Supercomputers/Systems/ALTAY
Turkey · operational · hpc
ALTAY
Also known as ITU UHeM ALTAY cluster
Operated by ITU UHeM at ITU Ayazaga Campus (UHeM) .
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
- -
- 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 |
|---|---|---|---|---|---|
| Accelerator | - NVIDIA A100 80 GB GPUs, up to 4 per node with NVLink | NVIDIA | - | Reported | uhem.itu.edu.tr |
| Accelerator | - AMD Instinct MI210 GPUs | AMD | - | Reported | uhem.itu.edu.tr |
| CPU | AMD EPYC 7742 (Rome) CPUs x86-64 · 64C · 2.25 GHz · 7 nm · 225 W AMD EPYC 7742 nodes (128 cores) | AMD | - | Reported | uhem.itu.edu.tr |
| CPU | Intel Xeon Platinum 8362 (Ice Lake) CPUs x86-64 · 32C · 2.8 GHz · Intel 10nm SuperFin Intel Xeon 8362 nodes | Intel | - | Reported | uhem.itu.edu.tr |
| Interconnect | NVIDIA InfiniBand HDR Interconnect Fat tree or dragonfly+ · 200 Gb/s per port · About 0.6 microseconds HDR InfiniBand 200 Gbps | NVIDIA | - | Reported | uhem.itu.edu.tr |
| Operating system | Red Hat Enterprise Linux Operating systems Linux distribution · Open source, commercial support subscription Red Hat Enterprise Linux | Red Hat | - | Reported | uhem.itu.edu.tr |
The read
The main CPU and GPU cluster of Istanbul Technical University's national HPC centre UHeM: 128 compute nodes of AMD EPYC 7742, Intel Xeon 8362 and AMD EPYC 7543 CPUs, AMD Instinct MI210 and NVIDIA A100 80 GB GPU nodes with NVLink, HDR InfiniBand at 200 Gbps and a 1.6 PB BeeGFS filesystem on Red Hat Enterprise Linux. A web search summary quotes over 13,800 compute cores, which we did not confirm on a fetched page, so no core count is recorded. UHeM also runs the older SARIYER cluster and a single Grace Hopper node, not listed here. UHeM is the only source, so the tier is reported.
Timeline
No dated events recorded.
Site & facility
ITU Ayazaga Campus (UHeM)
- Location
- Istanbul, Turkey
- Commissioned
- 2006
Change history
- 2026-10-02 Added ALTAY, Istanbul Technical University's UHeM CPU and GPU 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 |
|---|---|---|
| uhem.itu.edu.tr | names system and part | AMD EPYC 7742 (Rome), Intel Xeon Platinum 8362 (Ice Lake), NVIDIA InfiniBand HDR |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.
Further reading
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.
Programming a supercomputer
The software stack beneath the application, and why the OS is now a sovereignty signal as much as a technical choice.