Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 19, issue 19
Articles | Volume 19, issue 19
https://doi.org/10.5194/gmd-19-9781-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-19-9781-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 19
Development and technical paper
 | 
13 Oct 2026
Development and technical paper |  | 13 Oct 2026

High-performance geodynamics on GPUs using the PETSc CUDA backend (GAUZZ v1.0.0)

Kyeong-Min Lee, Deok-Kyu Jang, Cedric Thieulot, and Byung-Dal So

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Short summary
Geodynamic simulations of mantle flow repeatedly solve the Stokes equations at high memory and computational cost. We developed a Stokes solver for graphics processing units by coupling two open-source libraries. A single graphics processing unit solved the Stokes equations 6–11 times faster than a 32-core central processor, with the same accuracy. Two units further shortened the solution time of large problems. The doubled memory extended the maximum size of three-dimensional simulations.
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