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Date: Wed, 13 Jun 2012 13:04:19 +0200
From: Samuele Giovanni Tonon <>
Subject: Re: OS_TIMER and AMD SDK

On 06/13/2012 06:42 AM, Dhiru Kholia wrote:
> On Wed, Jun 13, 2012 at 1:00 AM, magnum <> wrote:
>> When using latest Ubuntu 12 with the distributions' AMD drivers, we get
>> neither AMDAPPSDKROOT nor ATISTREAMSDKROOT from the environment so OS_TIMER
>> does not get set to 0, and indeed we get the semaphore_wait problems.
>> I have no idea how to fix this other than having all OpenCL builds set
>> OS_TIMER=0.
> For Ubuntu 12.x users, we can document that they need to set
> AMDAPPSDKROOT or ATISTREAMSDKROOT variable correctly before attempting
> to compile and run JtR. This should solve the problem.

isn't that already specified in README.opencl ?


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