Novel Approaches for Staggered Multigrid Algorithms

Jun 29, 2017, 10:15 AM


Evan Weinberg


Critical slowing down in the fermion sector is a leading obstacle facing the approach to the continuum in lattice gauge theory simulations. Adaptive multigrid ($\alpha$-MG) methods offer a solution to the resulting superlinear growth in the cost of iterative Krylov solves. Ongoing research has suggested that previously developed $\alpha$-MG methods, such as the successful formulation for Wilson-clover fermions, cannot be applied in a black-box fashion to other discretizations. In this talk I will expand on subtle issues offered by the staggered discretization. I will also discuss novel approaches that may sidestep these issues.

Title Novel Approaches for Staggered Multigrid Algorithms

Primary author


Alexei Strelchenko (F) Dr Richard Brower (Boston University) Dr Kate Clark (NVIDIA)

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