Arch Linux CachyOS Benchmarks Of x86-64-v3 & x86-64-v4 Repositories

[ptr1337]

Just to be clear, we are not comparing v3 vs v4 but cachyos v3-*packages* vs cachyos v4-*packages*. E.g. did somebody enable AVX512 support in the SVT-AV1 pkgbuild? Probably not. So this does not tell use anything about AVX512.

Yes, in svt-av1 the support is not enabled, since it is directly rebuild from arch.
We already prepared a new PKGBUILD for avx512 and will be pushed after testing to the repo.

[stiiixy]

I downloaded fresh CachyOS KDE Full the other day to install on a Envy x360 2-in-1, and it required an internet connection. Something I wouldn't expect and have never seen before on a full install, and something I couldn't do because it (and Fedora 40 KDE Nightly) wouldn't pick up the MTK WiFi controller. It likely did, but didn't enable.

Anyway, had to get on with life as I don't have days to spare testing unfortunately.

[Anux]

So I noticed in the new article about CentOS v3 packages there were much higher gains (more like you'd expect) for AVX 512.

Look at OSPRay scivis/real_time in https://www.phoronix.com/review/amd-zen4-avx512 it has ~100% gain for AVX 512 while it is actually slower in this benchmark. And in https://www.phoronix.com/review/amd-...per-pro-7995wx the absolute value for the same threadripper is 27 for generic (v1) while in CachyOS it is 25 for all versions.

Either the benchmark was flawed or CachyOS doesn't use any AVX. Or it already uses AVX in it's v1 builds.