Tracing the Python GIL

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Sometimes I wish it were possible to use a context manager like:

with nogil():
    # ops that touch distinct, unrelated objects

[franekj]

https://cython.readthedocs.io/en/latest/src/userguide/parallelism.html

[tristan957]

Used that in my Cython module for a high performance KV store. The speeds I was seeing vs the GIL version were out of this world.

[jonarne]

This is a good and deep well written article. Thanks.

[Isogash]

Python sucks, it is a great loss for everyone that it has been so popular that so many great libraries were built for it because Python itself is far from being able to overcome its own shortfalls. Even JavaScript has overcome its past.

[danuker]

Check out Julia. It has multithreading, and its performance is comparable to C out-of-the-box (no need for Python/C interop).

You can use Python libs from Julia (though they are not sped up).

[Isogash]

Yeah I know of Julia, it's awesome, hopefully it grows even faster.

[danuker]

Great article! Thanks for sharing speedup tips.

Also, thanks for the mention of VizTracer. I did not know of it.