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Date: Thu, 04 Aug 2011 19:56:49 +0200
From: groszek <>
Subject: Re: JtR CUDA patch

On 08/04/2011 06:06 AM, Lukas Odzioba wrote:
> Hi all!
> I've prepared patch adding nVidia GPU's support for the following formats:
> phpass, cryptmd5, cryptsha256, cryptsha512
> Performance is rather poor, here's a few benchmarks on my GTX460:
> phpass      292k c/s
> cryptmd5    391k c/s
> cryptsha256 7800 c/s
> cryptsha512 5600 c/s

On my GTS 250m i get:
  Raw:    79973 c/s real, 80105 c/s virtual

  Benchmarking: CRYPTMD5CUDA saltlen=8,passlen=8 [MD5-based CRYPT]. DONE
  Raw:    57714 c/s real, 57829 c/s virtual

  Benchmarking: CRYPTSHA256CUDA [SHA256-based CRYPT]... DONE
  Raw:    823 c/s real, 825 c/s virtual

  Benchmarking: CRYPTSHA512CUDA [SHA512-based CRYPT]... DONE
  Raw:    559 c/s real, 560 c/s virtual

This is very, very slow... and system becomes unresponsible (even mouse
cursor is dead) while its running.
Compiled with:
- Cuda compilation tools, release 4.0, V0.2.1221 (4.0.8)
- gcc x86_64 4.4.5 (cuda still doesn't like 4.5 ... aww!)

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