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Issue title: Exploring Languages for Expressing Medium to Massive On-Chip Parallelism
Article type: Research Article
Authors: Zheng, Yili
Affiliations: Lawrence Berkeley National Laboratory, Berkeley, CA, USA. E-mail: [email protected]
Abstract: The Partitioned Global Address Space (PGAS) model of Unified Parallel C (UPC) can help users express and manage application data locality on non-uniform memory access (NUMA) multi-core shared-memory systems to get good performance. First, we describe several UPC program optimization techniques that are important to achieving good performance on NUMA multi-core computers with examples and quantitative performance results. Second, we use two numerical computing kernels, parallel matrix–matrix multiplication and parallel 3-D FFT, to demonstrate the end-to-end development and optimization for UPC applications. Our results show that the optimized UPC programs achieve very good and scalable performance on current multi-core systems and can even outperform vendor-optimized libraries in some cases.
Keywords: UPC, PGAS
DOI: 10.3233/SPR-2010-0310
Journal: Scientific Programming, vol. 18, no. 3-4, pp. 183-191, 2010
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