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<p>Hallo Mark,</p>
<p><br></p>
<p>Mittwoch, 23. April 2008, meintest Du:</p>
<p><br></p>
<p><span class=rvts6>>> Can anyone give me a quick comparison of OpenMPI vs. MPICH? I've always</span></p>
<p><span class=rvts6>>> used MPICH (I never liked lam), and just recently heard about OpenMPI.</span></p>
<p><span class=rvts6>>> Anyone here using it?</span></p>
<p><br></p>
<p><span class=rvts7>MH> openmpi is a genetic descendent of lam (with significant other contributors,</span></p>
<p><span class=rvts7>MH> of course). I have not seen any good comparison which makes technical or</span></p>
<p><span class=rvts7>MH> performance arguments in favor of open-mpi vs mpich, unfortunately.</span></p>
<p><span class=rvts7><br></span></p>
<p>From what i saw OpenMPI has several advantages:</p>
<p><br></p>
<p>- better control of jobs, better integration with queuing systems</p>
<p>- better performance on MultiCore Systems because of good shared-memory-implementation</p>
<p>- without having a real proof: i had the feeling that complex operations are more efficient in OpenMPI</p>
<p>- support for a lot of Interconnects beside TCP/IP based communication</p>
<p><br></p>
<p>I don't see a real point chosing mpich over OpenMPI.</p>
<p><br></p>
<p>Cheers, Jan </p>
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