Using 100% of all cores with the multiprocessing module

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To use 100% of all cores, do not create and destroy new processes.

Create a few processes per core and link them with a pipeline.

At the OS-level, all pipelined processes run concurrently.

The less you write (and the more you delegate to the OS) the more likely you are to use as many resources as possible.

python p1.py | python p2.py | python p3.py | python p4.py ...

Will make maximal use of your CPU.

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