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I'm very new to MPI, my apologies if this sounds naive. I have access to an HPC cluster and am trying to run a serial script on a 40-core cluster. Here is my PBS file:

#PBS -l nodes=1:ppn=40,walltime=5:00:00 #PBS -N name cd my directory my command

The script executes properly, but the load is only for 1 CPU out of the 40 available. How do I use all of the processors (0-39)?

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It sounds like you should try GNU Parallel. The homepage is at gnu.org/software/parallel and there is some video presentation here GNU Parallel videos.

(Excuse my wage answer but I don't know what MPI, HPC and PBS is)

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