Date: Fri, 11 Sep 2015 00:04:21 +0800 From: Lei Zhang <zhanglei.april@...il.com> To: john-dev@...ts.openwall.com Subject: Re: SHA-1 H() On Sep 9, 2015, at 11:43 PM, Lei Zhang <zhanglei.april@...il.com> wrote: > >> What we need for benchmarking is the maximum number of threads supported >> in hardware on a certain number of CPU cores (on 1 core is OK if you >> can't reliably use the entire machine's cores). So on POWER8 I guess >> you'll run 8 threads all locked to one physical CPU core. You should be >> able to do that with OpenMP env vars (affinity). > > I'll post the updated results later. The format prefix 'pbkdf2-hmac-' is omitted below. On ARM (2xOMP): [before] MD4: 2576 c/s real, 1288 c/s virtual MD5: 1651 c/s real, 825 c/s virtual SHA1: 578 c/s real, 290 c/s virtual [after] MD4: 2608 c/s real, 1304 c/s virtual MD5: 1600 c/s real, 803 c/s virtual SHA1: 501 c/s real, 250 c/s virtual MD4 becomes a little bit faster; MD5 & SHA1 become slower. On Power (8xOMP, bound to a single core) [before] MD4: 28248 c/s real, 3531 c/s virtual MD5: 19980 c/s real, 2497 c/s virtual SHA1: 10593 c/s real, 1322 c/s virtual [after] MD4: 31207 c/s real, 3882 c/s virtual MD5: 19980 c/s real, 2489 c/s virtual SHA1: 11273 c/s real, 1409 c/s virtual On Power (1xOMP) [before] MD4: 13398 c/s real, 13398 c/s virtual MD5: 10626 c/s real, 10626 c/s virtual SHA1: 8533 c/s real, 8533 c/s virtual [after] MD4: 14628 c/s real, 14628 c/s virtual MD5: 10935 c/s real, 10935 c/s virtual SHA1: 8947 c/s real, 8947 c/s virtual At least there's no performance drop on Power. BTW, It looks Power's SMT performance is not very impressive. Lei
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