High Performance Computing
The series of Lichtenberg high-performance computers at TU Darmstadt provides computing resources for researchers from academia and public research facilities in Germany. The multifaceted architecture of the high performance computer allows for flexible and efficient scientific computing, especially for computationally intensive applications.
Film: Inauguration of Lichtenberg II high-performance computer
In mid-July, Lichtenberg II high-performance computer of TU Darmstadt was officially put into operation. Equipped with the latest technology, it sets standards in performance and energy efficiency and thus offers the best conditions for excellent research. Our two-minute film provides insights into the ceremonial inauguration and a tour of the high-performance computer.
The Lichtenberg II system
In 2020, the first expansion stage of the Lichtenberg II system with 643 computing nodes was put into operation; this will be expanded by 581 computing nodes with the second expansion stage. Together, the two expansion stages will provide their users with a theoretical peak performance of approximately 8.5 petaflops per second (PFlop/s) through processors and 1.7 petaflops per second through accelerators. The main memory totals 563 terabytes, the storage system for data around 6 petabytes.
Highly efficient energy management concept
Energy-efficient computer systems and sustainable use are key goals for TU Darmstadt. For this reason, the waste heat from Lichtenberg II is not simply released into the environment, but during the heating period, a significant portion is fed into the district heating network that connects all buildings on the Lichtwiese campus.
For this purpose, Lichtenberg II uses direct and highly efficient hot water cooling to fully utilize the power of the processors. In the process, special heat exchangers and coolant distributors enable high return temperatures of more than 45 degrees Celsius to ensure sensible reuse of energy and efficient cooling. This leads to a significantly improved CO2 and energy balance and is an important step towards sustainable high-performance computing.
Funded by the German Federal Government and the State of Hesse
The entire Lichtenberg II system (all expansion stages) is funded by the German Federal Government and the State of Hesse with a total amount of ~15 million euros.
The experts of the “Hessisches Komptenzzentrum für Hochleistungsrechnen” (Hessian Competence Center for High Performance Computing) will provide for consultancy and scientific support on using the cluster efficiently and hosts various workshops on scientific HPC.
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![angekündigte Wartung]()
![angekündigte Wartung]()
HPC: Downtime for Operations on the Interconnect
August 23, 2023
2023-08-23 8am – 2023-08-24
For reconfigurations on the Infiniband network, the cluster will be down.
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![LB2-Einweihung-4]()
Picture: Klaus Mai![LB2-Einweihung-4]()
Picture: Klaus MaiSustainable computing for top-level research
July 12, 2023
TU Darmstadt inaugurates Lichtenberg II high-performance computer
TU Darmstadt officially inaugurated the new Lichtenberg II high-performance computer on Tuesday (July 11). Equipped with the latest technology, it sets standards in performance and energy efficiency and thus offers the best conditions for excellent research. Lichtenberg II is also part of the Network for National High Performance Computing (NHR) and supports the nationwide provision of computing power for science in a particularly sustainable and resource-efficient way. The computer is named after the polymath Georg Christoph Lichtenberg (1742-1799).
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![Ausrufe-Dreieck]()
![Ausrufe-Dreieck]()
Failure of Coldwater-Cooling – Emergency Shutdown
June 16, 2023
Update: sensors replaced, Lichtenberg HPC up & running
Friday (2023-06-16) and Sunday (2023-06-18): failure of the coldwater cooling / air conditioning system – the Lichtenberg HPC has had to be switched off.
