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Date: Fri, 27 Mar 2015 08:17:45 +0100
From: magnum <>
Subject: Re: self test failed with OpenCL on a GPU

On 2015-03-26 21:26, Benji Wiebe wrote:
> When I use john with '--format=sha512crypt-opencl', it says "Self test
> failed (get_hash[0](0))". If I specify '--devices=cpu', it works, but it
> does not work if I specify GPU or if I leave off the '--devices'.
> Is this a problem in my setup? Or is it a bug?

Is this with 1.8.0-Jumbo-1? What version of Catalyst driver are you
using? You can show it with "./john --list=opencl-devices --device=gpu".
Currently I recommend using Catalyst 14.9 although I'm not aware of any
specific problems with newer versions. I do know that oclHashcat authors
say the newer versions are unusable.


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