Intel and universities team to create super-Internet

By Michael Kanellos, CNET News, 24 June, 2003 07:32

NEWS

Intel, Princeton University, the University of California at Berkeley, and a host of other academic and industrial heavyweights have banded together to take the lag out of getting data from halfway around the world. PlanetLab is an experimental network that sits on top of the Internet that will allow researchers and others to test and build applications that can essentially span the globe. Work accomplished at PlanetLab will eventually permit sites to broadcast video from computers located around the world in a coordinated fashion to swarms of users simultaneously without bogging down access. Similarly, virus hunters will be able to detect the spread of new viruses or denial-of-service attacks early. "Our goal is to provide a playing field for people to try their ideas on," said Dave Culler, a UC Berkeley professor and manager of Intel's research "lablet" associated with the university. "In the future, applications will spread themselves over a large fraction of the planet." Although many take worldwide communications for granted, the Internet isn't the stable, instantaneous network it often appears to be. Servers can crash. Excessive router hopping can create delays. In the future, the problems will only get worse as new applications and services are launched. Corporations will shift crucial applications to the Internet, and employees will subsequently complain about slow access times and security problems. One way around those issues will be to physically distribute applications to a wide variety of computers, which is where PlanetLab comes in. When completed, the network will consist of 1,000 servers geographically dispersed around the world. Participating researchers will then be able to use slivers of the network as a test bed for optimising applications to run on multiple computers or pull data out of multiple storage systems. A substantial portion of the work will revolve around trying to compensate for traffic patterns and delays that crop up on the Internet. Researchers try to develop applications with these issues in mind, but testing their ideas remains difficult and expensive. "There is a very high barrier to entry. How do you get (an application) across 1,000 machines to test," said Larry Peterson, a professor at Princeton and one of the core designers of the project. "Simulation and emulation don't cut it." Creating a network segregated from the mass of the Net also allows researchers to examine solutions for structural problems with the Web itself. "The Internet has become more rigid and far more brittle," Culler said. "That structure limits how much you can morph or change...Typically, applications are built on a few massive servers." The network, which was conceived in March 2002, consists of 160 computers dispersed to 65 sites in 16 countries. The machines run a modified version of Red Hat's Linux. The consortium expects to have 300 machines running by the end of the year. The full 1,000-computer network will be complete in a few years. Ninety-five active research projects are using the network, including CoDeeN, a project at Princeton geared at improving content delivery, and Sophia, another Princeton project seeking to refine search over distributed computers. NetBait, an Intel project, seeks to detect bugs better. Some of these projects may become integrated eventually into the basic structure of the Internet in the future, Culler said. "We are going to discover a common set of services that other services can run on," he said. Other participants include Hewlett-Packard Labs, the Massachusetts Institute of Technology, Harvard University, Cornell University, Rice University, and universities in Israel, China, England, Sweden, Taiwan and Germany.

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