Massively Parallel Phase-field Simulations for Ternary Eutectic Directional Solidification

Beitrag bei einer Tagung
(Originalarbeit)


Details zur Publikation

Autor(en): Bauer M, Hötzer J, Jainta M, Steinmetz P, Berghoff M, Schornbaum F, Godenschwager C, Köstler H, Nestler B, Rüde U
Herausgeber: ACM
Verlag: ACM
Verlagsort: New York
Jahr der Veröffentlichung: 2015
Tagungsband: Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis
Seitenbereich: 8:1 - 8:12
ISBN: 978-1-4503-3723-6
Sprache: Englisch


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-Autoren / FAU-Herausgeber

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


Autor(en) der externen Einrichtung(en)
Karlsruhe Institute of Technology (KIT)


Zitierweisen

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: 

Zuletzt aktualisiert 2018-10-08 um 06:10