Supercomputers/Systems/ASPIRE 2A (GPU Partition)
Singapore · operational · mixed
ASPIRE 2A (GPU Partition)
Also known as NSCC ASPIRE 2A
Operated by National Supercomputing Centre Singapore .
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
- 3.33 PFlop/s
- Rpeak
- 6.48 PFlop/s
- Rmax ÷ Rpeak
- 51.4%
- Cores
- 43,648
- 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 | - HPE Cray EX235n and Apollo 6500 GPU nodes | Hewlett Packard Enterprise | - | Verified | top500.orgnsccsg.github.io |
| Accelerator | NVIDIA A100 SXM4 40GB Accelerators CUDA (Ampere GA100) · 6,912C · 1.41 GHz · 7 nm · 400 W 352 NVIDIA A100 40GB GPUs (NSCC) | NVIDIA | 352 reported | Reported | nscc.sg |
| CPU | AMD EPYC 7713 (Milan) CPUs x86-64 · 64C · 2 GHz · 7 nm · 225 W AMD EPYC 7713 64C 2GHz | AMD | - | Verified | top500.orgnsccsg.github.io |
| Interconnect | HPE Slingshot-10 Interconnect Dragonfly · 100 Gb/s per port HPE Slingshot-10, dragonfly topology | Hewlett Packard Enterprise | - | Verified | top500.orgnsccsg.github.io |
| Operating system | Red Hat Enterprise Linux Operating systems Linux distribution · Open source, commercial support subscription RHEL 8.3 | Red Hat | - | Reported | top500.org |
The read
GPU partition of NSCC's HPE Cray EX national system, which also has 768 dual-EPYC 7713 CPU nodes and large-memory nodes, with up to 10 PFlops of raw compute stated by NSCC and service to researchers beginning on 1 July 2023. TOP500 lists the GPU partition as HPE Cray EX235n and Apollo 6500 with AMD EPYC 7713 64C 2GHz, NVIDIA A100 SXM4 40 GB and Slingshot-10 under RHEL 8.3: 43,648 cores, Rmax 3.33 PFlop/s, Rpeak 6.48 PFlop/s. It entered at rank 199 in June 2022, ranked 167th in November 2022 (the edition used here) and was 395th in June 2026. NSCC's user guide counts 64 Cray EX GPU nodes with 4 A100 each plus 12 four-GPU and 6 eight-GPU Apollo nodes, 352 A100 in all.
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
- 2026-10-02 Added ASPIRE 2A (GPU Partition), 167th on the November 2022 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 7713 (Milan), NVIDIA A100 SXM4 40GB, HPE Slingshot-10 |
| nscc.sg | names system, part and count | AMD EPYC 7713 (Milan), NVIDIA A100 SXM4 40GB · counts: 352 |
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.