Supercomputers/Systems/MareNostrum 5 ACC
Spain · operational · mixed
MareNostrum 5 ACC
Also known as MN5
Operated by Barcelona Supercomputing Center at Barcelona Supercomputing Center .
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: 32 of 52 systems have a readable citation that names them, and 4 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
- 138.2 PFlop/s
- Rpeak
- 265.6 PFlop/s
- Rmax ÷ Rpeak
- 52.0%
- 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 | - Eviden BullSequana XH3000 | Eviden | - | Reported | bsc.eseurohpc-ju.europa.eu |
| Accelerator | NVIDIA H100 SXM5 Accelerators NVIDIA H100 | NVIDIA | - | Reported | bsc.eseurohpc-ju.europa.eu |
| CPU | Intel Xeon Platinum 8460Y+ CPUs Xeon Platinum 8460Y 40C 2.3GHz | Intel | - | Reported | bsc.eseurohpc-ju.europa.eu |
| Interconnect | NVIDIA InfiniBand NDR (Quantum-2) Interconnect Infiniband NDR200 | NVIDIA | - | Reported | bsc.eseurohpc-ju.europa.eu |
| Cooling | Direct liquid cooling, warm water Cooling BullSequana XH3000: direct liquid cooled platform | Eviden | - | Reported | bsc.eseurohpc-ju.europa.eu |
| Operating system | Red Hat Enterprise Linux Operating systems Red Hat Enterprise Linux | Red Hat | - | Reported | bsc.eseurohpc-ju.europa.eu |
The read
The accelerated partition of MareNostrum 5, a EuroHPC system hosted by Barcelona. Eviden integration with Intel hosts and NVIDIA H100s - a three-vendor node in a programme explicitly intended to build European capability, which is precisely the tension the domestic-substitution index is designed to measure.
Timeline
- 2022 Announced source
- 2023-11 List debut at #8 (November 2023) source
- 2023-12 First operational source
Public list appearances
Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.
Site & facility
Barcelona Supercomputing Center
- Location
- Barcelona, Spain
- Cooling
- Direct liquid cooling
- Commissioned
- 2005
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 | - |
| bsc.es | names system and part | Direct liquid cooling, warm water, Intel Xeon Platinum 8460Y+ |
Checked 2026-09-08 by pnpm verify. Re-run it and the table changes with the web.
Further reading
Inside a node
Why accelerators exist, what the memory hierarchy costs, and how the CPU and accelerator merged onto one package.
Power and cooling
Why air ran out at 20 kW a rack, how warm-water cooling removes the chillers, and what PUE conceals.
Operating a supercomputer
Acceptance testing, why "installed" and "in production" are six months apart, and the machine lifecycle.