Supercomputers/Systems/JUMP
Germany · operational · hpc
JUMP
Also known as Julich Multi Processor; JUMP p690
Operated by Forschungszentrum Julich at Julich Supercomputing Centre .
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 1540 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
- 5.57 TFlop/s
- Rpeak
- 8.92 TFlop/s
- Rmax ÷ Rpeak
- 62.4%
- Cores
- 1,312
- 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 | - IBM eServer pSeries 690 (p690), 1,312 POWER4+ processors | IBM | - | Verified | arxiv.orgtop500.org |
| CPU | - IBM POWER4+ 1.7 GHz | IBM | 1,312 verified | Verified | arxiv.orgtop500.org |
| Operating system | IBM AIX Operating systems Unix (System V-derived) · Proprietary AIX | IBM | - | Reported | top500.org |
The read
IBM p690 cluster of 1.7 GHz POWER4+ processors that served as the main production system of the John von Neumann Institute for Computing at Julich. The NIC survey paper of December 2005 describes 1,312 POWER4+ processors, 8.9 Tflops peak and 5.6 Tflops LINPACK, complemented by a 2,048-processor Blue Gene/L (see jubl) and a Cray XD1 for biophysics; it also records EU funding of 500,000 GFlops hours on JUMP for 2004 to 2007 for non-German researchers and 50,000 processor hours per month reserved for an NIC outreach initiative towards new EU member states. TOP500 lists 1,312 cores under AIX with the Federation switch, 5,568 GFlop/s Rmax and 8,921 GFlop/s peak, first appearing in June 2004 at 21st, ranked 52nd in June 2005 and 275th in June 2007, its last list. Other Julich systems in the dataset are jubl, jugene and juropa; no decommissioning date was found in a fetched page.
Timeline
Public list appearances
Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.
Site & facility
Julich Supercomputing Centre
- Location
- Julich, Germany
- Cooling
- Direct liquid cooling
- Commissioned
- 2004
Change history
- 2026-10-17 JUMP added from its source pages
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 |
|---|---|---|
| arxiv.org | does not name this system | - |
| top500.org | names system only | - |
Checked 2026-10-18 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.
Programming a supercomputer
The software stack beneath the application, and why the OS is now a sovereignty signal as much as a technical choice.