Re:Vectorized and performance-portable Quicksort
by MontyCarloHall on Saturday June 04, 2022 @01:48PM
(#31623204)
>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.
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...