Date: Sun, 1 Apr 2012 23:54:06 +0800 From: myrice <qqlddg@...il.com> To: john-dev@...ts.openwall.com Subject: Re: CUDA vs. OpenCL; approach to fast hashes (was: rawsha256.cu patch(using shared memory)) On Sun, Apr 1, 2012 at 5:38 PM, Solar Designer <solar@...nwall.com> wrote: > > > Do you expect to have access to faster cards during the summer? Do you > intend to write any OpenCL code or only CUDA? Efficient OpenCL code is > more desirable than CUDA code because AMD cards are simply about 3 times > faster than Nvidia at these tasks. This is going to be partially > corrected with GTX 680, but I expect a difference of about 1.5x in favor > of AMD to remain (for optimized code). And that's per-chip. Now if we > consider that there are fast dual-GPU AMD cards on the market (6990, > 5970), but no dual-GPU counterpart to GTX 680 available yet, that gives > AMD even further advantage this year (more GPUs per machine). Perhaps a > new dual-GPU card from Nvidia will appear soon, though. > > Yes, I will change my laptop this summer. Before June, I think I will also use GTX580. However, I still expect there is other way to get a faster card. CUDA and OpenCL both okay for me though I usually programming under CUDA. I have experience with OpenCL under NVidia card. So I don't know if they have big difference. I think I will handle it. :) Thanks! Dongdong Li Content of type "text/html" skipped
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