Date: Thu, 5 Jul 2012 15:56:16 +0800 From: myrice <qqlddg@...il.com> To: john-dev@...ts.openwall.com Subject: Re: About very high memory usage On Thu, Jul 5, 2012 at 1:17 PM, Solar Designer <solar@...nwall.com> wrote: > Single crack mode does when you set min_keys_per_crypt this high, which > was not expected when I designed this mode in almost its current form in > 1998. We have two settings - min_keys_per_crypt and max_keys_per_crypt - > precisely to make single crack mode behave better. The "min" should > in fact be as low as possible while achieving reasonable performance. > It is OK if the performance achieved at that setting is, say, twice > worse than at "max". What would your "min" need to be for that? And if > we allow for 10x worse c/s rate? > I got it. I set my "min" to be this since I want to full use GPU resource(correspond to BLOCK_NUM*THREAD_NUM). I test lower size(32*32), it takes 200MB+ memory. The memory seems reasonable if we allocate every password candidate per salt. But it is a lot slower, only 42K c/s :( Thanks myrice
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