USA · decommissioned · hpc

Stampede2

Operated by Texas Advanced Computing Center at Texas Advanced Computing 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: 10.68 PFlop/s
Rpeak: 18.31 PFlop/s
Rmax ÷ Rpeak: 58.3%
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	- PowerEdge C6320P	Dell Technologies DELLNYSE	-	Reported	tacc.utexas.edu tacc.utexas.edu
Accelerator	Intel Xeon Phi 7250 (Knights Landing) Accelerators Intel Xeon Phi 7250 68C 1.4GHz	Intel INTCNASDAQ	-	Reported	tacc.utexas.edu tacc.utexas.edu
Interconnect	Omni-Path Architecture Interconnect Intel Omni-Path	Intel INTCNASDAQ	-	Reported	tacc.utexas.edu tacc.utexas.edu

The read

Dell-integrated and Omni-Path-connected, which together describe a segment of the market that the leadership-class systems obscure: most academic compute is bought from volume server vendors on merchant fabrics, not from Cray or IBM. Omni-Path itself left Intel in 2020 and is now carried by Cornelis Networks.

Timeline

2016 Announced source
2017-06 List debut at #12 (June 2017) source
2017-06 First operational source
2022 Decommissioned source

Public list appearances

Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.

#12: TOP500, June 2017 →

Site & facility

Texas Advanced Computing Center

Location: Austin, TX, USA
Cooling: Direct liquid cooling
Commissioned: 2007

tacc.utexas.edu

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
tacc.utexas.edu	names system only	-
tacc.utexas.edu	names system and part	Intel Xeon Phi 7250 (Knights Landing), Omni-Path Architecture

Checked 2026-09-08 by pnpm verify. Re-run it and the table changes with the web.