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- W9649600 abstract "This paper describes and evaluates a compiler transformation that improves the performance of parallel programs on Network-of-Workstation (NOW) sharedmemory multiprocessors. The transformation overlaps the communication time resulting form non-local memory accesses with the computation time in parallel loops to effectively hide the latency of the remote accesses. The transformation peels from a parallel loop iterations that access remote data and re-schedules them after the execution of iterations that access only local data (localonly iterations). Asynchronous prefetching of remote data is used to overlap non-local access latency with the execution of local-only iterations. Experimental evaluation of the transformation on a NOW multiprocessor indicates that it is generally effective in improving parallel execution time (up to 1.9 times). The extent of the benefit is determined by three factors: the size of localonly computations, the significance of remote memory access latency, and the position of the iterations that access remote data in a parallel loop." @default.
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- W9649600 date "2001-01-01" @default.
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- W9649600 title "Computation-Communication Overlap on Network-of-Workstation Multiprocessors" @default.
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