| 基于多核处理器的节能任务调度方法 |
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| 引用本文： | 叶常华,左朝树. 基于多核处理器的节能任务调度方法[J]. 中国电子科学研究院学报, 2012, 7(2): 204-207 |
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| 作者姓名： | 叶常华 左朝树 |
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| 作者单位： | 保密通信重点实验室,成都,610041 |
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| 摘 要： | 由于关系到系统的安全性及散热代价等方面,能耗问题已经成为嵌入式系统研究的重点。对于多核处理器上具有依赖关系的周期性硬实时任务,设计了一种基于动态电压调节的节能任务调度方法。该方法首先用RDAG算法将任务独立化,然后以功耗最低为原则,采用遗传算法确定任务映射。基于Intel PXA270功耗模型,采用了几个随机任务集进行仿真实验,结果表明该方法比现有的方法节省了20%～30%的能耗。
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| 关 键 词： | 任务调度 动态电压调节 功耗优化 多核处理器 |
Energy-efficient Task Scheduling Approach for Multi-core Processors |
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| YE Chang-hua,ZUO Chao-shu. Energy-efficient Task Scheduling Approach for Multi-core Processors[J]. Journal of China Academy of Electronics and Information Technology, 2012, 7(2): 204-207 |
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| Authors: | YE Chang-hua ZUO Chao-shu |
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| Affiliation: | (Science and Techonology on Communication Security Laboratory,Chengdu 610041,China) |
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| Abstract: | Related to the safety of system and the cost of cooling,saving energy has been an important issue.For periodic hard real-time tasks with dependence running on multi-core processors,an energy-efficient task scheduling approach based on dynamic voltage scaling(DVS) was designed.Based on independent tasks produced by the RDAG algorithm,the approach took genetic algorithm(GA) to get the optimal scheduling.Based on the power model of the Intel PXA270,simulation experiments were conducted with several random task graphs.Results showed that the proposed approach decreased energy effectively. |
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| Keywords: | tasks cheduling dynamic voltage scaling energy-efficient multi-core processor |
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