A Dynamic Virtual Organization Solution for Web-Services Based Grid Middleware

Many solutions of virtual organization have been proposed in recent years. Most of them have one or more centralized component(s). Here, we show a system, which is fully distributed and independent. This system is designed using the Web-services based technologies and uses the idea "node" to indicate the server. It provides several simple behaviours to satisfy the basic requirements of grid computing. To easily describe the solution, we use pseudo code to model the message sequence in the system. The virtual organization solution builds an environment of authentication, single-sign-on, identity federation, long-lived authorization, short-lived delegation and transferable configuration. It is composed of several components. This system is designed using service-oriented architecture and has shown its security and benefit in administrative cost reduction, network traffic decrease and system performance improvement