Chinese Journal of Computers   Full Text
Title	Research and Implementation of Information Service Model on Grid with Multiple Autonomous Domains
Authors	ZHANG Hai-Hui1) ZHOU Xing-She1) YANG Zhi-Yi1) WU Xiao-Jun2) YANG Gang1)
Address	1)(College of Computer Science, Northwestern Polytechnical University, Xi′an 710072) 2)(College of Information Engineering, Chang′an University, Xi′an 710064)
Year	2008
Issue	No.1(65—76)
Abstract &   Background	Abstract Grid is an effective pattern for implementing heterogeneous resource sharing. Information service is a vital component of grid system, it carries out efficient management of system services and resources. ChinaGrid is a large-scale grid containing multiple autonomous domains. Existing information services can not meet the requirements of systems and applications with such kind of characteristics.This paper presents GISA2.0(Grid Information Service Architecture,GISA), focusing on autonomous domain management and resource information security. GISA2.0 implements a scalable grid information model and service-oriented hierarchical information management framework, which supports the aggregation of monitoring information from multiple monitoring systems. To achieve secure, fast, and user-related virtual global resource view, GISA2.0 uses a cross-domain information retrieval mechanism based on distributed XPath engine. keywords multiple autonomous domain grid; ChinaGrid; information service; distributed XPath engine; resource view background This paper conducts research on the information service model for large-scale grid. Many researches have been done on grid information service, but they generally have not taken into consideration of the autonomy issue of virtual organization management. Most of the past research has taken the approach of direct information aggregation. Some of the researches use general information to represent interconnecting among multiple grids, but few of them study information management with autonomy requirement within grid. The GISA2.0 presented in this paper focuses on the characteristics of large-scale environments, such as heterogeneity, diversity, dynamic, and autonomy, supports autonomous management of information service, secure information access, consistent global view, and fast information retrieval. The research in this paper is part of the CGSP(ChinaGrid Support Platform) project, which is a core sub-project of ChinaGrid programme. ChinaGrid is the largest grid projects in China. The goal of ChinaGrid project is to integrate various resources distributed in CERNET(China Education and Research Network), providing high quality services to scientific research and study. CGSP provides a set of development tools for those ChinaGrid application developers; it has been successfully applied in the development of campus grid applications in more than twenty universities. In the first phase of CGSP, the research team presented GISA1.0, which implemented efficient layered information aggregation, but paid little attention in security and information retrieval. The research content presented in this paper is applied in the second phase of CGSP. Each campus grid is an autonomous ChinaGrid domain, with its own resource share scheme, and the mechanism to process interaction with other domains. CGSA2.0 can provide information management support for multiple-domain grids.