How to use C extensions in python to get around GIL

Question

I want to run a cpu intensive program in Python across multiple cores and am trying to figure out how to write C extensions to do this. Are there any code samples or tutorials

Answer 1

Take a look at multiprocessing. It's an often overlooked fact that not globally sharing data, and not cramming loads of threads into a single process is what operating systems prefer.

If you still insist that your CPU intensive behaviour requires threading, take a look at the documentation for working with the GIL in C. It's quite informative.