计算网格的中间件

The Middleware in the Computing Grid

因特网的出现使得数以千万计的各种类型的计算机连接组成一个集成的分布式系统,从而可以为科学计算、商业、教育及信息服务、娱乐等提供大量的应用服务.但人们一直用因特网只进行电子邮件及软件等的通信和信息检索,很少使用它进行真正意义上的计算.随着先进的网络技术特别是高速网络技术和先进的计算结构的出现,使得有可能建造一个大规模的高性能分布式计算环境--计算网格[1,2].

In the future, network computing will proceed within a large-scale high-performance distributed computing environment, so-called Computing Grid. It can integrate a numerous of global-wide distributed heterogeneous resources including networks , computers, peripherals, information and other kinds of resources, and supports their coordinate use. Computing Grid will provide users with services of resources management, access to data, login and authentication and security etc. The key to build Computing Grid environment is to develop middleware (software). Applications built on the middleware can access resources in the Grid and finish effective co-ordinate computing task very easily. In this paper, features of middleware are analyzed and compared, and some suggestions of research are also given in the paper.