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Date: Mon, 10 Mar 2014 08:03:13 +0100
From: magnum <john.magnum@...hmail.com>
To: john-users@...ts.openwall.com
Subject: Re: Reward for saving my 15 years of photos
> On Mar 9, 2014, at 2:51 PM, kzug <kzug10@...il.com> wrote:
>
>> Hello All,
>> Is anyone interested on sharing the workload?
>>
>> As there is not yet a GPU assisted mode on JTR for DMG's , I fear that we might contribute to global warming for a long while…
On 2014-03-10 05:53, Jeff Keller wrote:
> I think there *is* now a GPU-enabled version… magnum?
There sure is. But you need to use a bleeding-jumbo snapshot.
Unfortunately the GPU format lacks auto-tuning. It also doesn't use a
split kernel yet (someone could fix this, looking at encfs-opencl or
krb5pa-sha1-opencl - the kernel itself already exist) so it's awfully
unresponsive.
For weak GPUs, you may need to use a GWS as low as 512 (or system might
reboot or freeze for a long time). Simplest way is to "export GWS=512"
before starting job. Other way is to add "dmg_GWS = 512" in john.conf
under the [Options:OpenCL] section.
Flagship GPUs like HD7970 may use the default GWS of 9K but it will be
pretty unresponsive.
magnum
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