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Message-ID: <d99fdeff4b23dc732be14c5791f99304@smtp.hushmail.com>
Date: Tue, 9 Jul 2013 11:04:49 +0200
From: magnum <john.magnum@...hmail.com>
To: john-dev@...ts.openwall.com
Subject: Re: mscash2 multi-device -test=0 (was: bug: GPU use in CPU-only formats)
On 8 Jul, 2013, at 17:36 , Sayantan Datta <std2048@...il.com> wrote:
> On Friday 05 July 2013 05:23 AM, magnum wrote:
>> I think that "decreasing order" requirement should be taken care of by the format, not the user. When using --device=gpu you select all GPU devices available but on Bull they happen to come in increasing order of performance.
>
> Fixed both of the issues in bleeding.
This now works fine on my laptop too, using -t. For some reason -t=0 doesn't work unless given a specific order:
$ ../run/john -t -form:mscash2-opencl -dev=all
Device 0: Intel(R) Core(TM) i7-3615QM CPU @ 2.30GHz
Optimal Work Group Size:1
Kernel Execution Speed (Higher is better):0.001003
Optimal Global Work Size:8192
Device 1: GeForce GT 650M
Optimal Work Group Size:512
Kernel Execution Speed (Higher is better):0.077778
Optimal Global Work Size:16384
Benchmarking: mscash2-opencl, M$ Cache Hash 2 (DCC2) [PBKDF2-SHA1 OpenCL]... DONE
Raw: 5056 c/s real, 2371 c/s virtual
$ ../run/john -t=0 -form:mscash2-opencl -dev=1,0
Warning: doing quick benchmarking - the performance numbers will be inaccurate
Device 1: GeForce GT 650M
Device 0: Intel(R) Core(TM) i7-3615QM CPU @ 2.30GHz
Benchmarking: mscash2-opencl, M$ Cache Hash 2 (DCC2) [PBKDF2-SHA1 OpenCL]... DONE
Raw: 4934 c/s real, 819200 c/s virtual
$ ../run/john -t=0 -form:mscash2-opencl -dev=0,1
Warning: doing quick benchmarking - the performance numbers will be inaccurate
Device 0: Intel(R) Core(TM) i7-3615QM CPU @ 2.30GHz
Device 1: GeForce GT 650M
Benchmarking: mscash2-opencl, M$ Cache Hash 2 (DCC2) [PBKDF2-SHA1 OpenCL]... OpenCL error (CL_INVALID_WORK_GROUP_SIZE) in file (common_opencl_pbkdf2.c) at line (411) - (Enque Kernel Failed)
I'll look into it and see what happens. It might be caused by my CPU device only supporting LWS=1 (which is a stupid Apple bug IMO).
magnum
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