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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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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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

CLC Number: 

  • TP316.2
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