Multi-Grid Lanczos
High Energy Physics - Lattice
2018-04-18 v1
Abstract
We present a Lanczos algorithm utilizing multiple grids that reduces the memory requirements both on disk and in working memory by one order of magnitude for RBC/UKQCD's 48I and 64I ensembles at the physical pion mass. The precision of the resulting eigenvectors is on par with exact deflation.
Cite
@article{arxiv.1710.06884,
title = {Multi-Grid Lanczos},
author = {M. A. Clark and Chulwoo Jung and Christoph Lehner},
journal= {arXiv preprint arXiv:1710.06884},
year = {2018}
}
Comments
6 pages, 7 figures; Talk given at the 35th International Symposium on Lattice Field Theory, 18-24 June 2017, Granada, Spain