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Leibniz Supercomputing Centre (BADW-LRZ)

Organization

The Leibniz Supercomputing Centre (Leibniz-Rechenzentrum, BADW-LRZ) is one of the three German national supercomputing centres which together form the Gauss Centre for Supercomputing. BADW-LRZ is part of the Bavarian Academy of Sciences and Humanities (Bayerische Akademie der Wissenschaften, BADW). It has been an active player in the area of high performance computing for more than 20 years and provides computing power on several different levels, offering its services to universities and to publicly funded research institutions. Currently, BADW-LRZ operates an IBM System X iData-Plex with nearly 150 thousand cores, as well as a number of general purpose and specialized clusters. An extension of SuperMUC is planned in a second phase with approximately twice as much peak performance. This system is one of the fastest general purpose supercomputers in the world, number 4 of the Top500 list, with a peak performance of 3 petaflop/s. The most significant innovation is its novel hot water cooling system pioneered by IBM, which will consume up to 30 percent less energy than a comparable air-cooled machine. Further energy savings are expected from its extensive energy monitoring capabilities and use of these data by the job scheduler and on the application level.

Expertise

BADW-LRZ has more than 170 employees, about 40 of which are working in national or international research projects. BADW-LRZ participates in education and research and supports the adaptation of suitable algorithms to its supercomputer architectures. This is carried out in close collaboration with international centers and research institutions, especially with the Competence Network for Technical and Scientific High Performance Computing (KONWIHR). BADW-LRZ operates a powerful communication infrastructure called Munich Scientific Network (MWN) and it is a competence center for data communication networks. BADW-LRZ is internationally known for expertise and research in security, network technologies, IT-Management, IT-operations, data archiving, high performance- and grid computing. BADW-LRZ is member of the Gauss Centre for Supercomputing (GCS), the alliance of the three national supercomputing centers in Germany (JSC-Jülich, HLRS Stuttgart, BADW-LRZ-Garching). On a European level, BADW-LRZ is member of the PRACE project and leads the future technologies work packages in PRACE-1IP and PRACE-2IP. BADW-LRZ also participates in the European Exascale Pro-jects DEEP, Mont-Blanc and EESI 2.

Role

In this project, BADW-LRZ will bring its expertise in monitoring and tuning applications. BADW-LRZ will also operate the high-end supercomputer which acts as one testbed for the tools. Finally, BADW-LRZ will provide applications from its user‘s base.

Key personnel

Matthias Brehm received his Ph.D. in meteorology from the University of Munich. He joined BADW-LRZ in 1986 to build up the supercomputing services. Since then he has extensive knowledge of numerous supercomputers and tools. He is now heading the Application Support Group.  The research interests include program optimization, user education & training, and automatic performance analysis and monitoring. He chaired ZKI Supercomputing in Germany. His current scientific involvement includes the ISAR project which is targeting integrated system and application analysis.

Result dissemination and exploitation

BADW-LRZ will use the results of AutoTune for its routine supercomputer operation. Jobs shall run at energy optimized frequency if the projected performance degradation is within a given policy range. BADW-LRZ will promote the tools and their usage in its regular tuning workshops and provide  assistance to users.

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