High Performance Systems

In spring 2015, the Leibniz Supercomputing Centre (Leibniz-Rechenzentrum, LRZ), installed their new Peta-Scale System SuperMUC Phase2. Selected users were invited for a 28 day extreme scale-out block operation during which they were allowed to use the full system for their applications. The following projects participated in the extreme scale-out workshop: BQCD (Quantum Physics), SeisSol (Geophysics, Seismics), GPI-2/GASPI (Toolkit for HPC), Seven-League Hydro (Astrophysics), ILBDC (Lattice Boltzmann CFD), Iphigenie (Molecular Dynamic), FLASH (Astrophysics), GADGET (Cosmological Dynamics), PSC (Plasma Physics), waLBerla (Lattice Boltzmann CFD), Musubi (Lattice Boltzmann CFD), Vertex3D (Stellar Astrophysics), CIAO (Combustion CFD), and LS1-Mardyn (Material Science). The projects were allowed to use the machine exclusively during the 28 day period, which corresponds to a total of 63.4 million core-hours, of which 43.8 million core-hours were used by the applications, resulting in a ut...

The dissemination level are indicated as follows: PU-Public, PP-Restricted to other participants (including the Commission Services), RE-Restricted to a group specified by the consortium (including the Commission Services). CO-Confidential, only for members of the consortium (including the Commission Services). D8.3.2 Final technical report and architecture proposal

Computational Sciences (CS) are challenging in many aspects, not only from the scientific domain they address, but especially also from the needs of the most sophisticated IT infrastructures to perform their research. Often, the latest and most powerful supercomputers, high-performance networks and high-capacity data storages are utilized for CS, while being offered, developed and operated by experts outside CS. This standard service approach has certainly been useful for many domains, but more and more often it represents a limitation to the needs of CS and the restrictions of the IT services. The partnership initiative CS established at the Leibniz Supercomputing Centre (LRZ) moves the collaboration between Computational Scientists and IT service providers to a new level, moving from a service-centered approach to an integrated partnership. The interface between them is a gateway to an improved collaboration between equal partners, such that future IT services address the requirements of CS in a better, optimized, and more efficient way. In addition, it sheds some light on future professional development.

this paper, we study a modular approach for the 3 D numerical simulation of the fluid structure interaction in a valve-driven micropump that has been designed for medical and environmental applications. For the structural part, we use ADINA and MSC/NASTRAN. The fluid flow simulation is done with the MAC-based Navier-Stokes solver NaSt3D which has been developed at our department. The coupling itself is realized via an outer iterative scheme.

this paper, we illustrate the considerations regarding the development of a modular software capable of solving a fluid structure interaction problem taken from microsystem technology. We describe a prototype realization and show some results of the simulation. Furthermore, we present a general design of an environment, which is in our opinion important for an automatization of the simulation process, and outline some of the requirements that ought to be met.

Appropriate and efficient representations of domains, objects, and scenes are an important issue in the fields of geometric modelling, numerical simulation, and visualization. Though various techniques have been developed and are successfully used as single-purpose solutions, there is still some lack of comprehensive approaches that allow to base modelling, simulation, and visualization on the same representation of the underlying geometry or that offer, at least, efficient interfaces between the different descriptions. In this paper, we want to discuss how hierarchical schemes can close this gap and, thus, allow a straightforward embedding of numerical simulations into a more general context.

this paper, we illustrate the considerations regarding the development of a modular software capable of solving a fluid structure interaction problem taken from microsystem technology. We describe a prototype realization and show some results of the simulation. Furthermore, we present a general design of an environment, which is in our opinion important for an automatization of the simulation process, and outline some of the requirements that ought to be met.