43 Systems T he main challenge in P2P computing is to design and implement a robust and scalable distributed system composed of inexpensive, individually unreliable computers in unrelated administrative domains. The participants in a typical P2P system might include computers at homes, schools, and businesses, and can grow to several million concurrent participants. P2P systems are attractive f...

Peer-to-peer (P2P) networks such as Gnutella and BitTorrent have revolutionised Internet based applications. P2P approaches provide a number of benefits, however most cycle stealing projects, such as SETI@home, have concentrated on centralised methods which still require massive amounts of concentrated network bandwidth in order to scale. More recent P2P research has developed the concept of di...

A generic linear mathematical model is proposed to represent the dynamics of bandwidth usage, network topology, and host processing power in large scale Peer-to-Peer (P2P) networks. Feedback control theory is employed to analyze system stability and query controllability, as well as deriving an explicit solution for the bandwidth usage. The proposed model and analysis methods can be applied to ...

Mobile Ad hoc networks (MANET) and Peer-to-Peer (P2P) networks share central characteristics such as their distributed and decentralized nature. Combining both networking paradigms results in a Mobile Peer-to-Peer (MP2P) system that operates independently from a preexisting infrastructure. Securing MP2P networks in terms of availability and robustness as basic demands in envisioned application ...

In a peer-to-peer (P2P) network, nodes connect into an existing network and participate in providing and availing of services. There is no dichotomy between a central server and distributed clients. Current P2P networks (e.g., Gnutella) are constructed by participants following their own un-coordinated (and often whimsical) protocols; they consequently suffer from frequent network overload and ...

Nowadays, the rapid development of computer networks calls for highly distributed management technologies that aim at integration and automation. This paper then gives an overview of current management architectures for computer networks, and tries to apply P2P technologies to make up existing limitations in term of performance, scalability, flexibility, maintainability and reliability. Due to ...

Computer network technologies have been growing explosively and the study in computer networks is being challenging task system participants want to get the final result, In this research work central node may become overloaded, especially if many nodes request the result at the same time. This work present a proposal to build a high throughput computing system totally based upon the Peer-to-Pe...

Ever increasing use of heterogeneous networks including mobile devices and ad-hoc sensor networks signifies the role of such information system properties as openness, autonomy, cooperation, coordination, etc. Agent-based service-oriented Peer-to-Peer (P2P) architecture provides attractive (if not single) design and implementation paradigm for such systems. This trend implies coherent evolution...

This work deals with the efficiency of Peer-to-Peer (P2P) networks, which are distributed and self-organizing overlay networks. We contribute to their understanding and design by using new measurement techniques, simulations and analytical methods. In this context we first present measurement methods and results of P2P networks concerning traffic and topology characteristics as well as concerni...

Distributed Approximation is a new and rapidly developing discipline that lies at the crossroads of various well-established areas of Computer Science Distributed Computing, Approximation Algorithms, Graph Theory and often, Computational Geometry. This thesis focuses on the design and analysis of distributed algorithms to solve optimization problems that usually arise in large-scale, heavily dy...