[Beowulf] OpenMP vs. MPI benchmark for multi-core machines?

Douglas Eadline deadline at eadline.org
Thu Apr 17 16:21:51 EDT 2008


you may want to look at this:

http://www.linux-mag.com/id/4608

(registration required)

NAS parallel OpenMP vs NAS Parallel MPI on
clovertown node (dual socket, 8 cores total).
As Greg said, the programs are different
but, I suppose it is better than nothing.
I should mention that such comparisons are hard
because a good shared memory version of an
algorithm and an MPI version of the same problem
are usually very different. If you can find a copy,
Pfister's "In Search of Clusters" devotes a
whole chapter to this topic (in detail).

 --
 Doug


> Hi there,
>
> Is there such a benchmark that I can refer to? I am increasingly
> convinced that OpenMP/pthread is required only in extreme cases, but I
> need some numbers to prove that (to myself and my advisor).
>
> Best,
>
> --
> Eray Ozkural, PhD candidate. Comp. Sci. Dept., Bilkent University, Ankara
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>


--
Doug
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