Date: Tue, 7 Aug 2012 23:46:02 +0800 From: myrice <qqlddg@...il.com> To: john-dev@...ts.openwall.com Subject: Re: Result of hard core password generation on 7970 Solar On Mon, Aug 6, 2012 at 3:46 PM, myrice <qqlddg@...il.com> wrote: > Solar > > On Fri, Aug 3, 2012 at 12:42 AM, Solar Designer <solar@...nwall.com> wrote: >> Are you using the bitmap even with just 1 hash loaded? In the real >> implementation, I guess you'll need to do direct comparisons when the >> number of loaded hashes (for the current salt if applicable) is below a >> threshold (like just 1 or 2). > > Here is the result of using local memory for hashes < 2048 and direct > compare using register for hashes is 1 or 2: > I set global work size to 2048*8 with all test cases: > > raw-md5-opencl with PG (Local memory) > > 1 > guesses: 0 time: 0:00:01:28 0.00% c/s: 826315K > > 1000 > guesses: 0 time: 0:00:01:45 0.00% c/s: 828407M > > 1000000 > guesses: 0 time: 0:00:00:52 0.00% c/s: 437215G > > The code is here: > https://github.com/qqldd/myrice-JtR/blob/PG-test > > The file I changed: > https://github.com/qqldd/myrice-JtR/blob/PG-test/src/opencl_rawmd5_fmt.c > https://github.com/qqldd/myrice-JtR/blob/PG-test/src/opencl/md5_kernel.cl Previous, in my code, the password generation have unnecessary read global keys every iteration. I move these code out of two for iterations. Also, I change global work size to 2048*32 which contributes to better performance. Here is the result: 1 guesses: 0 time: 0:00:01:26 0.00% c/s: 1956M 1000 guesses: 0 time: 0:00:01:27 0.00% c/s: 1807G = 1807M 1M guesses: 0 time: 0:00:01:25 0.00% c/s: 922618G = 922.6M Thanks myrice
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