swMATH ID: 18266
Software Authors: Rossinelli, Diego; Hejazialhosseini, Babak; van Rees, Wim; Gazzola, Mattia; Bergdorf, Michael; Koumoutsakos, Petros
Description: MRAG-I2D: multi-resolution adapted grids for remeshed vortex methods on multicore architectures. We present MRAG-I2D, an open source software framework, for multiresolution simulations of two-dimensional, incompressible, viscous flows on multicore architectures. The spatiotemporal scales of the flow field are captured by remeshed vortex methods enhanced by high order average-interpolating wavelets and local time-stepping. The multiresolution solver of the Poisson equation relies on the development of a novel, tree-based multipole method. MRAG-I2D implements a number of HPC strategies to map efficiently the irregular computational workload of wavelet-adapted grids on multicore nodes. The capabilities of the present software are compared to the current state-of-the-art in terms of accuracy, compression rates and time-to-solution. Benchmarks include the inviscid evolution of an elliptical vortex, flow past an impulsively started cylinder at Re=40−40000 and simulations of self-propelled anguilliform swimmers. The results indicate that the present software has the same or better accuracy than state-of-the-art solvers while it exhibits unprecedented performance in terms of time-to-solution.
Homepage: http://www.sciencedirect.com/science/article/pii/S002199911500039X
Keywords: wavelets; adapted grids; local time-stepping; remeshing; multicore architectures; multipole methods; bluff-body flows
Related Software: Gerris; AMROC; ForestClaw; Murphy; LIFTPACK; AMReX; p4est; SAMRAI; Chombo; SLIC; GitHub; AMDiS; GADGET; Intel TBB; Cilk; AMRCLAW
Cited in: 12 Publications

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