关键词: 网格平台, 轻量级, 本体, 交互, 性能, 可靠性

Abstract: The current OGSA based grid platforms are built with a feature-rich structure，such that the requirements of any grid application only need a subset of the complete list provided by the platform，and lack support for self-adaptive，reconfiguration and re-deployment.This paper presents a component-based and service-oriented reference model that can be used to design lightweight grid platform over Internet.The paper deeply discusses the architecture and some concepts about reference model，and an ontology-based interaction mechanism between components is studied.At last，a performance analytical model based on layered queuing networks and a reliability analytical model based on depending relations are studied.Finally，future research directions of the reference model are put forward.

Key words: grid platform, lightweight, ontology, interaction, performance, reliability