Fundamentals and concepts Using the Globus Toolkit OGSA introduction Grid computing, most simply stated, is distributed computing taken to the next evolutionary level. The goal is to create the illusion of a simple yet large and powerful self managing virtual computer out of a large collection of connected heterogeneous systems sharing various combinations of resources. The standardization of communications between heterogeneous systems created the Internet explosion.

The emerging standardization for sharing resources, along with the availability of higher bandwidth, are driving a possibly equally large evolutionary step in grid computing. The following major topics will be introduced to the readers in this chapter: What grid computing can do Grid concepts and components Grid construction The present and the future What the grid cannot do

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