Rank Site Computer Processors Year Rmax Rpeak
1 DOE/NNSA/LLNL
United States BlueGene/L - eServer Blue Gene Solution
IBM 131072 2005 280600 367000
2 NNSA/Sandia National Laboratories
United States Red Storm - Sandia/ Cray Red Storm, Opteron 2.4 GHz dual core
Cray Inc. 26544 2006 101400 127411
3 IBM Thomas J. Watson Research Center
United States BGW - eServer Blue Gene Solution
IBM 40960 2005 91290 114688
4 DOE/NNSA/LLNL
United States ASC Purple - eServer pSeries p5 575 1.9 GHz
IBM 12208 2006 75760 92781
5 Barcelona Supercomputing Center
Spain MareNostrum - BladeCenter JS21 Cluster, PPC 970, 2.3 GHz, Myrinet
IBM 10240 2006 62630 94208
6 NNSA/Sandia National Laboratories
United States Thunderbird - PowerEdge 1850, 3.6 GHz, Infiniband
Dell 9024 2006 53000 64972.8
7 Commissariat a l'Energie Atomique (CEA)
France Tera-10 - NovaScale 5160, Itanium2 1.6 GHz, Quadrics
Bull SA 9968 2006 52840 63795.2
8 NASA/Ames Research Center/NAS
United States Columbia - SGI Altix 1.5 GHz, Voltaire Infiniband
SGI 10160 2004 51870 60960
9 GSIC Center, Tokyo Institute of Technology
Japan TSUBAME Grid Cluster - Sun Fire x4600 Cluster, Opteron 2.4/2.6 GHz and ClearSpeed Accelerator, Infiniband
NEC/Sun 11088 2006 47380 82124.8
10 Oak Ridge National Laboratory
United States Jaguar - Cray XT3, 2.6 GHz dual Core
Cray Inc. 10424 2006 43480 54204.8
11 Maui High-Performance Computing Center (MHPCC)
United States Jaws - PowerEdge 1955, 3.0 GHz, Infiniband
Dell 5200 2006 42390 62400
12 Texas Advanced Computing Center/Univ. of Texas
United States Lonestar - PowerEdge 1955, 2.66 GHz, Infiniband
Dell 5200 2006 41460 55473.6
13 Forschungszentrum Juelich (FZJ)
Germany JUBL - eServer Blue Gene Solution
IBM 16384 2006 37330 45875
14 The Earth Simulator Center
Japan Earth-Simulator
NEC 5120 2002 35860 40960
15 Atomic Weapons Establishment
United Kingdom Cray XT3, 2.6 GHz dual Core
Cray Inc. 7812 2006 32500 40622
16 Cray Inc.
United States Cray XT4, 2.6 GHz
Cray Inc. 6696 2006 27980 34819
17 ASTRON/University Groningen
Netherlands Stella - eServer Blue Gene Solution
IBM 12288 2005 27450 34406.4
18 Leibniz Rechenzentrum
Germany HLRB-II - Altix 4700 1.6 GHz
SGI 4096 2006 24360 26214
19 Lawrence Livermore National Laboratory
United States Thunder - Intel Itanium2 Tiger4 1.4GHz - Quadrics
California Digital Corporation 4096 2004 19940 22938
20 Cambridge University
United Kingdom Darwin - PowerEdge 1950, 3.0 GHz, Infinipath
ClusterVision/Dell 2340 2006 18270 28080