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Date: Sun, 2 Jun 2013 15:24:52 +0200
From: Lukas Odzioba <>
Subject: Re: OS X Macbook problems trying to use GPU

2013/6/2 Martin Leon <>:
> I have tried both building both macosx-x86-64-opencl and macosx-x86-64-cuda
> The macosx-x86-64-opencl just hangs cold as soon as I try to use an
> '-opencl' format (e.g. --forma=wpapsk-opencl).  The system stops responding
> completely.  I have to power the machine down using the power button.

This happens for all -opencl formats? Also when you run ./john -test
Is there anything interesting in system logs after such restart?

> The macosx-x86-64-cuda build tells me I don't have a CUDA compatible device.

Amd gpu is definitely not a CUDA compatibile device.


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