Date: Thu, 4 Jun 2015 01:30:03 +0300 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: PHC: Parallel in OpenCL Lukas, On Wed, Jun 03, 2015 at 09:59:04PM +0200, Lukas Odzioba wrote: > 2015-06-02 22:03 GMT+02:00 Agnieszka Bielec <bielecagnieszka8@...il.com>: > > [a@...er run]$ ./john --test --format=parallel-opencl --dev=1 --skip-self-test > > Speed for cost 1 (s) of 0, cost 2 (p) of 0 > > Many salts: 28493 c/s real, 3276K c/s virtual > > Only one salt: 28493 c/s real, 3276K c/s virtual > > Ok, at least it is clear now that we have lost 1000 c/s by splitting kernel. > Maybe we could limit code size by using gotos, but it would be a stunt > and I don't recomend it. I am somewhat out of context on your discussion with Agnieszka, so I am puzzled by the comments (initially by her, and now also by you) of code size increases somehow being associated with use of split kernels. Can you explain? Thanks, Alexander
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