While Zen 5's ability to execute AVX512 often close to its regular clock speed is certainly impressive, the recurring comparison to SkylakeX is, IMHO, also a bit skewed. Both the manufacturing node and the architecture of Skylake is now several generations out of date. I am curious if the relative throttling behavior of the new P-core Xeons when running AVX512 is more similar to what you saw here with the Zen 5 9900X, or if they still suffer the significant drop in speed and long recovery time when executing your AVX512 tasks like SkylakeX did. Since those new Xeons (fabbed in Intel 3) are supposed to go head-to-head with the new EPYCs, I am sure I wouldn't be the only one who'd like to know. Maybe Intel or Supermicro can loan you a test setup 😄 to put through the paces ?
And, thanks for continuing your deep dives - they are appreciated 👍🏻!
The problem is that current gen intel consumer chips got rid AVX512 support
A head to head comparison for similar server SKUs would be interesting, though.
I suspect most zen 5 server chips are running at low enough clock speed in the first place that triggering the behavior analyzed here will be a lot trickier if possible at all
While Zen 5's ability to execute AVX512 often close to its regular clock speed is certainly impressive, the recurring comparison to SkylakeX is, IMHO, also a bit skewed. Both the manufacturing node and the architecture of Skylake is now several generations out of date. I am curious if the relative throttling behavior of the new P-core Xeons when running AVX512 is more similar to what you saw here with the Zen 5 9900X, or if they still suffer the significant drop in speed and long recovery time when executing your AVX512 tasks like SkylakeX did. Since those new Xeons (fabbed in Intel 3) are supposed to go head-to-head with the new EPYCs, I am sure I wouldn't be the only one who'd like to know. Maybe Intel or Supermicro can loan you a test setup 😄 to put through the paces ?
And, thanks for continuing your deep dives - they are appreciated 👍🏻!
The problem is that current gen intel consumer chips got rid AVX512 support
A head to head comparison for similar server SKUs would be interesting, though.
I suspect most zen 5 server chips are running at low enough clock speed in the first place that triggering the behavior analyzed here will be a lot trickier if possible at all