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• W4316252394 abstract "Generalized Sparse Matrix-Matrix Multiplication (SpGEMM) is a critical kernel in domains like graph analytic and scientific computation. As a kind of classical special-purpose architecture, systolic arrays were first used for complex computing problems, e.g., matrix multiplication. However, classical systolic arrays are not efficient enough when handling sparse matrices due to the fact that the PEs containing zero-valued entries perform unnecessary operations that do not contribute to the result. Accordingly, in this paper, we propose Mentha, a framework that enables systolic arrays to accelerate sparse matrix computation by employing a sparse-packing algorithm suitable for various dataflow of systolic array. Firstly, Mentha supports both online and offline methods. By packing the rows or columns of the sparse matrix, the zero-valued items in the matrix are significantly reduced and the density of the matrix is improved. In addition, acceleration benefits can be obtained by the adaptation scheme even with limited resources. Moreover, we reconfigure PEs in systolic arrays at a low cost (1.28x in area, 1.21x in power) and find that our method outperforms TPU-like systolic arrays by 1.2~3.3x in terms of SpMM and 1.3~4.4x in terms of SpGEMM when dealing with moderately sparse matrices (sparsity < 0.9), while its performance is at least 9.7x better than cuSPARSE. Furthermore, experimental results show a FLOPs reduction of roughly 3.4x in the neural network." @default.
• W4316252394 created "2023-01-15" @default.
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• W4316252394 date "2022-08-29" @default.
• W4316252394 modified "2023-10-17" @default.
• W4316252394 title "Mentha: Enabling Sparse-Packing Computation on Systolic Arrays" @default.
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• W4316252394 doi "https://doi.org/10.1145/3545008.3545053" @default.
• W4316252394 hasPublicationYear "2022" @default.
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