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• W2891832717 abstract "Sparse Matrix-Vector Multiplication (SpMV) is an essential computation kernel for many data-analytic workloads running in both supercomputers and data centers. The intrinsic irregularity in SpMV is challenging to achieve high performance, especially when porting to new architectures. In this paper, we present our work on designing and implementing efficient SpMV algorithms on Sunway, a novel architecture with many unique features. To fully exploit the Sunway architecture, we have designed a dual-side multi-level partition mechanism on both sparse matrices and hardware resources to improve locality and parallelism. On one hand, we partition sparse matrices into blocks, tiles, and slices for different granularities. On the other hand, we partition cores in a Sunway processor into fleets, and further dedicate part of cores in a fleet as computation and I/O cores. Moreover, we have optimized the communication between partitions to further improve the performance. Our scheme is generally applicable to different SpMV formats and implementations. For evaluation, we have applied our techniques atop a popular SpMV format, CSR. Experimental results on 18 datasets show that our optimization yields up to 15.5x (12.3x on average) speedups." @default.
• W2891832717 created "2018-09-27" @default.
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• W2891832717 date "2018-06-12" @default.
• W2891832717 modified "2023-10-16" @default.
• W2891832717 title "Towards Efficient SpMV on Sunway Manycore Architectures" @default.
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• W2891832717 doi "https://doi.org/10.1145/3205289.3205313" @default.
• W2891832717 hasPublicationYear "2018" @default.
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