<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html > <head><title>Communication routines</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <meta name="generator" content="TeX4ht (http://www.tug.org/tex4ht/)"> <meta name="originator" content="TeX4ht (http://www.tug.org/tex4ht/)"> <!-- html,3 --> <meta name="src" content="userhtml.tex"> <link rel="stylesheet" type="text/css" href="userhtml.css"> </head><body > <!--l. 1--><div class="crosslinks"><p class="noindent">[<a href="userhtmlsu32.html" >next</a>] [<a href="userhtmlse4.html" >prev</a>] [<a href="userhtmlse4.html#tailuserhtmlse4.html" >prev-tail</a>] [<a href="userhtmlsu23.html#tailuserhtmlse5.html">tail</a>] [<a href="userhtml.html#userhtmlsu28.html" >up</a>] </p></div> <h3 class="sectionHead"><span class="titlemark">5 </span> <a id="x35-720005"></a>Communication routines</h3> <!--l. 7--><p class="noindent" >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 <a href="userhtmlse6.html#x40-770006">6<!--tex4ht:ref: sec:toolsrout --></a>. <div class="subsectionTOCS">  <span class="subsectionToc" >5.1 <a href="userhtmlsu26.html#x36-730005.1">psb_halo — Halo Data Communication</a></span> <br />  <span class="subsectionToc" >5.2 <a href="userhtmlsu27.html#x37-740005.2">psb_ovrl — Overlap Update</a></span> <br />  <span class="subsectionToc" >5.3 <a href="userhtmlsu28.html#x38-750005.3">psb_gather — Gather Global Dense Matrix</a></span> <br />  <span class="subsectionToc" >5.4 <a href="userhtmlsu29.html#x39-760005.4">psb_scatter — Scatter Global Dense Matrix</a></span> </div> <!--l. 1--><div class="crosslinks"><p class="noindent">[<a href="userhtmlsu32.html" >next</a>] [<a href="userhtmlse4.html" >prev</a>] [<a href="userhtmlse4.html#tailuserhtmlse4.html" >prev-tail</a>] [<a href="userhtmlse5.html" >front</a>] [<a href="userhtml.html#userhtmlsu28.html" >up</a>] </p></div> <!--l. 1--><p class="indent" > <a id="tailuserhtmlse5.html"></a> </body></html>