自从宽带网日渐盛行以来,人们越来越多时候谈到网格(Grid)。似乎网格的实现即使非指日可待,至少也有了清晰的路向。美国田纳西大学教授杰克·唐格拉说:“网格试图提供这样一种技术:人们可以把自己的微机插入网格,以后就可以透明地使用网格上的各种计算资源和知识资源,就像今天我们将任何一种家电设备插进墙上的插座,就可以方便地使用电一样。”这是一个有关网格的理想。现实和理想距离有多远 Since the advent of broadband networks, people are increasingly talking about the grid. It seems that even if the grid is not around the corner, there is at least a clear direction. Jack Tangra, a professor at the University of Tennessee in the United States, said: “Grid attempts to provide a technique by which people can insert their own computer into a grid and later transparently use the various computational resources and knowledge resources on the grid Like today we plug in any kind of home appliance into a wall socket, you can easily use the same electricity. ”This is an ideal grid. How far is the reality and the ideal?