CHIE-2
SoftBank Corp. runs CHIE-2 as part of the roughly 4,000 Hopper GPUs it added to its AI computing platform in October 2024, used first by subsidiary SB Intuitions to train Japanese-language large language models.
What it runs and how to get time
From the operator- Used for What the operator says the system is used for: science domains, missions or workloads. Taken from the operator, its funder or the system vendor, not from TOP500.
- Training Japanese-language large language models at SB Intuitions, plus compute for generative AI developers 3
- How to get time How researchers or customers get time on the system, naming the allocation programme where the operator states one.
- Used internally and offered as infrastructure as a service to companies and research institutions in Japan 3
- Upgrade or successor Announced upgrade, expansion, successor or retirement plan, with dates where the operator gives them.
- DGX B200 SuperPOD to be added in FY2024-FY2025, taking the platform to about 10,000 GPUs, with a later target of 25.7 exaflops 3
Benchmark and hardware
Source per value- Rank Position in the TOP500 edition named in the Edition column. Historic systems keep the rank of the edition where they last appeared.
- 30 1
- Rmax PFLOP/s Measured double-precision LINPACK (HPL) performance of the listed configuration. Older TFLOP/s and GFLOP/s figures are converted to PFLOP/s.
- 89.78 1
- Rpeak PFLOP/s Theoretical peak double-precision performance of the listed configuration. This is not AI or mixed-precision throughput.
- 138.32 1
- HPL efficiency % Rmax divided by Rpeak: the share of theoretical peak the system delivered on LINPACK. Computed from the two sourced figures.
- 64.9 1
- Site Host or operator named by TOP500 for the installation.
- SoftBank Corp. 1
- Country Country or region reported by TOP500 for the site.
- Japan 1
- Region World region of the installation country (grouping applied by this site).
- Asia-Pacific 1
- Vendor Manufacturer or system supplier exactly as submitted to TOP500.
- Nvidia 1
- Vendor group Supplier grouped for filtering. Bull is the Eviden/Atos line; Other covers single-system suppliers.
- NVIDIA 1
- System model Hardware platform in the cited TOP500 edition.
- NVIDIA DGX H100 1
- Processor CPU description in the cited TOP500 edition; clock and core count refer to the processor model.
- Xeon Platinum 8480C 56C 2GHz 1
- Accelerator Accelerator model listed for the system. Empty when TOP500 lists none.
- NVIDIA H100 1
- Accelerator vendor Maker of the accelerator. None listed means TOP500 names no accelerator for the system.
- NVIDIA 1
- Interconnect Network fabric exactly as listed in the cited TOP500 edition.
- Infiniband NDR400 1
- Fabric Interconnect family derived from the listed interconnect (grouping applied by this site).
- InfiniBand 1
- Cores cores Total cores submitted to TOP500, including accelerator cores where TOP500 counts them. Not a CPU-only count and not a CUDA-core count.
- 297,840 1
- Installed Installation year reported in the TOP500 system record. Not necessarily the year of production acceptance.
- 2024 2
- Edition TOP500 edition (YYYY-MM) that supplies the ranking and benchmark data. A historic edition does not assert current operating status.
- 2026-06 1
- OS Operating system from the TOP500 system record.
- Ubuntu 22.04.4 LTS 2
- TOP500 record Link to the TOP500 database record for this exact submission.
- https://www.top500.org/system/180329/ 2
Sources
- TOP500 list, June 2026 accessed 2026-11-11
- TOP500 system record accessed 2026-11-11
- SoftBank Corp. Installs Approximately 4,000 NVIDIA Hopper GPUs in Its Japan Top-level AI Computing Platform accessed 2026-11-11