| With the third tide of the Internet, application based on GRID technology has become a tendency of resource share domain. GRID is not a new word for Internet, neither is it mean to abandon or replace Internet. It is based on the Internet with higher quality and stronger function and wider user.GRID mainly concentrates on high-performance science and engineering calculation field when it initially produces. But with the rapid development of studying GRID, the application of GRID is expanding constantly. GRID technology which is suitable for different applications has appeared, and it has already served production and various kinds of business activities directly. Now, how to utilize existing tools and technology appropriately, and make the best of realizing GRID application becomes more and more important, and this is the purpose that this subject hopes to achieve too.Through studying and analyzing the GRID architecture -OGSA and the supporting platform - Globus, the paper have probed into some key technology of realizing GRID application. I have done some concrete jobs in the following respects :(1) Explain and define the deep meaning of GRID and GRID Computing, and introduce the domestic and international current research and development situation of GRID;(2) Study and analyse the universal GRID architecture (the Five Sand Filter Structure and the Open GRID Service Architecture OGSA);(3) Study and analyse the Globus project and the Globus platform (or called Globus toolkits ), and carry on a simple introduction on some applied development tools that base on the Globus platform;(4) Study and analyse the key technology of GRID application on the basis of the OGSA structure and the Globus platform; And take XPort as an example , make the discussion and analysis of the instance to the GRID application in the distributed instrument system.Finally, I hope this paper can play a "casting a brick to attract jade" role , and promotes the development of GRID application in our country.
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