I have stumbled into a problem with the -host argument. This problem appears
to be introduced with changeset r27879 on 1/19/2013 by rhc.
With r27877, things work:
[rolf@node]$ which mpirun
/home/rolf/ompi-trunk-r27877/64/bin/mpirun
[rolf@node]$ mpirun -np 2 -host c0-0,c0-3 hostname
c0-3
c0-0
With r27879, things are broken:
[rolf@node]$ setenv PATH /home/rolf/ompi-trunk-r27879/64/bin:${PATH}
[rolf@node]$ mpirun -np 2 -host c0-0,c0-3 hostname
--------------------------------------------------------------------------
All nodes which are allocated for this job are already filled.
--------------------------------------------------------------------------
[rolf@Fermi-Cluster nv]$
Note: Could not compile r27878 so did not test that.
I can only run processes on the same node as mpirun.
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