Efficient alltoall_inplace communication algorithms with limited buffer space

Yanfei Fang; Yanbing Li; Enming Dong; Fengbin Qi; Wangquan He; Yunfei Wang; Zhengmao Xu

doi:10.1117/12.2672150

21 March 2023 Efficient alltoall_inplace communication algorithms with limited buffer space

Yanfei Fang, Yanbing Li, Enming Dong, Fengbin Qi, Wangquan He, Yunfei Wang, Zhengmao Xu

Proceedings Volume 12609, International Conference on Computer Application and Information Security (ICCAIS 2022); 126090Y (2023) https://doi.org/10.1117/12.2672150
Event: International Conference on Computer Application and Information Security (ICCAIS 2022), 2022, ONLINE, ONLINE

Abstract

Alltoall is an important collective communication mode that is widely used in scientific and engineering computing applications. In applications such as FFT, using as much memory space as possible can improve applications’ efficiency and expand the scale of problems to be solved. High-bandwidth alltoall_inplace communication under space-constrained buffer conditions can significantly improve the performance of such applications. In this paper, two alltoall_inpalce communication algorithms under the condition of limited buffer space are designed for the domestic parallel computing system based on Sunway many-core processor. The alltoall_inpalce communication interfaces for both the core array and the whole CPU node are realized. The experimental results show that algorithms implemented in this paper can achieve high bandwidth using limited buffer space.

Citation Download Citation

Yanfei Fang, Yanbing Li, Enming Dong, Fengbin Qi, Wangquan He, Yunfei Wang, and Zhengmao Xu "Efficient alltoall_inplace communication algorithms with limited buffer space", Proc. SPIE 12609, International Conference on Computer Application and Information Security (ICCAIS 2022), 126090Y (21 March 2023); https://doi.org/10.1117/12.2672150

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