Efficient and scalable atmospheric dynamics simulations using non-conforming meshes
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| _version_ | 1866908605039509504 |
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| author | Orlando, Giuseppe Benacchio, Tommaso Bonaventura, Luca |
| author_facet | Orlando, Giuseppe Benacchio, Tommaso Bonaventura, Luca |
| contents | We present the massively parallel performance of a $h$-adaptive solver for atmosphere dynamics that allows for non-conforming mesh refinement. The numerical method is based on a Discontinuous Galerkin (DG) spatial discretization, highly scalable thanks to its data locality properties, and on a second order Implicit-Explicit Runge-Kutta (IMEX-RK) method for time discretization, particularly well suited for low Mach number flows. Simulations with non-conforming meshes for flows over orography can increase the accuracy of the local flow description without affecting the larger scales, which can be solved on coarser meshes. We show that the local refining procedure has no significant impact on the parallel performance and, therefore, both efficiency and scalability can be achieved in this framework. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_08129 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Efficient and scalable atmospheric dynamics simulations using non-conforming meshes Orlando, Giuseppe Benacchio, Tommaso Bonaventura, Luca Numerical Analysis Distributed, Parallel, and Cluster Computing Performance We present the massively parallel performance of a $h$-adaptive solver for atmosphere dynamics that allows for non-conforming mesh refinement. The numerical method is based on a Discontinuous Galerkin (DG) spatial discretization, highly scalable thanks to its data locality properties, and on a second order Implicit-Explicit Runge-Kutta (IMEX-RK) method for time discretization, particularly well suited for low Mach number flows. Simulations with non-conforming meshes for flows over orography can increase the accuracy of the local flow description without affecting the larger scales, which can be solved on coarser meshes. We show that the local refining procedure has no significant impact on the parallel performance and, therefore, both efficiency and scalability can be achieved in this framework. |
| title | Efficient and scalable atmospheric dynamics simulations using non-conforming meshes |
| topic | Numerical Analysis Distributed, Parallel, and Cluster Computing Performance |
| url | https://arxiv.org/abs/2408.08129 |