Peer peer to peer p2p skype clients supernode systems

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Unformatted text preview: eld. Peer Peer-to-Peer (P2P) Skype clients Supernode Systems Perspective: Scalable Peer Peer-to-Peer (P2P) Systems Perspective: Scalable Grid The The “Grid” is a vision • ensemble of geographically-dispersed resources • seamless, transparent access Analogy to Power Grids • cheap, ubiquitous, consistent • computational grids deliver computing & data - not power • Core Grid Features and Challenges • • • • • single-sign on dynamic and shared highly heterogeneous multiple administrative domains sheer scale Systems Perspective: Wide-area OS Cloud Cloud Buzz words: Virtualized Pay-as-you-go Scale up Systems Systems perspective: centralized management, co-location CSci CSci 5103 Operating Systems Operating System Design Tannenbaum MOS Chap. 13 Goals Goals of an OS Define abstractions Provide primitive operations Ensure isolation Manage the hardware Multiple roles of the OS … Why Why is it hard to design an OS? 1. Extremely large program. Unix 1M loc, Windows 2K 29M 2. 2....
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