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Croce, Roberto; Ruprecht, Daniel; Krause, Rolf (2017)
Publisher: Springer International Publishing
Languages: English
Types: Preprint
Subjects: Computer Science - Computational Engineering, Finance, and Science, Mathematics - Numerical Analysis
In this paper we combine the Parareal parallel-in-time method together with spatial parallelization and investigate this space-time parallel scheme by means of solving the three-dimensional incompressible Navier-Stokes equations. Parallelization of time stepping provides a new direction of parallelization and allows to employ additional cores to further speed up simulations after spatial parallelization has saturated. We report on numerical experiments performed on a Cray XE6, simulating a driven cavity flow with and without obstacles. Distributed memory parallelization is used in both space and time, featuring up to 2,048 cores in total. It is confirmed that the space-time-parallel method can provide speedup beyond the saturation of the spatial parallelization.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

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