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Optimizing HPC Applications with Intel® Cluster Tools by Christopher Dahnken, Michael Klemm, Andrey Semin, Alexander Supalov

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Optimizing Application for Intel MPI

At last, it is time to turn to the application itself. That is, unless you noticed much earlier a grave and apparent problem that went against all good MPI programming practices. In that case, you may want to try and fix that problem first, provided you make double sure it is that problem that is causing trouble—as usual.

You can sensibly apply the advice contained in this section only if you have access to the application source code. It may be way out of reach in most industrial situations in the field. This situation is, however, different if you are using open-source software or have been graciously granted a source code license to a piece of closed-source code. Thus, we are talking about real optimization ...

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