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Subject: [OMPI devel] mpirun -host does not work from r27879 and forward on trunk
From: Rolf vandeVaart (rvandevaart_at_[hidden])
Date: 2013-01-31 10:31:30


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_at_node]$ which mpirun
/home/rolf/ompi-trunk-r27877/64/bin/mpirun
[rolf_at_node]$ mpirun -np 2 -host c0-0,c0-3 hostname
c0-3
c0-0

With r27879, things are broken:
[rolf_at_node]$ setenv PATH /home/rolf/ompi-trunk-r27879/64/bin:${PATH}
[rolf_at_node]$ mpirun -np 2 -host c0-0,c0-3 hostname
--------------------------------------------------------------------------
All nodes which are allocated for this job are already filled.
--------------------------------------------------------------------------
[rolf_at_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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