Optimizing data query performance of Bi-cluster for large-scale scientific data in supercomputers

Liao, Xia; Shen, Yixian; Li, Shengguo; Lu, Yutong; Du, Yufei; Chen, Zhiguang

doi:10.1007/s11227-021-03965-4

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“…Large-scale supercomputers are essential for tackling complex scientific and industrial challenges [1,2]. To meet the growing demand for computing power, exascale systems are being developed, incorporating an increasing number of interconnected processors [3].…”

Section: Introductionmentioning

confidence: 99%

All-to-All Broadcast Algorithm in Galaxyfly Networks

Zhuang

Chang

et al. 2023

Mathematics

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The design of interconnection networks is a fundamental aspect of high-performance computing (HPC) systems. Among the available topologies, the Galaxyfly network stands out as a low-diameter and flexible-radix network for HPC applications. Given the paramount importance of collective communication in HPC performance, in this paper, we present two different all-to-all broadcast algorithms for the Galaxyfly network, which adhere to the supernode-first rule and the router-first rule, respectively. Our performance evaluation validates their effectiveness and shows that the first algorithm has a higher degree of utilization of network channels, and that the second algorithm can significantly reduce the average time for routers to collect packets from the supernode.

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Section: Introductionmentioning

confidence: 99%