Slovenia · operational · mixed

Vega

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: 1263 of 1345 systems have a readable citation that names them, and 56 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: 6.92 PFlop/s
Rpeak: 10.05 PFlop/s
Rmax ÷ Rpeak: 68.8%
Cores: -
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	- Atos BullSequana XH2000	Eviden ATOEPA rolls up to Atos	-	Reported	izum.si eurohpc-ju.europa.eu
Accelerator	NVIDIA A100 SXM4 40GB Accelerators CUDA (Ampere GA100) · 6,912C · 1.41 GHz · 7 nm · 400 W NVIDIA A100 SXM4 40 GB	NVIDIA NVDANASDAQ	-	Reported	izum.si eurohpc-ju.europa.eu
CPU	AMD EPYC 7H12 (Rome, high frequency) CPUs x86-64 · 64C · 2.6 GHz · 7 nm · 280 W AMD EPYC 7H12 64C 2.6GHz	AMD AMDNASDAQ	-	Reported	izum.si eurohpc-ju.europa.eu
Interconnect	NVIDIA InfiniBand HDR Interconnect Fat tree or dragonfly+ · 200 Gb/s per port · About 0.6 microseconds Infiniband HDR	NVIDIA NVDANASDAQ	-	Reported	izum.si eurohpc-ju.europa.eu
Storage	Lustre Storage Parallel filesystem, separate metadata and object servers HPST contains 10 DDN ES400NVX Building Blocks usable Lustre capacity around 1PByte	DDN	-	Reported	izum.si
Storage	Ceph Storage Distributed object storage, erasure-coded pools LCST contains 61 Supermicro SuperStorage servers at least 19PB of usable Ceph storage	Supermicro SMCINASDAQ	-	Reported	izum.si
Cooling	Direct liquid cooling, warm water Cooling Direct-to-chip cold plates, facility water loop · Removes 90+ percent of node heat to liquid BullSequana XH2000: direct liquid cooled platform	Eviden ATOEPA rolls up to Atos	-	Reported	izum.si eurohpc-ju.europa.eu
Operating system	Red Hat Enterprise Linux Operating systems Linux distribution · Open source, commercial support subscription Compute nodes Operating system Red Hat Enterprise Linux 8	Red Hat IBMNYSE rolls up to IBM	-	Reported	izum.si

The read

The first EuroHPC petascale system to enter service, and the smallest system carried here. It is included deliberately: a directory that only covers the top of the list reproduces the incumbent's blind spot, and the mid-range is where most European public compute actually sits.

Timeline

2020 Announced source
2021-04 First operational source
2021-06 List debut at #106 (June 2021) source

Public list appearances

Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.

#106: TOP500, June 2021 →

Site & facility

IZUM, Maribor

Location: Maribor, Slovenia
Cooling: Direct liquid cooling
Commissioned: 2021

izum.si

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
eurohpc-ju.europa.eu	does not name this system	-
izum.si	names system only	-

Checked 2026-10-13 by pnpm verify. Re-run it and the table changes with the web.