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Author oconnor663
Recipients Zooko.Wilcox-O'Hearn, christian.heimes, corona10, gregory.p.smith, jstasiak, kmaork, larry, lemburg, mgorny, oconnor663, xtreak
Date 2022-03-24.20:30:46
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <1648153846.15.0.562958603673.issue39298@roundup.psfhosted.org>
In-reply-to
Content 
I did reply to that point above with some baseless speculation, but now I can back up my baseless speculation with unscientific data :)

https://gist.github.com/oconnor663/aed7016c9dbe5507510fc50faceaaa07

According to whatever `powerstat -R` measures on my laptop, running hardware-accelerated SHA-256 in a loop for a minute or so takes 26.86 Watts on average. Doing the same with AVX-512 BLAKE3 takes 29.53 Watts, 10% more. Factoring in the 4.69x difference in throughput reported by those loops, the overall energy/byte for BLAKE3 is 4.27x lower than SHA-256. This is my first time running a power benchmark, so if this sounds implausible hopefully someone can catch my mistakes.
History
Date User Action Args
2022-03-24 20:30:46oconnor663setrecipients: + oconnor663, lemburg, gregory.p.smith, larry, christian.heimes, mgorny, Zooko.Wilcox-O'Hearn, jstasiak, corona10, xtreak, kmaork
2022-03-24 20:30:46oconnor663setmessageid: <1648153846.15.0.562958603673.issue39298@roundup.psfhosted.org>
2022-03-24 20:30:46oconnor663linkissue39298 messages
2022-03-24 20:30:46oconnor663create