Turkey · operational · hpc

ARF-ACC

Operated by TUBITAK ULAKBIM at TRUBA (Ankara) .

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: 12.09 PFlop/s
Rpeak: 18.82 PFlop/s
Rmax ÷ Rpeak: 64.2%
Cores: 26,496
Power: 238.87 kW
Per watt: 50.6 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 ThinkSystem SD650-N V3	Lenovo 992HKEX	-	Reported	top500.org
Accelerator	NVIDIA H100 SXM5 Accelerators CUDA (Hopper GH100) · 16,896C · 1.98 GHz · TSMC 4N · 700 W NVIDIA H100 GPUs, the original 2024 accelerator deployment	NVIDIA NVDANASDAQ	-	Verified	top500.org ulakbim.tubitak.gov.tr
Accelerator	NVIDIA H200 SXM Accelerators CUDA (Hopper GH100) · 16,896C · 1.98 GHz · TSMC 4N · 700 W 192 NVIDIA H200 GPUs added in 2025	NVIDIA NVDANASDAQ	192 reported	Verified	tubitak.gov.tr top500.org
CPU	Intel Xeon Gold 6548Y+ CPUs x86-64 · 32C · 2.5 GHz · Intel 7 · 250 W Xeon Gold 6548Y+ 32C 2.5GHz	Intel INTCNASDAQ	-	Reported	top500.org
Interconnect	NVIDIA InfiniBand NDR (Quantum-2) Interconnect Fat tree or dragonfly+ · 400 Gb/s per port · Under 0.6 microseconds Infiniband NDR200	NVIDIA NVDANASDAQ	-	Reported	top500.org
Operating system	Rocky Linux Operating systems RHEL-compatible Linux, community-maintained · Downstream rebuild of Red Hat Enterprise Linux source Rocky Linux 9.4	Rocky Enterprise Software Foundation	-	Reported	top500.org

The read

TRUBA's Lenovo ThinkSystem SD650-N V3 cluster at TUBITAK ULAKBIM's Ankara data centre, serving Turkish university and public-sector researchers. Installed with NVIDIA H100 GPUs in 2024, then expanded with 192 NVIDIA H200 GPUs in 2025 per ULAKBIM's own announcement, which nearly doubled its core count and performance between the June 2025 and November 2025 TOP500 editions; November 2025, at 145th, is its best-ever rank. TOP500 is the only source for Rmax, Rpeak and core count, so the tier is reported.

Timeline

2024 First operational source
2025-11 List debut at #145 (November 2025) source

Public list appearances

Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.

#145: TOP500, November 2025 →

Site & facility

TRUBA (Ankara)

Location: Ankara, Turkey
Commissioned: 2024

top500.org ulakbim.tubitak.gov.tr

Change history

2026-09-24 Added: first supercomputer from Turkey in the dataset, TUBITAK ULAKBIM's TRUBA infrastructure

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
ulakbim.tubitak.gov.tr	names system and part	NVIDIA H100 SXM5
top500.org	names system and part	Intel Xeon Gold 6548Y+, NVIDIA H100 SXM5, NVIDIA H200 SXM, NVIDIA InfiniBand NDR (Quantum-2), Rocky Linux

Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.