5 ms·
Nice. Effect of frequency downclocking when AVX-512 instructions get used? https://en.wikipedia.org/wiki/Advanced_Vector_Extensions#Downclocking https://en.wi
by OliverJones 3y ago
Nice.
Effect of frequency downclocking when AVX-512 instructions get used?
https://en.wikipedia.org/wiki/Advanced_Vector_Extensions#Downclocking https://en.wikipedia.org/wiki/Advanced_Vector_Extensions#Dow...
- janwas 3y agoCross-posting from https://news.ycombinator.com/item?id=36273544 https://news.ycombinator.com/item?id=36273544: We looked into this [1] and conclude: - throttling is a non-issue on Xeon Gold/Platinum; - AVX-512 startup overhead can hurt on Skylake, but AVX-512 is still a net win for data sizes >= 100 KiB. - Startup overhead is a non-issue on Icelake and AMD Zen4. 1: https://github.com/google/highway/blob/master/hwy/contrib/sort/README.md#study-of-avx-512-downclocking https://github.com/google/highway/blob/master/hwy/contrib/so...