Search found 3 matches

by RobertS
2022-09-27, 5:53:29
Forum: Agner's CPU blog
Topic: AMD Zen 4 Ryzen 7000 series with AVX-512 support
Replies: 10
Views: 131427

Re: AMD Zen 4 Ryzen 7000 series with AVX-512 support

according to phoronix test, there is noticeable performance increase when using AVX-512 even when it uses 256bit units and unlike on intel, it does not dramatically increase power consumption or lower clocks
https://www.phoronix.com/review/amd-zen4-avx512
by RobertS
2021-02-03, 8:20:21
Forum: Agner's CPU blog
Topic: AMD Ryzen 5800
Replies: 7
Views: 86881

Re: AMD Ryzen 5800

Actually, with my question I meant that for ZEN/ZEN2 you have a remark regarding micro-op cache The processor has an extra cache for decoded instructions. The size is indicated as 2048 µops for Zen 1 and 4096 µops for Zen 2, with a line size of 8 µops, but the effective size was measured to only sli...
by RobertS
2021-02-02, 8:41:22
Forum: Agner's CPU blog
Topic: AMD Ryzen 5800
Replies: 7
Views: 86881

Re: AMD Ryzen 5800

is the utilization of micro-op cache in single thread scenario better as in previous generations, where single thread used only half of the cache?