Review on Grid Resource Discovery: Models and Strategies

Abstract

As grid technique is growing rapidly in recent years, large-scale grid systems usually have the capability of providing flexible, secure, coordinated resource-sharing and problem solving among dynamic virtual organizations. Grid resource discovery (GRD) is one of the crucial issues in the whole system and the discovery models and strategies have a vital influence on the performance of grid systems. In this paper, the definition and principles of GRD are explained first. Then, several existing GRD models, namely centralized, hierarchical, Peer-to-Peer (P2P)-based, group-clustering, and semantic-based models, are introduced in detail from both system architecture and resource matching pattern aspects. In particular, the strategies to increase the searching performance in these models are presented. Moreover, trust mechanism to ensure secure communications in P2P-based GRD models is emphasized. Besides, the comparative analysis among the GRD models is made. Finally, several promising research directions of GRD are provided.