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Message-ID: <20120401174616.GA7888@openwall.com>
Date: Sun, 1 Apr 2012 21:46:16 +0400
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: fast hashes on GPU
On Sun, Apr 01, 2012 at 06:21:14PM +0200, magnum wrote:
> On 03/31/2012 02:19 PM, Solar Designer wrote:
> > ...Oh, I just got it to:
> >
> > Many salts: 38062K c/s real, 38062K c/s virtual
> > Only one salt: 26270K c/s real, 26270K c/s virtual
> >
> > by simply adding "#pragma unroll 64" before the last loop in
> > sha512_block().
>
> Did you add just that very pragma line,
Yes. There were similar lines for nearby loops, but somehow not for
that one yet.
> or did you also add something
> like "#pragma OPENCL EXTENSION cl_nv_pragma_unroll : enable" somewhere
> as well?
No. This was CUDA code, not OpenCL.
Alexander
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