USAToday: The open-source Linux operating system is just one of several choices for desktop computers, enterprise servers and other common implementations. Sometimes it is chosen, but often it is not.
But at the high end of the computational power range — in supercomputers built by national laboratories, NASA or the Defense Department from clusters of processors — Linux is rapidly gaining ground on Unix as the operating system of choice.
Linux is becoming increasingly adaptable to large computing systems, said Jonathan Eunice, president and principal analyst at Illuminata Inc. Because the high-performance computing market is somewhat specialized, the makers of proprietary operating systems are less aggressive in marketing to such users.
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