PlanetLab
Encyclopedia
PlanetLab is a group of computers available as a testbed
Testbed
A testbed is a platform for experimentation of large development projects. Testbeds allow for rigorous, transparent, and replicable testing of scientific theories, computational tools, and new technologies.The term is used across many disciplines to describe a development environment that is...

 for computer networking and distributed systems research. It was established in 2002 by Prof. Larry L. Peterson
Larry L. Peterson
Prof. Larry L. Peterson is a noted American computer scientist at Princeton University, in Princeton, New Jersey.Dr. Peterson received his B.S. in Computer Science from Kearney State College, Nebraska, in 1979, and M.S. and Ph.D. degrees in Computer Science from Purdue University in 1982 and 1985,...

, and as of June 2010 was composed of 1090 node
Node (networking)
In communication networks, a node is a connection point, either a redistribution point or a communication endpoint . The definition of a node depends on the network and protocol layer referred to...

s at 507 sites worldwide. Each research project has a "slice", or virtual machine
Virtual machine
A virtual machine is a "completely isolated guest operating system installation within a normal host operating system". Modern virtual machines are implemented with either software emulation or hardware virtualization or both together.-VM Definitions:A virtual machine is a software...

 access to a subset of the nodes.

Accounts are limited to persons affiliated with corporations and universities that host PlanetLab nodes. However, a number of free, public services have been deployed on PlanetLab, including CoDeeN
Codeen
CoDeeN is a proxy server system created at Princeton University in 2003 and deployed for general use on PlanetLab.It operates as per the following:# Users set their internet caches to a nearby high bandwidth proxy that participates in the system....

, the Coral Content Distribution Network
Coral Content Distribution Network
The Coral Content Distribution Network, sometimes called Coral Cache or Coral, is a free peer-to-peer content distribution network designed and operated by Michael Freedman...

, and Open DHT. Open DHT was taken down on 1 July 2009.

PlanetLab members develop tools for the greater good of the community, and as a result each user has a wide choice of tools to use in order to complete regular slice maintenance tasks.

PlanetLab experiences have been critical in the formulation of the US National Science Foundation
National Science Foundation
The National Science Foundation is a United States government agency that supports fundamental research and education in all the non-medical fields of science and engineering. Its medical counterpart is the National Institutes of Health...

's Global Environment for Network Innovations (GENI) initiative.

External links

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