The role of multigrid algorithms for LQCD
High Energy Physics - Lattice
2010-04-15 v1
Abstract
We report on the first successful QCD multigrid algorithm which demonstrates constant convergence rates independent of quark mass and lattice volume for the Wilson Dirac operator. The new ingredient is the adaptive method for constructing the near null space on which the coarse grid multigrid Dirac operator acts. In addition we speculate on future prospects for extending this algorithm to the Domain Wall and Staggered discretizations, its exceptional suitability for high performance GPU code and its potential impact on simulations at the physical pion mass.
Keywords
Cite
@article{arxiv.0912.2186,
title = {The role of multigrid algorithms for LQCD},
author = {Ronald Babich and James Brannick and Richard C. Brower and Michael A. Clark and Saul D. Cohen and James C. Osborn and Claudio Rebbi},
journal= {arXiv preprint arXiv:0912.2186},
year = {2010}
}
Comments
7 pages, 5 figures, Presented at the XXVII International Symposium on Lattice Field Theory, July 26-31, 2009, Peking University, Beijing, China