Efficient smoothers for all-at-once multigrid methods for Poisson and Stokes control problems
In the present paper we concentrate on an important issue in constructing a good multigrid solver: the choice of an efficient smoother. We will introduce all-at-once multigrid solvers for optimal control problems which show robust convergence in the grid size and in the regularization parameter. We...
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Unspecified
2013
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