Supercomputers/Systems/SAKURAONE CYD
Japan · operational · mixed
SAKURAONE CYD
Operated by SAKURA internet at SAKURA internet (Ishikari) .
Researched with AI assistance, checked by scripts. These rows were researched by AI agents reading public operator, laboratory and vendor sources, appended by scripts and checked by automated validation; no subject-matter expert has reviewed them (how this site is made). A mechanical second-reader pass has since fetched every cited source: 1350 of 1540 systems have a readable citation that names them, and 64 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
- 37.79 PFlop/s
- Rpeak
- 43.18 PFlop/s
- Rmax ÷ Rpeak
- 87.5%
- Cores
- 185,920
- Power
- -
- 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 | - Supermicro SuperServer B200 | Supermicro | - | Reported | top500.orgsakura.ad.jp |
| Accelerator | NVIDIA B200 SXM Accelerators CUDA (Blackwell) · TSMC 4NP · 1,000 W NVIDIA B200 SXM 180 GB | NVIDIA | - | Reported | top500.org |
| CPU | Intel Xeon 6 6900P (Granite Rapids) CPUs x86-64 · 128C · 2 GHz · Intel 3 · 500 W Intel Xeon 6960P 72C 2.7 GHz | Intel | - | Reported | top500.org |
| Operating system | Rocky Linux Operating systems RHEL-compatible Linux, community-maintained · Downstream rebuild of Red Hat Enterprise Linux source Rocky Linux 9.6 | Rocky Enterprise Software Foundation | - | Reported | top500.org |
The read
The largest SAKURAONE entry so far, new on the June 2026 TOP500 at 63rd (list full for our table, so no list row). TOP500 lists SAKURAONE CYD as a Supermicro SuperServer B200 with Intel Xeon 6960P 72C 2.7 GHz and NVIDIA B200 SXM 180 GB under 'SAKURA Internet Inc. / Prunus Solutions Inc.', installed 2026, running Rocky Linux 9.6, with 185,920 cores, Rmax 37.79 and Rpeak 43.18 PFlop/s and HPCG 1,076.97 TFlop/s; TOP500 gives its System URL as SAKURA's one.sakura.ad.jp, which redirects to the SAKURAONE managed-HPC page. That page lists only a 48-node B200 partition (384 GPUs, 6,912 CPU cores), far too small for a 43.18 PFlop/s peak (roughly 38 TFlop/s FP64 per B200 would need over 1,000 GPUs), so CYD is evidently a larger B200 deployment than the public service partition (our inference; no source states the node count). Earlier siblings are sakuraone (H100), sakuraone-cyc (H200) and sakuraone-cyb (B200).
Timeline
- 2026 First operational source
Site & facility
Change history
- 2026-10-17 Added SAKURAONE CYD
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 |
|---|---|---|
| sakura.ad.jp | names system and part | NVIDIA B200 SXM, Intel Xeon 6 6900P (Granite Rapids) |
| top500.org | names system and part | NVIDIA B200 SXM, Intel Xeon 6 6900P (Granite Rapids), Rocky Linux |
Checked 2026-10-18 by pnpm verify. Re-run it and the table changes with the web.
Further reading
Operating a supercomputer
Acceptance testing, why "installed" and "in production" are six months apart, and the machine lifecycle.
Inside a node
Why accelerators exist, what the memory hierarchy costs, and how the CPU and accelerator merged onto one package.
Programming a supercomputer
The software stack beneath the application, and why the OS is now a sovereignty signal as much as a technical choice.