+ NASA Home + Ames Home + Sitemap + Staff Directory +Home HIGH END SYSTEMS + Pleiades + Columbia + Schirra SGI ICE - PLEIADES SUPERCOMPUTER Pleiades has been chosen as NASA's next-generation technology to meet the agency's future supercomputing requirements. With Pleiades, the NAS facility will provide more than 2.5 times its current high-end computing capability for NASA scientists and engineers to conduct simulation and modeling for agency missions. The system is named after the astronomical open star cluster of the same name. Pleiades System Facts Manufacturer - SGI System Architecture 100 Compute Cabinets (64 nodes each; 6,400 nodes total) 609 Tflop/s cluster Total cores: 51,200 Nodes 5888 nodes 2 quad-core processors per node Xeon E5472 (Harpertown) processors Processor speed - 3GHz Cache - 6MB per pair of cores 512 nodes (RT Jones domain) 2 quad core processors per node Xeon X5355 (Clovertown) processors Processor speed - 2.66GHz Cache - 4MB per pair of cores Subsystems 8 front-end nodes 1 PBS server Memory Type - DDR2 FB-DIMMs 1GB per core, 8GB per node Total Memory - 51 TB Interconnects Internode - InfiniBand, 6,400 compute nodes in a 10D hypercube Two independent InfiniBand fabrics running at 4x DDR Gigabit Ethernet management network Storage Nexis 9000 home filesystem 3 Lustre cluster-wide filesystems, each containing: 8 Object Storage Servers (OSS) 1 Metadata server (MDS) 2 DDN 9900 RAIDs - 300TB total Operating Environment Operating system - SUSE Linux Job Scheduler - PBS Compilers - C,Intel Fortran, SGI MPI ADDITIONAL INFORMATION + Getting an account at NAS + SGI ICE Systems Documentation + Pleiades Star Cluster Information + Pleiades Among World's Fastest Supercomputers + Feedback + Site Help + NASA Privacy Statement, Disclaimer, and Accessibility Certification Editor: Jill Dunbar Webmaster: John Hardman NASA Official: Rupak Biswas + Contact NAS Last Updated: March 30, 2009