deciding among subprocess, multiprocessing, and thread in Python?

Question

I\'d like to parallelize my Python program so that it can make use of multiple processors on the machine that it runs on. My parallelization is very simple, in that all the

Answer 1

To use multiple processors in CPython your only choice is the multiprocessing module. CPython keeps a lock on it's internals (the GIL) which prevents threads on other cpus to work in parallel. The multiprocessing module creates new processes ( like subprocess ) and manages communication between them.