中文摘要：

提出与描述了适合大规模因特网环境的对等网络服务网格平台PSGP（P2P-based Service Grid Platform）的设计、实现与性能评测.PSGP平台结合了对等网络技术、网格的Web Services技术、面向服务的框架技术,使得PSGP平台具有非集中性、可扩展性、互操作性与鲁棒性好的优点.使用对等网络的JXTA协议完成对等实体的组织、资源发现、服务调用的功能.通过设置对等实体的衔级、安全的认证机制等高级技术保证了平台的安全性与可信任机制.并行应用的案例测试表明,PSGP在对等实体的通信轮回时间、应用的吞吐量上,具有较好的性能,可以作为实现大规模的分布式模拟的可行方案.

英文摘要：

The design,implementation and performance evaluation of a P2P-based Service Grid Platform called PSGP over the Internet was presented and described in this paper.Using peer-to-peer networks technology,Grid web services technology and services oriented framework,PSGP can get the good characters of decentralization,scalability,interoperability and robustness.A general-purpose P2P library,JXTA was also used in PSGP over which peers can communicate with each other,and thus peer organization,peer resource discovery and services method invocation can benefit a lot from JXTA.The results obtained from example applications and performance analysis show that time of turnaround and throughput of PSGP was good.PSGP is a feasible approach for large scale parallel and distributed computation.