SUPER-UXSUPER-UX was a version of the Unix operating system from NEC that is used on its SX series of supercomputers.HistoryThe initial version of SUPER-UX was based on UNIX System V version 3.1 with features from BSD 4.3. The version for the NEC SX-9 was based on SVR4.2MP with BSD enhancements.FeaturesSUPER-UX is a 64-bit UNIX operating system. It supports the Supercomputer File System.Earth SimulatorThe Earth Simulator uses a custom OS called "ESOS" based on SUPER-UX. It has many enhanced features custom designed for the Earth Simulator which are not in the regular SUPER-UX OS.