Date: Tue, 26 Jun 2012 10:17:47 -0300 From: Claudio André <claudioandre.br@...il.com> To: john-dev@...ts.openwall.com Subject: Re: OpenCL kernel max running time vs. "ASIC hang" Em 25-06-2012 22:06, Bit Weasil escreveu: > > AMD doesn't document anything interesting, nor do they bother > responding to bugs. atom of hashcat, gat3way of hashkill, and myself > have all spent long hours arguing with their OpenCL implementation vs > the spec. For a long while, they were somewhere between glitchy and > flat out wrong, and they do not seem to care. So work around it in > any way you wish. :) I just assume that bugs in their drivers may be > fixed at some point, and then will probably be unfixed in a later > version. They're really bad with them. > > My solution is short kernel runtimes. If you find anything better, > let me know! Hi, seems everybody has this "special fellings" on AMD software. I did experiments using "some" (2, 3, 5, ... invocations). And i really liked the results: better performance AND better interactivity, but i found my solution just silly. And i disliked my idea to improve find_best_workgroup() and find_best_KPC() JtR functions. I will try your approach to handle it in a proper way. Thanks for sharing!
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