Supercomputers/Systems/Moira (SSC)
Canada · operational · hpc
Moira (SSC)
Also known as Shared Services Canada Moira
Operated by Shared Services Canada .
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
- 12.91 PFlop/s
- Rpeak
- 14.91 PFlop/s
- Rmax ÷ Rpeak
- 86.6%
- Cores
- 232,960
- 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 | - Lenovo (manufacturer field; model not stated on the Moira page) | Lenovo | - | Reported | top500.org |
| CPU | Intel Xeon 6 6900P (Granite Rapids) CPUs x86-64 · 128C · 2 GHz · Intel 3 · 500 W Intel Xeon 6980P 128C 2GHz | Intel | - | Reported | top500.org |
| Interconnect | NVIDIA InfiniBand NDR (Quantum-2) Interconnect Fat tree or dragonfly+ · 400 Gb/s per port · Under 0.6 microseconds Infiniband NDR | NVIDIA | - | Reported | top500.org |
| Operating system | Red Hat Enterprise Linux Operating systems Linux distribution · Open source, commercial support subscription RHEL 9.4 | Red Hat | - | Reported | top500.org |
The read
A Lenovo supercomputer listed at Shared Services Canada with Intel Xeon 6980P 128C 2GHz CPUs, InfiniBand NDR and RHEL 9.4, 232,960 cores, Rmax 12.91 PFlop/s and Rpeak 14.91 PFlop/s, ranked 137 on November 2025 and 157 on June 2026. It is identical in size to the machine Conrad listed beside it. The pages used do not say what workload it serves or where it sits; SSC's published pages describe only the older twin weather supercomputers Robert and Underhill (already in this dataset), so this is not asserted to be a weather system. TOP500 is the only source and 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
- 2026-10-04 Added Moira, a Xeon 6 supercomputer at Shared Services Canada
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 |
|---|---|---|
| top500.org | names system and part | Intel Xeon 6 6900P (Granite Rapids), NVIDIA InfiniBand NDR (Quantum-2) |
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.