Scaled ILU smoothers for Navier–Stokes pressure projection
Stephen Thomas,
Arielle Carr,
Paul Mullowney
et al.
Abstract:Incomplete LU (ILU) smoothers are effective in the algebraic multigrid (AMG) ‐cycle for reducing high‐frequency components of the error. However, the requisite direct triangular solves are comparatively slow on GPUs. Previous work has demonstrated the advantages of Jacobi iteration as an alternative to direct solution of these systems. Depending on the threshold and fill‐level parameters chosen, the factors can be highly nonnormal and Jacobi is unlikely to converge in a low number of iterations. We demonstrate… Show more
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