[kbolino]

Yeah, the extensions exist, and as pointed out by a sibling comment to yours, have been implemented in supercomputer cores made by Fujitsu. However, as far as I know, neither Apple nor Qualcomm have made any desktop cores with SVE support. So the biggest reason there's no desktop software for it is because there's no hardware support.

[jsheard]

ARMs Neoverse IP does support SVE, so it's at least already relevant in cloud applications. Apparently AWS Graviton3 had 256bit SVE, but Graviton4 regressed back to 128bit SVE for some reason?

https://ashvardanian.com/posts/aws-graviton-checksums-on-neo...

[camel-cdr]

The problem with SVE is that ARM vendors need to make NEON as fast as possible to stay competitive, so there is little incentive to implement SVE with wider vectors.

Graviton3 has 256-bit SVE vector registers but only four 128-bit SIMD execution units, because NEON needs to be fast.

Intel previously was in such a dominant market position that they could require all performance-critical software to be rewritten thrice.

[my123]

The Oryon 3rd gen in the Snapdragon X2 has SVE2 (as does NVIDIA N1x, currently pre-launched of sorts on the DGX Spark)

[justincormack]

I think the CIX P1 has support, but I havent got one yet to verify, this is a cheap SOC core.