开放网格服务体系结构OGSA及其仿真应用

该文对目前网格最新的体系结构一开放网格服务体系结构OGSA进行了介绍，该体系结构基于Web Selwices框架提出了一种网格服务结构的思想。OGSA的服务功能主要包括动态服务创建、服务发现、生命周期管理、注册和通知等。分布式仿真系统与网格有许多相似之处，同时基于HLA标准建立的分布仿真系统又存在着很多有待完善之处，所以提出将网格技术结合到仿真系统的设计中，建立基于网格的分布式仿真系统。基于OGSA的结构特点，这种新的仿真系统以建立标准的仿真服务为中心，同时实现了对仿真资源的动态分配和调度，增强了系统的可重用性和灵活性。

Open Grid Services Architecture and Its Application in Simulation

We have introduced the Open Grid Services Architecture (OGSA), which is the current version of the Grid architecture. Based on the mechanism of Web Services, OGSA advanced an idea of Grid Services, whose interfaces address discovery, dynamic service creation, lifetime management, notification and registry. There are many similarities between the Grid and the distributed simulation systems, while quite a few deficiencies exist in the simulation systems conforming to the standard of HLA. Therefore, we will combine them together and build a new distributed simulation system based on Grid. With the characteristics of OGSA, the central idea of this new system is to build standard simulation services, and to realize dynamic distribution of the resources as well, which will strengthen the reusability and flexibility of the simulation system.