Basic HTML version of Foils prepared 19 September 98

Foil 15 Generalizing the Process Identifier in MPI

From MPI Message Passing Interface Computational Science for Simulations -- Fall Semester 1998. by Geoffrey C. Fox, Nancy McCracken
1 MPI supports process groups
  • Initial "all" group
  • Group management routines
    • Split group
    • Define group from list
2 All communication takes place in groups
  • Source/destination identifications refer to rank in group
  • Communicator = group + context
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