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Date: Tue, 12 Apr 2011 03:24:24 +0200
From: Ɓukasz Odzioba <>
Subject: Re: sha256 format patches

>Right, but your current code will likely bump into another bottleneck
>first.  I think it already does on my system.
You might be right.

>> Slow sha256 calculates 380 c/s - 35kB/s PCI-e transfer

>I think you wrongly substituted the on-CPU speed here (not GPU), but
>that didn't affect your conclusion.
That's my mistke it should be around 2500 c/s as on the bottom of my post.

I also was wrong about 64bit integers in cuda (nv is not boasting of
it). According to this document
- page 64, this should't be a problem.
Bitslice implementation looks very interesting. I'll do further research on it.

oclHashcat results are impressive.
Thanks for *1mod.diff !

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