Large-Scale direct numerical simulations of turbulence using GPUs and modern Fortran

Karp M, Massaro D, Jansson N, Hart A, Wahlgren J, Schlatter P, Markidis S (2023)

Publication Type: Journal article

Publication year: 2023

Journal

International Journal of High Performance Computing Applications SAGE Publications (UK and US)

DOI: 10.1177/10943420231158616

Abstract

We present our approach to making direct numerical simulations of turbulence with applications in sustainable shipping. We use modern Fortran and the spectral element method to leverage and scale on supercomputers powered by the Nvidia A100 and the recent AMD Instinct MI250X GPUs, while still providing support for user software developed in Fortran. We demonstrate the efficiency of our approach by performing the world’s first direct numerical simulation of the flow around a Flettner rotor at Re = 30,000 and its interaction with a turbulent boundary layer. We present a performance comparison between the AMD Instinct MI250X and Nvidia A100 GPUs for scalable computational fluid dynamics. Our results show that one MI250X offers performance on par with two A100 GPUs and has a similar power efficiency based on readings from on-chip energy sensors.

Authors with CRIS profile

Philipp Schlatter

Involved external institutions

Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH) SE Sweden (SE) Hewlett Packard Enterprise Development LP GB United Kingdom (GB)

How to cite

APA:

Karp, M., Massaro, D., Jansson, N., Hart, A., Wahlgren, J., Schlatter, P., & Markidis, S. (2023). Large-Scale direct numerical simulations of turbulence using GPUs and modern Fortran. International Journal of High Performance Computing Applications. https://doi.org/10.1177/10943420231158616

MLA:

Karp, Martin, et al. "Large-Scale direct numerical simulations of turbulence using GPUs and modern Fortran." International Journal of High Performance Computing Applications (2023).

BibTeX: Download