Date: Thu, 12 Apr 2012 12:29:40 +0530 From: SAYANTAN DATTA <std2048@...il.com> To: john-dev@...ts.openwall.com Subject: Re: MSCash2 OpenCL (was: OpenCL tests on HD 7970) Hi I think this means that we're already quite close to optimal > performance, and further optimizations may be in two areas: reducing the > number of operations performed per password hashed (e.g., by making use > of bitselect() and rotate(), not re-computing common subexpressions, etc.) > and avoiding various stalls (apparently, the possible benefit here is > limited to 15% now). > Reducing the ALU ops doesn't seem to have much impact on performance. I think the implementation more bottlenecked by the memory access. Despite I'm not going to ignore anything. Regards, Sayantan. Content of type "text/html" skipped
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