基于构件和数据流的可视化元计算环境  

Research on and Design of Meta-Computing system

作　　者：李国东[1] 王东奎[1] 杨海荣[1] 张德富[1] 

机构地区：[1]南京大学计算机软件新技术国家重点实验室,南京210093

出　　处：《计算机科学》2002年第10期139-143,共5页Computer Science

基　　金：国家863项目(编号863-306-ZT06-04-4)的资助

摘　　要：1.介绍 1992年Smarr和Catlett首先提出了元计算的概念[1],他们认为,元计算就是把分布在广域网上的各种计算资源集合起来,并以一个整体的计算环境的形式提供给用户.元计算系统不但能提高系统整体的计算能力,而且它还集成了一些高性能专用设备,使得很多普通用户也有机会能够使用它们.Metacomputing technique is one of the main stream techniques in the future. In this paper we propose a component-dataflow-based metacomputing environment which provides integrated development platform and run-time environment to construct and execute parallel applications. A parallel computational model (dataflow model based on component)is presented,which enables programmers to use components to build parallel applications using the same way in building sequential applications. We also present a three-tier client/server architecture for metacomputing environment: front-end,middleware, resource tier. The front-end answers for visual parallel application development; the middleware is layered management system which manages tasks、computing resources and maps tasks to appropriate resources ;and the resource tier is in charge of the management and scheduling of distributed resources. To avoid performing tedious and time-consuming low level operations,we use Globus toolkits to implement most of underlying functional components.

关 键 词：计算机网络 局域网 INTERNET 构件 数据流 可视化元计算环境 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]