Christopher Cameron, Steve Lantz, Brandon Barker, CAC Staff (original)
Cornell Center for Advanced Computing

Revisions: 5/2022, 1/2014, 2001 (original)

Collective communication involves communication among the members of a communicator — a set of processes (Communicators are introduced in the MPI Communicators topic). The purpose of collective communication is to manipulate a shared piece or set of information. Collective communication can be used for synchronization, data movement, and global computation.

  • Distinguish between MPI Point-to-Point and Collective communications
  • List the three subsets of collective communication
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