Date: Fri, 13 Apr 2012 16:16:45 +0530 From: SAYANTAN DATTA <std2048@...il.com> To: john-dev@...ts.openwall.com Subject: Re: OpenCL tests on GTX 570 On Fri, Apr 13, 2012 at 3:39 PM, Solar Designer <solar@...nwall.com> wrote: > I think not intentionally, but it is common for OpenCL implementations > to be slower than CUDA implementations of the same things. > May or may not, because I just read at one of hascat's wiki page that a well optimized ocl code for nv gpus runs 15% slower than the cuda implementation. http://hashcat.net/wiki/oclhashcat_catalyst_forceware Yes, or at least some tuning will be needed to get this to run faster. > > With Lukas' CUDA code, I actually get similar speed to the above without > tuning, but it increases to 29k c/s with very minor tuning (THREADS and > BLOCKS settings, target architecture setting for the compiler). > No doubt it would require some nv specific optimizations but in my last performance update I have made some optimizations that are common to both nv and AMD. Hope it runs well on both architecture. Sayantan Content of type "text/html" skipped
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