Supercomputers/Systems/Tupã
Brazil · decommissioned · hpc
Tupã
Also known as Tupa Cray XE6 (INPE)
Operated by INPE at INPE Cachoeira Paulista Site .
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
- 214.20 TFlop/s
- Rpeak
- 261.27 TFlop/s
- Rmax ÷ Rpeak
- 82.0%
- Cores
- 31,104
- 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 | - Cray XE6 | Cray HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | top500.org |
| CPU | - AMD Opteron 6172 12C 2.10GHz (TOP500 listing) | AMD | - | Reported | top500.org |
| Interconnect | Cray Gemini Interconnect 3D torus · About 6 GB/s per direction per link · Around 1 microsecond Cray Gemini interconnect | Cray HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | top500.org |
The read
The Cray XE6 module of INPE's Tupã supercomputer at the weather and climate forecasting centre in Cachoeira Paulista, Brazil, installed in 2010 for operational numerical weather prediction and seasonal climate forecasting. TOP500 lists 31,104 cores of Opteron 6172 12C 2.10GHz with Cray Gemini, running Cray Linux Environment, 214.20 TFlop/s Rmax and 261.27 TFlop/s Rpeak; INPE's installation first reached rank 29 on the November 2010 list (as a Cray XT6) and the XE6 was last listed at rank 477 in November 2015. A geoprocessing news report of 31 March 2025 says INPE deactivated the XE6 module to make room for a new HPE Cray system, while the separate XC50 module installed in 2017 continues operating; only the XE6 module is described here, and the exact day of shutdown is not given.
Timeline
- 2010 First operational source
- 2010-11 List debut at #29 (November 2010) source
- 2025-03 Decommissioned 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
INPE Cachoeira Paulista Site
- Location
- Cachoeira Paulista, Brazil
- Commissioned
- 2010
Change history
- 2026-10-02 Added Tupa, INPE's Cray XE6 weather supercomputer
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 |
|---|---|---|
| geocracia.com | names system only | - |
| top500.org | does not name this system | Cray Gemini |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.
Further reading
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.
Operating a supercomputer
Acceptance testing, why "installed" and "in production" are six months apart, and the machine lifecycle.