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Way of Measuring Data Transfer Delays among Graphics Processing Units at Different Nodes of a Computer Cluster
Moscow University Computational Mathematics and Cybernetics Pub Date : 2020-05-21 , DOI: 10.3103/s0278641920010021 A. A. Begaev , A. N. Salnikov
中文翻译:
测量计算机集群不同节点图形处理单元之间数据传输延迟的方法
更新日期:2020-05-21
Moscow University Computational Mathematics and Cybernetics Pub Date : 2020-05-21 , DOI: 10.3103/s0278641920010021 A. A. Begaev , A. N. Salnikov
Abstract
The basics of load tests for a computer cluster with a large number of GPUs (graphics processing units) distributed over the cluster’s nodes are presented and implemented as a program code. Information about the time delays in the transfer of data of different sizes among all GPUs in the system is collected as a result. Two modes of tests, ‘‘all to all’’ and ‘‘one to one,’’ are developed. In the first mode, all GPUs transfer data to all GPUs simultaneously. In the second mode, only the transfer between two GPUs proceeds at a single moment in time. Using test results obtained on the K60 computer cluster at the Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, it is shown that the interconnector medium of the supercomputer is inhomogeneous in data transfer among the GPUs not only for transfer through the network, but also for the GPUs in a common node of the computer cluster.中文翻译:
测量计算机集群不同节点图形处理单元之间数据传输延迟的方法