Supercomputers/Systems/Gaia
Brazil · operational · hpc
Gaia
Operated by Petrobras at Cenpes .
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
- 6.97 PFlop/s
- Rpeak
- -
- Rmax ÷ Rpeak
- -
- Cores
- 84,480
- Power
- 574 kW
- Per watt
- 12.1 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 | - Dell PowerEdge XE8545 | Dell Technologies | - | Verified | top500.orgblog.nvidia.com.br |
| Accelerator | - over 700 NVIDIA A100 80GB GPUs | NVIDIA | - | Verified | blog.nvidia.com.brtop500.org |
| CPU | - AMD EPYC 74F3 24C 3.2GHz | AMD | - | Reported | top500.org |
| Interconnect | - InfiniBand (generation not stated by TOP500) | NVIDIA | - | Reported | top500.org |
| Operating system | Red Hat Enterprise Linux Operating systems Linux distribution · Open source, commercial support subscription RHEL 7.8 | Red Hat | - | Reported | top500.org |
The read
Petrobras's research supercomputer at its Cenpes R&D centre in Rio, the company's first Dell system: Dell PowerEdge XE8545 servers with AMD EPYC 74F3 CPUs and over 700 NVIDIA A100 80GB GPUs on InfiniBand, in 19 racks, aimed at seismic imaging including least-squares and elastic full-waveform inversion. It debuted 93rd on the June 2023 TOP500 and was 248th by June 2026. Petrobras states 7.7 PFlop/s peak while TOP500 gives 13.73 PFlop/s Rpeak, so no peak is recorded and the conflict is logged. Delivery began in December 2022 with go-live expected in the first half of 2023, but no firm date was found, so it is blank. The A100 edge is verified by TOP500 and NVIDIA; Rmax, core and power figures come from TOP500 and Petrobras press, so the system tier is reported.
Timeline
- 2023-06 List debut at #93 (June 2023) 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
Change history
- 2026-10-01 Added Gaia (Petrobras)
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 |
|---|---|---|
| blog.nvidia.com.br | names system only | - |
| top500.org | 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
Latency-optimised versus throughput-optimised processors, NUMA, and the end of the host-to-device copy.
The interconnect
Topologies, why latency and tail behaviour matter more than bandwidth, and how the fabric market consolidated.