网格环境下CGSP-DAI性能的研究和分析

ON PERFORMANCE OF CGSP-DAI IN GRID ENVIRONMENT AND ITS ANALYSIS

随着网格技术的迅速发展,海量复杂的结构化数据成为网格计算应用的主要难题,数据库技术在网格环境中的作用也变得尤为重要。对OGSA-DAI(Open grid services architecture-Date access and integration)的核心基础进行扩展,提出了一种构建在网格环境下异构数据库访问与集成的基础构架,通过虚拟表机制来集成各种异构的数据库资源,从而更加有效地在网格环境下访问和集成异构数据库,并且在大数据量查询和分布式联合查询方面做了一定的前瞻性工作。针对与单个虚拟表和多个虚拟表之间的分布式联合查询,设计两种典型实验场景,详细分析了CGSP-DAI的相关性能数据,验证了CGSP-DAI的可用性和有效性。

With the rapid development of grid technology, mass and complex structured data becomes the major challenge to grid computing applications, and database technology is particularly important in grid environment. By expanding the core basis of OGSA-DAI, this paper proposed a fundamental framework for heterogeneous database access and integration in grid environment. In the framework, various heterogeneous database resources are collected through the mechanism of virtual table, thus the access and integration of heterogeneous database become more effective in grid environment. Also, a certain degree of foresighted work in massive data queries and distributed joint queries has been done. Through the design of two typical experimental scenarios in allusion to the distributed joint queries of a single virtual table and of a number of virtual tables respectively,we analyzed the correlated performance data of CGSP （ChinaGird Support Platform）-DAI in very great detail, and proved the usability and effectiveness of CGSP-DAI.