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General Purpose Graphics Processing Units (GPGPUs) are rapidly becoming an integral part of high performance system architectures. The Tianhe-1A and Tsubame systems received significant attention for their architectures that leverage GPGPUs. Increasingly many scientific applications that were originally written for CPUs using MPI for parallelism are being ported to these hybrid CPU-GPU clusters. In...
Data parallel architectures, such as General Purpose Graphics Units (GPGPUs) have seen a tremendous rise in their application for High End Computing. However, data movement in and out of GPGPUs remains the biggest hurdle to overall performance and programmer productivity. Real scientific applications utilize multi-dimensional data. Data in higher dimensions may not be contiguous in memory. In order...
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