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Staggered consistent checkpointing

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1 Author(s)
Vaidya, N.F. ; Dept. of Comput. Sci., Texas A&M Univ., College Station, TX, USA

A consistent checkpointing algorithm saves a consistent view of a distributed application's state on stable storage. The traditional consistent checkpointing algorithms require different processes to save their state at about the same time. This causes contention for the stable storage, potentially resulting in large overheads. Staggering the checkpoints taken by various processes can reduce checkpoint overhead. This paper presents a simple approach to arbitrarily stagger the checkpoints. Our approach requires that the processes take consistent logical checkpoints, as compared to consistent physical checkpoints enforced by existing algorithms. Experimental results on nCube-2 are presented

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Parallel and Distributed Systems, IEEE Transactions on  (Volume:10 ,  Issue: 7 )