Date: Sun, 17 Jun 2012 20:02:43 +0400 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: [patch] optional new raw sha1 implemetation On Sun, Jun 17, 2012 at 07:27:53PM +0400, Solar Designer wrote: > There's currently no speedup on XOP: > > user@...l:~/john/magnum-jumbo-cpu3/src$ ../run/john -te -fo=rawsha1_sse4 > Benchmarking: Raw SHA-1 [taviso sse4]... DONE > Raw: 21591K c/s real, 21591K c/s virtual > > user@...l:~/john/magnum-jumbo-cpu3/src$ ../run/john -te -fo=raw-sha1 > Benchmarking: Raw SHA-1 [SSE2i 8x]... DONE > Raw: 23513K c/s real, 23751K c/s virtual > > (This is a linux-x86-64-xop build.) I guess some speedup can be > achieved by adding use of XOP intrinsics into your new code - that is, > it should become faster than 23.5M c/s then. With XOP bit rotates added, I am getting: Benchmarking: Raw SHA-1 [taviso sse4]... DONE Raw: 27478K c/s real, 27478K c/s virtual Benchmarking: Raw SHA-1 [taviso sse4]... DONE Raw: 28838K c/s real, 28838K c/s virtual (different invocations of the same code). We should be able to improve this further to 30M+ c/s. I am not making use of _mm_cmov_si128() yet. Alexander
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