基于层次模式的网格资源发现研究

Grid Resource Discovery Method Based on Hierarchical Model

网格被普遍认为是下一代网络,而资源发现是网格资源管理的基本组成部分。完全集中式资源发现机制和完全分布式资源发现机制都存在若干优点和缺点,因此,在集中式和分布式资源发现方法的基础上,提出了基于层次模式的资源发现方法。将网格中的资源分成三层结构,其中包括物理网络层、资源信息层和索引信息层,在此分层的基础上提出了基于层次模式的资源发现方法。最后对该方法进行模拟,并对模拟结果进行分析,该方法有较好的时间扩展性和性能,同时,在这种方法中能通过并行的方法发现需要的资源。

Grid is commonly considered as next generation network, and resource discovery is a basic component of grid resource management. There are some disadvantages in totally-centering and totally- distributed resource discovery method. Base on centering resource discovery and distributed resource discovery methods ,a hierarchical resource discovery method is proposed, in which resource in grid is divided into 3 structure layers, including physical network layer, resource information layer and index in- formation layer. Based on the layers resource discovery method based on hierarchical model was put forward. The simulation results indicate that the method has good time extensibility and performance. Furthermore, in the method required resource can be discovered by collateral way.