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Date: Wed, 8 Aug 2012 09:01:24 +0400
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: Result of hard core password generation on 7970

On Tue, Aug 07, 2012 at 11:40:47PM +0200, Samuele Giovanni Tonon wrote:
> hoping it can help, this are some results on 10 minutes run on the
> 6970 on the last code i found on your pg-test branch

Thanks!

Somehow your speeds for 1 and 1000 hashes are almost 4 times lower than
what we're seeing on 7970, although your GPU should be only about 30%
slower.  Perhaps it's because of this:

> Compilation log:
> Warning: md5 kernel has register spilling. Lower performance is expected.

Your speeds for 1M hashes are closer to 7970's.  They're dominated by
global memory latency.

Alexander

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