To use tuned collectives, do all I have to do is add --mca coll tuned?
I am trying to run with:
# mpirun -np 8 --mca coll tuned --mca orte_base_help_aggregate 0 ./wrf.exe
But all the processes fail with the folling message:
--------------------------------------------------------------------------
It looks like MPI_INIT failed for some reason; your parallel process is
likely to abort. There are many reasons that a parallel process can
fail during MPI_INIT; some of which are due to configuration or environment
problems. This failure appears to be an internal failure; here's some
additional information (which may only be relevant to an Open MPI
developer):
mca_coll_base_comm_select(MPI_COMM_WORLD) failed
--> Returned "Not found" (-13) instead of "Success" (0)
--------------------------------------------------------------------------
Thanks,
Craig
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