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One of the main challenges to exploit the potential of Cloud computing is the efficient management of virtual resources supplied by cloud providers. In this paper, we deal with a business model of cloud computing, where third-part entities, the cloud brokers, work as intermediary between cloud providers and clients. Brokers are assumed to provide the intermediation service by addressing multiple cloud...
Business oriented grids call for effective Quality of Service strategies able to adapt to different user requirements. Performance analyses and predictions with respect to different load conditions or management policies are essential instruments to define such strategies. In this paper, we present a non-Markovian Stochastic Petri Net model that allows to conduct performance analyses of Grid systems...
Starting from 1990s and until now, Grid computing has been mainly used in scientific laboratories. Only in the last few years, it is evolving into a business-innovating technology that is driving commercial adoption. In this paper, we describe GridVideo, a Grid-based multimedia application for the distributed tailoring and streaming of media files. The objective is to show, starting from a real experience,...
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