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Date: Wed, 25 Apr 2012 09:49:13 -0300
From: Claudio André <claudioandre.br@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: New RAR OpenCL kernel
By the way, using local memory it failed on GPU but works on CPU.
It is a behavior i saw already. Since it is just weird, i never tried to
understand it.
-----------------------------------
claudio@...udioandre-desktop:~/bin/john/openCL/src$ LWS=64 KPC=2560
../run/john -test -fo:rar
OpenCL platform 0: AMD Accelerated Parallel Processing, 2 device(s).
Using device 0: Juniper
Compilation log: LOOP UNROLL: pragma unroll (line 264)
Unrolled as requested!
Local worksize (LWS) 64, Global worksize (KPC) 2560
Benchmarking: RAR3 (6 characters) [OpenCL]... FAILED (cmp_all(95))
-----------------------------------
claudio@...udioandre-desktop:~/bin/john/openCL/src$ LWS=64 KPC=2560
../run/john -test -fo:rar -de:1
OpenCL platform 0: AMD Accelerated Parallel Processing, 2 device(s).
Using device 1: AMD Phenom(tm) II X6 1075T Processor
Compilation log: LOOP UNROLL: pragma unroll (line 264)
Unrolled as requested!
LOOP UNROLL: pragma unroll (line 264)
Unrolled as requested!
Note: OpenCL device is CPU. A non-OpenCL build may be faster.
Local worksize (LWS) 64, Global worksize (KPC) 2560
Benchmarking: RAR3 (4 characters) [OpenCL]... DONE
Raw: 288 c/s real, 50.8 c/s virtual
Em 25-04-2012 09:38, SAYANTAN DATTA escreveu:
> Hi magnum,
>
> I tested your rar format on my 4890.Here's the result:
>
> OpenCL platform 0: AMD Accelerated Parallel Processing, 2 device(s).
> Using device 0: ATI RV770
> Compilation log: LOOP UNROLL: pragma unroll (line 264)
> Unrolled as requested!
>
> Optimal local work size 256
> (to avoid this test on next run, put "rar_LWS = 256" in john.conf,
> section [Options:OpenCL])
> Optimal keys per crypt 256
> (to avoid this test on next run, put "rar_KPC = 256" in john.conf,
> section [Options:OpenCL])
> Local worksize (LWS) 256, Global worksize (KPC) 256
> Benchmarking: RAR3 (6 characters) [OpenCL]... DONE
> Raw: 64.2 c/s real, 64.2 c/s virtual
>
> Is it okay to have KPC 256? Seems a bit low..
>
> Regards,
> Sayantan
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