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Date: Sun, 17 Jun 2012 19:31:55 +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.
BTW, I've just checked that -mxop implies SSE4.1, so the above should
have used the SSE4.1 trick in Tavis' code.
$ gcc -mxop -dM -E - < /dev/null | fgrep SSE4
#define __SSE4_1__ 1
#define __SSE4_2__ 1
#define __SSE4A__ 1
Alexander
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