It is possible to get large volume number crunching without spending millions of rupees on a supercomputer. You only need to link together (by some high speed network) the requisite number of CPUs, with GNU/LINUX as the underlying OS. Add some freely available message passing software and a effective parallel processing number crunching machine is made. Such clusters are called "Beowulf clusters". The other advantages of such a cluster other than building costs is, up-gradation costs are minimal. The two best resources for Linux cluster builders are
* The Beowulf Project home page and
* The Extreme Linux Project
These sites are upgraded frequently with useful information for cluster builders.
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