PDESoft 2024


Geometric multigrid for massively parallel, adaptive, large scale Stokes flow problems in deal.II

Timo Heister (Clemson University)

 15:30 - 17:15 on  Monday 1 Julyfor  15min

We present a matrix-free, massively parallel Implementation of geometric multigrid on adaptively refined meshes implemented in the deal.II finite element library. This method is applied to Stokes flow problems that appear on mantle convection problems. We compare global coarsening and local smoothing multigrid and show scaling to 100k MPI ranks.

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