This section describes the installation of three software packages that, when installed, will provide you with a complete working cluster. These packages differ radically. openMosix provides Linux kernel extensions that transparently move processes among machines to balance loads and optimize performance. While a truly remarkable package, it is not what people typically think about when they hear the word “cluster.” OSCAR and Rocks are collections of software packages that can be installed at once, providing a more traditional Beowulf-style cluster. Whichever way you decide to go, you will be up and running in short order.