[Beowulf] Cluster OpenMP

Lombard, David N david.n.lombard at intel.com
Tue May 16 15:21:13 PDT 2006

From: Douglas Eadline on Tuesday, May 16, 2006 1:51 PM
> >
> >
> > Maybe it will be interesting for many people here.
> >
> > In short, recompile your multithreaded OpenMP program and get a
> > version.
> Were it that simple and it all depends. With parallel computing
> and clusters in particular, deciding what *should* be parallel
> for a given hardware environment is difficult. Just because
> something is concurrent does not mean it should be executed in

Lest anyone think the whitepaper suggests performance is that simple:

"Obviously, not all applications are suitable for Cluster OpenMP. An
application with fine-grained synchronization is forced to spend a large
percentage of its time fetching data from remote nodes and paying
thousands of times more for memory accesses than it would on an SMP. An
important consideration for a potential user of Cluster OpenMP is
whether the prospective application is suitable for Cluster OpenMP."

The UserGuide.pdf linked on the web page above goes into the details.

David N. Lombard

My statements represent my opinions, not those of Intel Corporation

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