网格环境中资源发现机制的研究

Research on Resource Discovery Mechanisms in Grids

资源发现机制是关系到广域分布式环境中资源共享和协同工作效率的关键 在计算网格、Web服务和P2P技术中 ,都需要对这个问题进行深入研究 在织女星网格前期工作的基础上 ,讨论了资源发现机制中的核心问题 描述了织女星网格资源发现机制的层次结构以及各个层次的功能和实现 通过分析和实验 ,可以认为提出的资源发现机制具有以下特点 :可在较小的开销下取得满意的资源定位性能 ,并具有网格环境下的可扩展性 ;能够适应网格资源动态变化的特性 ;能够解决资源发现过程中的负载平衡问题 ;

The resource discovery is a key problem in wide-area distributed systems, such as computational grid, Web services, and peer-to-peer. It has great impact on the efficiency of the resource sharing and collaborating in such environments. Based on previous work on Vega grid, the key issues of resource discovery are discussed. A layered architecture of the Vega grid resource discovery mechanism, and the functionality of each layer and its implementation are described. The analysis and experiment results show that this mechanism has the following features: having good resource locating performance and scalability in grid environments; being adapted to the dynamic of grid resources; being able to solve the load balance in resource discovery process, and accommodating various grid resources and applications.