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Date: Sun, 13 Oct 2019 18:28:11 +0200
From: Solar Designer <>
Cc: Claudio Andre <>
Subject: Re: GPUs not working

On Mon, Oct 07, 2019 at 09:11:39PM +0000, Jacoby Veach wrote:
> I'm trying to get OpenCL to work with JTR, but it's not. When I run "-list=opencl=devices" it shows all 3 graphics cards.
> When I run "-test -format=ZIP-opencl" it ends with this error:

Can you also try other OpenCL formats?

> 1 catastrophic error detected in the compilation of ".\".
> Compilation terminated.
> Frontend phase failed compilation.
> Error building kernel /run/kernels/ DEVICE_INFO=138
> 0: OpenCL CL_BUILD_PROGRAM_FAILURE (-11) error in opencl_common.c:1386 - clBuildProgram

This looks like a full pathname resolution problem, maybe related to
what's described in recent comments to:

You might want to try running "john" while you're in a different
directory - e.g., "./john" when you're in "run" or "../john" when you're
in "run/kernels".

> Other information:
> Windows 7 x64 bit
> Video cards are: AMD Radeon HD 7700 with updated drivers
> This rig works with Hascat with no issues, but Hashcat has a problem with Zip2 hashes so it's JTR or bust for me.
> I have worked through this thread: as best i can, but still couldn't get JTR to use the GPU


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