PEER-TO-PEER NETWORK FAMILIES

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PEER-TO-PEER NETWORK FAMILIES U. Jhashuva1 Asst. Prof Dept. of CSE http://www.gridandcloudcomputing.wordpress.com

CONTENTS INTRODUCTION P2P SYSTEMS OVERLAY NETWORKS P2P APPLICATION FAMILIES P2P COMPUTING CHALLENGES SUMMARY REFERENCES

INTRODUCTION The P2P architecture offers a distributed model of networked systems. P2P network is client-oriented instead of server-oriented

P2P SYSTEMS In a P2P system, every node acts as both a client and a server, providing part of the system resources. Peer machines are simply client computers connected to the Internet. All client machines act autonomously to join or leave the system freely. No central coordination or central database is needed. The system is self-organizing with distributed control. Cont…

P2P SYSTEMS Architecture: Cont…

P2P SYSTEMS Initially, the peers are totally unrelated. Each peer machine joins or leaves the P2P network voluntarily. Only the participating peers form the physical network at any time. Unlike the cluster or grid, a P2P network does not use a dedicated interconnection network. The physical network varies in size and topology dynamically due to the free membership in the P2P network.

OVERLAY NETWORKS Data items or files are distributed in the participating peers. Based on communication or file-sharing needs, the peer IDs form an overlay network at the logical level. This overlay is a virtual network formed by mapping each physical machine with its ID, logically, through a virtual mapping. When a new peer joins the system, its peer ID is added as a node in the overlay network. Cont…

OVERLAY NETWORK When an existing peer leaves the system, its peer ID is removed from the overlay network automatically. Therefore, it is the P2P overlay network that characterizes the logical connectivity among the peers. There are two types of overlay networks Structured Unstructured Cont…

OVERLAY NETWORK An unstructured overlay network is characterized by a random graph. There is no fixed route to send messages or files among the nodes. Structured overlay networks follow certain connectivity topology and rules for inserting and removing nodes (peer IDs) from the overlay graph.

P2P APPLICATION FAMILIES Based on application, P2P networks are classified into four groups. Details have mentioned in the table below. Cont…

P2P APPLICATION FAMILIES Cont…

P2P APPLICATION FAMILIES Collaboration P2P networks include MSN or Skype chatting, instant messaging, and collaborative design, among others. The third family is for distributed P2P computing in specific applications. For example, SETI@home provides 25 Tflops of distributed computing power, collectively, over 3 million Internet host machines. Other P2P platforms, such as JXTA, .NET, and FightingAID@home.

SUMMARY We learned about System Models for Advanced Computing CLUSTERS OF COOPERSTIVE COMPUTING P2P NETWORKS GRID COMPUTING CLOUD COMPUTING System Models for Advanced Computing

ANY QURIES ?

REFRENCES [1.3. System models for Distributed Computing] in Distributed and Cloud Computing : From Parallel Processing to the Internet of things by Kai Hwang, Geoffrey C. Fox, and Jack J. Dongarra