Not sure why this is downvoted, I never had much issues with the GIL as well. Multiprocessing does the parallel computation pretty well as long as the granular

Not sure why this is downvoted, I never had much issues with the GIL as well. Multiprocessing does the parallel computation pretty well as long as the granularity is not too small. When smaller chunks are needed most of the time that's something better done from an extension.