Large-Scale Lattice Boltzmann Simulations on Modern HPC Systems with the waLBerla Framework

Suffa P, Kemmler S, Holzer M, Köstler H, Rüde U (2025)

Publication Type: Conference contribution, Abstract of a poster

Publication year: 2025

Event location: Jülich Supercomputing Centre (JSC) Institute for Advanced Simulation (IAS) Forschungszentrum Jülich GmbH 52425 Jülich, Germany

Abstract

waLBerla is a highly scalable HPC framework for multiphysics simulations, offering exceptional performance on modern supercomputers. In this work, we leverage waLBerla to perform large-scale fluid-solid simulations using the lattice Boltzmann method (LBM) coupled with a solid phase. The simulations were executed on the JUWELS Booster cluster, utilizing its GPU-accelerated architecture to achieve high computational efficiency. Our study demonstrates excellent strong and weak scaling up to 1024 NVIDIA A100 GPUs, highlighting waLBerla’s capabilities for massively parallel simulations. Performance analysis and optimization strategies tailored for JUWELS Booster are presented, providing insights into efficient utilization of cutting-edge HPC systems for coupled multiphysics simulations.

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How to cite

APA:

Suffa, P., Kemmler, S., Holzer, M., Köstler, H., & Rüde, U. (2025). Large-Scale Lattice Boltzmann Simulations on Modern HPC Systems with the waLBerla Framework. Poster presentation at NIC Symposium 2025, Jülich Supercomputing Centre (JSC) Institute for Advanced Simulation (IAS) Forschungszentrum Jülich GmbH 52425 Jülich, Germany, DE.

MLA:

Suffa, Philipp, et al. "Large-Scale Lattice Boltzmann Simulations on Modern HPC Systems with the waLBerla Framework." Presented at NIC Symposium 2025, Jülich Supercomputing Centre (JSC) Institute for Advanced Simulation (IAS) Forschungszentrum Jülich GmbH 52425 Jülich, Germany 2025.

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