数据网格中,文件往往存在多个副本,采用模拟退火算法来有效地确定最优副本以满足用户作业的需求.最小化用户作业所付出的代价,提高整个系统的收益,用OptorSim模拟实验结果证明了其有效性。
There are many replicas in data grid,In order to efficiently and fastly make sure the most effective replica, we use simulated annealing algorithm to fulfil the requirement of the running job and minimize the cost of the job and improve the overall profit.Through using OptorSim simulator,test results prove the effectivity of the policy.