I would suggest that you start by assuming that the error means what it says. Likely something in /usr/local/apps/mpich/bin/mpirun expected an argument and didn't get it.

If you have source for the code emitting the error, you could look for where that message might come from. You can also try running the problematic code by hand and see if you can track down the debugging problem.

(If you have source, then I'd suggest more informative debugging errors. See what perlstyle has to say on that topic for some good tips.)

In reply to Re: Perl execution of MPIRUN commands by tilly
in thread Perl execution of MPIRUN commands by tesswulf

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