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基于网格资源可用度的元任务映射算法

Keywords: 网格计算,映射,元任务,网格仿真

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Abstract:

针对Min-Min启发式算法没有充分考虑网格的异构特性,导致资源负载不均衡的问题,提出一种基于资源可用度的启发式映射算法,在元任务与资源映射过程中,先计算资源对元任务的可用度,然后将元任务划分为优先映射与次优先映射两部分,再对这两组元任务分别应用经典Min-Min算法进行映射.采用仿真软件模拟网格异构环境,在元任务与资源一定的情况下,分别模拟这两种算法的元任务与资源的映射过程,得到这两种情况下的任务完成时间.实验结果表明,基于资源可用度的启发式算法在异构的网格环境中任务完成时间更短.

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