Supercomputers/Systems/Makman-2
Saudi Arabia · operational · hpc
Makman-2
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
- 2.25 PFlop/s
- Rpeak
- 3.04 PFlop/s
- Rmax ÷ Rpeak
- 74.0%
- Cores
- 76,032
- Power
- 1.13 MW
- Per watt
- 2.0 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 | - Dell PowerEdge R630 | Dell Technologies | - | Reported | top500.org |
| CPU | - Intel Xeon E5-2680v3 12C 2.5GHz | Intel | - | Reported | top500.org |
| Interconnect | Mellanox InfiniBand QDR Interconnect Fat tree · 40 Gb/s per 4x port Infiniband QDR | NVIDIA | - | Reported | top500.org |
| Operating system | Red Hat Enterprise Linux Operating systems Linux distribution · Open source, commercial support subscription Red Hat Enterprise Linux 6.5 | Red Hat | - | Reported | top500.org |
The read
A Saudi Aramco Dell PowerEdge R630 cluster of Intel Xeon E5-2680v3 12-core CPUs on QDR InfiniBand, installed in 2015 and running RHEL 6.5, with 76,032 cores, Rmax 2.25 and Rpeak 3.04 PFlop/s at 1,134 kW. It entered the TOP500 at 28th in June 2015 and was still listed at 474th in June 2024, the latest list on which we found it. TOP500 is the only source, so the tier is reported and the site is left unlocated.
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 Makman-2, Saudi Aramco's Dell cluster, 28th on the June 2015 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 | Mellanox InfiniBand QDR |
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.