Supercomputers/Systems/Queen Bee
USA · operational · hpc
Queen Bee
Also known as LONI Queen Bee
Operated by Louisiana Optical Network Initiative .
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
- 34.78 TFlop/s
- Rpeak
- 50.77 TFlop/s
- Rmax ÷ Rpeak
- 68.5%
- Cores
- 5,440
- 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 | - Dell PowerEdge 1950 cluster | Dell Technologies | - | Reported | top500.org |
| CPU | - Intel Xeon E5345 quad-core 2.33 GHz, 5,440 cores | Intel | - | Reported | top500.org |
| Interconnect | Mellanox InfiniBand DDR Interconnect Fat tree · 20 Gb/s per 4x port · About 2 microseconds InfiniBand DDR | NVIDIA | - | Reported | top500.org |
The read
The flagship cluster of the Louisiana Optical Network Initiative, a Dell PowerEdge 1950 system with 5,440 Xeon E5345 quad-core 2.33 GHz cores on InfiniBand DDR, listed at 34.78 TFlop/s Rmax and 50.77 TFlop/s Rpeak. A September 2012 LSU Reveille article says LONI bought it in 2007, that it sits in the state's Information Systems Building, that it ranked 23rd in 2007 and delivers about 50 teraflops from 5,440 cores, and that its replacement was being planned with smaller 'worker bee' clusters running at member institutions. TOP500 ranks it 23rd in June 2007, 32nd, 55th, 77th, 127th and 164th through November 2009, with a last list appearance in November 2010 at 373rd. The status date is the Reveille article.
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
- 2026-10-09 Added Queen Bee
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 |
|---|---|---|
| lsureveille.com | names system only | - |
| top500.org | names system and part | Mellanox InfiniBand DDR |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.
Further reading
Operating a supercomputer
Acceptance testing, why "installed" and "in production" are six months apart, and the machine lifecycle.
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.