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Ralfp • today at 12:58 PM • 2 replies • view on HN

    CPython 3.13 went further with an experimental copy-and-patch JIT compiler -- a lightweight JIT that stitches together pre-compiled machine code templates instead of generating code from scratch. It's not a full optimizing JIT like V8's TurboFan or a tracing JIT like PyPy's;
Good news. Python 3.15 adapts Pypy tracing approach to JIT and there are real performance gains now:

https://github.com/python/cpython/issues/139109

https://doesjitgobrrr.com/?goals=5,10

Replies

pjmlp • today at 7:16 PM

Now this is great to know.

josalhor • today at 1:33 PM

While this is great, I expected faster CPython to eventually culminate into what YJIT for Ruby is. I'm not sure the current approaches they are trying will get the ecosystem there.

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