Multi-Grid Lanczos
arXiv:1710.06884 · doi:10.1051/epjconf/201817514023
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.
6 pages, 7 figures; Talk given at the 35th International Symposium on Lattice Field Theory, 18-24 June 2017, Granada, Spain