On: When optimising code, never guess, always measure

[blattimwind]

I mean this is CPython, so its bytecode never, ever runs in parallel anyway.

[jhayward → blattimwind]

You mean concurrently, if you're referring to the GIL.

[blattimwind → jhayward]

No. I mean parallel.

concurrent: multiple tasks at the same time are "in progress"

parallel: multiple tasks are progressing at the same time

[jhayward → blattimwind]

Are you certain that CPython doesn't compile to any of the SIMD parallel instructions available in e.g., AVX?

You mean concurrent.