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PDriver, the Parametric Job Driver, has support for running MPI Jobs. The following two options in the PDS language supported by PDriver are used when running MPI:

mpiEnabled - boolean switch which indicates the job is to be run in MPI mode. An MPI mode job is based on a groupsize (see below), and each "group step" being treated as a single step of the job. If a single task in an MPI job, all other tasks in that "group step" are rescheduled.

mpiGroupsize - The number of nodes used in each MPI program. The number of tasks for the job must be evenly divisible by this setting.

For more information on writing PDS scripts for PDriver, see The "PDriver" chapter in the GridServer Developer's Guide.