Supercomputers/Systems/Imperial HX1
United Kingdom · operational · mixed
Imperial HX1
Also known as HX1
Operated by Imperial College London .
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
- -
- Rpeak
- -
- Rmax ÷ Rpeak
- -
- Cores
- 19,512
- 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 SD630v2 CPU nodes and Lenovo A100 GPU nodes | Lenovo | - | Reported | icl-rcs-user-guide.readthedocs.io |
| Accelerator | NVIDIA A100 SXM4 80GB Accelerators 60 NVIDIA A100 80 GB SXM GPUs (15 nodes x 4) | NVIDIA | 60 reported | Reported | icl-rcs-user-guide.readthedocs.ioicl-rcs-user-guide.readthedocs.io |
| CPU | Intel Xeon Platinum 8358 CPUs x86-64 · 32C · 2.6 GHz · 10 nm · 250 W Intel Xeon Platinum 8358: 288 nodes x 2 (arithmetic from node count) | Intel | 576 estimated | Reported | icl-rcs-user-guide.readthedocs.io |
| Interconnect | NVIDIA InfiniBand HDR Interconnect Fat tree or dragonfly+ · 200 Gb/s per port · About 0.6 microseconds NVIDIA ConnectX-6 HDR200 (200 Gbit/s) InfiniBand | NVIDIA | - | Reported | icl-rcs-user-guide.readthedocs.io |
| Storage | - 2 PB IBM Spectrum Scale (GPFS) on Lenovo DSS-G | Lenovo | - | Reported | icl-rcs-user-guide.readthedocs.ioicl-rcs-user-guide.readthedocs.io |
The read
Imperial College London's production capability HPC cluster from its Research Computing Service: 303 nodes and 19,512 cores built from Lenovo SD630v2 servers (288 nodes with 2 Intel Xeon Platinum 8358) plus 15 Lenovo GPU nodes with 4 NVIDIA A100 80 GB each (60 GPUs), 159 TB RAM, NVIDIA ConnectX-6 HDR200 InfiniBand and 2 PB of IBM Spectrum Scale on Lenovo DSS-G storage. Imperial's user guide notes HX1 was relocated between data centres; the current site is not stated in the cited pages.
Timeline
No dated events recorded.
Change history
- 2026-10-02 Added HX1, Imperial College's capability HPC 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 |
|---|---|---|
| icl-rcs-user-guide.readthedocs.io | names system, part and count | Intel Xeon Platinum 8358, NVIDIA A100 SXM4 80GB, NVIDIA InfiniBand HDR · counts: 60 |
| icl-rcs-user-guide.readthedocs.io | names system and part | NVIDIA A100 SXM4 80GB, NVIDIA InfiniBand HDR |
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.