Top500 List - June 2005

Rmax and Rpeak values are in TFlops. For more details about other fields, check the TOP500 description.

Rpeak values are calculated using the advertised clock rate of the CPU. For the efficiency of the systems you should take into account the Turbo CPU clock rate where it applies.

Rank Site System Cores Rmax (TFlop/s) Rpeak (TFlop/s) Power (kW)
1 DOE/NNSA/LLNL
United States
BlueGene/L - eServer Blue Gene Solution
IBM
65536 136.8 183.5 716
2 IBM Thomas J. Watson Research Center
United States
BGW - eServer Blue Gene Solution
IBM
40960 91.3 114.7 448
3 NASA/Ames Research Center/NAS
United States
Columbia - SGI Altix 1.5 GHz, Voltaire Infiniband
SGI
10160 51.9 61.0
4 Japan Agency for Marine -Earth Science and Technology
Japan
Earth-Simulator
NEC
5120 35.9 41.0 3200
5 Barcelona Supercomputing Center
Spain
MareNostrum - JS20 Cluster, PPC 970, 2.2 GHz, Myrinet
IBM
4800 27.9 42.1
6 ASTRON/University Groningen
Netherlands
Stella - eServer Blue Gene Solution
IBM
12288 27.4 34.4 134
7 Lawrence Livermore National Laboratory
United States
Thunder - Intel Itanium2 Tiger4 1.4GHz - Quadrics
California Digital Corporation
4096 19.9 22.9
8 Computational Biology Research Center, AIST
Japan
Blue Protein - eServer Blue Gene Solution
IBM
8192 18.2 22.9 89
9 Ecole Polytechnique Federale de Lausanne
Switzerland
eServer Blue Gene Solution
IBM
8192 18.2 22.9 89
10 Sandia National Laboratories
United States
Red Storm, Cray XT3, 2.0 GHz
Cray Inc.
5000 15.2 20.0
11 DOE/SC/Oak Ridge National Laboratory
United States
Cray XT3, 2.4 GHz
Cray Inc.
3748 14.2 18.0
12 Los Alamos National Laboratory
United States
ASCI Q - AlphaServer SC45, 1.25 GHz
Hewlett-Packard
8192 13.9 20.5
13 Lawrence Livermore National Laboratory
United States
eServer pSeries p5 575 1.9 GHz
IBM
2048 13.1 15.6 334
14 Virginia Tech
United States
System X - 1100 Dual 2.3 GHz Apple XServe/Mellanox Infiniband 4X/Cisco GigE
Self-made
2200 12.2 20.2
15 Air Force Research Laboratory
United States
SGI Altix 3700 Bx2, 1.6 GHz, NUMALink
SGI
2048 11.8 13.1
16 Japan Atomic Energy Research Institute
Japan
SGI Altix 3700 Bx2, 1.6 GHz, NUMALink
SGI
2048 11.8 13.1
17 IBM Rochester
United States
BlueGene/L DD1 Prototype (0.5GHz PowerPC 440 w/Custom)
IBM/ LLNL
8192 11.7 16.4
18 China Meteorological Administration
China
eServer pSeries 655 (1.7 GHz Power4+)
IBM
3200 10.3 21.8
19 Naval Oceanographic Office - NAVO DSRC
United States
eServer pSeries 655 (1.7 GHz Power4+)
IBM
2944 10.3 20.0
20 NCSA
United States
Tungsten - PowerEdge 1750, P4 Xeon 3.06 GHz, Myrinet
Dell
2500 9.8 15.3
21 IBM - Almaden Research Center
United States
eServer Blue Gene Solution
IBM
4096 9.4 11.5 44
22 IBM - Deep Computing Capacity on Demand Center
United States
eServer Blue Gene Solution
IBM
4096 9.4 11.5 44
23 IBM Thomas J. Watson Research Center
United States
eServer Blue Gene Solution
IBM/ LLNL
4096 9.4 11.5 44
24 ECMWF
United Kingdom
eServer pSeries 690 (1.9 GHz Power4+)
IBM
2176 9.2 16.5
25 ECMWF
United Kingdom
eServer pSeries 690 (1.9 GHz Power4+)
IBM
2176 9.2 16.5
26 National Computational Infrastructure National Facility (NCI-NF)
Australia
SGI Altix 3700 Bx2, 1.6 GHz, NUMALink
SGI
1536 9.0 9.8
27 HWW/Universitaet Stuttgart
Germany
SX8/576M72
NEC
576 8.9 9.2
28 US Army Research Laboratory (ARL)
United States
John Von Neumann - LNX Cluster, Xeon 3.4 GHz, Myrinet
Linux Networx
2048 8.8 13.9
29 Institute of Physical and Chemical Res. (RIKEN)
Japan
RIKEN Super Combined Cluster
Fujitsu
2048 8.7 12.5
30 DOE/SC/Pacific Northwest National Laboratory
United States
Mpp2 - Cluster Platform 6000 rx2600 Itanium2 1.5 GHz, Quadrics
Hewlett-Packard
1936 8.6 11.6
31 Shanghai Supercomputer Center
China
Dawning 4000A, Opteron 2.2 GHz, Myrinet
Dawning
2560 8.1 11.3
32 Los Alamos National Laboratory
United States
Lightning - Opteron 2 GHz, Myrinet
Linux Networx
2816 8.1 11.3
33 Pittsburgh Supercomputing Center
United States
BigBen - Cray XT3, 2.4 GHz
Cray Inc.
2060 7.9 9.9
34 Lawrence Livermore National Laboratory
United States
MCR Linux Cluster Xeon 2.4 GHz - Quadrics
Linux Networx/Quadrics
2304 7.6 11.1
35 DOE/SC/LBNL/NERSC
United States
Seaborg - SP Power3 375 MHz 16 way
IBM
6656 7.3 10.0
36 Lawrence Livermore National Laboratory
United States
ASCI White, SP Power3 375 MHz
IBM
8192 7.3 12.3
37 University of Southern California
United States
HPC - Sun Fire V60, IBM xServer,2.8-3.2 GHz, Myrinet
IBM, Sun, Myricom
2640 7.3 14.8
38 NCSA
United States
TeraGrid, Itanium2 1.3/1.5 GHZ, Myrinet
IBM
1776 7.2 10.3
39 US Army Research Laboratory (ARL)
United States
eServer Opteron 2.2 GHz. Myrinet
IBM
2320 7.2 10.2
40 University of Sherbrooke
Canada
Mp - PowerEdge SC1425 3.6 GHz- Infiniband
Dell
1152 6.9 8.3
41 Nagoya University
Japan
PRIMEPOWER HPC2500 (2.08 GHz)
Fujitsu
1664 6.9 13.8
42 Lawrence Livermore National Laboratory
United States
xSeries Cluster Xeon 2.4 GHz - Quadrics
IBM/Quadrics
1920 6.6 9.2
43 UCSD/San Diego Supercomputer Center
United States
DataStar - eServer pSeries 655/690 (1.5/1.7 Ghz Power4+)
IBM
1696 6.4 10.4
44 Lawrence Livermore National Laboratory
United States
Lilac - xSeries x335 Cluster, Xeon 3.06 GHz, Quadrics
IBM
1540 6.2 9.4
45 HPCx
United Kingdom
eServer pSeries 690 (1.7 GHz Power4+)
IBM
1600 6.2 10.9
46 Grid Technology Research Center, AIST
Japan
AIST Super Cluster P-32 - AIST Super Cluster P-32, Opteron 2.0 GHz, Myrinet
IBM
2200 6.2 8.8
47 NCSA
United States
Tungsten 2 - PowerEdge 1850, 3.6 GHz, Infiniband
Dell
1024 6.1 7.4
48 NCSA
United States
SGI Altix 3700 Bx2, 1.6 GHz, NUMALink
SGI
1024 6.0 6.6
49 Lawrence Livermore National Laboratory
United States
eServer pSeries p5 575 1.9 GHz
IBM
896 5.9 6.8 146
50 DOE/SC/Oak Ridge National Laboratory
United States
Cray X1
Cray Inc.
504 5.9 6.5
51 Seoul National University
Korea, South
eServer BladeCenter JS20 (PowerPC970 2.2 GHz), Myrinet
IBM
968 5.6 8.5
52 Forschungszentrum Juelich (FZJ)
Germany
JUMP - eServer pSeries 690 (1.7 GHz Power4+)
IBM
1312 5.6 8.9
53 Brigham Young University
United States
Marylou4 - PowerEdge 1855, 3.6 GHz, GigEthernet
Dell
1260 5.4 9.1
54 University of Oklahoma
United States
Topdawg - PowerEdge 1850, 3.2 GHz, Infiniband
Dell
1024 5.4 6.6
55 National Aerospace Laboratory of Japan
Japan
PRIMEPOWER HPC2500 (1.3 GHz)
Fujitsu
2304 5.4 12.0
56 Joint Supercomputer Center
Russia
MVS-15000BM, eServer BladeCenter JS20 (PowerPC970 2.2 GHz), Myrinet
IBM
924 5.4 8.1
57 Swiss Scientific Computing Center (CSCS)
Switzerland
Cray XT3, 2.6 GHz
Cray Inc.
1100 4.8 5.7
58 Boston University
United States
eServer Blue Gene Solution
IBM
2048 4.7 5.7 22
59 DOE/SC/Argonne National Laboratory
United States
eServer Blue Gene Solution
IBM
2048 4.7 5.7 22
60 Forschungszentrum Juelich (FZJ)
Germany
eServer Blue Gene Solution
IBM
2048 4.7 5.7 22
61 NCAR (National Center for Atmospheric Research)
United States
eServer Blue Gene Solution
IBM
2048 4.7 5.7 22
62 NIWS Co, Ltd
Japan
eServer Blue Gene Solution
IBM
2048 4.7 5.7 22
63 UCSD/San Diego Supercomputer Center
United States
Intimidata - eServer Blue Gene Solution
IBM
2048 4.7 5.7 22
64 University of Edinburgh
United Kingdom
eServer Blue Gene Solution
IBM
2048 4.7 5.7 22
65 KTH - Royal Institute of Technology
Sweden
Lenngren - PowerEdge 1850, 3.2 GHz, Infiniband
Dell
886 4.7 5.7
66 University of Illinois
United States
Turing - XServe G5 2GHz, Myrinet
Self-made
1024 4.6 8.2
67 Kyoto University
Japan
PRIMEPOWER HPC2500 (1.56 GHz)
Fujitsu
1472 4.6 9.2
68 Pittsburgh Supercomputing Center
United States
AlphaServer SC45, 1 GHz
Hewlett-Packard
3016 4.5 6.0
69 NOAA R&D/ National Centers for Environmental Prediction
United States
eServer pSeries 655 (1.7 GHz Power4+)
IBM
1152 4.4 7.8
70 NOAA R&D/ National Centers for Environmental Prediction
United States
eServer pSeries 655 (1.7 GHz Power4+)
IBM
1152 4.4 7.8
71 Caltech/JPL
United States
Cosmos - PowerEdge 1750, P4 Xeon 3.2 GHz, Myrinet
Dell
1024 4.3 6.6
72 Computer Network Information Center, Chinese Academy of Science
China
DeepComp 6800, Itanium2 1.3 GHz, QsNet
lenovo
1024 4.2 5.3
73 NCAR (National Center for Atmospheric Research)
United States
pSeries 690 Turbo 1.3 GHz
IBM
1600 4.2 8.3
74 Texas Advanced Computing Center/Univ. of Texas
United States
lonestar - PowerEdge 1750, Pentium4 Xeon 3.2/3.06 GHz, Myrinet
Dell-Cray
1024 4.2 6.3
75 DOE/Bettis Atomic Power Laboratory
United States
Atipa Cluster, Opteron, Myrinet
Atipa Technology
1090 4.0 5.2
76 DOE/Knolls Atomic Power Laboratory
United States
Atipa Cluster, Opteron, Myrinet
Atipa Technology
1090 4.0 5.2
77 Commissariat a l'Energie Atomique (CEA)
France
AlphaServer SC45, 1 GHz
Hewlett-Packard
2560 4.0 5.1
78 Lawrence Livermore National Laboratory
United States
eServer pSeries 655 (1.5 GHz Power4+)
IBM
1024 3.8 6.1
79 Lawrence Livermore National Laboratory
United States
eServer pSeries 655 (1.5 GHz Power4+)
IBM
1024 3.8 6.1
80 Korea Meteorological Administration
Korea, South
Cray X1E
Cray Inc.
252 3.8 4.6
81 US Army HPC Research Center at NCS
United States
Cray X1E
Cray Inc.
252 3.8 4.6
82 Bank (H)
Germany
BladeCenter Xeon 3.06 GHz, Gig-Ethernet
IBM
1064 3.8 6.5
83 Bank (L)
United Kingdom
BladeCenter HS20 Xeon 3.06 GHz, Gig-Ethernet
IBM
3200 3.8 19.6
84 ConocoPhillips
United States
BladeCenter Xeon 3.06 GHz, Gig-Ethernet
IBM
1056 3.8 6.5
85 Credit Suisse/First Boston
United Kingdom
BladeCenter HS20 Xeon 3.06 GHz, Gig-Ethernet
IBM
1500 3.8 9.2
86 Digital Content Provider
Australia
BladeCenter HS20 Xeon 3.06 GHz, Gig-Ethernet
IBM
1148 3.8 7.0
87 Financial Services (H)
United States
BladeCenter HS20 Cluster, Xeon 3.2 GHz, GigEthernet
IBM
1024 3.8 6.6 167
88 Geoscience (B)
India
BladeCenter HS20 Cluster, Xeon EM64T 3.4 GHz - Gig-Ethernet
IBM
1024 3.8 7.0 167
89 Geoscience (C)
United Kingdom
xSeries Xeon 3.06 GHz - Gig-E
IBM
1128 3.8 6.9
90 Geoscience (C)
United Kingdom
xSeries Xeon 3.06 GHz - Gig-E
IBM
1128 3.8 6.9
91 IBM - Deep Computing Capacity on Demand Center
United States
xSeries Xeon 3.06 GHz - Gig-E
IBM
1000 3.8 6.1
92 Petroleum Company (C)
Brazil
xSeries Cluster Xeon 3.06 GHz - Gig-E
IBM
1024 3.8 6.3
93 PGS
United States
xSeries Cluster Xeon 3.06 GHz - Gig-E
IBM
1024 3.8 6.3
94 Saudi Aramco
Saudi Arabia
BladeCenter HS20 Cluster, Xeon 3.2 GHz, GigEthernet
IBM
1536 3.8 9.8 251
95 Semiconductor Company (D)
Israel
xSeries Xeon 3.06 GHz - Gig-E
IBM
1120 3.8 6.9
96 Telco
Canada
BladeCenter HS20 Cluster, Xeon 3.2 GHz, GigEthernet
IBM
1036 3.8 6.6 169
97 Westgrid
Canada
glacier - BladeCenter Xeon 3.06 GHz, Gig-Ethernet
IBM
1680 3.8 10.3
98 WETA Digital
New Zealand
BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
IBM
1000 3.8 7.2 163
99 PetrĂ³leo Brasileiro S.A
Brazil
bwr1 - Cluster Platform 3000 DL140G3 Xeon 3.06 GHz GigEthernet
Hewlett-Packard
1300 3.7 8.0
100 Naval Oceanographic Office - NAVO DSRC
United States
pSeries 690 Turbo 1.3 GHz
IBM
1408 3.7 7.3