Trestles (SDSC)

Also known as SDSC Trestles

Operated by SDSC at San Diego Supercomputer 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: 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: 67.32 TFlop/s
Rpeak: 99.53 TFlop/s
Rmax ÷ Rpeak: 67.6%
Cores: 10,112
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	- Appro 1U-1143H cluster integrated with SDSC	Appro HPENYSE rolls up to Hewlett Packard Enterprise	-	Reported	top500.org sdsc.edu
CPU	- AMD Opteron 8-core 2.4 GHz (Magny-Cours), quad-socket nodes, 324 nodes	AMD AMDNASDAQ	-	Reported	top500.org sdsc.edu
Interconnect	Mellanox InfiniBand QDR Interconnect Fat tree · 40 Gb/s per 4x port QDR InfiniBand fabric	Mellanox NVDANASDAQ rolls up to NVIDIA	-	Reported	top500.org sdsc.edu

The read

NSF-funded data-intensive cluster at the San Diego Supercomputer Center, built with Appro as 324 quad-socket nodes of 8-core AMD Opteron (Magny-Cours) CPUs, 64 GB of memory and 120 GB of flash per node on QDR InfiniBand, with 20 TB of memory and 38 TB of flash overall. TOP500 first listed it at 112th in November 2010 (10,112 cores, 67.32 TFlop/s Rmax, 99.53 TFlop/s Rpeak) and kept it on the list through June 2012. SDSC's launch release quotes 10,368 processor cores, a 100 TFlop/s peak and a debut at 111th, so the core count and rank differ slightly from the TOP500 page. SDSC announced in May 2015 that NSF and SDSC were transferring the cluster to the Arkansas High Performance Computing Center as Comet came online, which ended its SDSC service.

Timeline

2010 First operational source
2010-11 List debut at #112 (November 2010) source
2015 Decommissioned source

Public list appearances

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

#112: TOP500, November 2010 →

Site & facility

San Diego Supercomputer Center

Location: La Jolla, CA, USA
Commissioned: 2020

sdsc.edu

Change history

2026-10-09 Added Trestles (SDSC), listed on the TOP500 in 2010-11

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	Mellanox InfiniBand QDR
sdsc.edu	names system and part	Mellanox InfiniBand QDR

Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.