Abstract
Scheduling optimization depends not only on resources selection but also on time sequence correlatively in grid.After the time sequence characteristics in resource reservation were analyzed,a dynamic time model was presented,in which the back-free-time was calculated for applying to the subsequence task.Thus,a Back-free-time Optimization Scheduling(BOS) algorithm was proposed.Finally the performance of BOS algorithm was compared with that of the cost optimization scheduling algorithm through simulations.Experimental results show that the back-free-time optimization scheduling algorithm can decrease runtime and cost within grid environments.
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