print mpi rank on stdout

[Ben_Foster]

When running an f90/mpi code, I would like to prefix all lines written to stdout with the rank of the mpi task, so after completion, I can sort all stdout to separate files for each mpi task. The AIX/xlf90 compiler has an env var to do this, is this possible w/ Intel? Thanks,

[TimP]

I suspect you'd have to add this explicitly to your writes. Wouldn't that be a feature of the combination of xlf90 with some specific IBM implementation of MPI? If you're talking about Intel MPI, the place to ask would be the companion HPC forum. If some other MPI, the forum for that MPI implementation.

[Ben_Foster]

Thanks TimP, I will post the question the HPC forum re Intel MPI.