Parallel Memory-Independent Communication Bounds for SYRK
Parallel Memory-Independent Communication Bounds for SYRK
复制标题
SYRK 的并行内存独立通信范围
DOI:
10.1145/3558481.3591072
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Rouse, Kathryn
中科院分区:
文献类型:
--
作者:
Al Daas, Hussam;Ballard, Grey;Grigori, Laura;Kumar, Suraj;Rouse, Kathryn
In this paper, we focus on the parallel communication cost of multiplying a matrix with its transpose, known as a symmetric rank-k update (SYRK). SYRK requires half the computation of general matrix multiplication because of the symmetry of the output matrix. Recent work (Beaumont et al., SPAA '22) has demonstrated that the sequential I/O complexity of SYRK is also a constant factor smaller than that of general matrix multiplication. Inspired by this progress, we establish memory-independent parallel communication lower bounds for SYRK with smaller constants than general matrix multiplication, and we show that these constants are tight by presenting communication-optimal algorithms. The crux of the lower bound proof relies on extending a key geometric inequality to symmetric computations and analytically solving a constrained nonlinear optimization problem. The optimal algorithms use a triangular blocking scheme for parallel distribution of the symmetric output matrix and corresponding computation.
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DOI:
10.1145/3362694
发表时间:
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期刊:
ACM Transactions on Mathematical Software (TOMS)
影响因子:
--
作者:
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DOI:
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发表时间:
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期刊:
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影响因子:
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作者:
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发表时间:
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期刊:
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影响因子:
--
作者:
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通讯作者:
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DOI:
10.1145/2312005.2312021
发表时间:
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期刊:
ArXiv
影响因子:
--
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通讯作者:
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DOI:
10.48550/arxiv.2205.13407
发表时间:
2022
期刊:
ArXiv
影响因子:
--
作者:
Hussam Al Daas;Grey Ballard;L. Grigori;Suraj Kumar;Kathryn Rouse
通讯作者:
Kathryn Rouse