摘要： 基于云计算平台的卫星地面应用系统所承载的任务日益增多,需要在有限的系统资源下提高虚拟资源的利用率和系统的任务处理效率。为此,提出一种基于云模型相似度的资源映射方法。给出任务处理所需资源与资源池可分配资源云模型的定义,根据云模型逆向云算法计算任务资源与可用资源云模型的数字特征,引入云模型相似性测度方法对任务资源与可用资源云模型的相似性进行度量,从而确定优先资源映射。仿真结果表明,该方法可以提高云化系统资源利用率,并且满足多任务处理的实时性需求。

关键词: 云计算, 卫星地面应用系统, 资源映射, 云模型, 相似性测度

Abstract: The satellite ground application system based on cloud computing platform carries more and more tasks,which needs to improve the virtual resource utilization and task processing efficiency within the limited system resources.Aiming at this problem,this paper proposes a resource mapping method based on similarity of cloud model.Firstly,the definition of required resources of task processing and distributable resource cloud model in resource pool are given.Then,the digital signatures of task resource and usable resource cloud model are calculated according to the reverse cloud algorithm.Finally,the measure method of cloud model similarity is introduced to calculate the similarity of cloud model,thereby determining prior resource mapping.Simulation results show that the proposed method can improve the resource utilization of clouded systems,and it can meet the timeliness requirements of multi-tasking processing.

Key words: cloud computing, satellite ground application system, resource mapping, cloud model, similarity measure

中图分类号: 

• TP301