Date: Fri, 31 Oct 2014 17:26:14 +0530 From: Sayantan Datta <std2048@...il.com> To: john-dev <john-dev@...ts.openwall.com> Subject: Re: descrypt speed On Fri, Oct 31, 2014 at 11:03 AM, magnum <john.magnum@...hmail.com> wrote: > Your numbers are not particularly bad afaik. I'm concerned about "fork" > being beneficial at all, for anyone. For a semi-slow format like this I > think a 50% speedup from using fork means we should be able to improve > something. The bottleneck with descrypt-opencl are two fold. First is the candidate generation. Second is hiding latency of transferring candidates to GPU and back. The second bottleneck can be scrutinized by looking at the GPU usage percentage. Regards, Sayantan Content of type "text/html" skipped
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