PEOPLE always want more. That is a truism, but it is particularly true in the field of computing: more memory, more processing power, more speed, more everything. It is, perhaps, a neat linguistic coincidence that the rate at which this moreness is delivered is commonly known as Moore's law.The latest manifestation of this is the desktop supercomputer. Though the definition of a supercomputer is slippery, machines that carry this label have traditionally been big boxes that can do big calculations, such as those needed for forecasting weather, designing nuclear weapons and generating the graphics for Hollywood films. However, it is possible to get a similar effect by linking a number of smaller computers in what is known as a server cluster, using clever programming techniques to make them behave as a single unit.Full StoryOr below in PDF