5 ms·
> In addition Chacha20 is not nearly as fast as AES when using the AVX-512 Vector AES instructions. Note that Cloudflare opted for Xeon Silver chips that aren'
by Twirrim 7y ago
> In addition Chacha20 is not nearly as fast as AES when using the AVX-512 Vector AES instructions.
Note that Cloudflare opted for Xeon Silver chips that aren't good at AVX-512, unless doing pure AVX-512 operations.
- ZeroCool2u 7y agoAnd their 10th gen prod servers switched to AMD which, as far as I know, have SIMD support, but not AVX-512 support specifically.
- dr_zoidberg 7y agoThat is correct, Zen 2 doesn't support AVX512 (no AMD chip does).