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OK, so maybe not heroic. But my attempts at getting MPI running are much like an uphill battle.
I managed only partly, so far, so here are some notes:
- I used passwordless-hostbased-ssh logins between the nodes
- I used Torque as the batch system
- I used the RHEL4 provided openmpi (that does not include the tm module, hence the ssh stuff)
- It worked with torque and mpirun
- ... but not with mpi-start.
- It does not yet work with CREAM, als all the processes are run on the same node.