吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (4): 1112-1117.doi: 10.13229/j.cnki.jdxbgxb201404032

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制的容错节能调度算法

张忆文, 郭锐锋   

  1. 1.中国科学院 沈阳计算技术研究所, 沈阳 110168;
    2.中国科学院大学, 北京 100039
  • 收稿日期:2013-01-07 出版日期:2014-07-01 发布日期:2014-07-01
  • 通讯作者: 郭锐峰(1968-), 男, 研究员, 博士生导师.研究方向:实时系统与数控技术.E-mail:grf@sict.ac.cn
  • 作者简介:张忆文(1988-), 男, 博士研究生.研究方向:低功耗调度.E-mail:zywsy2010@126.com
  • 基金资助:
    国家科技重大专项项目(2012ZX01029001-002); 国家科技支撑计划项目(2012BAF13B08)

Fault-tolerant energy-saving scheduling algorithm base on checkpoint scheme

ZHANG Yi-wen1, 2, GUO Rui-feng1   

  1. 1.Shenyang Institute of Computing Technology, Chinese Academy of Sciences, Shenyang 110168, China;
    2.University of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2013-01-07 Online:2014-07-01 Published:2014-07-01

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摘要： 综合考虑了实时系统的容错和节能, 针对处理器提供离散的频率和电压, 提出了基于检查点机制的容错节能调度算法(CPFTES)。该算法利用动态电压缩放技术节能, 通过确定优化的检查点且使用检查点机制实现容错。当任务发生错误时, 恢复任务从已保存的检查点重新启动以最大的处理器速度运行, 确保任务不错过截止期限。提出了H_SPEED和A_SPEED两种速度选择策略。仿真实验表明:在PXA250处理器上, CPFTES_A_SPEED比CPFTES_NODVS平均节约66.18%的能耗, CPFTES_A_SPEED比 CPFTES_H_SPEED节约0~19.41%的能耗。

关键词: 计算机系统结构, 容错, 检查点, 动态电压缩放, 功耗管理

Abstract: A Fault-tolerant Energy-saving Scheduling Algorithm base on Checkpoint Scheme (CPFTES) is proposed. The algorithm considers fault tolerance and power management in real-time system that the discrete frequency and voltage are provided by processors. The fault tolerance is achieved via optimal checkpoint scheme and the power management is carried out using dynamic voltage scaling. The optimal checkpoints can help the task to guarantee the timing constraints and reliability. If a task fails, it can restart from a saved checkpoint and execute at the maximum speed to ensure the deadlines are met. Two speed selection strategies, named H_SPEED and A_SPEED, of the algorithm are proposed. Simulation results show that CPFTES_A_SPEED can save about 66.18% energy compared to CPFTES_NODVS and save about 0~19.41% energy compared to CPFTES_H_SPEED under PXA250 processors.

Key words: computer system architecture, fault-tolerance, checkpoint, dynamic voltage scaling, power management

中图分类号: 

  • TP316.2
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