AVX512 subsets *NOT* supported on AMD Zen4 (Epyc 9000, Ryzen 7000): - AVX512ERAVX512PF (Knights Landing) - AVX512 4VNNIW, 4FMAPS (Knights Mill) - VP2INTERSEC

AVX512 subsets *NOT* supported on AMD Zen4 (Epyc 9000, Ryzen 7000): - AVX512ERAVX512PF (Knights Landing) - AVX512 4VNNIW, 4FMAPS (Knights Mill) - VP2INTERSECT (Tiger Lake) - FP16 (Cooper Lake) You can see a table here showing cpu's AVX512 support[0], and wikicpu also has that data in a list [1], along with more detailed info. It's worth noting all data I can find specifically talks about AVX512 support in terms of the architecture (Zen4), not anything specific product families such as ryzen vs epyc implementations. It's possible there is/will be some artificial product segmentation going on (like what Intel did retroactively with Alder Lake to disable AVX512) but I've not seen any mention of it regarding AMD's products. I mention this because Intel has kinda been all over the place with AVX512 implementation, and there's a big difference between Enterprise and Consumer in how they deliver/treat AVX512. AMD obviously is a different company with different practices, but with only 1 generation to go off of it's hard to speculate on a trend, and AVX512 can be an expensive implementation. Point being: It's unfortunately complicated AND subject to change. The "big" one here for ML/DL/AI vs Intel's Sapphire Rapids (and presumably going forward) is FP16 not being supported on AMD. Of course, it's contextual as to whether that's relevant to you though. [0]: https://en.wikipedia.org/wiki/AVX-512?oldformat=true#CPUs_with_AVX-512 https://en.wikipedia.org/wiki/AVX-512?oldformat=true#CPUs_wi... [1]: https://en.wikichip.org/wiki/amd/microarchitectures/zen_4#New_Instructions https://en.wikichip.org/wiki/amd/microarchitectures/zen_4#Ne... My experience is primarily with Intel's implementation of AVX512 in their Xeon products for DL/AI. I can expand on that if interested, but unfortunately haven't had a chance to play with AMD Zen4 yet in that domain, and it's gonna be a while till I can get hands on with a Epyc 9000 probably. EDIT: Fixed typos