Supercomputers/Systems/Ghawar-1
Saudi Arabia · operational · hpc
Ghawar-1
Operated by Saudi Aramco .
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
- 19.26 PFlop/s
- Rpeak
- 22.86 PFlop/s
- Rmax ÷ Rpeak
- 84.3%
- Cores
- 714,240
- 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 EX | Hewlett Packard Enterprise | - | Reported | top500.org |
| CPU | - AMD EPYC 7702 64C 2GHz, 714,240 cores (11,160 processors implied) | AMD | 11,160 estimated | Reported | top500.org |
| Interconnect | HPE Slingshot-10 Interconnect Dragonfly · 100 Gb/s per port Slingshot-10 | Hewlett Packard Enterprise | - | Reported | top500.org |
| Operating system | SUSE Linux Enterprise Server Operating systems Linux distribution · Open source, commercial support subscription SLES15 SP2 | SUSE | - | Reported | top500.org |
The read
Saudi Aramco's HPE Cray EX, a CPU-only system of AMD EPYC 7702 64-core processors (714,240 cores) on Slingshot-10, running SLES 15 SP2. It debuted 19th on the June 2021 TOP500 and was 114th by June 2026, with a 381.7 TFlop/s HPCG result. It is Aramco's second-largest TOP500 entry after Dammam-7, which is a separate GPU system in this dataset. Aramco's list of systems also includes Tuwaiq-1 and several smaller ones. The site within Saudi Arabia is not stated in a page we fetched, so the system is left unlocated, and no operator source was fetched, so every figure rests on TOP500 alone and the tier is reported.
Timeline
- 2021-06 List debut at #19 (June 2021) source
Public list appearances
Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.
Change history
- 2026-10-01 Added Ghawar-1 (Saudi Aramco)
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 | HPE Slingshot-10 |
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.