Depends on which launcher you are using. My understanding is that you can use torque to launch the MPI processes on remote nodes, but you must compile this support into OpenMPI. Please, someone correct me if I am wrong.
Hello,On my cluster running moab and torque, I cannot ssh without a password between compute nodes. I can however request multiple node jobs fine. I was wondering if passwordless ssh keys need to be set up between compute nodes in order for mpi applications to run correctly.
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