Date: Sun, 12 Aug 2012 02:28:09 +0400 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: Current -fixes GPU formats vs TS Lukas - On Sun, Aug 12, 2012 at 12:05:26AM +0200, Lukas Odzioba wrote: > 2012/8/11 Lukas Odzioba <lukas.odzioba@...il.com>: > > I'll merge those changes and send final patch to magnum. > > I added in my last patch proper get_binary and get_hash functions, > > and removed crack checking from gpu code. So your changes to this code > > won't be included in the final version. > > Here's patch. Moving crack checking to cpu seems to not affect speed. Why do you #include "sha2.h" and how is this going to work in the -fixes branch? The CUDA and OpenCL implementations are now inconsistent in where the comparisons are done. Did you do your speed testing on your cards only or also on bull's? I think there may be a bit more of a difference (maybe 1% or so?) with the faster GPUs. I think you could transfer e.g. 64-bit partial hashes to CPU only, and when these match, do a full recomputation and comparison in cmp_exact() (on CPU). But this is beyond what's acceptable for the -fixes branch now. Also, you're right that polishing this format (beyond making it work, which we did) is not a priority right now. Thanks, Alexander
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