Re: git: b0b4d9e1eae8 - main - */*: Switch to NumPy 2.x

11.05.2026 22:29, Charlie Li пишет:
> Max Brazhnikov wrote:
>> -Dcpu-baseline="none" is safe to commit and should be committed if we 
>> claim support for older CPU.
>>
> This is not as clear-cut as it seems. CPU dispatching on top of 
> -Dcpu-baseline=none does not cover all optimised code paths that 
> newer/feature-rich CPUs can use.
Official documentation says otherwise: 
https://numpy.org/devdocs/reference/simd/build-options.html
> Given that numpy is a very performance-sensitive software and 
> considering its userbase, this kind of performance hit can be a 
> showstopper.
>
> The base system can claim support for older CPU however it wants, but 
> it does not mean individual third-party software has to do the same. 
> Of course we in ports should make our best efforts in this regard but 
> the expected majority use-cases and configurations need to take 
> precedence.
>
> I'm not opposed to an option that makes clear that -Dcpu-baseline=none 
> is both not the default and strongly discouraged outside of CPUs older 
> than or lack features of -Dcpu-baseline=min.

How many years to wait for the "right" decision?

-- 
Best regards,
Vladimir Druzenko