Test Results for AMD Zen 5 by Agner Fog

Re:Test Results for AMD Zen 5 by Agner Fog by alberth on Saturday July 26, 2025 @03:38PM (#44696447)

While an interesting read, the title is a bit misleading since I didn’t see any actual “test results” in the post.

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Re:Test Results for AMD Zen 5 by Agner Fog by Someone on Saturday July 26, 2025 @03:45PM (#44696482)

AMD’s documentation for the CPU may or may not state such things as “There are six integer ALUs, four address generation units, three branch units, four vector ALUs, and two vector read/write units”, but even if it does, Agnes Fog runs actual code to check that, and often discovers corner cases that the official documentation doesn’t mention.

So, he black box tests the CPU to try and discover its innards.

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Re:Test Results for AMD Zen 5 by Agner Fog by titanomachy on Saturday July 26, 2025 @04:10PM (#44696613)

> Agnes Fog

Agner

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Re:Test Results for AMD Zen 5 by Agner Fog by ooopdddddd on Saturday July 26, 2025 @03:41PM (#44696467)

The detailed results are in the links at the bottom of the post.

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Re:Test Results for AMD Zen 5 by Agner Fog by djoldman on Saturday July 26, 2025 @04:31PM (#44696743)

They are linked at the bottom of Mr. Fog's post. For example on page 142 of this:

https://www.agner.org/optimize/instruction_tables.pdf

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