Research And Application Of Monitoring And Discovery System In Grid Environment

The Grid has become the third popular technologic wave after the traditional internet and web. It is called the third generation application of internet. Actually Grid computing has emerged as a new important technology upon the internet. It is orientated to coordinated resource sharing and problem solving in dynamic and multi-institutional virtual organizations. The popularity of Internet,significantly lower cost of the high-speed network and rapid growth of the ability of computer computing, make the change of the way people use computers, while changing traditional method of computing. Grid Computing,which is to fully utilize the geographical distribution of resources (including databases,expensive equipment and other resources of all kinds) to solve complex and large-scale problems, has become an important trend in the development of supercomputing in recent years. It can be used to solve complex problems which can't be solved by only relying on local resources.One of the advantages of using the grid computing environment is to "farm out" long-running jobs,but that means we need some ways of keeping track of those jobs and the status for each of them. This requires a mechanism to monitor and discover the grid service and all its components (network,computer nodes,storage systems and etc.) in static and dynamic state. In Grid environment, resources and service information change very frequently, including addition of new services and resources and renewal of existing services and resources. This requires monitoring and discovery system (MDS) design must meet the following requirements:firstly, a "discovery" mechanism is needed so that the task scheduling process can identify the optimal resources combination;further, a "monitor" mechanism is also needed to track some interesting information.The author extracts the advanced thoughts of the existing Monitoring and Discovery System (MDS) in Grid. The main tasks and contributions of the paper are as follows:(1) Research the OGSA grid services architecture and the concrete realization model OGSI and WSRF;(2) Research and analyze the existing Monitoring and Discovery System in grid environment;(3) Develop and deploy a complete grid service on the platform GT4,which is released by the GGF(Global Grid Forum),providing a sample for follow-up;(4) Deploy the MDS, which can monitor the real-time nodes information of the hardware, task queue status, data transmission and the list of service in the containers.