ABCI-Q node architecture
ABCI-Q is operated by National Institute of Advanced Industrial Science and Technology (AIST) in Japan. This profile covers Ranked system / partition. Specifications are listed below; anything the operator has not published is itemised in the documented-fields list.
Published benchmark (TOP500 · June 2026)
- HPL rank
- #38
- HPL Rmax
- 74.58 PFlop/s
- Theoretical peak Rpeak
- 99.35 PFlop/s
- Ranked core count
- 315,120
- Measured power
- 1834 kW
- Energy efficiency
- 40.67 GFlop/s per watt
Cluster · Supermicro SYS-221GE-TNHT-LCC · public profile
- Operator / site
- National Institute of Advanced Industrial Science and Technology (AIST)
- Country
- Japan
- Profile scope
- Ranked system / partition
- Data checked
- 14 September 2026
- Manufacturer
- Fujitsu
- Ranked core count
- 315120
- Theoretical peak (PFlop/s)
- 99.35
- Measured power (kW)
- 1834
- Energy efficiency (GFlop/s per watt)
- 40.665212649945474
- Operating system
- Rocky Linux 9.4
Supermicro SYS-221GE-TNHT-LCC · public profile
- System / node model
- Supermicro SYS-221GE-TNHT-LCC
- CPU model
- Intel Xeon Platinum 8558 48C 2.1GHz
- CPU sockets per node
- 2
- Cores per socket
- 48
- Physical CPU cores
- 96
- Accelerator model
- NVIDIA H100 SXM5 80GB
- Physical accelerators per node
- 4
- Host / unified memory
- 1 TB DDR5-5200
- Accelerator memory
- 80 GB HBM3 per GPU
- Network interfaces per node
- 2
- Interface model
- InfiniBand NDR200
- Interface speed
- 400 Gb/s per adapter (operator listing)
- Local storage
- 2 × 3.84 TB NVMe SSD
Scope and uncertainty
Per-node specification follows the AIST G-QuAT system guide. AIST does not publish a compute-node count for the ranked partition, so none is recorded.
Documented fields: 19 / 29
Every field this catalog checks. Fields listed above have a value; the remainder are shown here. A field marked absent is not publicly available in the sources we could verify, which does not mean the hardware is missing. Fields that cannot apply, such as benchmark results for an unranked system, are excluded from the total.
Cluster — 6 / 7
- ✓Manufacturer
- ✓Ranked core count
- ✓Theoretical peak (PFlop/s)
- ✓Measured power (kW)
- ✓Energy efficiency (GFlop/s per watt)
- ✓Operating system
- ✕Network topology
Supermicro SYS-221GE-TNHT-LCC · public profile — 13 / 22
- ✓System / node model
- ✕Compute nodes of this type
- ✓CPU model
- ✓CPU sockets per node
- ✓Cores per socket
- ✓Physical CPU cores
- ✕CPU note
- ✓Accelerator model
- ✓Physical accelerators per node
- ✓Host / unified memory
- ✓Accelerator memory
- ✕Accelerator ↔ accelerator link
- ✕On-node fabric
- ✕CPU ↔ accelerator link
- ✓Network interfaces per node
- ✓Interface model
- ✓Interface speed
- ✕Interface-to-accelerator topology
- –Aggregate scale-out per node
- ✕GPUDirect RDMA
- ✕Management / storage networking
- ✓Local storage
- –NVMe data disks
- –Max remote data disks
- –Uncached disk IOPS
- –Uncached disk throughput (MBps)
- ✕Form factor
Sources
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