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In the paper,based on the job characteristics and resources availability,an optimistic checkpoint mechanism for dynamic grids(OCM4G) is proposed.It can determine whether to checkpoint a given job running on a given resource node and establish optimal aperiodic checkpoint intervals by applying the knowledge of job characteristics and resource availability.We evaluate OCM4G over a real grid environment(ChinaGrid) and the results show that OCM4G achieves better performance than the periodic checkpoint and the analytical method of calculating aperiodic checkpoint intervals.
In the paper, based on the job characteristics and resources availability, an optimistic checkpoint mechanism for dynamic grids (OCM4G) is proposed. It can determine whether to checkpoint a given job running on a given resource node and establish optimal aperiodic checkpoint intervals by applying the knowledge of job characteristics and resource availability. We evaluate OCM4G over a real grid environment (ChinaGrid) and the results show that OCM4G achieves better performance than the periodic checkpoint and the analytical method of calculating aperiodic checkpoint intervals.