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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/7819

Title: Dynamic Task Flow Scheduling for Heterogeneous Distributed Computing: Algorithm and Strategy
Authors: SUN, Wei
ZHANG, Yuanyuan
Keywords: heterogeneous distributed computing
task scheduling
task flow
genetic algorithm
scheduling strategy
Issue Date: 2007-04-01
Publisher: 電子情報通信学会
Magazine name: IEICE TRANSACTIONS on Information and Systems
Volume: E90-D
Number: 4
Start page: 736
End page: 744
DOI: 10.1093/ietisy/e90-d.4.736
Abstract: Heterogeneous distributed computing environments are well suited to meet the fast increasing computational demands. Task scheduling is very important for a heterogeneous distributed system to satisfy the large computational demands of applications. The performance of a scheduler in a heterogeneous distributed system normally has something to do with the dynamic task flow, that is, the scheduler always suffers from the heterogeneity of task sizes and the variety of task arrivals. From the long-term viewpoint it is necessary and possible to improve the performance of the scheduler serving the dynamic task flow. In this paper we propose a task scheduling method including a scheduling strategy which adapts to the dynamic task flow and a genetic algorithm which can achieve the short completion time of a batch of tasks. The strategy and the genetic algorithm work with each other to enhance the scheduler's efficiency and performance. We simulated a task flow with enough tasks, the scheduler with our strategy and algorithm, and the schedulers with other strategies and algorithms. We also simulated a complex scenario including the variant arrival rate of tasks and the heterogeneous computational nodes. The simulation results show that our scheduler achieves much better scheduling results than the others, in terms of the average waiting time, the average response time, and the finish time of all tasks.
Rights: Copyright (C)2007 IEICE. Wei Sun, Zhang Yuanyuan and Yasushi Inoguchi, IEICE TRANSACTIONS on Information and Systems, E90-D(4), 2007, 736-744. http://www.ieice.org/jpn/trans_online/
URI: http://hdl.handle.net/10119/7819
Material Type: publisher
Appears in Collections:e10-1. 雑誌掲載論文 (Journal Articles)

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