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Message-ID: <20120804215842.GA11659@openwall.com>
Date: Sun, 5 Aug 2012 01:58:42 +0400
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: sunmd5
On Sat, Aug 04, 2012 at 11:49:52PM +0200, magnum wrote:
> On 2012-08-04 23:38, Solar Designer wrote:
> > Thanks. Here's an obvious optimization, removing the modulo division.
> >
> > Benchmarking: SunMD5 [128/128 XOP intrinsics 8x x1024]... DONE
> > Raw: 541 c/s real, 541 c/s virtual
> >
> > or even (best of several invocations):
> >
> > Benchmarking: SunMD5 [128/128 XOP intrinsics 8x x1024]... DONE
> > Raw: 544 c/s real, 544 c/s virtual
>
> Committed, thanks. On my laptop it made a more significant boost, almost 4%.
Thanks. I think you misread the above. It's +7.5% here (506 to 544).
I also tried eliminating the sprintf(), but this only hurt performance.
Apparently, it is not called that frequently, whereas my changes affected
register allocation in the inner loop or something. (Not submitting.)
Alexander
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