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Subject: [OMPI users] MPI_Comm_split
From: Hicham Mouline (hicham_at_[hidden])
Date: 2010-11-23 12:03:52


If I have a 256 mpi processes in 1 communicator, am I able to split that communicator, then again split the resulting 2 subgroups, then again the resulting 4 subgroups and so on, until potentially having 256 subgroups?
Is this insane in terms of performance?