Date: Thu, 05 Jul 2012 11:50:42 -0300 From: Claudio André <claudioandre.br@...il.com> To: john-dev@...ts.openwall.com Subject: Re: common find_best_workgroup() Em 05-07-2012 11:23, magnum escreveu: > I have already committed an experimental fix. Seems to work fine but > still testing (I also changed all formats except Claudio's so they use > the shared function) I can change mine too. I need only two "new" things inside the default find_best stuff. I will comment on one of your commits, just have to check if it makes sense on AMD first. > > I'm starting to think we should drop the whole idea of > find_best_workgroup. I mostly see random results (picking totally > different values at different runs). For most kernels you will be able > to pick a good default. The more critical one is global_work_size, and I > believe that too can have a good default per format. > > magnum We have been getting different results using "find_best" functions. It is something i really enjoy to use (on new hardware AND on experimentation). However, i agree that it is becoming clear it is not really necessary. I mean, the max possible value is always a good choice. Anyway, i would like to see if a bug inside AMD driver for 7970 is fixed and than drop find_best_workgroup . Claudio PS: i never use "find_best_workgroup" on fast hashes.
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