Greece · operational · hpc

ARIS

Also known as GRNET ARIS; Greek national supercomputer

Operated by GRNET at ARIS Data Centre (Athens) .

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: 170.00 TFlop/s
Rpeak: 190.00 TFlop/s
Rmax ÷ Rpeak: 89.5%
Cores: 8,520
Power: 154 kW
Per watt: 1.1 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	- IBM NeXtScale nx360M5	IBM IBMNYSE	-	Reported	top500.org
Accelerator	- 44 GPU nodes x 2 NVIDIA Tesla K40m (quantity derived as 44 x 2)	NVIDIA NVDANASDAQ	88 reported	Reported	doc.aris.grnet.gr
Accelerator	- 18 Phi nodes x 2 Intel Xeon Phi 7120P (quantity derived as 18 x 2)	Intel INTCNASDAQ	36 reported	Reported	doc.aris.grnet.gr
Accelerator	NVIDIA Tesla V100 Accelerators CUDA (Volta GV100) · 5,120C · 1.53 GHz · 12 nm · 300 W 1 ML node with 8 NVIDIA Volta V100 GPUs	NVIDIA NVDANASDAQ	8 reported	Reported	doc.aris.grnet.gr
CPU	- 426 thin nodes with two 10-core Intel Xeon E5-2680v2 at 2.8 GHz (8,520 cores, quantity is nodes)	Intel INTCNASDAQ	426 reported	Reported	top500.org doc.aris.grnet.gr
Interconnect	Mellanox InfiniBand FDR Interconnect Fat tree · 56 Gb/s per 4x port · About 1 microsecond InfiniBand FDR (56 Gb/s) fat tree; TOP500 lists FDR14	NVIDIA NVDANASDAQ	-	Reported	doc.aris.grnet.gr top500.org

The read

Greece's national HPC system run by GRNET, an IBM NeXtScale cluster that debuted at 468th on the June 2015 TOP500 with 8,520 cores (426 thin nodes with two 10-core Xeon E5-2680v2), 0.17 PFlop/s Rmax, 0.19 PFlop/s Rpeak and 154 kW on InfiniBand FDR14. The ARIS documentation lists 532 nodes in total: 426 thin nodes, 44 GPU nodes with two Tesla K40m each, 18 Phi nodes with two Xeon Phi 7120P each, 44 fat nodes with 512 GB and one ML node with eight V100 GPUs, all on FDR InfiniBand (56 Gb/s fat tree) with GPFS storage. The TOP500 figures and core count cover the thin-node partition only. GRNET later ran an equipment upgrade project from May 2022 to June 2025 that kept capacity while cutting energy use by more than half, and describes ARIS as in use since 2015 at the data centre of the Ministry of Education building. The newer DAEDALUS system is a separate row.

Timeline

2015-06 List debut at #468 (June 2015) source
2015-06 First operational source

Public list appearances

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

#468: TOP500, June 2015 →

Site & facility

ARIS Data Centre (Athens)

Location: Athens, Greece
Commissioned: 2015

grnet.gr top500.org

Change history

2026-10-04 Added ARIS, GRNET

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
doc.aris.grnet.gr	names system, part and count	NVIDIA Tesla V100, Mellanox InfiniBand FDR · counts: 8
top500.org	names system, part and count	Mellanox InfiniBand FDR · counts: 8

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