An efficient design and implementation for grid advanced information service

Grid information service is an indispensable component for Grid computing, by which all types of Grid resources are virtually integrated and their information can be efficiently managed and accessed. Furthermore, the efficiency of Grid computing is dependent on the functionalities supported by Grid information service. At present, the Grid information service of Globus toolkitℳ 3, an Index service, supports a few basic functions such as service data population, subscription, and lookup. In this paper, we propose an information service component of Moredreamℳwhich we refer to as GAIS (Grid Advanced Information Service), for providing more plentiful resource information and advanced functionalities in order to satisfy the requirements for various applications in the K*Grid computing environment characterized by both high performance and high throughput computing. In particular, GAIS includes interfaces and functionalities for dynamic VO management, peer-to-peer communication, and service categorization. In addition, our resourcemonitoring tool reduces the monitoring overhead and maintains accuracy of events by detecting effective resource changes and collecting events at the kernel level, respectively. Consequently, we anticipate that our Grid information service will be broadly utilized through improved service qualities.