Massively Parallel Phase-field Simulations for Ternary Eutectic Directional Solidification

Conference contribution
(Original article)


Publication Details

Author(s): Bauer M, Hötzer J, Jainta M, Steinmetz P, Berghoff M, Schornbaum F, Godenschwager C, Köstler H, Nestler B, Rüde U
Editor(s): ACM
Publisher: ACM
Publishing place: New York
Publication year: 2015
Conference Proceedings Title: Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis
Pages range: 8:1 - 8:12
ISBN: 978-1-4503-3723-6
Language: English


Abstract


Microstructures forming during ternary eutectic directional solidification processes have significant influence on the macroscopic mechanical properties of metal alloys. For a realistic simulation, we use the well established thermodynamically consistent phase-field method and improve it with a new grand potential formulation to couple the concentration evolution. This extension is very compute intensive due to a temperature dependent diffusive concentration. We significantly extend previous simulations that have used simpler phase-field models or were performed on smaller domain sizes. The new method has been implemented within the massively parallel HPC framework waLBerla that is designed to exploit current supercomputers efficiently. We apply various optimization techniques, including buffering techniques, explicit SIMD kernel vectorization, and communication hiding. Simulations utilizing up to 262,144 cores have been run on three different supercomputing architectures and weak scalability results are shown. Additionally, a hierarchical, mesh-based data reduction strategy is developed to keep the I/O problem manageable at scale.



FAU Authors / FAU Editors

Bauer, Martin
Lehrstuhl für Informatik 10 (Systemsimulation)
Godenschwager, Christian
Lehrstuhl für Informatik 10 (Systemsimulation)
Köstler, Harald Prof. Dr.
Lehrstuhl für Informatik 10 (Systemsimulation)
Rüde, Ulrich Prof. Dr.
Lehrstuhl für Informatik 10 (Systemsimulation)
Schornbaum, Florian
Lehrstuhl für Informatik 10 (Systemsimulation)


External institutions with authors

Karlsruhe Institute of Technology (KIT)


How to cite

APA:
Bauer, M., Hötzer, J., Jainta, M., Steinmetz, P., Berghoff, M., Schornbaum, F.,... Rüde, U. (2015). Massively Parallel Phase-field Simulations for Ternary Eutectic Directional Solidification. In ACM (Eds.), Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis (pp. 8:1 - 8:12). Austin, US: New York: ACM.

MLA:
Bauer, Martin, et al. "Massively Parallel Phase-field Simulations for Ternary Eutectic Directional Solidification." Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis, Austin Ed. ACM, New York: ACM, 2015. 8:1 - 8:12.

BibTeX: 

Last updated on 2018-10-08 at 06:10