BlueGene/L - eServer Blue Gene Solution
                    IBM
BGW - eServer Blue Gene Solution
                    IBM
Columbia - SGI Altix 1.5 GHz, Voltaire Infiniband
                    HPE
Earth-Simulator
                    NEC
MareNostrum - JS20 Cluster, PPC 970, 2.2 GHz, Myrinet
                    IBM
Stella - eServer Blue Gene Solution
                    IBM
Thunder - Intel Itanium2 Tiger4  1.4GHz - Quadrics
                    California Digital Corporation
Blue Protein - eServer Blue Gene Solution
                    IBM
eServer Blue Gene Solution
                    IBM
Red Storm, Cray XT3, 2.0 GHz
                    Cray/HPE
Cray XT3, 2.4 GHz
                    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
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/ LLNL
eServer pSeries 690 (1.9 GHz Power4+)
                    IBM
eServer pSeries 690 (1.9 GHz Power4+)
                    IBM
SGI Altix 3700 Bx2, 1.6 GHz, NUMALink
                    HPE
SX8/576M72
                    NEC
John Von Neumann - LNX Cluster, Xeon 3.4 GHz, Myrinet
                    Linux Networx
RIKEN Super Combined Cluster
                    Fujitsu
Mpp2 - Cluster Platform 6000 rx2600 Itanium2 1.5 GHz, Quadrics
                    HPE
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
ASCI White, SP Power3 375 MHz
                    IBM
Seaborg - SP Power3 375 MHz 16 way
                    IBM
HPC - Sun Fire V60, IBM xServer,2.8-3.2 GHz, Myrinet
                    IBM, Sun, Myricom
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
DataStar - eServer pSeries 655/690 (1.5/1.7 Ghz Power4+)
                    IBM
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
eServer pSeries p5 575 1.9 GHz
                    IBM
Cray X1
                    Cray/HPE
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
Cray XT3, 2.6 GHz
                    Cray/HPE
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
Intimidata - eServer Blue Gene Solution
                    IBM
eServer Blue Gene Solution
                    IBM
Lenngren - PowerEdge 1850, 3.2 GHz, Infiniband
                    Dell EMC
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
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
Atipa Cluster, Opteron, Myrinet
                    Atipa Technology
Atipa Cluster, Opteron, Myrinet
                    Atipa Technology
AlphaServer SC45, 1 GHz
                    HPE
eServer pSeries 655 (1.5 GHz Power4+)
                    IBM
eServer pSeries 655 (1.5 GHz Power4+)
                    IBM
Cray X1E
                    Cray/HPE
Cray X1E
                    Cray/HPE
BladeCenter HS20 Xeon 3.06 GHz, Gig-Ethernet
                    IBM
glacier - BladeCenter Xeon 3.06 GHz, Gig-Ethernet
                    IBM
BladeCenter HS20 Cluster, Xeon 3.2 GHz, GigEthernet
                    IBM
BladeCenter HS20 Xeon 3.06 GHz, Gig-Ethernet
                    IBM
BladeCenter HS20 Cluster, Xeon EM64T 3.6 GHz - Gig-Ethernet
                    IBM
BladeCenter HS20 Xeon 3.06 GHz, Gig-Ethernet
                    IBM
BladeCenter HS20 Cluster, Xeon EM64T 3.4 GHz - Gig-Ethernet
                    IBM
xSeries Xeon 3.06 GHz - Gig-E
                    IBM
xSeries Xeon 3.06 GHz - Gig-E
                    IBM
xSeries Xeon 3.06 GHz - Gig-E
                    IBM
BladeCenter HS20 Cluster, Xeon 3.2 GHz, GigEthernet
                    IBM
BladeCenter HS20 Cluster, Xeon 3.2 GHz, GigEthernet
                    IBM
BladeCenter Xeon 3.06 GHz, Gig-Ethernet
                    IBM
BladeCenter Xeon 3.06 GHz, Gig-Ethernet
                    IBM
xSeries Cluster Xeon 3.06 GHz - Gig-E
                    IBM
xSeries Cluster Xeon 3.06 GHz - Gig-E
                    IBM
xSeries Xeon 3.06 GHz - Gig-E
                    IBM
bwr1 - Cluster Platform 3000 DL140G3 Xeon 3.06 GHz GigEthernet
                    HPE
pSeries 690 Turbo 1.3 GHz
                    IBM