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Server Gurus Discussions

tagoo
Adept I
‎09-29-2022 01:17 PM

AMD64 Architecture Programmer's Manual - Zen4

Any news on when the updated AMD64 Architecture Programmer's Manuals will be out?

 

AVX512 support, among other changes, would be great to have officially documented and available for use.

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stbasset
Staff
Staff
‎10-17-2022 08:23 PM

See https://www.amd.com/en/support/tech-docs/amd64-architecture-programmers-manual-volumes-1-5 for the  updated programmer's manual.

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tagoo
In response to stbasset
Adept I
‎10-23-2022 11:37 AM

Unfortunately, even with the Oct 2022 update, this missing a very large amount of functionality that is new with Zen4.

Most notably the entire set of AVX512 ISAs, a good amount of new CPUID entries, and other known functionality introduced is not present.

This requires developers to use the Intel manuals instead and figure things out via trial and error.

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