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Date: Sun, 27 Jan 2013 04:33:42 +0400
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: mscash2 speed (was: Proposed optimizations to pwsafe)

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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