Supercomputers/Systems/Jacquard (NERSC)
USA · operational · hpc
Jacquard (NERSC)
Also known as NERSC Linux Networx Opteron cluster
Operated by Lawrence Berkeley National Laboratory .
Researched with AI assistance, checked by scripts. These rows were researched by AI agents reading public operator, laboratory and vendor sources, appended by scripts and checked by automated validation; no subject-matter expert has reviewed them (how this site is made). A mechanical second-reader pass has since fetched every cited source: 1350 of 1581 systems have a readable citation that names them, and 64 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
- 2.12 TFlop/s
- Rpeak
- 2.77 TFlop/s
- Rmax ÷ Rpeak
- 76.5%
- Cores
- 630
- 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.
How it compares
Ranked against the other machines in this dataset that report the same figure: those that first came into service within two years of Jacquard (NERSC), and those in USA. Computed from our tables; a metric is ranked only when at least eight peers report it.
| Metric | Value | Against its era | Against its country |
|---|---|---|---|
| Rmax | 2.12 TFlop/s | #69 of 74 · bottom 8% | #311 of 332 · bottom 7% |
| Rmax ÷ Rpeak | 76.5 % | #42 of 74 · bottom 45% | #144 of 331 · top 43% |
Every metric is ranked largest-first, so a high power-draw rank means a big power draw, not a good one. Rmax ÷ Rpeak uses HPL-measured results only. Rankings move as machines are added; they describe this dataset, not the world.
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 | - Linux Networx cluster, 722 processors per NERSC acceptance report | Linux Networx HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | nextgov.comtop500.org |
| CPU | - AMD Opteron 2.2 GHz, 630 cores in the TOP500 entry | AMD | - | Reported | top500.org |
The read
Linux Networx Opteron cluster at NERSC, named for Joseph-Marie Jacquard, accepted by NERSC on 16 August 2005 according to an August 2005 Nextgov report. That report gives a 722-processor system costing $3.4 million with a 3.1 teraflop/s peak, serving more than 2,000 researchers on climate, cosmology, protein-structure and combustion work, and positions it alongside Seaborg (see seaborg), a 6,656-processor IBM machine. TOP500 lists 630 cores of 2.2 GHz Opteron on InfiniBand with 2.12 TFlop/s Rmax and 2.77 TFlop/s peak, ranked 306th in November 2005 and 465th in June 2006, its last list. The processor count and peak in the Nextgov report do not match the TOP500 entry and the sources do not reconcile them, so the TOP500 figures are recorded as the benchmarked configuration. Nextgov does not mention the interconnect; InfiniBand comes from TOP500 only. NERSC's own acceptance page returned a not-found error when fetched, so no operator page backs the figures.
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
- 2026-10-17 Jacquard (NERSC) added from its source pages
Nearby in scale
The machines closest to Jacquard (NERSC) by Rmax, smaller to larger.
- Weta Digital BladeCenter Cluster · New Zealand, operational · 0 PFlop/s
- UTokyo SR8000/MPP · Japan, decommissioned · 0 PFlop/s
- ASCI Blue Mountain · USA, decommissioned · 0 PFlop/s
- ASCI Blue-Pacific · USA, decommissioned · 0 PFlop/s
- SuperMike · USA, operational · 0 PFlop/s
- Cheetah (ORNL) · USA, decommissioned · 0 PFlop/s
Related systems
Same operator
- Bassi · USA, decommissioned, 2006
- Franklin · USA, decommissioned, 2008
- Seaborg · USA, decommissioned, 2001
- Hopper (NERSC) · USA, decommissioned, 2010
- Magellan NERSC · USA, operational, 2010
- Edison · USA, decommissioned, 2014
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 |
|---|---|---|
| nextgov.com | names system only | - |
| top500.org | names system only | - |
Checked 2026-10-18 by pnpm verify. Re-run it and the table changes with the web.