Line data    Source code

       1             : //* This file is part of the MOOSE framework
       2             : //* https://mooseframework.inl.gov
       3             : //*
       4             : //* All rights reserved, see COPYRIGHT for full restrictions
       5             : //* https://github.com/idaholab/moose/blob/master/COPYRIGHT
       6             : //*
       7             : //* Licensed under LGPL 2.1, please see LICENSE for details
       8             : //* https://www.gnu.org/licenses/lgpl-2.1.html
       9             : 
      10             : #ifdef MOOSE_MFEM_ENABLED
      11             : 
      12             : #pragma once
      13             : 
      14             : #include "MFEMLinearSolverBase.h"
      15             : 
      16             : namespace Moose::MFEM
      17             : {
      18             : /**
      19             :  * Wrapper for mfem::MatrixFreeAMS solver that creates an mfem::MatrixFreeAMS solver from the
      20             :  * operator when set.
      21             :  */
      22             : class MatrixFreeAMS : public mfem::Solver
      23             : {
      24             : public:
      25             :   MatrixFreeAMS(mfem::Coefficient & alpha_coef,
      26             :                 mfem::Coefficient & beta_coef,
      27             :                 int inner_pi_its = 0,
      28             :                 int inner_g_its = 1);
      29             : 
      30             :   /// Set the bilinear form corresponding to the curl-curl problem being preconditioned
      31           7 :   void SetBilinearForm(mfem::ParBilinearForm & a) { _aform = &a; }
      32             :   /// Set the marker array labelling essential boundaries
      33           7 :   void SetBoundaryMarkers(mfem::Array<int> & ess_bdr_markers)
      34             :   {
      35           7 :     _ess_bdr_markers = ess_bdr_markers;
      36           7 :   }
      37             :   void SetOperator(const mfem::Operator & op) override;
      38         858 :   void Mult(const mfem::Vector & x, mfem::Vector & y) const override
      39             :   {
      40         858 :     _matrix_free_ams->Mult(x, y);
      41         858 :   }
      42             : 
      43             : private:
      44             :   std::unique_ptr<mfem::MatrixFreeAMS> _matrix_free_ams{nullptr};
      45             :   mfem::Coefficient & _alpha_coef;
      46             :   mfem::Coefficient & _beta_coef;
      47             :   const int _inner_pi_its;
      48             :   const int _inner_g_its;
      49             :   mfem::ParBilinearForm * _aform;
      50             :   mfem::Array<int> _ess_bdr_markers;
      51             : };
      52             : } // namespace Moose::MFEM
      53             : 
      54             : /**
      55             :  * Wrapper for mfem::MatrixFreeAMS solver.
      56             :  */
      57             : class MFEMMatrixFreeAMS : public Moose::MFEM::LinearSolverBase
      58             : {
      59             : public:
      60             :   static InputParameters validParams();
      61             : 
      62             :   MFEMMatrixFreeAMS(const InputParameters &);
      63             : 
      64             :   /// Updates the solver with the bilinear form, as MFEMMatrixFreeAMS is an LOR-based solver
      65             :   void SetupLOR(mfem::ParBilinearForm & a, mfem::Array<int> & ess_bdr_markers) override;
      66             : 
      67             : protected:
      68             :   void ConstructSolver() override;
      69             : 
      70             : private:
      71             :   mfem::Coefficient & _alpha_coef;
      72             :   mfem::Coefficient & _beta_coef;
      73             :   const int _inner_pi_its;
      74             :   const int _inner_g_its;
      75             : };
      76             : 
      77             : #endif