Optimizing Staggered Multigrid for Exascale performance
High Energy Physics - Lattice
2023-04-28 v1
Abstract
Adaptive multi-grid methods have proven very successful in dealing with critical slow down for the Wilson-Dirac solver in lattice gauge theory. Multi-grid algorithms developed for Staggered fermions using the K\"ahler-Dirac preconditioning~\cite{Brower:2018ymy} have shown remarkable success. In this work, we discuss the performance of this staggered multi-grid algorithm in four dimensions. We also demonstrate that offloading some components of a multi-shift solve to a multi-grid solver leads to a significant performance improvement in an existing MILC spectrum workflow on the Summit and Selene supercomputers.
Keywords
Cite
@article{arxiv.2212.12559,
title = {Optimizing Staggered Multigrid for Exascale performance},
author = {Venkitesh Ayyar and Richard Brower and M. A. Clark and Mathias Wagner and Evan Weinberg},
journal= {arXiv preprint arXiv:2212.12559},
year = {2023}
}
Comments
Submission to Proceedings of Lattice 2022: the 39th International Symposium on Lattice Field Theory, Bonn, Germany