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

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CHAPTER 1

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No Time to Read This Book?

We know what it feels like to be under pressure. Try out a few quick and proven optimization stunts described below. They may provide a good enough performance gain right away.

There are several parameters that can be adjusted with relative ease. Here are the steps we follow when hard pressed:

  • Use Intel MPI Library1 and Intel Composer XE2
  • Got more time? Tune Intel MPI:
    • Collect built-in statistics data
    • Tune Intel MPI process placement and pinning
    • Tune OpenMP thread pinning
  • Got still more time? Tune Intel Composer XE:
    • Analyze optimization and vectorization reports
    • Use interprocedural optimization

Using Intel ...

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