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Scitech colleagues, It is now possible to configure quite simply a teraflop-desktop Apple system, via standard ordering of components listed below. Note that with only the one Radeon card we can achieve 1 teraflop (single-precision floats), so this configuration below is thermally and power-wise safe. The reason we can now get a teraflop in this way is interesting: ---In Os X Lion, the OpenCL environment allows, on say our canonical galaxy-collision demonstration, 800+ gigaflops from the single GPU card, and 200+ gigaflops from the Mac cores themselves. It is OpenCL that allows this symbiosis to be straightforward. But there is more good news: This GPU card and others, e.g. Quadro FX 4800, now have double-precision float support in Max OS Lion, OpenCL 1.1. One can expect roughly 1/4 of the teraflop rate performance when using doubles in this way; however, all such speed estimates depend, as we know, on the particular algorithm and the implementation of same. Respectfully, Richard Crandall Advanced Computation Group ============================================ Teraflop-desktop configuration: 12-core Mac Pro 2.93 GHz, 6 GB RAM, 1 card NVIDIA GT120 for Open GL, 1 card ATI Radeon HD 5870 for OpenCL, 27” Apple Cinema Display, (if high-end visualization is desired) Mac OS X Lion. ============================================ _______________________________________________ Do not post admin requests to the list. They will be ignored. Scitech mailing list (email@hidden) Help/Unsubscribe/Update your Subscription: This email sent to email@hidden
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