Supercomputers/Systems/Dragão
Brazil · operational · hpc
Dragão
Operated by Petrobras .
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
- 8.98 PFlop/s
- Rpeak
- 14.01 PFlop/s
- Rmax ÷ Rpeak
- 64.1%
- Cores
- 188,224
- Power
- 943.12 kW
- Per watt
- 9.5 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 (listed by TOP500 as Bull) | Atos | - | Reported | baguete.com.brtop500.org |
| Accelerator | NVIDIA Tesla V100 Accelerators CUDA (Volta GV100) · 5,120C · 1.53 GHz · 12 nm · 300 W NVIDIA Tesla V100 | NVIDIA | - | Reported | top500.org |
| CPU | - Intel Xeon Gold 6230R 26C 2.1GHz | Intel | - | Reported | top500.org |
| Interconnect | Mellanox InfiniBand EDR Interconnect Fat tree · 100 Gb/s per 4x port · About 0.9 microseconds Infiniband EDR | NVIDIA | - | Reported | top500.org |
| Operating system | CentOS Operating systems Linux distribution, RHEL-compatible rebuild · Open source, community-maintained CentOS Linux 7 | The CentOS Project | - | Reported | top500.org |
The read
Petrobras's seismic-imaging supercomputer, implemented by Atos from the second half of 2021 for pre-salt subsurface imaging and billed as the largest system in Brazil at launch, ahead of the company's older Atlas and Fenix. TOP500 lists it as a Bull system with Xeon Gold 6230R 26C 2.1GHz hosts, NVIDIA Tesla V100 accelerators and InfiniBand EDR under CentOS 7, with 188,224 cores, Rmax 8.98 PFlop/s, Rpeak 14.01 PFlop/s and 943 kW. Its best TOP500 rank was 46th on the June 2021 list, and it was still listed in June 2026 at 206th. The Baguete report gives R$100 million of investment and 200 TB of RAM but no GPU count, so no quantity is recorded. Petrobras's later Harpia and Pegasus systems sit alongside it; the installation site is not stated, so it is left unlocated.
Timeline
Public list appearances
Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.
Change history
- 2026-10-02 Added Dragao, the Petrobras seismic-imaging system, 46th on the June 2021 TOP500
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 |
|---|---|---|
| top500.org | names system and part | NVIDIA Tesla V100, Mellanox InfiniBand EDR, CentOS |
| baguete.com.br | does not name this system | - |
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.