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DomandaNetwork Interface using HPC for sending mpi messages

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  • venerdì 3 aprile 2009 6.11Jeff Baxter Medaglie utenteMedaglie utenteMedaglie utenteMedaglie utenteMedaglie utente
     
    Hi Valia

    The MPI network is controlled on a cluster wide basis by the CCP_MPI_NETMASK environment variable. You can view the current setting by running "cluscfg listenvs" from an admin command prompt, and set it with a command like "cluscfg setenvs CCP_MPI_NETMASK=192.168.0.0/255.255.0.0"

    You can override the setting on a per run basis by passing in MPICH_NETMASK to mpiexec.exe ( mpiexec -env MPICH_NETMASK 10.1.0.0/255.255.0.0 )

  • sabato 4 aprile 2009 10.31Valia Medaglie utenteMedaglie utenteMedaglie utenteMedaglie utenteMedaglie utente
     
    Thank you very much indeed. But may be there are two network interfaces having the same subnet mask (I understand that it is infrequent occurrence). What to do in this situation  and what network interface will be used for sending mpi messages?