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Date: Fri, 26 Apr 2013 18:00:50 +0200
From: Dániel Bali <>
Subject: Re: GPU support under Windows


 we're/I'm curious about performance of opencl formats on that
> build. Could you do a comparison between speeds achieved on
> linux-x86-64-opencl on Linux and your cygwin build?
> Those with "-opencl" suffix in name should be enough.

My GPU is an AMD Radeon HD 7670M. And when I'm running a raw-md5-opencl
format I get around 22.7K c/s.
The GPU on bull@...nwall is afaik an AMD Radeon HD 7970. It does around 32K
Both of these values are slowly but steadily increasing. Why is this?
If this c/s value is a correct measure of performance then I would say the
windows build doesn't perform too bad.

> It would be nice to make sure that all opencl formats works as they
> should. You can play a bit with our "Test Suite" aka "TS". You should
> be able to find how to use it in john-dev mailing list history.
> Lukas

 I'll do this and report back when I have something.


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