Supercomputers/Systems/BeBop
USA · operational · hpc
BeBop
Also known as Argonne LCRC Bebop cluster
Operated by Argonne National Laboratory .
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: 1263 of 1345 systems have a readable citation that names them, and 56 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
- 1.07 PFlop/s
- Rpeak
- 1.75 PFlop/s
- Rmax ÷ Rpeak
- 61.1%
- Cores
- 46,720
- 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 CS400 cluster | Cray HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | top500.orgweb.archive.org |
| CPU | Intel Xeon E5-2695 v4 CPUs x86-64 · 18C · 2.1 GHz · 14 nm · 120 W Intel Xeon E5-2695v4, 664 Broadwell nodes of 36 cores | Intel | - | Reported | top500.orgweb.archive.org |
| CPU | - Intel Xeon Phi 7230 64C 1.3GHz Knights Landing, 352 nodes | Intel | - | Reported | top500.orgweb.archive.org |
| Interconnect | Omni-Path Architecture Interconnect Fat tree · 100 Gb/s per port · About 1 microsecond Intel Omni-Path fabric | Cornelis Networks | - | Reported | top500.orgweb.archive.org |
The read
Cray CS400 cluster of Argonne's Laboratory Computing Resource Center. TOP500 lists Intel Xeon Phi 7230 64C 1.3GHz and Xeon E5-2695v4 processors on Intel Omni-Path running Cray Linux Environment, 46,720 cores, Rmax 1.07 PFlop/s and Rpeak 1.75 PFlop/s; it first appeared 118th on the June 2017 list and was last listed 468th in June 2019. An LCRC page captured by the Internet Archive in 2019 describes Bebop as 1,024 public nodes in Broadwell partitions (664 nodes of Xeon E5-2695v4, 36 cores each, 128 GB DDR4) and Knights Landing partitions (352 nodes of Xeon Phi 7230, 64 cores each, 96 GB DDR4 plus 16 GB MCDRAM) on an Omni-Path fabric. The public-partition node mix sums to about 46,400 cores against TOP500's 46,720, so the tier is reported.
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 BeBop
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 |
|---|---|---|
| web.archive.org | names system and part | Intel Xeon E5-2695 v4, Omni-Path Architecture |
| top500.org | names system and part | Intel Xeon E5-2695 v4, Omni-Path Architecture |
Checked 2026-10-13 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.