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On May 18, 2007, at 4:38 PM, Steven Truong wrote:
> [struong_at_neptune 4cpu4npar10nsim]$ mpirun --mca btl tcp,self -np 1
> --host node07 hostname
> bash: orted: command not found
As you noted later in your mail, this is the key problem: orted is
not found on the remote node.
Notice that you are currently using the rsh launcher, not the Torque
launcher (presumably because you are not inside a Torque job). What
you want to check is:
rsh node07 which orted
(or use ssh -- whatever is correct for your cluster)
I suspect that orted will not be found, and that you'll need to
modify your shell startup files to set PATH / LD_LIBRARY_PATH
properly. Note that some shell startup files will exit early if they
detect that they are running on a non-interactive login. See http://
www.open-mpi.org/faq/?category=running#adding-ompi-to-path for more
Alternatively, you can simply use the absolute pathname to mpirun,
which Open MPI will interpret to mean that you want OMPI to set the
PATH/LD_LIBRARY_PATH on the remote node for you. Something like this:
/usr/local/openmpi-1.2.1/bin/mpirun --host node07 hostname
(note that the "btl" MCA parameter is only relevant for MPI executables)