文献类型：期刊文献

英文题名：An Energy-efficient Task Scheduling Approach for Variable Frequency Multi-core Processors

作者：Wang, Yingfeng[1];Tu, Hong[2];Qin, Shengjun[3]

第一作者：王颖锋

通讯作者：Wang, YF[1]

机构：[1]Henan Univ Econ & Law, Coll Comp & Informat Engn, Zhengzhou 450002, Peoples R China;[2]N China Univ Water Resources & Elect Power, Zhengzhou 450011, Peoples R China;[3]Dalian Maritime Univ, Coll Transportat Management, Dalian 116026, Peoples R China

第一机构：河南财经政法大学计算机与信息工程学院

通讯机构：[1]corresponding author), Henan Univ Econ & Law, Coll Comp & Informat Engn, Zhengzhou 450002, Peoples R China.|[1048412]河南财经政法大学计算机与信息工程学院;[10484]河南财经政法大学;

年份：2011

卷号：14

期号：10

起止页码：3385-3394

外文期刊名：INFORMATION-AN INTERNATIONAL INTERDISCIPLINARY JOURNAL

收录：;Scopus(收录号：2-s2.0-84860157024);WOS:【SCI-EXPANDED(收录号:WOS:000299301100020)】；

语种：英文

外文关键词：Task graph; Energy-efficient; Real -time systems; Dynamic voltage scaling; Multi-core

摘要：For periodic hard real-time tasks running on variable frequency multi-core processors, an approach based on dynamic voltage scaling (DVS) is designed. First, tasks are ordered by decreasing cycles and task mapping is arranged based on the principle of shortest makespan. Then optimal execution order of tasks on each processor core is determined during execution time extension in the case of DVS. The proposed approach can reduce both dynamic and transition energy consumption. Experiments are conducted on several random task sets based on the power model of Intel PXA255. Results show that the proposed approach can decrease energy of multi-core processors effectively.