Basic HTML version of Foils prepared August 29 98

Foil 25 Collective Communication

From Designing and Building Parallel Programs 3: MPI Message Passing System DoD Modernization Tutorial -- 1995-1998. by Ian Foster, Gina Goff, Ehtesham Hayder, Chuck Koelbel
Provides standard interfaces to common global operations
  • Communications: broadcast
  • Computation: summation
A collective operation uses a process group
  • All processes in group call same operation at (roughly) the same time
Message tags not needed (generated internally)

© Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

If you have any comments about this server, send e-mail to webmaster@npac.syr.edu.

Page produced by wwwfoil on Sun Apr 11 1999