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An improved DHT-based Grid Information services architecture

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3 Author(s)
Xia Zhu ; School of Computer Science and Engineering, Southeast University, Nanjing, China ; Junzhou Luo ; Aibo Song

Fundamental problems that confront traditional centralized Grid information services are low query efficiency and single points of failure. This paper presents an improved DHT-based Grid information services architecture, that resolves these problems well. The architecture assigns each resource node and information server an m-bit identifier by hashing attribute values. Every node makes connection with successor information server according to their identifiers to organize Virtual Organization(VO). Resource query is highly efficient with locating identifier. Information servers are fully decentralized, solving single points of failure. Range query is a difficult problem in DHT but an indispensable part in Grid information services. We improve our architecture with tree data structure and Path Caching Schemes to support range query. Results from theory analysis and simulations show that DHT-based architecture is highly efficient, robust, load balanced and scalable.

Published in:

Computer Supported Cooperative Work in Design, 2008. CSCWD 2008. 12th International Conference on

Date of Conference:

16-18 April 2008