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Date: Sun, 26 Jul 2015 16:57:15 +0200
From: Albert Veli <>
Subject: Re: OpenCL with AMD FirePro on OS X

Some opencl formats works for me on OS X while others fail. Example:

./john --test --format=md5crypt-opencl
Device 1: ATI Radeon HD 6970M
Benchmarking: md5crypt-opencl, crypt(3) $1$ [MD5 OpenCL]... DONE
Raw:    178734 c/s real, 19660K c/s virtual

./john --test --format=Raw-MD5-opencl
Device 1: ATI Radeon HD 6970M
Benchmarking: Raw-MD5-opencl [MD5 OpenCL]... Build log: <program
source>:257:18: warning: unknown attribute 'max_constant_size' ignored
                __attribute__((max_constant_size (NUM_INT_KEYS * 4)))

FAILED (cmp_all(0))

On Sun, Jul 26, 2015 at 1:35 PM, MPB <> wrote:

> I just tested a secure boot. Even without all additional kexts and drivers
> it doesn't work and still fails. Is something about building the software
> with "./configure" and "make" wrong? The autoconfig itself recognizes full
> OpenCL support.

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