COMPUTE ATLAS Supercomputer supply-chain graph
1153 systems 482 sites Sourced data

Supercomputers/By country/Japan

106 systems

Japan

69 of 106 systems we track in Japan are currently running, with a combined Rmax of 1.39 EFlop/s (7.8% of the running Rmax across every country in this dataset). 27 sites here are located on the map.

RSS for Japan

22 of these areAI datacenters. 9 quantum computers are recorded here: Reimei (Trapped ion, 20 qubits), G-QuAT System F (Superconducting, 64 qubits), G-QuAT System Q (Neutral atom, 260 qubits), RIKEN IBM Quantum System Two (Superconducting, 156 qubits), University of Tokyo IBM Quantum System One (Superconducting, 127 qubits), RIKEN Fujitsu 256-qubit (Superconducting, 256 qubits), IQM Radiance 20 for TOYO at G-QuAT (Superconducting, 20 qubits), IQM Spark at TOYO R&D Center (Superconducting) and 1 more in the quantum section.

Systems

SystemOperatorRmaxStatusFirst operational
ai& Tenstorrent Galaxy Supercluster ai& - operational -
ROQUO RIKEN 19.80 PFlop/s operational 2026-06-19
KDDI GPU Cloud KDDI 22.21 PFlop/s operational 2026-01
RIKYU RIKEN - operational -
SEIRAN Tokyo University of Technology 3.32 PFlop/s operational 2025-10
OpenCanvas GPUaaS SP1 NTT DATA Japan 17.53 PFlop/s operational 2025-10
FugakuNEXT RIKEN - planned -
CHIE-4 SoftBank Corp. 135.4 PFlop/s operational 2025-07
Plasma Simulator Sosei NIFS - operational 2025-07
ABCI 3.0 AIST 145.1 PFlop/s operational 2025-06
ABCI-Q AIST 74.58 PFlop/s operational 2025-06
SoftBank Tomakomai AI Data Center SoftBank Corp. - under construction -
Miyabi JCAHPC 46.80 PFlop/s operational 2025-01
FPT AI Factory Japan FPT Corporation 49.85 PFlop/s operational 2025
GMO GPU Cloud GMO Internet Group 10.05 PFlop/s operational 2024-11
CHIE-2 SoftBank Corp. 89.78 PFlop/s operational 2024-10
Genkai RIIT, Kyushu University 6.22 PFlop/s operational 2024-10
SoftBank Sakai AI Data Center SoftBank Corp. - planned -
Tokyo-1 Xeureka - operational 2024-02
CHIE-3 SoftBank Corp. 91.94 PFlop/s operational 2024
TSUBAME4.0 Institute of Science Tokyo 39.62 PFlop/s operational 2024
HOKUSAI BigWaterfall 2 RIKEN - operational 2023-12-04
Camphor 3 Kyoto University ACCMS 6.71 PFlop/s operational 2023-10
AOBA-S Cyberscience Center, Tohoku University 17.22 PFlop/s operational 2023-08
JMA PRIMEHPC FX1000 Japan Meteorological Agency 13.37 PFlop/s operational 2023-03
Laurel 3 Kyoto University ACCMS - operational 2023
Pegasus (Tsukuba) University of Tsukuba 4.34 PFlop/s operational -
NEC AI Research Supercomputer NEC - operational 2022-05
Wisteria/BDEC-01 University of Tokyo 22.12 PFlop/s operational 2021-05
SQUID D3 Center, Osaka University 6.11 PFlop/s operational 2021-05
Earth Simulator 4 JAMSTEC 9.99 PFlop/s operational 2021-03
mdx I University of Tokyo - operational 2021
TOKI-SORA JAXA 16.59 PFlop/s operational 2020-11
Ohtaka ISSP Supercomputer Center 3.49 PFlop/s operational 2020-10
Flow Information Technology Center, Nagoya University 6.62 PFlop/s operational 2020-07
Fugaku RIKEN 442.0 PFlop/s operational 2020-06
MN-3 Preferred Networks 2.18 PFlop/s operational 2020-05
NIMS Materials Simulator NIMS 3.08 PFlop/s operational 2020-03
Raijin NIFS 7.89 PFlop/s decommissioned 2020
NA-1 PEZY Computing 1.30 PFlop/s operational 2019-11
MN-2 Preferred Networks - operational 2019-07
Cygnus University of Tsukuba 1.58 PFlop/s decommissioned 2019
Oakbridge-CX University of Tokyo 4.29 PFlop/s decommissioned 2019
A64FX Prototype Fujitsu 2.00 PFlop/s operational 2019
ABCI AIST 19.88 PFlop/s decommissioned 2018-08
AFI-NITY Institute of Fluid Science, Tohoku University 1.69 PFlop/s operational 2018-08
ATERUI II National Astronomical Observatory of Japan 2.09 PFlop/s operational 2018-06
JFRS-1 QST 2.79 PFlop/s operational 2018-06
ITO Subsystem A RIIT, Kyushu University 4.54 PFlop/s decommissioned 2018
IMS Molecular Simulator Institute for Molecular Science 1.79 PFlop/s operational 2017-10-01
TSUBAME3.0 Institute of Science Tokyo 8.13 PFlop/s decommissioned 2017-08
Gyoukou JAMSTEC 19.14 PFlop/s decommissioned 2017-06
HOKUSAI BigWaterfall RIKEN 1.60 PFlop/s operational 2017
RAIDEN RIKEN 1.21 PFlop/s operational 2017
Reedbush-H University of Tokyo 800.00 TFlop/s decommissioned 2017
Reedbush-L University of Tokyo 810.00 TFlop/s decommissioned 2017
Kukai Yahoo Japan 460.70 TFlop/s operational 2017
AIST AI Cloud AIST 961.00 TFlop/s operational 2017
Suiren2 KEK 798.00 TFlop/s operational 2017
JAIST Cray XC40 JAIST 584.77 TFlop/s decommissioned 2017
Oakforest-PACS JCAHPC 13.55 PFlop/s decommissioned 2016-10
GOSAT-2 RCF2 NIES 770.40 TFlop/s operational 2016-03
Camphor 2 Kyoto University ACCMS 3.06 PFlop/s operational 2016
Sakura (PEZY) PEZY Computing 824.70 TFlop/s operational 2016
Laurel 2 Kyoto University ACCMS 821.90 TFlop/s operational 2016
Reedbush-U University of Tokyo 459.83 TFlop/s decommissioned 2016
Sekirei (ISSP System B) ISSP Supercomputer Center 1.18 PFlop/s decommissioned 2015-07
HOKUSAI GreatWave RIKEN 990.00 TFlop/s decommissioned 2015-04
Shirokane3 University of Tokyo 342.58 TFlop/s operational 2015-04
Earth Simulator 3 JAMSTEC - decommissioned 2015
Shoubu RIKEN 610.00 TFlop/s operational 2015
Nagoya FX100 Information Technology Center, Nagoya University 2.91 PFlop/s decommissioned 2015
Plasma Simulator FX100 NIFS 2.38 PFlop/s decommissioned 2015
SORA-MA JAXA 3.16 PFlop/s operational 2015
Sango OIST 252.70 TFlop/s operational 2015
COMA (PACS-IX) University of Tsukuba 746.00 TFlop/s operational 2014-04-15
Camellia (Kyoto) Kyoto University ACCMS 380.50 TFlop/s operational 2014
TSUBAME-KFC Institute of Science Tokyo 125.20 TFlop/s upgraded 2013-10
Oakleaf-FX University of Tokyo 1.04 PFlop/s decommissioned 2012-04
Helios (IFERC) IFERC-CSC 1.24 PFlop/s decommissioned 2012
HA-PACS University of Tsukuba 421.60 TFlop/s decommissioned 2012
KEK SAKURA KEK 536.66 TFlop/s operational 2012
K computer RIKEN 10.51 PFlop/s decommissioned 2011-06
TSUBAME2.0 Institute of Science Tokyo 1.19 PFlop/s upgraded 2010-11
JSS FX1 JAXA 110.60 TFlop/s decommissioned 2009-04
Earth Simulator 2 JAMSTEC 122.40 TFlop/s decommissioned 2009-03
TSUBAME1.0 Institute of Science Tokyo 38.18 TFlop/s decommissioned 2006-04
Earth Simulator JAMSTEC 35.86 TFlop/s decommissioned 2002-03
Osaka SX-5/128M8 D3 Center, Osaka University 1.19 TFlop/s operational 2001-01
UTokyo SR8000/MPP University of Tokyo 1.71 TFlop/s decommissioned 2001
KEK SR8000-F1/100 KEK 917.0 GFlop/s decommissioned 2000-03
ISSP SR8000-F1/60 ISSP Supercomputer Center 577.0 GFlop/s decommissioned 2000-03
UTokyo SR8000/128 University of Tokyo 873.0 GFlop/s decommissioned 1999
Tohoku SX-4/128H4 Cyberscience Center, Tohoku University 244.0 GFlop/s operational 1998-01
CP-PACS University of Tsukuba 368.2 GFlop/s decommissioned 1996-10
Hitachi SR2201/1024 University of Tokyo 220.4 GFlop/s decommissioned 1996
Toyota CRDL SX-4/20 Toyota Central R&D Labs 38.7 GFlop/s operational 1996
KEK VPP500/80 KEK 98.9 GFlop/s decommissioned 1995-01
Tohoku SX-3/44R Cyberscience Center, Tohoku University 23.2 GFlop/s operational 1994-01
Numerical Wind Tunnel National Aerospace Laboratory of Japan 124.0 GFlop/s decommissioned 1993-01
UTokyo HITAC S-3800/480 University of Tokyo 28.4 GFlop/s decommissioned 1993
SAKURAONE SAKURA internet 33.95 PFlop/s operational -
Grand Chariot 2 IIC, Hokkaido University 4.38 PFlop/s operational -
Shoubu System B RIKEN 1.06 PFlop/s operational -
Cycloud ML Platform CyberAgent 10.82 PFlop/s operational -
DEGIMA Nagasaki University - operational -

Sites

Country is recorded on each system row, following where the operator is headquartered or the site is sited, not supplier nationality. See all countries or domestic substitution for how much of each country's compute is fully domestically supplied.