18.337 WebMeeting

Message from: Kris Joshi (kjoshi@MIT.EDU)
About: mpirun -np 2 -machinename hosts <program> doesn't always work

Wed, 19 Feb 97 02:21:31 EST

  • Next message: Joe Kanapka: "mpirun"
    I find that although the shared memory MPI

    mpirun.ch_shmem -np 2 <program>

    always seems to work, the distributed memory version

    mpirun -np 2 -machinefile hosts <program>

    does not work with programs "pingpong" or "hello".
    But it works fine with program "pi".

    The error I get is

    0 - Error in MPI_INIT : MPIRUN chose the wrong device ch_p4;
    program needs device ch_shmem
    [0] Aborting program !

    I am of course using the entire path
    /usr/local/mpi.old/bin/ for the commands.

    What gives?

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