By: Andrey (andrey.semashev.delete@this.gmail.com), May 19, 2022 9:26 am
Room: Moderated Discussions
Jan Wassenberg (jan.wassenberg.delete@this.gmail.com) on May 18, 2022 10:40 pm wrote:
> Brett (ggtgp.delete@this.yahoo.com) on May 18, 2022 11:03 am wrote:
>
> > Now all 8 cores are down clocked in response and your net performance uplift of AVX512 is negative.
> You might find these results surprising: https://travisdowns.github.io/blog/2020/08/19/icl-avx512-freq.html#summary
> .
It should also be noted that in Alder Lake AVX-512 produces less heat than AVX2 in Prime95 and OCCT.
https://www.youtube.com/watch?v=Qb7Wccozk9Y
https://www.reddit.com/r/rpcs3/comments/tqt1ko/comment/i2ldynu/?utm_source=share&utm_medium=web2x&context=3
So, if anything, your AVX-512 code path has the potential of running with higher clocks than AVX2.
> Brett (ggtgp.delete@this.yahoo.com) on May 18, 2022 11:03 am wrote:
>
> > Now all 8 cores are down clocked in response and your net performance uplift of AVX512 is negative.
> You might find these results surprising: https://travisdowns.github.io/blog/2020/08/19/icl-avx512-freq.html#summary
> .
It should also be noted that in Alder Lake AVX-512 produces less heat than AVX2 in Prime95 and OCCT.
https://www.youtube.com/watch?v=Qb7Wccozk9Y
https://www.reddit.com/r/rpcs3/comments/tqt1ko/comment/i2ldynu/?utm_source=share&utm_medium=web2x&context=3
So, if anything, your AVX-512 code path has the potential of running with higher clocks than AVX2.