ICAMS / Interdisciplinary Centre for Advanced Materials Simulation

Publications

Parallel multiphase field simulations with OpenPhase

M. Tegeler, O. Shchyglo, R. Darvishi Kamachali, A. Monas, I. Steinbach, G. Sutmann.

Computer Physics Communications, 215, 173 - 187, (2017)

Simulation of normal grain growth with 240000 initial grains.

Abstract
The open-source software project OpenPhase allows the three-dimensional simulation of microstructural evolution using the multiphase field method. The core modules of OpenPhase and their implementation as well as their parallelization for a distributed-memory setting are presented. Especially communication and load-balancing strategies are discussed. Synchronization points are avoided by an increased halo-size, i.e. additional layers of ghost cells, which allow multiple stencil operations without data exchange. Load-balancing is considered via graph-partitioning and sub-domain decomposition. Results are presented for performance benchmarks as well as for a variety of applications, e.g. grain growth in polycrystalline materials, including a large number of phase fields as well as Mg–Al alloy solidification.


Keyword(s): materials science; phase field; parallel computing; load-balancing
DOI: 10.1016/j.cpc.2017.01.023
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