Basic HTML version of Foils prepared August 29 98

Foil 17 OpenMP Synchronization

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 Implicit barriers wait for all threads
  • DO, END DO
  • SECTIONS, END SECTIONS
  • SINGLE, END SINGLE
  • MASTER, END MASTER
  • NOWAIT at END can override synch
  • Global barriers ? all threads must hit in the
  • same order
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