Companies/RIKEN
Kobe, Japan
RIKEN
Operator of Fugaku and, previously, the K computer.
Systems this company appears in
- Systems
- 2
- Aggregate Rmax
- 461.8 PFlop/s
- Aggregate power
- 29.90 MW
- First appearance
- 2020-06
- Most recent
- 2026-06-19
- Concentration
- 96%
systems it appears in
where disclosed
largest is Fugaku
Aggregate Rmax is the sum of the systems this company supplies any part of. It is not revenue and not attributable share: an integrator and a memory vendor in the same machine both count its full FLOPS here. Attribution weighted by role is Phase 4.
Role breakdown
| Role | Systems | Rmax in those systems |
|---|---|---|
| Cooling | 1 | 19.80 PFlop/s |
| Operating system | 1 | 442.0 PFlop/s |
Appearances
| System | Supplied as | Shipped under | Rmax | Rank |
|---|---|---|---|---|
| ROQUO Japan · 2026-06-19 | Cooling | RIKEN | 19.80 PFlop/s | unranked |
| Fugaku Japan · 2020-06 | Operating system | RIKEN | 442.0 PFlop/s | #54 November 2023 → |
Parts supplied
| Part | Category | Generation | Released |
|---|---|---|---|
| McKernel | Operating systems | McKernel | 2016 |
AI datacenters operated
Figures come from the AI datacenter metrics; blank means none recorded.
Quantum computers operated
- Reimei (Trapped ion, operational, 20 qubits)
- RIKEN IBM Quantum System Two (Superconducting, operational, 156 qubits)
- RIKEN Fujitsu 256-qubit (Superconducting, operational, 256 qubits)
- RIKEN 64-Qubit System (Superconducting, operational, 64 qubits)
- RIKEN-Fujitsu 64-Qubit System (Superconducting, operational, 64 qubits)
Sites operated
| Site | Location | Cooling | Commissioned |
|---|---|---|---|
| RIKEN Center for Computational Science | Kobe, Japan | Direct liquid cooling (warm water) | 2010 |
| RIKEN Wako Campus | Wako, Saitama, Japan | - | - |