Network resource provisioning in research networks.

摘要

Advances in optical communication and networking technologies, together with the computing and storage technologies, are dramatically changing the ways scientific research is conducted. A new term, e-Science, has emerged to describe "large-scale science carried out through distributed global collaborations enabled by networks, requiring access to very large scale data collections, computing resources, and high-performance visualization" [12].;E-Science application workflows are complex and require schedulable and high-bandwidth connectivity with known future characteristics. Moreover, these workflows have performance requirements or metrics that have not been considered by conventional networking. For example, large file transfer may need guaranteed total turnaround time and the rate of progress. Given the long duration of many requests, the network resources available may change before it is completed.;We develop a novel framework for provisioning a variety of e-Science applications that require complex workflows that span over multiple domains. Our framework provides guarantees on the performance while incurring minimal overhead, both necessary conditions for such a framework to be adopted in practice.