Date: Thu, 25 Aug 2011 03:07:05 +0400 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: Lukas's Status Report - #15 of 15 Lukas - On Mon, Aug 22, 2011 at 10:02:42PM +0200, Lukas Odzioba wrote: > I've uploaded mscash2cuda-0 to wiki. > On 9800GT - 1430 c/s [128th,14bl] > On GTX460 - 8160 c/s [256th,14bl] Thanks. Here's what I got on 8800 GTS 512: Benchmarking: MSCASH2CUDA [GPU]... DONE Raw: 1580 c/s real, 1580 c/s virtual After applying your john-1.7.8-mscash2cuda-0.diff, I changed: mscash2_init(1); to: mscash2_init(0); or it was failing trying to use a non-existent second GPU as far as I could tell. Do you have two NVidia GPUs in your machine now? :-) Running two instances at once, I got: Raw: 784 c/s real, 819 c/s virtual Raw: 934 c/s real, 961 c/s virtual which is slightly faster (1700 c/s combined). Overall, this feels somewhat slow - comparable to a quad-core CPU. There's probably a lot of room for optimization. Your 8160 c/s for a faster GPU is much better, though. :-) > Patch is configured for older devices (sm=10,128threads) to be more > portable. As Solar stated only pbkdf2 is on gpu side. Yet you implemented the on-CPU mscash portion of mscash2 in the .cu source file - wouldn't it be cleaner/easier to have it in .c? (Maybe this is how it should be. I am merely asking.) > It is basicly Sn3f's implementation with JimF's optimizations, and > it's not (yet) fully optimal. I estimate that optimal should do around > 13k c/s on gtx460. How did you arrive at this estimate? > Now I'am thinking about buying ati card and making opencl patches > optimizations to utilize radeon's computing power. Besides I want to > make md5cuda patch faster. Sounds good. Thanks, Alexander
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