[mvapich-discuss] Stupid question about MPI Communicators

Mike Heinz michael.heinz at qlogic.com
Thu Jun 9 14:28:22 EDT 2011


If I create two communicators with the exact same members, are they considered to be the same communicator?  That is, if I create Communicator A and Communicator B with the same members, and Rank-a sends via A, will Rank b receive it while listening to Communicator B?

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