Basic HTML version of Foils prepared August 29 98

Foil 22 OpenMP Environment & Runtime (2)

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.)
1 OMP_NUM_THREADS: How many to use in parallel region?
  • OMP_GET_NUM_THREADS,
  • OMP_SET_NUM_THREADS
  • Related: OMP_GET_THREAD_NUM,
  • OMP_GET_MAX_THREADS, OMP_GET_NUM_PROCS
2 OMP_DYNAMIC: Should runtime system choose number of threads?
  • OMP_GET_DYNAMIC, OMP_SET_DYNAMIC
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