IBM Linux Cluster - Pegasus
NCAR's Computational and Information Systems Laboratory (CISL), formerly the Scientific Computing Division (SCD), took delivery of a new IBM e1350 supercomputer, which it named "pegasus," on January 31, 2005. NCAR scientists used the machine to run the Antarctic Mesoscale Prediction System (AMPS), a computer model based at NCAR that provided operational forecasts for researchers stationed in Antarctica.
The IBM e1350 was a relatively inexpensive yet powerful supercomputer configured to meet AMPS' near-term modeling needs, but it had the potential of being expanded to accommodate possible future increases in AMPS model resolution and complexity.
With 132 processors, a clock speed of 2.2 GHz, and a peak computational capability of nearly 580 gigaflops, pegasus could run a 20-kilometer (12-mile) version of AMPS about four times faster than its predecessor system could run a coarser 30-km (19-mile) version. Pegasus had more than 270 gigabytes of memory and 3 terabytes of disk capacity. It was connected to NCAR's Mass Store System and local area network via Ethernet.
The National Science Foundation, NCAR's primary sponsor, funded the computer through a special award from its Division of Atmospheric Sciences, with research support from the NSF Office of Polar Programs.