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Date: Thu, 20 Dec 2012 17:38:06 -0200
From: Claudio André <claudioandre.br@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: Varous experimental OpenCL commits

Em 19-12-2012 23:03, magnum escreveu:
> Claudio, Sayantan, all
>
> I have committed a couple patches that are somewhat experimental:
>
>
> 1. A patch that adds an "opencl_process_event()" function in common-opencl.c,
Committed (sha256crypt and sha512crypt).


> 3. Modifications to all my OpenCL formats so they actually use the 'count' argument passed to crypt_all() to decrease global worksize when possible. This has several good consequences: It makes Single mode work less bad (min_keys_per_crypt can be set to local worksize) and it speeds up self-test - often a lot! For example, Office 2007 benchmark took 1:45 before this patch, and just 25 seconds now.
Committed.

> ...then replace all uses of global_work_size within the function to crypt_gws. Simple as that! Don't forget to set self->params.min_keys_per_crypt to local_work_size in init(). Actually, I set it to MAX(local_work_size, 8) because some CPU drivers will use a local_work_size of 1 and we don't want it that low.
On AMD LWS=1 is a nice choice for slow hashes. I will try this again and 
(re)check.


----

Everything seems fine. These improvements seem a to be a must have in 
all formats!

Claudio

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