Usage

Example usage:

$ module load mpi/mpich/3.1.4
$ mpicc program.c -o program
$ bsub ... mpiexec.hydra ./program

Note on mpiexec.hydra: mpirun and mpiexec are present, too. mpirun and mpiexec are soft links pointing to mpiexec.hydra.

Attention

We do offer modules for MPICH. However, these do not offer Infiniband support and Mogon I does use Infiniband for high-speed communication.

Therefore, in this order:

If possible use MVAPICH2. It has a very similar interface and implementation.
If possible confine the program to one node.
If it is still required to use MPICH, to span across nodes, supply a so-called hostfile to indicate at least using TCP over ib (assuming a wrapper skript written in bash, which is submitted with bsub-command):

touch hostfile
for host in $LSB_HOSTS; do echo ${host}-ib >> hostfile; done
... mpiexec.hydra -f hostfile ...