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Date: Thu, 22 Sep 2011 19:42:19 -0400
From: Erik Winkler <>
Subject: Re: OpenCL performance numbers on Radeon HD 5870


To compile your code on MacOS 10.7, I needed to make the following changes:

1) Add the following code anywhere #include <CL/cl.h> exists:

#ifdef __APPLE__
#include <OpenCL/opencl.h>
#include <CL/cl.h>

2) Add the following new build target to the Makefile:

	$(LN) x86-64.h arch.h
	$(MAKE) $(PROJ) \
		JOHN_OBJS="$(JOHN_OBJS) x86-64.o" \
		CFLAGS="$(CFLAGS) -m64" \
		LDFLAGS="$(LDFLAGS) -m64 -framework OpenCL"

Feel free to add these changes to your patch.


On Sep 22, 2011, at 12:02 PM, Lukas Odzioba wrote:

> I uploaded newest version fixing some bugs and faster phpass.
> On phpass@...0 I've got ~300k c/s what is still slow comparing to
> gtx460 with ~245k c/s.
> I had a problem with this revision. Sha256crypt halts my computer
> during .cl compilation. I would apreciate if someone could confirm it.
> It happens only on AMD devices, not on nVidia's.
> Direct link to patch:
> Lukas

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