Supercomputers/Systems/Gemini (Petrobras)
Brazil · operational · hpc
Gemini (Petrobras)
Also known as Gemini
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
- 3.86 PFlop/s
- Rpeak
- 6.86 PFlop/s
- Rmax ÷ Rpeak
- 56.3%
- Cores
- 42,240
- Power
- 287 kW
- Per watt
- 13.4 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 | - | Reported | top500.org |
| Accelerator | - NVIDIA A100 (variant not specified) | NVIDIA | - | Reported | top500.org |
| CPU | - AMD EPYC 74F3 24C 3.2GHz | AMD | - | Reported | top500.org |
The read
Petrobras's Dell PowerEdge XE8545 cluster of AMD EPYC 74F3 (24-core, 3.2 GHz) CPUs with NVIDIA A100 GPUs on InfiniBand, 42,240 cores at 3.86 PFlop/s Rmax and 6.86 PFlop/s Rpeak on 287 kW. Petrobras's own article independently says Gemini delivers 3.9 PFlop/s FP64, entered operation in August 2023 and serves geophysical processing and algorithm development. First listed at rank 165 on the June 2023 list and at rank 362 on June 2026. Petrobras's article does not state the machine's location; the Cenpes site is assumed from the other Petrobras systems it describes alongside Gemini, and should be treated as likely rather than confirmed.
Timeline
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
- 2026-10-02 Added Gemini, Petrobras's Dell A100 cluster, 165th on the June 2023 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 |
|---|---|---|
| agencia.petrobras.com.br | could not be fetched | - |
| top500.org | names system only | - |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.