equivalent of mpirun -nolocal option?

Pete Wyckoff pw at osc.edu
Thu Apr 8 15:16:44 EDT 2004


rbbrigh at valeria.mp.sandia.gov said on Thu, 08 Apr 2004 11:22 -0600:
> Is there an mpiexec equivalent to the mpirun -nolocal option?
> I'd like to be able to start a job where the mpiexec process
> is on a separate host from the MPI application process(es).

Ah, no.  It's not even possible to hack via config-file stuff
for a generic MPI code either, unless you're allowed to recompile
the code to exit task 0, form a new smaller communicator, and continue.

But you could toss in this option toward the end of get_hosts().
Just chop off tasks[0] while the name matches the original tasks[0].name
and move up everybody else in the array, reducing numtasks.  I'll
fold it in to the distro if you get it to work (mostly) and find it useful.

		-- Pete


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