Between the years 2017-2023, there were two high performance computing systems available for scientific computing at the University of Oldenburg:

• CARL (327 compute nodes, 7.640 cores, 77 TB of RAM, 271 TFlop/s maximum theoretical performance) which is funded by the Deutsche Forschungsgemeinschaft (DFG) and the Ministry of Science and Culture (MWK) of the State Lower-Saxony. The System has been used to conduct fundamental research mainly in the areas of Quantum Chemistry and Quantum Dynamics, Theoretical Physics, the Neurosciences (including Hearing Research), Oceanic and Marine Research, and Biodiversity.

• EDDY (244 compute nodes, 5.856 cores, 21 TB of RAM, 201 TFlop/s maximum theoretical performance) was founded by the Federal Ministry for Economic Affairs and Enegery (BMWi) and used to perform challenging Computational Fluid Dynamics (CFD) calculations in wind energy research.

Both systems were maintained and operated by the IT Services of the University of Oldenburg.

The University of Oldenburg had two high-performance computing cluster systems available from 2011 to 2017:

• HERO (High-End Computing Resource Oldenburg) with 2088 compute cores, 4.7 TB of main memory, and 21 TFlop/s maximum theoretical computing power was funded by the German Research Foundation (DFG) and the Ministry of Science and Culture (MWK) of Lower Saxony. The system served research in various fields, including quantum chemistry and quantum dynamics, theoretical physics, neuroscience, marine and biodiversity research, and computer science.
• FLOW (Facility for Large-scale COmputations in Wind Energy Research) with 2288 compute cores, 6.2 TB of main memory, and 24.3 TFlop/s maximum theoretical computing power was funded by the Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU). It was specifically used for challenging CFD (Computational Fluid Dynamics) simulations in wind energy research.

Both systems were operated by the IT Services of the University of Oldenburg and shared some resources such as the management system and storage system.

The Beowulf Cluster GOLEM was the first larger HPC system at the University Oldenburg and was utilized by various research groups from Chemistry and Physics. Moreover, part of the GOLEM cluster was integrated into the HERO cluster (approximately 57 compute nodes with 288 CPU cores).