A list scheduling algorithm for heterogeneous systems based on a critical node cost table and pessimistic cost table

作者：Zhou, Naqin^*; Qi, Deyu; Wang, Xinyang; Zheng, Zhishuo; Lin, Weiwei

来源：Concurrency and Computation: Practice and Experience (CCPE) , 2017, 29(5): e3944.

DOI：10.1002/cpe.3944

• DAG scheduling
• heterogeneous systems
• list scheduling
• static scheduling
• task graphs

This paper presents a novel list-based scheduling algorithm called Improved Predict Earliest Finish Time for static task scheduling in a heterogeneous computing environment. The algorithm calculates the task priority with a pessimistic cost table, implements the feature prediction with a critical node cost table, and assigns the best processor for the node that has at least 1 immediate successor as the critical node, thereby effectively reducing the schedule makespan without increasing the algorithm time complexity. Experiments regarding aspects of randomly generated graphs and real-world application graphs are performed, and comparisons are made based on the scheduling length ratio, robustness, and frequency of the best result. The results demonstrate that the Improved Predict Earliest Finish Time algorithm outperforms the Predict Earliest Finish Time and Heterogeneous Earliest Finish Time algorithms in terms of the schedule length ratio, frequency of the best result, and robustness while maintaining the same time complexity.

• 出版日期2017-3-10
• 单位华南理工大学