Line data Source code
1 : /*
2 : * Copyright (c) 2011-2015: G-CSC, Goethe University Frankfurt
3 : * Author: Andreas Vogel
4 : *
5 : * This file is part of UG4.
6 : *
7 : * UG4 is free software: you can redistribute it and/or modify it under the
8 : * terms of the GNU Lesser General Public License version 3 (as published by the
9 : * Free Software Foundation) with the following additional attribution
10 : * requirements (according to LGPL/GPL v3 §7):
11 : *
12 : * (1) The following notice must be displayed in the Appropriate Legal Notices
13 : * of covered and combined works: "Based on UG4 (www.ug4.org/license)".
14 : *
15 : * (2) The following notice must be displayed at a prominent place in the
16 : * terminal output of covered works: "Based on UG4 (www.ug4.org/license)".
17 : *
18 : * (3) The following bibliography is recommended for citation and must be
19 : * preserved in all covered files:
20 : * "Reiter, S., Vogel, A., Heppner, I., Rupp, M., and Wittum, G. A massively
21 : * parallel geometric multigrid solver on hierarchically distributed grids.
22 : * Computing and visualization in science 16, 4 (2013), 151-164"
23 : * "Vogel, A., Reiter, S., Rupp, M., Nägel, A., and Wittum, G. UG4 -- a novel
24 : * flexible software system for simulating pde based models on high performance
25 : * computers. Computing and visualization in science 16, 4 (2013), 165-179"
26 : *
27 : * This program is distributed in the hope that it will be useful,
28 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
29 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 : * GNU Lesser General Public License for more details.
31 : */
32 :
33 : #ifndef __H__UG__LIB_DISC__OPERATOR__LINEAR_OPERATOR__ASSEMBLED_LINEAR_OPERATOR_IMPL__
34 : #define __H__UG__LIB_DISC__OPERATOR__LINEAR_OPERATOR__ASSEMBLED_LINEAR_OPERATOR_IMPL__
35 :
36 : #include "assembled_linear_operator.h"
37 : #include "common/profiler/profiler.h"
38 :
39 : #define PROFILE_ASS
40 : #ifdef PROFILE_ASS
41 : #define ASS_PROFILE_FUNC() PROFILE_FUNC()
42 : #define ASS_PROFILE_BEGIN(name) PROFILE_BEGIN_GROUP(name, "discretization")
43 : #define ASS_PROFILE_END() PROFILE_END()
44 : #else
45 : #define ASS_PROFILE_FUNC()
46 : #define ASS_PROFILE_BEGIN(name)
47 : #define ASS_PROFILE_END()
48 : #endif
49 :
50 : namespace ug{
51 :
52 : template <typename TAlgebra>
53 : void
54 0 : AssembledLinearOperator<TAlgebra>::init(const vector_type& u)
55 : {
56 0 : if(m_spAss.invalid())
57 0 : UG_THROW("AssembledLinearOperator: Assembling routine not set.");
58 :
59 : // assemble matrix (depending on u, i.e. J(u))
60 : try{
61 0 : m_spAss->assemble_jacobian(*this, u, m_gridLevel);
62 : }
63 0 : UG_CATCH_THROW("AssembledLinearOperator: Cannot assemble Jacobi matrix.");
64 0 : }
65 :
66 : // Initialize the operator
67 : template <typename TAlgebra>
68 : void
69 0 : AssembledLinearOperator<TAlgebra>::init()
70 : {
71 0 : if(m_spAss.invalid())
72 0 : UG_THROW("AssembledLinearOperator: Assembling routine not set.");
73 :
74 : // create vector dummy
75 : vector_type dummy;
76 :
77 : // assemble only matrix
78 : try{
79 0 : m_spAss->assemble_linear(*this, dummy, m_gridLevel);
80 : }
81 0 : UG_CATCH_THROW("AssembledLinearOperator::init: Cannot assemble Matrix.");
82 0 : }
83 :
84 : // Initialize the operator
85 : template <typename TAlgebra>
86 : void
87 0 : AssembledLinearOperator<TAlgebra>::init_op_and_rhs(vector_type& b)
88 : {
89 : // todo: check that assembling is linear
90 :
91 0 : if(m_spAss.invalid())
92 0 : UG_THROW("AssembledLinearOperator: Assembling routine not set.");
93 :
94 : // assemble matrix and rhs in one loop
95 : try{
96 0 : m_spAss->assemble_linear(*this, b, m_gridLevel);
97 : }
98 0 : UG_CATCH_THROW("AssembledLinearOperator::init_op_and_rhs:"
99 : " Cannot assemble Matrix and Rhs.");
100 0 : }
101 :
102 : template <typename TAlgebra>
103 : void
104 0 : AssembledLinearOperator<TAlgebra>::apply(vector_type& d, const vector_type& c)
105 : {
106 : #ifdef UG_PARALLEL
107 : if(!c.has_storage_type(PST_CONSISTENT))
108 : UG_THROW("Inadequate storage format of Vector c.");
109 : #endif
110 :
111 : // perform check of sizes
112 0 : if(c.size() != this->num_cols() || d.size() != this->num_rows())
113 0 : UG_THROW("AssembledLinearOperator::apply: Size of matrix A ["<<
114 : this->num_rows() << " x " << this->num_cols() << "] must match the "
115 : "sizes of vectors x ["<<c.size()<<"], b ["<<d.size()<<"] for the "
116 : " operation b = A*x. Maybe the operator is not initialized ?");
117 :
118 : // Apply Matrix
119 : base_type::apply(d, c);
120 0 : }
121 :
122 : // Compute d := d - J(u)*c
123 : template <typename TAlgebra>
124 : void
125 0 : AssembledLinearOperator<TAlgebra>::apply_sub(vector_type& d, const vector_type& c)
126 : {
127 : #ifdef UG_PARALLEL
128 : if(!d.has_storage_type(PST_ADDITIVE))
129 : UG_THROW("Inadequate storage format of Vector d.");
130 : if(!c.has_storage_type(PST_CONSISTENT))
131 : UG_THROW("Inadequate storage format of Vector c.");
132 : #endif
133 :
134 : // check sizes
135 0 : if(c.size() != this->num_cols() || d.size() != this->num_rows())
136 0 : UG_THROW("AssembledLinearOperator::apply_sub: Size of matrix A ["<<
137 : this->num_rows() << " x " << this->num_cols() << "] must match the "
138 : "sizes of vectors x ["<<c.size()<<"], b ["<<d.size()<<"] for the "
139 : " operation b -= A*x. Maybe the operator is not initialized ?");
140 :
141 : // Apply Matrix
142 : base_type::matmul_minus(d,c);
143 0 : }
144 :
145 :
146 : template <typename TAlgebra>
147 0 : void AssembledLinearOperator<TAlgebra>::set_dirichlet_values(vector_type& u)
148 : {
149 : // checks
150 0 : if(m_spAss.invalid())
151 0 : UG_THROW("AssembledLinearOperator: Assembling routine not set.");
152 :
153 : // set dirichlet values etc.
154 : try{
155 0 : m_spAss->adjust_solution(u, m_gridLevel);
156 : }
157 0 : UG_CATCH_THROW("AssembledLinearOperator::set_dirichlet_values:"
158 : " Cannot assemble solution.");
159 0 : }
160 :
161 : ///////////////////////////////////////////////////////////////////////////////
162 : ///////////////////////////////////////////////////////////////////////////////
163 :
164 : /// help function to assemble a linear operator
165 : template <typename TAlgebra>
166 0 : void AssembleLinearOperatorRhsAndSolution
167 : (AssembledLinearOperator<TAlgebra>& op,
168 : typename TAlgebra::vector_type& u,
169 : typename TAlgebra::vector_type& b)
170 : {
171 : ASS_PROFILE_BEGIN(ASS_AssembleLinearOperatorRhsAndSolution);
172 :
173 : // initialize operator
174 : ASS_PROFILE_BEGIN(ASS_InitOperatorAndRhs);
175 : try{
176 0 : op.init_op_and_rhs(b);
177 0 : }UG_CATCH_THROW("Cannot init the operator (assembling failed).");
178 : ASS_PROFILE_END();
179 :
180 : // sets the dirichlet values in the solution
181 : ASS_PROFILE_BEGIN(ASS_SetDirValues);
182 : try{
183 0 : op.set_dirichlet_values(u);
184 0 : } UG_CATCH_THROW("Cannot set the dirichlet values in the solution.");
185 : ASS_PROFILE_END();
186 :
187 : ASS_PROFILE_END();
188 0 : }
189 :
190 :
191 : } // end namespace ug
192 :
193 : #endif /* __H__UG__LIB_DISC__OPERATOR__LINEAR_OPERATOR__ASSEMBLED_LINEAR_OPERATOR_IMPL__ */
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