Supercomputers/Systems/Tokyo-1
Japan · operational · ai training
Tokyo-1
Operated by Xeureka .
Phase 1 seed dataset, compiled by hand. These rows were built from public operator, laboratory and vendor sources. A mechanical second-reader pass has since fetched every cited source: 1092 of 1153 systems have a readable citation that names them, and 40 are genuinely weakly sourced. Every claim carries its source and a confidence tier. Treat anything below verified as a lead, not a citation.
Measured performance
- Rmax
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- Rpeak
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- Rmax ÷ Rpeak
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- Cores
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- Power
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- Per watt
- - GF/W
Figures are as last publicly reported for the configuration described below, not a live measurement. Where a system was upgraded in place, the post-upgrade configuration is shown and the earlier one appears in the timeline.
What this machine is made of
One row per supplier relationship. “Supplier at build” is the company that shipped the part at the time; where that company has since been acquired, the parent it rolls up to today is shown beside it. That distinction is what makes ticker-level aggregation possible across a thirty-year dataset.
| Role | Part | Supplier at build | Quantity | Confidence | Source |
|---|---|---|---|---|---|
| Integrator | - 16 NVIDIA DGX H100 systems | NVIDIA | 16 verified | Verified | blogs.nvidia.compharmaphorum.com |
| Accelerator | NVIDIA H100 SXM5 Accelerators CUDA (Hopper GH100) · 16,896C · 1.98 GHz · TSMC 4N · 700 W 128 NVIDIA H100 Tensor Core GPUs (16 DGX H100 systems, 8 GPUs each) at launch | NVIDIA | 128 reported | Reported | blogs.nvidia.com |
The read
Japan's first generative-AI supercomputer for the pharmaceutical industry, operated by Mitsui & Co. subsidiary Xeureka and announced with NVIDIA at GTC in March 2023 as 16 NVIDIA DGX H100 systems (128 H100 GPUs), with Xeureka planning to add nodes as the project grows. Astellas Pharma, Daiichi Sankyo and Ono Pharmaceutical were named as launch users, for molecular dynamics, quantum chemistry and generative molecular design. NVIDIA's blog and pharmaphorum agree on the 16-DGX-H100 design; the 128-GPU total is NVIDIA's own figure (16 systems of 8 GPUs). Xeureka states it began full-scale operation on 1 February 2024, hence the first-operational date. Xeureka has not disclosed the data centre, current node count after expansion, or any HPL result, so site and FLOPS are left blank.
Change history
- 2026-10-01 Added Tokyo-1 (Xeureka, Japan)
Source check
We fetched this system's own citations and recorded whether each page actually mentions it. This is a corroboration signal, not a fact check, and it is published so you can see how well the sourcing holds up rather than take it on trust.
| Cited source | Result | Found on the page |
|---|---|---|
| blogs.nvidia.com | names system and part | NVIDIA H100 SXM5 |
| pharmaphorum.com | names system and part | NVIDIA H100 SXM5 |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.