Topology-custom UGAL routing on dragonfly

Topology-custom UGAL routing on dragonfly
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Dragonfly 上的拓扑自定义 UGAL 路由

DOI:
10.1145/3295500.3356208
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发表时间:
2019
期刊:
Storage and Analysis
影响因子:
--
通讯作者:
Lang, Michael
Lang, Michael
中科院分区:
--
文献类型:
--
作者:
Rahman, Md Shafayat;Bhowmik, Saptarshi;Ryasnianskiy, Yevgeniy;Yuan, Xin;Lang, Michael

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蜻蜓网络已经部署在当前一代超级计算机中,并将用于下一代超级计算机。通用全局自适应负载平衡路由(UGAL)是蜻蜓最先进的路由方案。在这项工作中,我们表明,通过为每个拓扑定制UGAL中使用的路径,传统UGAL的性能可以在许多实际的蜻蜓网络上进一步提高,特别是在具有少量组的蜻蜓网络上。我们开发了一种方案来计算每个拓扑的自定义路径集,并比较了我们的拓扑自定义UGAL路由(T-UGAL)与传统UGAL的性能。我们对不同UGAL变体和不同拓扑的评估表明,通过自定义路由,T-UGAL在许多实际的蜻蜓网络上提供了UGAL的显著改进,无论是网络在低负载下的延迟,还是网络在高负载下的吞吐量。
The Dragonfly network has been deployed in the current generation supercomputers and will be used in the next generation supercomputers. The Universal Globally Adaptive Load-balance routing (UGAL) is the state-of-the-art routing scheme for Dragonfly. In this work, we show that the performance of the conventional UGAL can be further improved on many practical Dragonfly networks, especially the ones with a small number of groups, by customizing the paths used in UGAL for each topology. We develop a scheme to compute the custom sets of paths for each topology and compare the performance of our topology-custom UGAL routing (T-UGAL) with conventional UGAL. Our evaluation with different UGAL variations and different topologies demonstrates that by customizing the routes, T-UGAL offers significant improvements over UGAL on many practical Dragonfly networks in terms of both latency when the network is under low load and throughput when the network is under high load.
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