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
