Division of Labor:
To enable Grid scalability and growth, a usage model has evolved
whereby resource providers make resources available not to individual users
directly, but rather to larger units, called virtual organizations. In this paper, we
describe abstractions that allow resource providers to delegate the usage of
remote resources dynamically to virtual organizations in applicationindependent
ways, and present and evaluate an implementation of this
abstraction using the Xen virtual machine and Linux networking tools. We also
describe how our implementation is being used in a specific context, namely the
enforcement of resource allocations in the Edge Services Framework, currently
deployed in the Open Science Grid.
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