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Revision as of 11:45, 22 August 2012 by Xalid (talk | contribs) (MCA parameter files)

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MCA parameter files

If you want to permanently use some MCA parameter settings, you can create a file $HOME/.openmpi/mca-params.conf, e.g.:

cat $HOME/.openmpi/mca-params.conf
btl_tcp_if_exclude = lo,eth1

Handling SSH key issues

This trick avoids a confirmation message asking "yes" when asked by SSH if a host should be added to known_hosts:

   ssh -q -o StrictHostKeyChecking=no 

So with OpenMPI it can be used as

   mpirun --mca plm_rsh_agent "ssh -q -o StrictHostKeyChecking=no"

Running applications on Multiprocessors/Multicores

Process can be bound to specific sockets and cores on nodes by choosing right options of mpirun.


PERUSE Specification