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A comparison of the shared-memory parallel programming models OpenMP, OpenACC and Kokkos in the context of implicit solvers for high-order FEM
Computer Physics Communications ( IF 7.2 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.cpc.2020.107245 Jan Eichstädt , Martin Vymazal , David Moxey , Joaquim Peiró
Computer Physics Communications ( IF 7.2 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.cpc.2020.107245 Jan Eichstädt , Martin Vymazal , David Moxey , Joaquim Peiró
Abstract 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.
更新日期：2020-10-01
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