OptorSim在安全数据网格复制策略中的应用

Application of OptorSim in Replication Strategies for Data Gird

数据网格环境下,复制策略的优劣直接影响到整个网格资源的使用性能,鉴于复制策略对整个网格系统的重要性,该文利用OptorSim网格模拟器,通过构建仿真环境,根据仿真性能评估标准对不同的访问模式,不同数据网格复制策略的仿真数据进行了分析研究。具体研究了仿真软件的数据网格结构、复制策略、作业调度策略、访问模式以及它们对整个数据网格性能的影响。仿真结果表明该复制策略可以减小单个作业的系统开销和最大的利用计算单元。

Replication strategies directly effect on use of grid resources in data grid. As the replication strategies are very important to the data grid, this paper builds up a simulation environment with OptorSim simulators, and analyzes different replication strategies according to different accessing models. Reasearch of data structure of grid, replication strategies, policy of job scheduler, mode of access, and effect on data grid. It is verified by the simulation results that the replication strategies adopted in this paper can cut down the system cost of single operation and make the most use of computing unit.