The 2013 NOAA Operational Supercomputing System Transition
In 2013, the National Centers for Environmental Prediction (NCEP) transitioned from the Central Computing System (IBM/Power 6/AIX) to the Weather and Climate Operational Supercomputing System (IBM/Intel/Linux). This discussion will center on the preparation, planning, implementation, and technical aspects which were required for NCEP to make this transition. Discussed in detail will be NCEP Central Operations (NCO)/Production Management Branch's efforts to transition the operational model suite to a faster, architecturally larger supercomputer system. This involved testing the existing code as well as a new operating system, scheduler, and workflow manager and tuning the numerical models and ancillary support systems to provide consistent delivery time to users.