Pleiades
5,376-node SGI ICE cluster
516 teraflops, peak
Xeon 5472 (Harpertown) processors (3 GHz)
43,008 cores (2 quad-core processors per node)
20 terabytes of memory

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Columbia
23-node SGI Altix constellation-class supercluster
89.2 teraflops, peak
14,336 processors (1.5/1.6 GHz Intel Itanium2-Madison: single-core; Montecito: dual-core)
28 terabytes of memory

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Schirra
IBM POWER5+ supercomputer
4.9 teraflops, peak
40 compute nodes, each with 16 SMPs in 8 dual-cores
1.24 terabytes of memory

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RTJones
SGI ICE cluster
43 teraflops, peak
4,096 cores (Xeon quad-core)
4 terabytes of memory

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Discover

Total System: 67 teraflops, peak
IBM iDataPlex Cluster System
42 teraflops, peak

4,096 processors

512 nodes, with 2 quad-core Xeon L5420 processors (2.50 GHz) each

4.096 terabytes of memory

Linux Cluster Custom Supersystem
25 teraflops, peak
2,560 processors (512 3.2 GHz Xeon, 2,048 2.6 GHz Xeon)
1.536 terabytes of memory

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