Supercomputers/Systems/Mimer AI Factory
Sweden · under construction · ai training
Mimer AI Factory
Operated by NAISS at NAISS (Linkoping University) .
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
- -
- Rpeak
- -
- Rmax ÷ Rpeak
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- Cores
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- 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 | - BullSequana XH3500 AI-optimised system | Bull | - | Reported | naiss.seeurohpc-ju.europa.eu |
| Accelerator | - 100 GB200 NVL4 nodes with 400 NVIDIA GPUs | NVIDIA | 400 reported | Reported | naiss.senvidianews.nvidia.com |
| Storage | - IBM ESS6000 storage connected through S3 gateway servers | IBM | - | Reported | naiss.se |
AI datacenter metrics
Figures beyond an accelerator count, each with who stated it. What can and cannot be compared across AI datacenters.
| Metric | Value | As of | Basis | Note | Source |
|---|---|---|---|---|---|
| Accelerators | 400 accelerators | 2026-04 | Design target | NAISS/EuroHPC release 2026-04-21: 100 GB200 nodes, 400 GPUs. System ordered, not yet installed. | naiss.se |
The read
The dedicated supercomputer of Sweden's EuroHPC AI Factory (Mimer), hosted by NAISS at Linkoping University. Bull was contracted on 21 April 2026 for a EUR 29.76 million system, split evenly between EuroHPC JU and the Swedish Research Council, and NAISS states installation is scheduled for later in 2026. NAISS lists 100 BullSequana XH3500 GB200 nodes with 400 NVIDIA GPUs on 400 Gbit/s Ethernet (Nokia 7220 switches) with IBM ESS6000 storage behind S3 gateways; NVIDIA's June 2026 announcement independently gives 400 GPUs and 100 GB200 NVL4 systems and up to 4 EFlop/s of AI training performance. NVIDIA describes it as in development and no commissioning was confirmed as of the status date. No HPL figures are published.
Timeline
- 2026-04 Announced source
Site & facility
Change history
- 2026-10-01 Added Mimer AI Factory (NAISS)
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 |
|---|---|---|
| nvidianews.nvidia.com | names system only | - |
| naiss.se | names system only | - |
Checked 2026-10-09 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.
Storage and I/O
Parallel file systems, why checkpointing dominates the write load, and the metadata failure mode nobody expects.