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Latest AVX-512 Optimization For FFmpeg Shows Wild Improvement On AMD Ryzen (www.phoronix.com)

submitted 1 week ago by [email protected] to c/[email protected]

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[–] [email protected] 5 points 1 week ago (1 children)

yes, zen4 is the ryzen 7xxx ans onwards. I think they will change the naming scheme again after the 9xxxs now though.

In my case my 5xxx cpu shows avx2 (256bit) in /proc/cpuinfo, I assume you will find avx512 there if you have it.

Also apparently there are mobile and server cpus with 7xxx names that are zen3. It is a mess certainly.

[–] [email protected] 2 points 1 week ago

Yes, avx512 shows up in cpuinfo, although with the spec consisting of many optional modules and not being a monolithic thing, each supported part will show up separately.

My 7800X3D has these avx512 flags: avx512f avx512dq avx512ifma avx512cd avx512bw avx512vl avx512_bf16 avx512vbmi avx512_vbmi2 avx512_vnni avx512_bitalg avx512_vpopcntdq