Supercomputers/Systems/BURA
Croatia · operational · hpc
BURA
Also known as University of Rijeka BURA; Bura supercomputer
Operated by University of Rijeka .
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: 1263 of 1345 systems have a readable citation that names them, and 56 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
- 233.56 TFlop/s
- Rpeak
- 287.54 TFlop/s
- Rmax ÷ Rpeak
- 81.2%
- Cores
- 6,912
- 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 | - Bull (Atos) bullx DLC 720 hybrid supercomputer | Bull | - | Reported | cnrm.uniri.hrtop500.org |
| Accelerator | - NVIDIA Tesla K40 GPUs, 4 nodes with 2 GPUs each | NVIDIA | 8 reported | Reported | cnrm.uniri.hr |
| CPU | Intel Xeon E5-2690 v3 CPUs x86-64 · 12C · 2.6 GHz · 22 nm · 135 W Intel Xeon E5-2690v3 12-core 2.6 GHz, 288 compute nodes | Intel | 288 reported | Reported | top500.orgcnrm.uniri.hr |
| Interconnect | Mellanox InfiniBand FDR Interconnect Fat tree · 56 Gb/s per 4x port · About 1 microsecond Mellanox InfiniBand FDR | NVIDIA | - | Reported | top500.org |
The read
Croatia's hybrid Bull cluster at the University of Rijeka's Centre for Advanced Computing and Modelling. The centre's page lists 288 compute nodes with dual Xeon E5 CPUs (24 cores per node, 6,912 cores, 18 TB of memory), 4 GPU nodes with two NVIDIA Tesla K40 each, 2 SMP nodes with 16 Xeon E7 processors, 256 cores and 6 TB in total, Red Hat Enterprise Linux 7 with Slurm and 95 TB of disk. TOP500 lists the 6,912-core bullx DLC 720 system (Xeon E5-2690v3, InfiniBand FDR) at 233.56 TFlop/s Rmax and 287.54 TFlop/s Rpeak, 441st in November 2015 (the university page says 440th). Croatia's Supek at SRCE is recorded separately.
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
- 2026-10-09 Added BURA
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 |
|---|---|---|
| cnrm.uniri.hr | names system, part and count | Intel Xeon E5-2690 v3 · counts: 288 |
| top500.org | names system and part | Intel Xeon E5-2690 v3, Mellanox InfiniBand FDR |
Checked 2026-10-13 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.