<div>For the sake of others as easily confused as myself, I note (now, thanks!) that OpenMP and OpenMPI are two different things:</div>
<div>OpenMP (an alternative to the MPI method) is <a href="http://en.wikipedia.org/wiki/OpenMP">http://en.wikipedia.org/wiki/OpenMP</a></div>
<div>OpenMPI (an implementation of MPI) is <a href="http://en.wikipedia.org/wiki/OpenMPI">http://en.wikipedia.org/wiki/OpenMPI</a></div>
<div>Cool.</div>
<div>Peter<br><br></div>
<div class="gmail_quote">On Nov 28, 2007 8:49 AM, Charlie Peck <<a href="mailto:charliep@cs.earlham.edu">charliep@cs.earlham.edu</a>> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div class="Ih2E3d">On Nov 28, 2007, at 8:04 AM, Jeffrey B. Layton wrote:<br><br>> If you don't want to pay money for an MPI, then go with Open-MPI.<br>> It too can run on various networks without recompiling. Plus it's
<br>> open-source.<br><br></div>Unless you are using a gigabit ethernet, Open-MPI is noticeably less<br>efficient that LAM-MPI over that fabric.<br><br>I suspect at some point in the future gige will catch-up but for now
<br>my (limited) understanding is that the Open-MPI folks are focusing<br>their time on higher bandwidth/lower latency fabrics than gige.<br><font color="#888888"><br>charlie<br></font>
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