Date: Wed, 25 Apr 2012 22:30:11 +0200 From: magnum <john.magnum@...hmail.com> To: john-dev@...ts.openwall.com Subject: Re: New RAR OpenCL kernel On 04/25/2012 10:26 PM, magnum wrote: > On 04/25/2012 02:38 PM, SAYANTAN DATTA wrote: >> I tested your rar format on my 4890.Here's the result: >> >> Local worksize (LWS) 256, Global worksize (KPC) 256 >> Benchmarking: RAR3 (6 characters) [OpenCL]... DONE >> Raw: 64.2 c/s real, 64.2 c/s virtual >> >> Is it okay to have KPC 256? Seems a bit low.. > > I forgot that last question. No, I do not think 256 is too low. I can > get max speed on GTX580 using any LWS >= 64. Sorry I misread this. LWS 256 is OK but KPC at the same can't be good. I wonder how it ended up like that. Try explicitly saying KPC=0 for a benchmark output. Maybe also try setting a lower LWS (and KPC=0) and see what happens. magnum
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