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Date: Sun, 27 Jan 2013 01:46:16 +0100
From: magnum <john.magnum@...hmail.com>
To: john-dev@...ts.openwall.com
Subject: Re: mscash2 speed (was: Proposed optimizations to pwsafe)

Still, I get <75K real-life figures from latest oclHashCat and >100K from latest JtR. Not sure why. That is on Cat 12.8.

magnum


On 27 Jan, 2013, at 1:33 , Solar Designer <solar@...nwall.com> wrote:

> On Sun, Jan 27, 2013 at 01:08:46AM +0100, Lukas Odzioba wrote:
>> 2013/1/27 magnum <john.magnum@...hmail.com>:
>>> Maybe that is why Atom does not list DCC2 benchmarks...
>> 
>> Earlier he listed them:
>> http://web.archive.org/web/20120103091803/http://hashcat.net/oclhashcat-plus/
> 
> This has speed for DCC2 on 7970 with Catalyst 12.4, and for GTX 570 o/c
> just like ours:
> 
> http://web.archive.org/web/20120606061027/http://hashcat.net/oclhashcat-plus/
> 
> 107.6k c/s and 31604 c/s, respectively.
> 
> JtR's current speeds are:
> 
> $ ./john -te -fo=mscash2-opencl -pla=1
> OpenCL platform 1: AMD Accelerated Parallel Processing, 2 device(s).
> Device 0: Tahiti (AMD Radeon HD 7900 Series)
> Optimal Work Group Size:128
> Kernel Execution Speed (Higher is better):1.556560
> Benchmarking: M$ Cache Hash 2 (DCC2) PBKDF2-HMAC-SHA-1 [OpenCL]... DONE
> Raw:    103232 c/s real, 5079K c/s virtual
> 
> $ ./john -te -fo=mscash2-opencl       
> OpenCL platform 0: NVIDIA CUDA, 1 device(s).
> Device 0: GeForce GTX 570
> Optimal Work Group Size:128
> Kernel Execution Speed (Higher is better):0.475342
> Benchmarking: M$ Cache Hash 2 (DCC2) PBKDF2-HMAC-SHA-1 [OpenCL]... DONE
> Raw:    30340 c/s real, 30567 c/s virtual
> 
> $ ./john -te -fo=mscash2-cuda  
> Benchmarking: M$ Cache Hash 2 (DCC2) PBKDF2-HMAC-SHA-1 [CUDA]... DONE
> Raw:    13714 c/s real, 13644 c/s virtual
> 
> The CUDA build needs compile-time tuning of THREADS and BLOCKS, which I
> did not do here...
> 
> Alexander
> 


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