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Direct GPU/FPGA Communication Via PCI Express

Ray Bittner, Erik Ruf, and Alessandro Forin


We describe a mechanism for connecting GPU and FPGA devices directly via the PCI Express bus, enabling the transfer of data between these heterogeneous computing units without the intermediate use of system memory. We evaluate the performance benefits of this approach over a range of transfer sizes, and demonstrate its utility in a computer vision application. We find that bypassing system memory yields improvements as high as 2.2x in data transfer speed, and 1.9x in application performance.


Publication typeArticle
Published inCluster Computing
PublisherSpringer Verlag
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