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Autonomous reputation for equitable peer-to-peer resource sharing among eager consumers
Mowbray, Miranda; Andrade, Nazareno; Brasileiro, Francisco; Cirne, Walfredo
HPL-2003-211R1
Keyword(s): peer-to-peer; reputation; grid
Abstract: We consider the problem of encouraging equitable resource sharing over a peer-to-peer network of eager consumers. An eager consumer is one that will at times benefit from having as much resources as possible, and the rest of the time will have no requirements for resources from the network. This behaviour is exhibited by consumers of several types of resources. If eager consumers share their idle resources, we show that it is possible to ensure that resources are shared fairly and also that users are encouraged to donate spare resources, by using a simple autonomous reputation scheme. We use this approach in OurGrid, a system we are currently developing. We show through simulations that our reputation scheme can successfully deal with free-riders who try to fool the system by changing identity. Our scheme is very lightweight, and does not require central coordination or a cryptographic infrastructure. Notes: Nazareno Andrade, Francisco Brasileiro and Walfredo Cirne, Universidade Federal de Campina Grande, Brazil
15 Pages
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