Comment Comment by haecceity AVX-512 causes frequency throttling for thermal reasons.https://lemire.me/blog/2018/08/25/avx-512-throttling-heavy-i...https://lemire.me/blog/2018/08/24/trying-harder-to-make-avx-...https://lemire.me/blog/2018/08/15/the-dangers-of-avx-512-thr...Any performance gain from fewer cycle cost may be lost from the CPU being slower. Maybe there are situations where AVX-512 is faster but how is one to reason about performance when some instructions can slow the CPU. parent haecceity 6 years ago
https://lemire.me/blog/2018/08/25/avx-512-throttling-heavy-i...
https://lemire.me/blog/2018/08/24/trying-harder-to-make-avx-...
https://lemire.me/blog/2018/08/15/the-dangers-of-avx-512-thr...
Any performance gain from fewer cycle cost may be lost from the CPU being slower. Maybe there are situations where AVX-512 is faster but how is one to reason about performance when some instructions can slow the CPU.