[Beowulf] multi-threading vs. MPI

Martin Siegert siegert at sfu.ca
Sat Dec 8 17:04:50 EST 2007


On Sat, Dec 08, 2007 at 01:17:25PM -0800, Greg Lindahl wrote:
> On Sat, Dec 08, 2007 at 12:55:07PM -0800, Martin Siegert wrote:
> 
> > In short: the performance of OpenMP code isn't even close to that of the
> > MPI code.
> 
> Thanks for more concrete data, Martin, do you have a URL for some more
> detailed results? I'd love to have it next time this question comes
> up.

I'll post a note about our benchmarking work in a few weeks (the work
isn't quite finished yet) and ask for comments at that time.

Nevertheless, if you know of well performing OpenMP applications I am
happy to include them in our benchmark collection.

Cheers,
Martin

-- 
Martin Siegert
Head, Research Computing
WestGrid Site Lead
Academic Computing Services                phone: 778 782-4691
Simon Fraser University                    fax:   778 782-4242
Burnaby, British Columbia                  email: siegert at sfu.ca
Canada  V5A 1S6
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