Parallel performance of h-type Adaptive Mesh Refinement for Nek5000
Peplinski A, Fischer PF, Schlatter P (2016)
Publication Type: Conference contribution
Publication year: 2016
Publisher: Association for Computing Machinery
Conference Proceedings Title: ACM International Conference Proceeding Series
Event location: Stockholm, SWE
ISBN: 9781450341226
Abstract
We discuss parallel performance of h-type Adaptive Mesh Refinement (AMR) developed for the high-order spectral element solver Nek5000 within CRESTA project. AMR is a desired feature of the future simulation software, as it gives possibility to increase the accuracy of numerical simulations at minimal computational cost by resolving particular region of the domain. At the same time it increases complexity of the communication pattern and introduces load imbalance, that can have negative effect on the code scalability. In this work we concentrate on the parallel performance of different tools required by AMR and the resulting algorithm limitations. Our implementation is based on available libraries for parallel mesh management (p4est) and partitioning (ParMetis) that provide necessary information for grid refinement/coarsening and redistribution performed within nonconforming version of Nek5000. For simplicity we consider advection-diffusion problem instead of the full Navies-Stokes equations and study both strong and weak scalability for the convected-cone problem. It is a synthetic test case allowing to test AMR with frequent dynamic mesh adjustments.
Authors with CRIS profile
Involved external institutions
Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH)
Sweden (SE)
University of Illinois at Urbana-Champaign
United States (USA) (US)
Sweden (SE)
University of Illinois at Urbana-Champaign
United States (USA) (US)
How to cite
APA:
Peplinski, A., Fischer, P.F., & Schlatter, P. (2016). Parallel performance of h-type Adaptive Mesh Refinement for Nek5000. In ACM International Conference Proceeding Series. Stockholm, SWE: Association for Computing Machinery.
MLA:
Peplinski, Adam, Paul F. Fischer, and Philipp Schlatter. "Parallel performance of h-type Adaptive Mesh Refinement for Nek5000." Proceedings of the 2016 Exascale Applications and Software Conference, EASC 2016, Stockholm, SWE Association for Computing Machinery, 2016.
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