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Message-ID: <CA+TsHUCiT=qbhMEFbzAqSQ_m80u0b2w=J8yAcvhpxY_Qrq=fYA@mail.gmail.com>
Date: Thu, 12 Apr 2012 12:29:40 +0530
From: SAYANTAN DATTA <std2048@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: MSCash2 OpenCL (was: OpenCL tests on HD 7970)
Hi
I think this means that we're already quite close to optimal
> performance, and further optimizations may be in two areas: reducing the
> number of operations performed per password hashed (e.g., by making use
> of bitselect() and rotate(), not re-computing common subexpressions, etc.)
> and avoiding various stalls (apparently, the possible benefit here is
> limited to 15% now).
>
Reducing the ALU ops doesn't seem to have much impact on performance. I
think the implementation more bottlenecked by the memory access. Despite
I'm not going to ignore anything.
Regards,
Sayantan.
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