sec:toolsrout --></a>.
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 <span class="subsectionToc" >5.1 <a
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href="userhtmlsu26.html#x36-730005.1">psb_halo — Halo Data Communication</a></span>
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<br />  <span class="subsectionToc" >5.2 <a
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href="userhtmlsu27.html#x37-740005.2">psb_ovrl — Overlap Update</a></span>
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<br />  <span class="subsectionToc" >5.3 <a
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href="userhtmlsu28.html#x38-750005.3">psb_gather — Gather Global Dense Matrix</a></span>
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<br />  <span class="subsectionToc" >5.4 <a
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href="userhtmlsu29.html#x39-760005.4">psb_scatter — Scatter Global Dense Matrix</a></span>
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