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AVX-512 CPU Support

Discussions center on AVX-512 instruction set's performance benefits, availability and compatibility on Intel (Alder Lake, Xeons) and AMD (Zen2, Zen4) CPUs, including throttling, disabling, and comparisons to AVX2.

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adrian_b (78) dragontamer (61) janwas (44) paulmd (42) BeeOnRope (42)

Keywords

e.g CPU ARM SLEEF wikichip.org FP EVEX AMD lemire.me AVX512 avx 512 intel cores cpus instructions chips 256 xeon amd

Sample Comments

agumonkey • Jun 22, 2019 • View on HN

does avx512 bring that much of a perf advantage ?

andy_ppp • Dec 11, 2020 • View on HN

Yes sorry so am thinking of AVX-512 you are correct.

gameswithgo • Sep 20, 2019 • View on HN

does this remain true on the zen2 cpus which finally do avx properly?

wmu • Feb 20, 2019 • View on HN

Well, there is also no AVX512 mentioned.

The_rationalist • Mar 18, 2022 • View on HN

Alder lake Xeons have AVX 512 though.

mehrdadn • Sep 7, 2018 • View on HN

Is this happening with AVX-512 a realistic scenario?

continuations • Jun 22, 2019 • View on HN

Any commonly used software that benefits from AVX-512?

justinclift • Aug 8, 2023 • View on HN

Hmmm, no mention if it's something intrinsic to the AVX-512 instructions, and thus potentially affecting Zen4 processors as well?

lock-free • Dec 13, 2020 • View on HN

AVX 512 isn't available on consumer CPUs, it's not relevant here.

7speter • May 16, 2023 • View on HN

Wasn’t avx-512 disabled rather shortly after alderlakes release?