【摘要】 网格系统的基本特征和要求是动态开放性 ,体现为主体的用户、客体的资源是松耦合的 ,随着时间和空间而动态变化 主体和客体的行为及状态是由一系列生命周期构成 ,比如主体的注册、登录、使用、挂起、维护、退出、注销周期 ,以及客体资源的创建、集成、部署、使用、下线、维护、消亡周期 网格的设计、使用和评价需要突破传统的观念 ,对实体对象的生命周期全过程进行考察 ,称之为网格的全生命周期原理 提出并定义网格的生命周期、全生命周期、全生命周期生产率和它们之间的关系 利用全生命周期原理 ,对比传统的计算机系统的评价和使用方法 ,对典型的网格应用场景进行分析 ,试图更精确地说明网格的使用和评价问题更多还原

【Abstract】 The two key features of a grid are its dynamics and openness. The user subjects and resource objects of a grid system are decoupled, and change dynamically in time and space. Their behavior and state are composed of a series of life cycles. A user subject’s life cycles may consist of registration, logon, usage, suspending, maintenance, logout, and exit. A resource object’s life cycles may include creation, integration, deployment, usage, offline, maintenance, and exit. For grid subject or object, what is different from that of a traditional system is that its full life cycles must be considered in the process of design, usage, and evaluation of grid, which is called the full life cycle principle for grid. In this paper life cycle, full life cycle, and their productivity are proposed and defined. The relationship between these concepts is also studied. By studying the productivity of a typical grid scenario according to the principle, the usage and evaluation of grid are illustrated in contrast to traditional systems.更多还原