Dear all, I have a problem: In my parallel program each CPU compute a value, let's say eff.
First of all, I would like to know the maximum value. This for me is quite simple, I apply the following: CALL MPI_ALLREDUCE(eff, effmaxWorld, 1, MPI_DOUBLE_PRECISION, MPI_MAX, MPI_MASTER_COMM, MPIworld%iErr) However, I would like also to know to which CPU that value belongs. Is it possible? I have set-up a strange procedure but it works only when all the CPUs has different values but fails when two of then has the same eff value. Is there any intrinsic MPI procedure? in anternative, do you have some idea? really, really thanks. Diego Diego
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