Date: Mon, 16 Jul 2012 18:23:36 +0800 From: myrice <qqlddg@...il.com> To: john-dev@...ts.openwall.com Subject: Re: xsha512-cuda & xsha512-opencl testing On Mon, Jul 16, 2012 at 5:40 PM, Solar Designer <solar@...nwall.com> wrote: > myrice - > >> 10K_1 >> guesses: 0 time: 0:00:04:00 0.00% c/s: 122552M > > 12M passwords/second, probably limited by transfers of hashes from GPU > to CPU, right? > I guess so. >> 1M_1 >> guesses: 0 time: 0:00:03:58 0.00% c/s: 2788G > > 2.7M passwords/second, probably limited by large hash table lookups on > the host. Is this magnum-jumbo (without bitmaps) or bleeding (with > bitmaps)? I'd expect better speed with bitmaps. Either way, you need > to implement an equivalent of them on the GPU side. Not necessarily for > this hash type (where having so many hashes/salt is not typical), but > for saltless hashes mostly (where having millions of hashes and no salts > is common). > I believe I used bleeding-jumbo from now(or I will have my loaded hash code :( ) BTW, what is exactly bitmaps you said for my format? Can you give me more details? I think bitmaps are compressed hash table. How does JtR lookups the hash table? Thanks myrice
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