Solution of the Dirac equation in lattice QCD using a domain decomposition method
Abstract
Efficient algorithms for the solution of partial differential equations on parallel computers are often based on domain decomposition methods. Schwarz preconditioners combined with standard Krylov space solvers are widely used in this context, and such a combination is shown here to perform very well in the case of the WilsonDirac equation in lattice QCD. In particular, with respect to evenodd preconditioned solvers, the communication overhead is significantly reduced, which allows the computational work to be distributed over a large number of processors with only small parallelization losses.
 Publication:

Computer Physics Communications
 Pub Date:
 January 2004
 DOI:
 10.1016/S00104655(03)004867
 arXiv:
 arXiv:heplat/0310048
 Bibcode:
 2004CoPhC.156..209L
 Keywords:

 High Energy Physics  Lattice
 EPrint:
 Plain TeX source, 21 pages, figures included