ENH: Add RISC-V Vector V1.0 Support

[luyahan]

I'm currently planing in add RISC-V Vector support for NumPy.

Originally, I want to port rvv into _simd. But I found a great solution NEP-054.
I read NEP-054 (https://numpy.org/neps/nep-0054-simd-cpp-highway.html#discussion) and would like to get more information about its current status.
I noticed some PR had been opened ( #25781 and #25934 ) for the NEP-054 but still under review and discussion.
I wonder if there are any specific tasks or contributions I can undertake to assist with its progress.

And whether I should plan RVV support following the current NPY_SIMD implementation style or in the NEP-054 way?
Any suggestion or reference for this topic?

[mattip]

One way to get involved would be to join the optimization slack channel

[luyahan]

optimization slack channel

Thanks~
I send a email to numpy-team@googlegroups.com

[r-devulap]

I am not really familiar with RISC-V myself, but Google highway already supports RISC-V: RVV (1.0). Is that what you are looking for?

Looks like NumPy currently lacks both compiler time and run time cpuid detection of RISC-V SIMD features. We will need this to leverage RISC-V intrinsics (be it highway or NPY intrinsics). Perhaps you could start with adding those?

[mattip]

The place to add that would be in the vendored meson submodule, in the features component of meson.