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Message-ID: <20130117110741.GA26067@openwall.com>
Date: Thu, 17 Jan 2013 15:07:41 +0400
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: CUDA multigpu first draft for pwsafe
Lukas -
On Wed, Jan 16, 2013 at 10:22:12PM +0100, Lukas Odzioba wrote:
> Thanks to one of john users I got access to GTX 690.
Cool! Can you benchmark other CUDA and OpenCL formats on it as well,
and compare those to the older NVIDIA cards that we have?
> For identical gpus code scales very well:
> before:
> Raw: 96376 c/s real, 97090 c/s virtual
> after:
> Raw: 192752 c/s real, 192752 c/s virtual
The single GPU run here is a bit slower than what we're getting on
bull's o/c GTX 570:
Benchmarking: Password Safe SHA-256 [CUDA]... DONE
Raw: 108881 c/s real, 108196 c/s virtual
Local worksize (LWS) 256, Global worksize (GWS) 57344
Benchmarking: Password Safe SHA-256 [OpenCL]... DONE
Raw: 128143 c/s real, 128862 c/s virtual
and a lot slower than what we're getting on HD 7970:
Local worksize (LWS) 64, Global worksize (GWS) 57344
Benchmarking: Password Safe SHA-256 [OpenCL]... DONE
Raw: 352524 c/s real, 17203K c/s virtual
I am not surprised.
Nice work on multi-GPU, although I guess we'll approach it differently
at a later time.
Thanks,
Alexander
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