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

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

This topic introduces the nonblocking variants of the MPI collective communication calls. Nonblocking collective communication is available in MPI-3 and later.


After you complete this segment, you should be able to:

  • Describe the differences between blocking and nonblocking calls
  • Distinguish between MPI_Ibcast and MPI_Bcast
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