Deflation acceleration of lattice QCD simulations Export

@article{citeulike:3125617, abstract = {Close to the chiral limit, many calculations in numerical lattice QCD can potentially be accelerated using low-mode deflation techniques. In this paper it is shown that the recently introduced domain-decomposed deflation subspaces can be propagated along the field trajectories generated by the Hybrid Monte Carlo (HMC) algorithm with a modest effort. The quark forces that drive the simulation may then be computed using a deflation-accelerated solver for the lattice Dirac equation. As a consequence, the computer time required for the simulations is significantly reduced and an improved scaling behaviour of the simulation algorithm with respect to the quark mass is achieved.}, archivePrefix = {arXiv}, author = {L\&\#xfc;scher, Martin}, citeulike-article-id = {3125617}, citeulike-linkout-0 = {http://arxiv.org/abs/0710.5417}, citeulike-linkout-1 = {http://arxiv.org/pdf/0710.5417}, day = {29}, eprint = {0710.5417}, keywords = {algorithm, deflation, lattice, theory, updating}, month = {Oct}, posted-at = {2008-08-15 14:42:08}, priority = {2}, title = {Deflation acceleration of lattice QCD simulations}, url = {http://arxiv.org/abs/0710.5417}, year = {2007} }

TY - JOUR ID - citeulike:3125617 L3 - citeulike-article-id:3125617 N2 - Close to the chiral limit, many calculations in numerical lattice QCD can potentially be accelerated using low-mode deflation techniques. In this paper it is shown that the recently introduced domain-decomposed deflation subspaces can be propagated along the field trajectories generated by the Hybrid Monte Carlo (HMC) algorithm with a modest effort. The quark forces that drive the simulation may then be computed using a deflation-accelerated solver for the lattice Dirac equation. As a consequence, the computer time required for the simulations is significantly reduced and an improved scaling behaviour of the simulation algorithm with respect to the quark mass is achieved. TI - Deflation acceleration of lattice QCD simulations KW - algorithm KW - deflation KW - lattice KW - theory KW - updating AU - Lüscher, Martin PY - 2007/Oct/29/ UR - http://arxiv.org/abs/0710.5417 ER -