From: Martin Kronbichler Date: Mon, 11 Mar 2024 12:30:03 +0000 (+0100) Subject: New test case X-Git-Tag: v9.6.0-rc1~486^2~1 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=644965bac1c42b1ba6562277b512786982bcc4c3;p=dealii.git New test case --- diff --git a/tests/lac/solver_gmres_02.cc b/tests/lac/solver_gmres_02.cc new file mode 100644 index 0000000000..bcf6aee22f --- /dev/null +++ b/tests/lac/solver_gmres_02.cc @@ -0,0 +1,137 @@ +// ------------------------------------------------------------------------ +// +// SPDX-License-Identifier: LGPL-2.1-or-later +// Copyright (C) 2022 - 2023 by the deal.II authors +// +// This file is part of the deal.II library. +// +// Part of the source code is dual licensed under Apache-2.0 WITH +// LLVM-exception OR LGPL-2.1-or-later. Detailed license information +// governing the source code and code contributions can be found in +// LICENSE.md and CONTRIBUTING.md at the top level directory of deal.II. +// +// ------------------------------------------------------------------------ + +// Check the path of SolverGMRES with dealii::Vector and +// LinearAlgebra::OrthogonalizationStrategy::classical_gram_schmidt. Apart +// from the vector type, this test case is the same as solver_gmres_01. + + +#include +#include +#include +#include +#include + +#include "../tests.h" + + +struct MyDiagonalMatrix +{ + MyDiagonalMatrix(const Vector &diagonal) + : diagonal(diagonal) + {} + + void + vmult(Vector &dst, const Vector &src) const + { + dst = src; + dst.scale(diagonal); + } + + void + vmult(BlockVector &dst, const BlockVector &src) const + { + dst = src; + for (unsigned int b = 0; b < src.n_blocks(); ++b) + dst.block(0).scale(diagonal); + } + + unsigned int + m() const + { + return diagonal.size(); + } + + const Vector &diagonal; +}; + + + +SolverControl::State +monitor_norm(const unsigned int iteration, + const double check_value, + const Vector &) +{ + deallog << " estimated residual at iteration " << iteration << ": " + << check_value << std::endl; + return SolverControl::success; +} + + + +SolverControl::State +monitor_norm_block(const unsigned int iteration, + const double check_value, + const BlockVector &) +{ + deallog << " estimated residual at iteration " << iteration << ": " + << check_value << std::endl; + return SolverControl::success; +} + + +int +main() +{ + initlog(); + + // Create diagonal matrix with entries between 1 and 30 + Vector matrix_entries_(30); + matrix_entries_ = 1.0; + MyDiagonalMatrix unit_matrix(matrix_entries_); + + Vector matrix_entries(unit_matrix.m()); + for (unsigned int i = 0; i < unit_matrix.m(); ++i) + matrix_entries(i) = i + 1; + MyDiagonalMatrix matrix(matrix_entries); + + Vector rhs(unit_matrix.m()); + Vector sol(unit_matrix.m()); + rhs = 1.; + + { + deallog << "Solve with PreconditionIdentity: " << std::endl; + SolverControl control(40, 1e-4); + SolverGMRES>::AdditionalData data3(8); + data3.orthogonalization_strategy = + LinearAlgebra::OrthogonalizationStrategy::classical_gram_schmidt; + SolverGMRES> solver(control, data3); + solver.connect(&monitor_norm); + solver.solve(matrix, sol, rhs, PreconditionIdentity()); + + deallog << "Solve with diagonal preconditioner: " << std::endl; + sol = 0; + solver.solve(matrix, sol, rhs, unit_matrix); + } + + { + BlockVector rhs_(1); + BlockVector sol_(1); + rhs_.block(0) = rhs; + sol_.block(0) = sol; + + deallog << "Solve with PreconditionIdentity: " << std::endl; + SolverControl control(40, 1e-4); + SolverGMRES>::AdditionalData data3(8); + data3.orthogonalization_strategy = + LinearAlgebra::OrthogonalizationStrategy::classical_gram_schmidt; + SolverGMRES> solver(control, data3); + solver.connect(&monitor_norm_block); + solver.solve(matrix, sol_, rhs_, PreconditionIdentity()); + + deallog << "Solve with diagonal preconditioner: " << std::endl; + sol_ = 0; + solver.solve(matrix, sol_, rhs_, unit_matrix); + } +} diff --git a/tests/lac/solver_gmres_02.output b/tests/lac/solver_gmres_02.output new file mode 100644 index 0000000000..2d729f866d --- /dev/null +++ b/tests/lac/solver_gmres_02.output @@ -0,0 +1,137 @@ + +DEAL::Solve with PreconditionIdentity: +DEAL:GMRES::Starting value 5.47723 +DEAL:GMRES:: estimated residual at iteration 0: 5.47723 +DEAL:GMRES:: estimated residual at iteration 1: 2.67042 +DEAL:GMRES:: estimated residual at iteration 2: 1.70538 +DEAL:GMRES:: estimated residual at iteration 3: 1.20190 +DEAL:GMRES:: estimated residual at iteration 4: 0.884567 +DEAL:GMRES:: estimated residual at iteration 5: 0.662215 +DEAL:GMRES:: estimated residual at iteration 6: 0.496462 +DEAL:GMRES:: estimated residual at iteration 6: 0.496462 +DEAL:GMRES:: estimated residual at iteration 7: 0.419909 +DEAL:GMRES:: estimated residual at iteration 8: 0.339229 +DEAL:GMRES:: estimated residual at iteration 9: 0.260767 +DEAL:GMRES:: estimated residual at iteration 10: 0.189115 +DEAL:GMRES:: estimated residual at iteration 11: 0.126467 +DEAL:GMRES:: estimated residual at iteration 12: 0.0736025 +DEAL:GMRES:: estimated residual at iteration 12: 0.0736025 +DEAL:GMRES:: estimated residual at iteration 13: 0.0505275 +DEAL:GMRES:: estimated residual at iteration 14: 0.0360998 +DEAL:GMRES:: estimated residual at iteration 15: 0.0253697 +DEAL:GMRES:: estimated residual at iteration 16: 0.0184200 +DEAL:GMRES:: estimated residual at iteration 17: 0.0142333 +DEAL:GMRES:: estimated residual at iteration 18: 0.0116662 +DEAL:GMRES:: estimated residual at iteration 18: 0.0116662 +DEAL:GMRES:: estimated residual at iteration 19: 0.00989870 +DEAL:GMRES:: estimated residual at iteration 20: 0.00800703 +DEAL:GMRES:: estimated residual at iteration 21: 0.00604107 +DEAL:GMRES:: estimated residual at iteration 22: 0.00431736 +DEAL:GMRES:: estimated residual at iteration 23: 0.00304828 +DEAL:GMRES:: estimated residual at iteration 24: 0.00203679 +DEAL:GMRES:: estimated residual at iteration 24: 0.00203679 +DEAL:GMRES:: estimated residual at iteration 25: 0.00141669 +DEAL:GMRES:: estimated residual at iteration 26: 0.00101755 +DEAL:GMRES:: estimated residual at iteration 27: 0.000724887 +DEAL:GMRES:: estimated residual at iteration 28: 0.000535249 +DEAL:GMRES:: estimated residual at iteration 29: 0.000423665 +DEAL:GMRES:: estimated residual at iteration 30: 0.000358414 +DEAL:GMRES:: estimated residual at iteration 30: 0.000358414 +DEAL:GMRES:: estimated residual at iteration 31: 0.000307521 +DEAL:GMRES:: estimated residual at iteration 32: 0.000247031 +DEAL:GMRES:: estimated residual at iteration 33: 0.000183614 +DEAL:GMRES:: estimated residual at iteration 34: 0.000129847 +DEAL:GMRES::Convergence step 35 value 9.20930e-05 +DEAL:GMRES:: estimated residual at iteration 35: 9.20930e-05 +DEAL::Solve with diagonal preconditioner: +DEAL:GMRES::Starting value 5.47723 +DEAL:GMRES:: estimated residual at iteration 0: 5.47723 +DEAL:GMRES:: estimated residual at iteration 1: 2.67042 +DEAL:GMRES:: estimated residual at iteration 2: 1.70538 +DEAL:GMRES:: estimated residual at iteration 3: 1.20190 +DEAL:GMRES:: estimated residual at iteration 4: 0.884567 +DEAL:GMRES:: estimated residual at iteration 5: 0.662215 +DEAL:GMRES:: estimated residual at iteration 6: 0.496462 +DEAL:GMRES:: estimated residual at iteration 6: 0.496462 +DEAL:GMRES:: estimated residual at iteration 7: 0.419909 +DEAL:GMRES:: estimated residual at iteration 8: 0.339229 +DEAL:GMRES:: estimated residual at iteration 9: 0.260767 +DEAL:GMRES:: estimated residual at iteration 10: 0.189115 +DEAL:GMRES:: estimated residual at iteration 11: 0.126467 +DEAL:GMRES:: estimated residual at iteration 12: 0.0736025 +DEAL:GMRES:: estimated residual at iteration 12: 0.0736025 +DEAL:GMRES:: estimated residual at iteration 13: 0.0505275 +DEAL:GMRES:: estimated residual at iteration 14: 0.0360998 +DEAL:GMRES:: estimated residual at iteration 15: 0.0253697 +DEAL:GMRES:: estimated residual at iteration 16: 0.0184200 +DEAL:GMRES:: estimated residual at iteration 17: 0.0142333 +DEAL:GMRES:: estimated residual at iteration 18: 0.0116662 +DEAL:GMRES:: estimated residual at iteration 18: 0.0116662 +DEAL:GMRES:: estimated residual at iteration 19: 0.00989870 +DEAL:GMRES:: estimated residual at iteration 20: 0.00800703 +DEAL:GMRES:: estimated residual at iteration 21: 0.00604107 +DEAL:GMRES:: estimated residual at iteration 22: 0.00431736 +DEAL:GMRES:: estimated residual at iteration 23: 0.00304828 +DEAL:GMRES:: estimated residual at iteration 24: 0.00203679 +DEAL:GMRES:: estimated residual at iteration 24: 0.00203679 +DEAL:GMRES:: estimated residual at iteration 25: 0.00141669 +DEAL:GMRES:: estimated residual at iteration 26: 0.00101755 +DEAL:GMRES:: estimated residual at iteration 27: 0.000724887 +DEAL:GMRES:: estimated residual at iteration 28: 0.000535249 +DEAL:GMRES:: estimated residual at iteration 29: 0.000423665 +DEAL:GMRES:: estimated residual at iteration 30: 0.000358414 +DEAL:GMRES:: estimated residual at iteration 30: 0.000358414 +DEAL:GMRES:: estimated residual at iteration 31: 0.000307521 +DEAL:GMRES:: estimated residual at iteration 32: 0.000247031 +DEAL:GMRES:: estimated residual at iteration 33: 0.000183614 +DEAL:GMRES:: estimated residual at iteration 34: 0.000129847 +DEAL:GMRES::Convergence step 35 value 9.20930e-05 +DEAL:GMRES:: estimated residual at iteration 35: 9.20930e-05 +DEAL::Solve with PreconditionIdentity: +DEAL:GMRES::Starting value 9.20930e-05 +DEAL:GMRES::Convergence step 0 value 9.20930e-05 +DEAL:GMRES:: estimated residual at iteration 0: 9.20930e-05 +DEAL::Solve with diagonal preconditioner: +DEAL:GMRES::Starting value 5.47723 +DEAL:GMRES:: estimated residual at iteration 0: 5.47723 +DEAL:GMRES:: estimated residual at iteration 1: 2.67042 +DEAL:GMRES:: estimated residual at iteration 2: 1.70538 +DEAL:GMRES:: estimated residual at iteration 3: 1.20190 +DEAL:GMRES:: estimated residual at iteration 4: 0.884567 +DEAL:GMRES:: estimated residual at iteration 5: 0.662215 +DEAL:GMRES:: estimated residual at iteration 6: 0.496462 +DEAL:GMRES:: estimated residual at iteration 6: 0.496462 +DEAL:GMRES:: estimated residual at iteration 7: 0.419909 +DEAL:GMRES:: estimated residual at iteration 8: 0.339229 +DEAL:GMRES:: estimated residual at iteration 9: 0.260767 +DEAL:GMRES:: estimated residual at iteration 10: 0.189115 +DEAL:GMRES:: estimated residual at iteration 11: 0.126467 +DEAL:GMRES:: estimated residual at iteration 12: 0.0736025 +DEAL:GMRES:: estimated residual at iteration 12: 0.0736025 +DEAL:GMRES:: estimated residual at iteration 13: 0.0505275 +DEAL:GMRES:: estimated residual at iteration 14: 0.0360998 +DEAL:GMRES:: estimated residual at iteration 15: 0.0253697 +DEAL:GMRES:: estimated residual at iteration 16: 0.0184200 +DEAL:GMRES:: estimated residual at iteration 17: 0.0142333 +DEAL:GMRES:: estimated residual at iteration 18: 0.0116662 +DEAL:GMRES:: estimated residual at iteration 18: 0.0116662 +DEAL:GMRES:: estimated residual at iteration 19: 0.00989870 +DEAL:GMRES:: estimated residual at iteration 20: 0.00800703 +DEAL:GMRES:: estimated residual at iteration 21: 0.00604107 +DEAL:GMRES:: estimated residual at iteration 22: 0.00431736 +DEAL:GMRES:: estimated residual at iteration 23: 0.00304828 +DEAL:GMRES:: estimated residual at iteration 24: 0.00203679 +DEAL:GMRES:: estimated residual at iteration 24: 0.00203679 +DEAL:GMRES:: estimated residual at iteration 25: 0.00141669 +DEAL:GMRES:: estimated residual at iteration 26: 0.00101755 +DEAL:GMRES:: estimated residual at iteration 27: 0.000724887 +DEAL:GMRES:: estimated residual at iteration 28: 0.000535249 +DEAL:GMRES:: estimated residual at iteration 29: 0.000423665 +DEAL:GMRES:: estimated residual at iteration 30: 0.000358414 +DEAL:GMRES:: estimated residual at iteration 30: 0.000358414 +DEAL:GMRES:: estimated residual at iteration 31: 0.000307521 +DEAL:GMRES:: estimated residual at iteration 32: 0.000247031 +DEAL:GMRES:: estimated residual at iteration 33: 0.000183614 +DEAL:GMRES:: estimated residual at iteration 34: 0.000129847 +DEAL:GMRES::Convergence step 35 value 9.20930e-05 +DEAL:GMRES:: estimated residual at iteration 35: 9.20930e-05