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by MontyCarloHall
1482 days ago
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>On Ice Lake Xeon the penalty for using the AVX-512 features on a single core is -100MHz. That is a penalty due to licensing [0], not thermal throttling. As I wrote elsewhere, I’ve seen my clockspeed get cut in half across all cores on a physical die when running AVX-heavy operations for a sustained period of time, due to thermal throttling. [0] https://travisdowns.github.io/blog/2020/08/19/icl-avx512-fre... |
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