Research And Implementation Of Destributed Computing Platform Based On GRID

Grid is a compositive computing and resource environment, which can contain all kinds of computing resources, and change them to an environment which can provide reliable, standard and economic computing capability. Grid research is in the exploring phase yet, which includes computing grid, data grid, information grid and simulating grid, etc. Computing grid can be able to aggregate the homogeneity or heterogeneity computer, workstation, cluster, database, apparatus and storage device, etc, and change them into relatively transparent, virtual high performance environment.A distributed computing platform based on grid has been designed to provide grid services such as computing and simulation resources sharing by coupling up disperse computing resources in ESEC of COSIC into a "computing pool" which has high computing capability.This paper focuses on computing grid. First, make a detailed research on basic grid technology, especially on grid architecture. Second, do an In-depth analysis about several typical grid middleware relating to the development of grid application. At last, summarize the characters and design about Grid Computing Environment (GCE).Based on the above research, a specific plan is made to implement the distributed computing platform based on grid. It includes three parts primarily: user interactive interface layer, the agent-based middleware layer, grid resource layer. Where, user interactive interface is to resolve the problem that user want to use all kinds of resource through uniform web portal. Grid resource layer takes charge of executing the user's task. Each computer of grid layer has installed with Globus Toolkit 3.2, and established valid authenticated grid user whose accessing right is limited. Grid resource layer does not provide accessing interface to user directly. The resource is transparent to user and user doesn't need to consider the place of the grid resource. The user only need to submit their job in the portal and all the other work is be done by the agent which is an agent-based middleware, which takes charge of communicating with server to help executing user's job. The agnet-based middleware has five modules: resource scheduling, resource broker, data management, job management and authentication/ authorization.At last, an instance of C AMR model is run on the platform to validate the correctness and practicability of the system design.System views the "page computing" as the basic computing method. It is important to drive to gain ground the high performance computing and it makes the grid to be the real tools of researchers.