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CUDA by Example: An Introduction to General-Purpose GPU Programming by Edward Kandrot, Jason Sanders

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Chapter 11 CUDA C on Multiple GPUs

There is an old saying that goes something like this: “The only thing better than computing on a GPU is computing on two GPUs.” Systems containing multiple graphics processors have become more and more common in recent years. Of course, in some ways multi-GPU systems are similar to multi-CPU systems in that they are still far from the common system configuration, but it has gotten quite easy to end up with more than one GPU in your system. Products such as the GeForce GTX 295 contain two GPUs on a single card. NVIDIA’s Tesla S1070 contains a whopping four CUDA-capable graphics processors in it. Systems built around a recent NVIDIA chipset will have an integrated, CUDA-capable GPU on the motherboard. Adding ...

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