While the advent of distributed and grid computing systems will open new opportunities for scientific exploration, the reality of such implementations could prove to be a system administrator's nightmare. A lot of effort is being spent on identifying and resolving the obvious problems of security, scheduling, authentication and authorization. Lurking in the background, though, are the largely unaddressed issues of accountability and usage accounting: · Mapping resource usage to resource users; · Defining usage economies or methods for resource exchange; · Describing implementation standards that minimize and compartmentalize the tasks required for a site to participate in a grid.
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