A comparison of the shared-memory parallel programming models OpenMP, OpenACC and Kokkos in the context of implicit solvers for high-order FEM

We consider the application of three performance-portable programming models in the context of a high-order spectral element, implicit time-stepping solver for the Navier–Stokes equations. We aim to evaluate whether the use of these models allows code developers to deliver high-performance solvers f...

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Veröffentlicht in:Computer physics communications Jg. 255; S. 107245
Hauptverfasser: Eichstädt, Jan, Vymazal, Martin, Moxey, David, Peiró, Joaquim
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier B.V 01.10.2020
Schlagworte:
FEM
Helmholtz equation
Kokkos
OpenACC
OpenMP
Shared-memory parallel programming models
Helmholtz equation
Shared-memory parallel programming models
Kokkos
OpenACC
OpenMP
FEM
ISSN:0010-4655, 1879-2944
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Zusammenfassung:We consider the application of three performance-portable programming models in the context of a high-order spectral element, implicit time-stepping solver for the Navier–Stokes equations. We aim to evaluate whether the use of these models allows code developers to deliver high-performance solvers for computational fluid dynamics simulations that are capable of effectively utilising both many-core CPU and GPU architectures. Using the core elliptic solver for the Navier–Stokes equations as a benchmarking guide, we evaluate the performance of these models on a range of unstructured meshes and give guidelines for the translation of existing codebases and their data structures to these models.
ISSN:0010-4655
1879-2944
DOI:10.1016/j.cpc.2020.107245