标题： 基于自适应聚合的格点威尔逊狄拉克算子领域分解多级方法：多级结果 显示英文标题

标题： An adaptive aggregation based domain decomposition multilevel method for the lattice wilson dirac operator: multilevel results

摘要： 在格点QCD计算中，大量工作用于求解威尔逊离散化狄拉克方程产生的线性系统。 我们首先展示了将两层DD-\alpha AMG方法扩展为基于我们并行MPI-C实现的真正多层方法的数值结果。 使用额外的层次具有成效，使得求解一个系统所花费的核心分钟数相比标准Krylov子空间方法减少了大约700倍，并且相对于两层方法又获得了1.7倍的速度提升。 显示英文摘要

摘要： In lattice QCD computations a substantial amount of work is spent in solving linear systems arising in Wilson's discretization of the Dirac equations. We show first numerical results of the extension of the two-level DD-\alpha AMG method to a true multilevel method based on our parallel MPI-C implementation. Using additional levels pays off, allowing to cut down the core minutes spent on one system solve by a factor of approximately 700 compared to standard Krylov subspace methods and yielding another speed-up of a factor of 1.7 over the two-level approach.