BlueGene/L - eServer Blue Gene Solution
                    IBM
BGW - eServer Blue Gene Solution
                    IBM
ASC Purple - eServer pSeries p5 575 1.9 GHz
                    IBM
Columbia - SGI Altix 1.5 GHz, Voltaire Infiniband
                    HPE
Thunderbird - PowerEdge 1850, 3.6 GHz, Infiniband
                    Dell EMC
Red Storm Cray XT3, 2.0 GHz
                    Cray/HPE
Earth-Simulator
                    NEC
MareNostrum - JS20 Cluster, PPC 970, 2.2 GHz, Myrinet
                    IBM
Stella - eServer Blue Gene Solution
                    IBM
Jaguar - Cray XT3, 2.4 GHz
                    Cray/HPE
Thunder - Intel Itanium2 Tiger4  1.4GHz - Quadrics
                    California Digital Corporation
Blue Protein - eServer Blue Gene Solution
                    IBM
eServer Blue Gene Solution
                    IBM
Sapphire - Cray XT3, 2.6 GHz
                    Cray/HPE
MACH5 - Apple XServe, 2.0 GHz, Myrinet
                    Self-made
Cray X1E (4GB)
                    Cray/HPE
Cray X1E (2GB)
                    Cray/HPE
ASCI Q - AlphaServer SC45, 1.25 GHz
                    HPE
eServer pSeries p5 575 1.9 GHz
                    IBM
System X - 1100 Dual 2.3 GHz Apple XServe/Mellanox Infiniband 4X/Cisco GigE
                    Self-made
SGI Altix 3700 Bx2, 1.6 GHz, NUMALink
                    HPE
SGI Altix 3700 Bx2, 1.6 GHz, NUMALink
                    HPE
BlueGene/L DD1 Prototype (0.5GHz PowerPC 440 w/Custom)
                    IBM/ LLNL
HPC - Pentium4 Xeon, EM64T, Opteron, Opteron dual core, Cluster, Myrinet
                    IBM, Sun, Myricom
John Von Neumann - LNX Cluster, Xeon 3.6 GHz, Myrinet
                    Linux Networx
eServer pSeries 655 (1.7 GHz Power4+)
                    IBM
eServer pSeries 655 (1.7 GHz Power4+)
                    IBM
Tungsten - PowerEdge 1750, P4 Xeon 3.06 GHz, Myrinet
                    Dell EMC
eServer Blue Gene Solution
                    IBM
eServer Blue Gene Solution
                    IBM
eServer Blue Gene Solution
                    IBM
eServer Blue Gene Solution
                    IBM/ LLNL
eServer pSeries 690 (1.9 GHz Power4+)
                    IBM
eServer pSeries 690 (1.9 GHz Power4+)
                    IBM
DataStar - eServer pSeries 655/690 (1.5/1.7 GHz Power4+)
                    IBM
SGI Altix 3700 Bx2, 1.6 GHz, NUMALink
                    HPE
SX8/576M72
                    NEC
RIKEN Super Combined Cluster
                    Fujitsu
Mpp2 - Cluster Platform 6000 rx2600 Itanium2 1.5 GHz, Quadrics
                    HPE
CITerra - PowerEdge 1850, 3.2 GHz, Myrinet
                    Dell EMC
Dawning 4000A, Opteron 2.2 GHz, Myrinet
                    Dawning
Lightning - Opteron 2 GHz, Myrinet
                    Linux Networx
BigBen - Cray XT3, 2.4 GHz
                    Cray/HPE
MCR Linux Cluster Xeon 2.4 GHz - Quadrics
                    Linux Networx/Quadrics
eServer pSeries p5 575 1.5 GHz
                    IBM
ASCI White, SP Power3 375 MHz
                    IBM
Seaborg - SP Power3 375 MHz 16 way
                    IBM
TeraGrid, Itanium2 1.3/1.5 GHZ, Myrinet
                    IBM
eServer Opteron 2.2 GHz. Myrinet
                    IBM
Mp - PowerEdge SC1425 3.6 GHz- Infiniband
                    Dell EMC
PRIMEPOWER HPC2500 (2.08 GHz)
                    Fujitsu
xSeries Cluster Xeon 2.4 GHz - Quadrics
                    IBM/Quadrics
Bassi - eServer pSeries p5 575 1.9 GHz
                    IBM
Explore - SGI Altix 3700 Bx2, 1.5 GHz, NUMAlink, Infiniband
                    HPE
Lilac - xSeries x335 Cluster, Xeon 3.06 GHz, Quadrics
                    IBM
eServer pSeries 690 (1.7 GHz Power4+)
                    IBM
AIST Super Cluster P-32 - AIST Super Cluster P-32, Opteron 2.0 GHz, Myrinet
                    IBM
Tungsten 2 - PowerEdge 1850, 3.6 GHz, Infiniband
                    Dell EMC
SGI Altix 3700 Bx2, 1.6 GHz, NUMALink
                    HPE
Cluster Platform 4000 DL145 Opteron 2.6 GHz Infiniband
                    HPE
Tera10 beta system - NovaScale 5160, Itanium2 1.6 GHz, Quadrics
                    Atos
eServer pSeries p5 575 1.9 GHz
                    IBM
eServer BladeCenter JS20 (PowerPC970 2.2 GHz), Myrinet
                    IBM
JUMP - eServer pSeries 690 (1.7 GHz Power4+)
                    IBM
Marylou4 - PowerEdge 1855, 3.6 GHz, GigEthernet
                    Dell EMC
Topdawg - PowerEdge 1850, 3.2 GHz, Infiniband
                    Dell EMC
PRIMEPOWER HPC2500 (1.3 GHz)
                    Fujitsu
MVS-15000BM, eServer BladeCenter JS20 (PowerPC970 2.2 GHz), Myrinet
                    IBM
Lenngren - PowerEdge 1850, 3.4 GHz, Infiniband
                    Dell EMC
Cray XT3, 2.6 GHz
                    Cray/HPE
eServer pSeries p5 575 1.9 GHz
                    IBM
eServer Blue Gene Solution
                    IBM
eServer Blue Gene Solution
                    IBM
eServer Blue Gene Solution
                    IBM
eServer Blue Gene Solution
                    IBM
eServer Blue Gene Solution
                    IBM
eServer Blue Gene Solution
                    IBM
Orangena - eServer Blue Gene Solution
                    IBM
Intimidata - eServer Blue Gene Solution
                    IBM
eServer Blue Gene Solution
                    IBM
Cluster Platform 3000 DL360G4 Xeon 3.4 GHz, Myrinet
                    HPE
Cluster Platform 3000 DL360G4 Xeon 3.4 GHz, Myrinet
                    HPE
eServer pSeries p5 575 1.9 GHz
                    IBM
Turing - XServe G5 2GHz, Myrinet
                    Self-made
PRIMEPOWER HPC2500 (1.56 GHz)
                    Fujitsu
AlphaServer SC45, 1 GHz
                    HPE
eServer pSeries 655 (1.7 GHz Power4+)
                    IBM
eServer pSeries 655 (1.7 GHz Power4+)
                    IBM
Slide Rule - PowerEdge 1850/1855 3.2 GHz GigEthernet
                    Dell EMC
Houat - eServer pSeries p5 575 1.5 GHz, Myrinet
                    IBM
Cosmos - PowerEdge 1750, P4 Xeon 3.2 GHz, Myrinet
                    Dell EMC
DeepComp 6800, Itanium2 1.3 GHz, QsNet
                    Lenovo
pSeries 690 Turbo 1.3 GHz
                    IBM
lonestar - PowerEdge 1750, Pentium4 Xeon 3.2/3.06 GHz, Myrinet
                    Dell-Cray
The Hive - Cluster Platform 3000 DL360G3 Xeon 3.06 GHz, Verari BladeRack 3.4 GHz, GigEthernet
                    HPE
Atipa Cluster, Opteron, Myrinet
                    Atipa Technology
Atipa Cluster, Opteron, Myrinet
                    Atipa Technology
eServer pSeries p5 575 1.9 GHz
                    IBM
AlphaServer SC45, 1 GHz
                    HPE
Cluster Platform 4000 DL145 Opteron 2.6 GHz Infiniband
                    HPE