%0 Journal Article
%T Block Algorithms for Quark Propagator Calculation
%A Stephen M. Pickles
%A UKQCD Collaboration
%J Physics
%D 1997
%I arXiv
%R 10.1016/S0920-5632(97)00955-9
%X Computing quark propagators in lattice QCD is equivalent to solving large, sparse linear systems with multiple right-hand sides. Block algorithms attempt to accelerate the convergence of iterative Krylov-subspace methods by solving the multiple systems simultaneously. This paper compares a block generalisation of the quasi-minimal residual method (QMR), Block Conjugate Gradient on the normal equation, Block Lanczos and ($\gamma_5$-symmetric) Block BiConjugate Gradient.
%U http://arxiv.org/abs/hep-lat/9709082v1