https://doi.org/10.1051/epjconf/201817514023
Multi-Grid Lanczos
1
NVIDIA Corporation, 2701 San Tomas Expressway, Santa Clara, CA 95050, USA
2
Physics Department, Brookhaven National Laboratory, Upton, NY 11973, USA
* Speaker, e-mail: clehner@bnl.gov
Published online: 26 March 2018
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.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
