Seminars and Events

Massively parallel multiphase field simulations

Date/Time: 25.03.2015. 15:00
Place: 4th International Conference on Parallel, Distributed, Grid and Cloud Computing for Engineering, Dubrovnik, Croatia

Marvin Tegeler, Department of micromechanical and macroscopic modelling, Ruhr-Universität Bochum, Bochum, Alexander Monas, Department of Scale Bridging Thermodynamic and Kinetic Simulation, Ruhr-Universität Bochum, Bochum, Godehard Sutmann, Jülich Supercomputing Centre (JSC), Forschungszentrum Jülich, Jülich

The phase field method is an established technique for investigation of microstructure evolution during materials processing. Large scale three-dimensional simulations including multiple phase fields and multiple components have high requirements for memory and computational power. In this paper we present a distributed-memory parallelization of the phase field library OpenPhase. We consider load imbalances that arise during phase field calculations and propose techniques to balance the computational load efficiently among the processors. We show benchmarks using thousands of processes and use the parallelized OpenPhase for a three-dimensional simulation, that was previously only viable in two dimensions.

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