3 ms·
Its really weird how poorly EPYC fares in the reconstruction benchmarks, what's going on there?
by zokier 3y ago
Its really weird how poorly EPYC fares in the reconstruction benchmarks, what's going on there?
- dijit 3y agoI thought it was spelled out quite clearly in TFA: "GFNI". GFNI Was only added to AMD CPUs in Zen4, basically the "just released" server CPUs (codename: Genoa) which are currently quite difficult to procure, even 6 months after announcement.
- zokier 3y agoI don't see how that explains the encoding:reconstruction perf relationship. Looking at the first pair (12+4 encoding), epyc is about twice as fast as avx2-intel and four times as fast as graviton at encoding. But in reconstruction its two to three times slower than either.
- re-thc 3y agoGenoa’s been delayed due to memory controller issues.
- rektide 3y agoEven running AVX2, Intel is walloping the 48-core Epyc, on decode specifically.