3 ms·
Well, if it weren't the case and you had that core count without compromise, Phis would have come along a lot sooner with a price tag to match :) Did you happe
by reitzensteinm 10y ago
Well, if it weren't the case and you had that core count without compromise, Phis would have come along a lot sooner with a price tag to match :)
Did you happen to use the Knight's Corner or the new Knight's Landing variant? I'd be quite interested to know how KL stacks up, as naively from the specs it seems like it should be a lot more tolerant with code (but not poor memory access patterns).
- dibanez 10y agoBoth, and it agrees with your prediction. KNL's cores are each much faster than KNC's cores. A KNC core was over 10X slower than a mainstream CPU core, and a KNL core seems to only be about 4.5X slower (on my particular code). I also get linear OpenMP scaling from 1 to 64 threads on KNL, so the parallelism is all there.