Basic HTML version of Foils prepared August 29 98

Foil 7 OpenMP

From Designing and Building Parallel Programs 2: openMP Shared Memory Programming Language DoD Modernization Tutorial -- 1995-1998. by Ian Foster, Gina Goff, Ehtesham Hayder, Chuck Koelbel(Some foils prepared by Kuck & Associates, Inc.)
Two basic flavors of parallelism:
  • Coarse-grained
    • Program is broken into segments (threads) that can be executed in parallel
    • Use barriers to re-synchronize execution at the end
  • Fine-grained
    • Execute iterations of DO loop(s) in parallel

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