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Who we are

The High Performance Computing Centre Stuttgart (HLRS) is a research and service institution affiliated to the University of Stuttgart. It has been the first national supercomputing centre in Germany and is offering services to academic users and industry.

HLRS is a founding member of the German Gauss Centre for Supercomputing (GCS) together with Juelich Supercomputing Centre (JSC) and Leibniz Supercomputing Centre (LRZ). This alliance provides one of the largest and most powerful supercomputer infrastructures in Europe – serving all scientific disciplines. With GCS being a member of the ‘Partnership for Advanced Supercomputing in Europe’ (PRACE), HLRS provides researchers from academia and industry access to computing and data management resources and services for large-scale scientific and engineering applications.

Furthermore, it has funded two solution centres (Energy and Automotive) with the collaboration of Steinbuch Computing Centre Karlsruhe to support activities of stakeholders in this domain. With the co-founded SICOS GmbH, HLRS is in constant contact with Small and Medium Enterprises (SMEs) willing to use HPC to improve their business. This is crucial due to the regional specifics of the metropolitan area of Stuttgart, where numerous SMEs as well as global players in the field of engineering are located, leading to a high demand for HPC in business.

HLRS contributes to HPC Europa 3 by providing access to HPC resources on their flagship 'Hazel Hen'. The Cray XC40-system is at the heart of the high performance computing (HPC) system infrastructure of the HLRS. With a peak performance of 7.42 Petaflops (quadrillion floating point operations per second), Hazel Hen is one of the most powerful HPC systems in the world (position 17 of TOP500, 06/2017). The HLRS supercomputer, which was taken into operation in October 2015, is based on the Intel® Haswell Processor and the Cray Aries network and is designed for sustained application performance and high scalability.

Our HPC system


HLRS’s system Hazel Hen with ~185.000 Intel Haswell compute cores and the overall performance of ~7,4 PFLOPs as well as ~10PB of storage.


(information as of 01.07.2017)