The microblog: 2021.01.10 13:46:52

2021.01.10 13:46:52 (1348249950707060736) from Daniel J. Bernstein, replying to "darix (@darixzen)" (1348247677444755456):

It's slightly over 5000 on the 1st-generation Zen microarchitecture; see the "rumba7" note on the web page. Was expecting to pick up some newer Zen boxes (faster AVX etc.) for cryptographic benchmarking during 2020, but there were many ways that 2020 didn't exactly go as planned.


2021.01.10 13:36:43 (1348247397843968000) from Daniel J. Bernstein:

Now under 3900 Skylake cycles for code that seems to compute inverses mod 2^255-19: This is further work with @bo_yin, also using ideas from Greg Maxwell and @pwuille. Still exploring speeds, still haven't verified the code, so don't put into production.

2021.01.10 13:37:50 (1348247677444755456) from "darix (@darixzen)":

how many cycles does it needs on a recent ryzen cpu?