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Swap-And-Randomize: A Method for Building Low-Latency HPC Interconnects

机译:交换和随机化:一种构建低延迟HPC互连的方法

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摘要

Random network topologies have been proposed to create low-diameter, low-latency interconnection networks in large-scale computing systems. However, these topologies are difficult to deploy in practice, especially when re-designing existing systems, because they lead to increased total cable length and cable packaging complexity. In this work we propose a new method for creating random topologies without increasing cable length: randomly swap link endpoints in a non-random topology that is already deployed across several cabinets in a machine room. We quantitatively evaluate topologies created in this manner using both graph analysis and cycle-accurate network simulation, including comparisons with non-random topologies and previously-proposed random topologies.
机译:已经提出了随机网络拓扑,以在大规模计算系统中创建低直径,低延迟的互连网络。但是,这些拓扑在实践中很难部署,尤其是在重新设计现有系统时,因为它们会导致总电缆长度增加和电缆包装复杂性增加。在这项工作中,我们提出了一种在不增加电缆长度的情况下创建随机拓扑的新方法:在已经分布在机房中多个机柜中的非随机拓扑中随机交换链接端点。我们使用图分析和周期精确的网络仿真来定量评估以这种方式创建的拓扑,包括与非随机拓扑和先前提出的随机拓扑进行比较。

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