Multi-cluster environment consists of computational nodes that allow computational problems with resource requirement more than those available resources in a cluster to be treated. Scheduling jobs in heterogeneous multi-cluster environments where each cluster has varied number of processors and each computational node has a varying speed is NP hard. Thus, we always search for sub-optimal solution for scheduling jobs. Various meta-heuristics have been proposed for scheduling jobs. The literature shows that the Genetic algorithm has been employed for parallel jobs scheduling in heterogeneous multi cluster environment. But it suffers from certain limitations like slow convergence speed, local optima problem. In this research work, a Grey Wolf Optimization algorithm (GWO) has been introduced in order to minimize makespan, flowtime and mean waiting time. The proposed methodology has shown quite significant improvement over available ones.

Heterogeneous multi-cluster environment, Scheduling, Co-allocation, Grey wolf Optimization Algorithm(GWOA))

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