Supercomputers/Systems/NCSA Titan Itanium Cluster
USA · operational · hpc
NCSA Titan Itanium Cluster
Also known as Titan (NCSA Itanium cluster)
Operated by NCSA .
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
- 677.9 GFlop/s
- Rpeak
- 1.02 TFlop/s
- Rmax ÷ Rpeak
- 66.2%
- Cores
- 320
- 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 Itanium-based dual-processor nodes, 160 nodes | IBM | 160 reported | Reported | top500.orgroute-fifty.com |
| CPU | - Intel Itanium 800 MHz, 320 processors | Intel | 320 reported | Reported | top500.orgroute-fifty.com |
The read
IBM Itanium Linux cluster at NCSA, the Itanium half of a two-stage cluster targeting 2 TFlop/s. Government Computer News (April 2001) reports a 512-node dual 1 GHz Pentium III half finished in February 2001 and a 160-node half with two 800 MHz Itanium processors per node, IBM-supplied, running TurboLinux, with Myrinet planned and compatibility with the Los Lobos cluster at the University of New Mexico as a design goal; IBM announced the 160 Itanium systems in May 2001 (ESJ, https://esj.com/articles/2001/05/30/ibms-reveals-itanium-systems-with-160node-cluster.aspx). TOP500 lists 320 Itanium 800 MHz cores, Rmax 677.9 and Rpeak 1,024 GFlop/s, first at rank 34 in November 2001 and last at rank 111 in June 2003 (https://www.top500.org/system/171211/). TOP500 records Fast Ethernet as the interconnect whereas the press accounts of the plan name Myrinet, so no interconnect edge is recorded. The name Titan is TOP500's label for this machine and is unrelated to the Oak Ridge system of the same name (id titan).
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 Added NCSA Titan Itanium Cluster
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 |
|---|---|---|
| route-fifty.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.