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We propose a new set of OS abstractions to support GPUs and other accelerator devices as first class computing resources. These new abstractions, collectively called the PTask API, support a dataflow programming model. Because a PTask graph consists of OS-managed objects, the kernel has sufficient visibility and control to provide system-wide guarantees like fairness and performance isolation, and can streamline data movement in ways that are impossible under current GPU programming models. Our
doi:10.1145/2043556.2043579
dblp:conf/sosp/RossbachCSRW11
fatcat:5cgrgj5h5ff6xapt6h7bebqikq