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Grid computing has relied on " best effort " as the guiding principal of operation. However, commercial grids need to provide much stricter guarantees. These guarantees have to be specified in terms of service level agreements and have to be monitored and assured. We propose an architecture for specifying and monitoring service level agreements to achieve(More)
The concept of Grid, based on coordinated resource sharing and problem solving in dynamic, multi-institutional virtual organizations, is emerging as the new paradigm in distributed and pervasive computing for scientific as well as commercial applications. We assume a global network of data centers housing an aggregation of computing, networking and storage(More)
Peer-to-peer computing (P2P) draws growing interest as a new distributed computing paradigm for its potential to harness " edge " computers (e.g., PCs) and make their under-utilized resources available to each other. P2P based e-commerce on the Internet is of particular interest because of P2P's cost effectiveness and redundancy-induced dependability.(More)
The paper discusses a framework and advanced technologies enabling the quantitative analysis, organization and optimization of large-scale, globally distributed enterprise and e-service systems. The goal is to organize complex systems in such ways that traffic at application and service layers can be better explained, predicted and controlled. In(More)
An automated service demand–supply control system can improve a large-scale grid infrastructure comprising a federation of distributed utility data centers. T he growing complexity of large-scale systems raises concerns about their effectiveness and man-ageability. New approaches to system design, use, and management address these concerns through the(More)