Accelerating the Hybrid Monte Carlo algorithm with ILU preconditioning
高能物理 - 格点
2007-05-23 v2
摘要
The pseudofermion action of the Hybrid Monte Carlo (HMC) algorithm for dynamical fermions is modified to directly incorporate Incomplete LU (ILU) factorisation. This reduces the stochastic noise and allows a larger molecular dynamics step-size to be taken, cutting the computational cost. Numerical tests using the two-flavour Schwinger model are presented, where a two-step ILU preconditioning of the even-odd fermion matrix allows the step-size to be increased by a factor of two over the standard even-odd formulation.
引用
@article{arxiv.hep-lat/0011080,
title = {Accelerating the Hybrid Monte Carlo algorithm with ILU preconditioning},
author = {Mike Peardon},
journal= {arXiv preprint arXiv:hep-lat/0011080},
year = {2007}
}
备注
14 pages with 5 figures (in 9 eps files). Uses epsf.sty. Added a reference