Roadrunner - BladeCenter QS22/LS21 Cluster, PowerXCell 8i 3.2 Ghz / Opteron DC 1.8 GHz, Voltaire Infiniband
                    IBM
BlueGene/L - eServer Blue Gene Solution
                    IBM
Kraken XT5 - Cray XT5 QC 2.3 GHz
                    Cray/HPE
Intrepid - Blue Gene/P Solution
                    IBM
Ranger - SunBlade x6420, Opteron Quad 2Ghz, Infiniband
                    Oracle
Jaguar - Cray XT4 QuadCore 2.1 GHz
                    Cray/HPE
JUGENE - Blue Gene/P Solution
                    IBM
Encanto - SGI Altix ICE 8200, Xeon quad core 3.0 GHz
                    HPE
EKA - Cluster Platform 3000 BL460c, Xeon 53xx 3GHz, Infiniband
                    HPE
Blue Gene/P Solution
                    IBM
SGI Altix ICE 8200EX, Xeon quad core 3.0 GHz
                    HPE
Cluster Platform 3000 BL460c, Xeon 53xx 2.66GHz, Infiniband
                    HPE
Red Storm - Sandia/ Cray Red Storm, Opteron 2.4 GHz dual core
                    Cray/HPE
Frontier2 BG/L - Blue Gene/P Solution
                    IBM
BGW - eServer Blue Gene Solution
                    IBM
Franklin - Cray XT4, 2.6 GHz
                    Cray/HPE
T2K Open Supercomputer (Todai Combined Cluster) - Hitachi Cluster Opteron QC 2.3 GHz, Myrinet 10G
                    Hitachi
New York Blue - eServer Blue Gene Solution
                    IBM
Power 575, p6 4.7 GHz, Infiniband
                    IBM
VIP - Power 575, p6 4.7 GHz, Infiniband
                    IBM
T2K Open Supercomputer - Appro Xtreme-X3 Server - Quad Opteron Quad Core 2.3 GHz, Infiniband
                    Cray/HPE
ASC Purple - eServer pSeries p5 575 1.9 GHz
                    IBM
eServer Blue Gene Solution
                    IBM
Abe - PowerEdge 1955, 2.33 GHz, Infiniband, Windows Server 2008/Red Hat Enterprise Linux 4
                    Dell EMC
TSUBAME Grid Cluster with CompView TSUBASA - Sun Fire x4600/x6250 Cluster, Opteron 2.4/2.6 GHz and ClearSpeed Accelerator, Xeon E5440  2.833 GHz, Infiniband
                    NEC/Sun
Columbia - SGI Altix 1.5/1.6/1.66 GHz, Voltaire Infiniband
                    HPE
MareNostrum - BladeCenter JS21 Cluster, PPC 970, 2.3 GHz, Myrinet
                    IBM
HLRB-II - Altix 4700 1.6 GHz
                    HPE
Jade - Cray XT4 QuadCore 2.1 GHz
                    Cray/HPE
HECToR - Cray XT4, 2.8 GHz
                    Cray/HPE
bluefire - Power 575, p6 4.7 GHz, Infiniband
                    IBM
Thunderbird - PowerEdge 1850, 3.6 GHz, Infiniband
                    Dell EMC
Tera-10 - NovaScale 5160, Itanium2 1.6 GHz, Quadrics
                    Atos
Hawk - Altix 4700 1.6 GHz
                    HPE
T2K Open Supercomputer/Kyodai - Fujitsu Cluster HX600, Opteron Quad Core, 2.3 GHz, Infiniband
                    Fujitsu
Power 575, p6 4.7 GHz, Infiniband
                    IBM
SKIF MSU - T-Platforms T60, Intel Quadcore 3Ghz, Infiniband DDR
                    SKIF/T-Platforms
Blue Gene/P Solution
                    IBM
Lonestar - PowerEdge 1955, 2.66 GHz, Infiniband
                    Dell EMC
Akka - BladeCenter HS21 Cluster, Xeon QC HT 2.5 GHz, IB, Windows HPC 2008/CentOS
                    IBM
Cluster Platform 3000 DL140 Cluster, Xeon 2.33GHz Infiniband
                    HPE
Jaws - PowerEdge 1955, 3.0 GHz, Infiniband
                    Dell EMC
CEA-CCRT-Platine - Novascale 3045, Itanium2 1.6 GHz, Infiniband
                    Atos
Michael J. Muuss Cluster (MJM) - Evolocity II (LS Supersystem) Xeon 51xx 3.0 GHz IB
                    Linux Networx
R Smarr - Dell DCS CS23-SH, QC HT 2.8 GHz, Infiniband
                    Dell EMC
Galera - ACTION Cluster Xeon E5345 Infiniband
                    ACTION
JUBL - eServer Blue Gene Solution
                    IBM
Cray XT4 QuadCore 2.3 GHz
                    Cray/HPE
Atlas - Appro Xtreme Server - Quad Opteron Dual Core 2.4GHz Infiniband
                    Cray/HPE
Earth-Simulator
                    NEC
Sapphire - Cray XT3, 2.6 GHz dual Core
                    Cray/HPE
Blue Gene/P Solution
                    IBM
Genius - Blue Gene/P Solution
                    IBM
BladeCenter HS21 Cluster, Xeon QC HT 3 GHz, Infiniband
                    IBM
Queen Bee - PowerEdge 1950, 2.33 GHz, Infiniband
                    Dell EMC
Cray XT3, 2.6 GHz dual Core
                    Cray/HPE
Cluster Platform 3000 BL460c, Xeon 53xx 3GHz, Infiniband
                    HPE
Kraken - Cray XT3, 2.6 GHz dual Core
                    Cray/HPE
ATLAS - Pyramid Cluster Xeon QC 32xx 2.4 GHz, GigEthernet
                    Pyramid Computer
SGI Altix ICE 8200, 2.66 GHz
                    HPE
Odyssey - PowerEdge M600 Cluster, Xeon E5410 2.3Ghz, Infiniband
                    Dell EMC
Stallo - Cluster Platform 3000 BL460c, Xeon 53xx 2.66GHz, GigEthernet
                    HPE
Palmetto - PowerEdge 1950, Quad Core 2.33 GHz, Myrinet 10G
                    Dell EMC
HPC - PowerEdge 1950, Quad Core 3.2 GHz, Myrinet 10G
                    Dell EMC
Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet
                    HPE
BladeCenter HS21 Cluster, Xeon QC HT 2.83 GHz, Infiniband
                    IBM
BlueCrystal - xSeries x3450 Cluster Xeon quad core, 2.8 GHz, Infiniband
                    ClusterVision/IBM
Topsail - PowerEdge 1955, 2.33 GHz, Cisco/Topspin Infiniband
                    Dell EMC
Stella - eServer Blue Gene Solution
                    IBM
Minos - Appro Xtreme Server - Quad Opteron Dual Core 2.4GHz Infiniband
                    Cray/HPE
Cray XT4 QuadCore 2.3 GHz
                    Cray/HPE
SGI Altix ICE 8200EX, Xeon quad core 3.0 GHz
                    HPE
SGI Altix ICE 8200EX, Xeon quad core 3.0 GHz
                    HPE
Power 575, p6 4.7 GHz, Infiniband
                    IBM
Blue Gene/P Solution
                    IBM
New York Blue - Blue Gene/P Solution
                    IBM
Cray XT4 QuadCore 2.2 GHz
                    Cray/HPE
CITerra - PowerEdge 1950, 2.33 GHz, Myrinet
                    Dell EMC
Endeavor - Intel Cluster, Xeon E54xx, 2.8 GHz, Infiniband
                    Intel
Big Red - BladeCenter JS21 Cluster, PPC 970, 2.5 GHz, Myrinet
                    IBM
Firefly - PowerEdge SC1435 Dual core Opteron 2.8 GHz, Infiniband
                    Dell EMC
Cluster Platform 3000 BL460c, Xeon 51xx 3.0GHz, Infiniband DDR
                    HPE
Cluster Platform 6000 rx1620, Itanium2 1.6 GHz, Quadrics
                    HPE
eServer pSeries p5 575 1.9 GHz
                    IBM
eServer pSeries p5 575 1.9 GHz
                    IBM
BladeCenter JS21 Cluster, PPC 970, 2.5 GHz, Myrinet
                    IBM
Power 575, p6 4.7 GHz, Infiniband
                    IBM
Cray XT5 QC 2.3 GHz
                    Cray/HPE
Merlin - Novascale R422 Cluster, Xeon E5472, 3.00 GHz, Infiniband
                    Atos
Thunder - Intel Itanium2 Tiger4  1.4GHz - Quadrics
                    California Digital Corporation
BladeCenter HS21 Cluster, Xeon dual core 3.0 GHz, Infiniband
                    IBM
xSeries x3550 Cluster Xeon, 3 GHz, Infiniband
                    IBM
Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet
                    HPE
Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet
                    HPE
Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet
                    HPE
Cluster Platform 3000 BL460c, Xeon 54xx 3.0GHz, GigEthernet
                    HPE
NOW Cluster - Intel Xeon 53xx, 2.33 GHz, GigEthernet
                    Self-made
SGI Altix ICE 8200, 3.0 GHz
                    HPE
BladeCenter HS21 Cluster, Xeon QC HT 2.83 GHz, Infiniband
                    IBM
PowerEdge 1950, Xeon 51xx 3.06 GHz, Infinipath
                    ClusterVision/Dell