I'v had a lot of success with cython's parallelism. The key is to release the GIL in tight inner functions of big loops. You can then parallelize the loop by i

I'v had a lot of success with cython's parallelism. The key is to release the GIL in tight inner functions of big loops. You can then parallelize the loop by iterating over calls to the nogil function or "with nogil" block. The support for only openmp kind of sucks, but I'm working on a Linux cluster so it doesn't bother me except when I'm on my laptop.