The easiest way would be to split up the file and then use Parallel::ForkManager (on Unixish OSes) or threads to start multiple tasks via system. Also see runN by Dominus, which wraps this "run multiple programs through the shell" in a short script. Also see GNU parallel, which does the same.

In reply to Re: Run a script in parallel mode by Corion
in thread Run a script in parallel mode by Anonymous Monk

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