Logging mpiexec line into a pb/torque log

[Pete Wyckoff]

cdmaest at sandia.gov wrote on Tue, 15 Mar 2005 14:48 -0700:
> Does mpiexec do any logging of the actual mpiexec launch command to any
> pbs/torque log?  If not, is it possible to do?

Not really.  There is a bit of the code in the pbs_mom that connects
back to mpiexec from the launched child.  If that fails you'll find mom
log messages, but this is hopefully a very rare failure mode.

If something is broken in your PBS prologue or related system setup, the
mom will similarly complain to its log when a task tries to start, but
these errors don't find their way back to mpiexec except via the opaque
and amorphous TM_ESYSTEM.

Mpiexec complains to stderr.  That ends up wherever your job script
tells it to go.  I can't think of a way to get that to show up in the
PBS mom log, nor can I imagine exactly what you're looking for here.

		-- Pete

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