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I'd like to run Open MPI "by hand". I have a few ordinary
workstations I'd like to run a code using Open MPI on. They're in
the same LAN, have unique IP addresses and hostnames, and I've
installed the default Open MPI package, and I've compiled an MPI app
against the Open MPI libraries and copied the executable to each
machine, but let's assume these machines do not have BProc, Torque,
PBS, SLURM, rsh or ssh access to each other, or NFS. I'm looking at
the shell of each node: what do I type in to make Open MPI go?
If it matters, they're OS X Macs. I am welcome to be enlightened if
I've missed the documentation for this scenario.