Supercomputers/Systems/ASPIRE 2B (CPU Partition)
Singapore · operational · hpc
ASPIRE 2B (CPU Partition)
Also known as NSCC ASPIRE 2B CPU
Operated by National Supercomputing Centre Singapore at NSCC (Nanyang Technological University) .
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
- 10.09 PFlop/s
- Rpeak
- 12.25 PFlop/s
- Rmax ÷ Rpeak
- 82.4%
- Cores
- 147,456
- Power
- 945.92 kW
- Per watt
- 10.7 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 | - HPE Cray EX4252 Gen 2 | Hewlett Packard Enterprise | - | Reported | top500.org |
| CPU | AMD EPYC 9005 (Turin) CPUs x86-64 · 192C · 2.7 GHz · TSMC N3E · 500 W AMD EPYC 9655 96C 2.6GHz | AMD | - | Verified | top500.orgnscc.sg |
| Interconnect | HPE Slingshot-11 Interconnect Dragonfly · 200 Gb/s per port · Around 2 microseconds Slingshot-11, 400 Gbps | Hewlett Packard Enterprise | - | Verified | top500.orgnscc.sg |
| Operating system | Red Hat Enterprise Linux Operating systems Linux distribution · Open source, commercial support subscription RHEL 9.6 | Red Hat | - | Reported | top500.org |
The read
CPU partition of the ASPIRE 2B national system, the sibling of the GPU partition already in this register. TOP500 lists an HPE Cray EX4252 Gen 2 with AMD EPYC 9655 96C 2.6GHz on Slingshot-11 under RHEL 9.6: 147,456 cores, Rmax 10.092 PFlop/s, Rpeak 12.25 PFlop/s, 945.92 kW, ranked 184th in June 2026 (its only edition so far, so no list-appearance row is added). NSCC's ASPIRE 2B page states about 12 PFlops theoretical peak for the CPU nodes (it quotes 184,320 cores, a larger count than the TOP500 run) and 1,536 H200 GPUs for the GPU nodes, 115 PFlops combined.
Timeline
- 2026-06 First operational source
Site & facility
NSCC (Nanyang Technological University)
- Location
- Singapore, Singapore
- Commissioned
- 2026
Change history
- 2026-10-02 Added ASPIRE 2B (CPU Partition), 184th on the June 2026 TOP500
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 | AMD EPYC 9005 (Turin), HPE Slingshot-11 |
| nscc.sg | names system and part | AMD EPYC 9005 (Turin) |
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.