| 1 | /*
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| 2 | * vmg - a versatile multigrid solver
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| 3 | * Copyright (C) 2012 Institute for Numerical Simulation, University of Bonn
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| 4 | *
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| 5 | * vmg is free software: you can redistribute it and/or modify
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| 6 | * it under the terms of the GNU General Public License as published by
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| 7 | * the Free Software Foundation, either version 3 of the License, or
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| 8 | * (at your option) any later version.
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| 9 | *
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| 10 | * vmg is distributed in the hope that it will be useful,
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | * GNU General Public License for more details.
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| 14 | *
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| 15 | * You should have received a copy of the GNU General Public License
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| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>.
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| 17 | */
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| 18 |
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| 19 | /**
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| 20 | * @file tempgrid.cpp
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| 21 | * @author Julian Iseringhausen <isering@ins.uni-bonn.de>
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| 22 | * @date Mon Apr 18 12:55:05 2011
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| 23 | *
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| 24 | * @brief VMG::TempGrid
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| 25 | *
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| 26 | */
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| 27 |
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| 28 | #ifdef HAVE_CONFIG_H
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| 29 | #include <config.h>
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| 30 | #endif
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| 31 |
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| 32 | #include "base/discretization.hpp"
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| 33 | #include "base/interface.hpp"
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| 34 | #include "base/stencil.hpp"
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| 35 | #include "comm/comm.hpp"
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| 36 | #include "grid/grid_index_translations.hpp"
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| 37 | #include "grid/tempgrid.hpp"
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| 38 | #include "mg.hpp"
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| 39 |
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| 40 | using namespace VMG;
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| 41 |
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| 42 | void TempGrid::SetProperties(const Grid& rhs)
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| 43 | {
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| 44 | local = rhs.Local();
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| 45 | global = rhs.Global();
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| 46 | extent = rhs.Extent();
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| 47 | iterators.SetSubgrids(rhs.Local());
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| 48 | level = rhs.Level();
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| 49 | Allocate();
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| 50 | }
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| 51 |
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| 52 | void TempGrid::SetProperties(const GlobalIndices& global_, const LocalIndices& local_, const SpatialExtent& extent_)
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| 53 | {
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| 54 | local = local_;
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| 55 | global = global_;
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| 56 | extent = extent_;
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| 57 | iterators.SetSubgrids(local_);
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| 58 | Allocate();
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| 59 | }
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| 60 |
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| 61 | void TempGrid::SetProperties(const Index& size, const Index& halo_size,
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| 62 | const Vector& spatial_begin, const Vector& spatial_end)
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| 63 | {
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| 64 | global.LocalBegin() = 0;
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| 65 | global.LocalEnd() = size;
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| 66 | global.LocalSize() = size;
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| 67 | global.GlobalFinerBegin() = 0;
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| 68 | global.GlobalFinerEnd() = 0;
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| 69 | global.GlobalFinerSize() = 0;
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| 70 | global.LocalFinerBegin() = 0;
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| 71 | global.LocalFinerEnd() = 0;
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| 72 | global.LocalFinerSize() = 0;
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| 73 | global.FinestAbsBegin() = 0;
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| 74 | global.FinestAbsEnd() = size;
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| 75 | global.FinestAbsSize() = size;
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| 76 | global.GlobalSize() = size;
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| 77 | global.BoundaryType() = BTUndefined;
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| 78 |
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| 79 | local.Begin() = halo_size;
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| 80 | local.End() = this->local.Begin() + size;
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| 81 | local.Size() = size;
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| 82 | local.SizeTotal() = size + 2 * halo_size;
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| 83 | local.HaloBegin1() = 0;
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| 84 | local.HaloEnd1() = halo_size;
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| 85 | local.HaloSize1() = halo_size;
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| 86 | local.HaloBegin2() = this->local.End();
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| 87 | local.HaloEnd2() = this->local.HaloBegin2() = halo_size;
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| 88 | local.HaloSize2() = halo_size;
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| 89 | local.BoundaryBegin1() = 0;
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| 90 | local.BoundaryEnd1() = 0;
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| 91 | local.BoundarySize1() = 0;
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| 92 | local.BoundaryBegin2() = 0;
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| 93 | local.BoundaryEnd2() = 0;
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| 94 | local.BoundarySize2() = 0;
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| 95 | local.FinerBegin() = 0;
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| 96 | local.FinerEnd() = 0;
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| 97 | local.FinerSize() = 0;
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| 98 |
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| 99 | extent.Begin() = spatial_begin;
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| 100 | extent.End() = spatial_end;
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| 101 | extent.Size() = spatial_end - spatial_begin;
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| 102 | extent.MeshWidth() = this->extent.Size() / static_cast<Vector>(size-1);
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| 103 |
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| 104 | Allocate();
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| 105 | }
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| 106 |
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| 107 | void TempGrid::SetPropertiesToFiner(const Grid& grid, const Boundary& boundary)
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| 108 | {
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| 109 | assert(grid.Father() != NULL);
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| 110 | assert(grid.Level() < grid.Father()->MaxLevel());
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| 111 |
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| 112 | const Grid& grid_finer = (*grid.Father())(grid.Level()+1);
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| 113 | const Index off = GridIndexTranslations::EndOffset(boundary);
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| 114 |
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| 115 | level = grid.Level() + 1;
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| 116 |
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| 117 | global.GlobalFinerBegin() = 0;
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| 118 | global.GlobalFinerEnd() = 0;
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| 119 | global.GlobalFinerSize() = 0;
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| 120 |
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| 121 | global.LocalFinerBegin() = 0;
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| 122 | global.LocalFinerEnd() = 0;
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| 123 | global.LocalFinerSize() = 0;
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| 124 |
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| 125 | global.FinestAbsBegin() = grid_finer.Global().FinestAbsBegin();
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| 126 | global.FinestAbsEnd() = grid_finer.Global().FinestAbsEnd();
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| 127 | global.FinestAbsSize() = grid_finer.Global().FinestAbsSize();
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| 128 |
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| 129 | global.GlobalSize() = 2 * (grid.Global().GlobalFinerSize() - off) + off;
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| 130 | global.BoundaryType() = grid_finer.Global().BoundaryType();
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| 131 |
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| 132 | global.LocalBegin() = 2 * grid.Global().LocalBegin().Clamp(grid.Global().GlobalFinerBegin(), grid.Global().GlobalFinerEnd());
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| 133 | global.LocalEnd() = 2 * grid.Global().LocalEnd().Clamp(grid.Global().GlobalFinerBegin(), grid.Global().GlobalFinerEnd()) - off;
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| 134 |
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| 135 | global.LocalSize() = global.LocalEnd() - global.LocalBegin();
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| 136 | if (global.LocalSize().Product() == 0) {
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| 137 | global.LocalBegin() = 0;
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| 138 | global.LocalEnd() = 0;
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| 139 | global.LocalSize() = 0;
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| 140 | global.BoundaryType() = EmptyGrid;
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| 141 | }
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| 142 |
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| 143 | local.FinerBegin() = 0;
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| 144 | local.FinerEnd() = 0;
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| 145 | local.FinerSize() = 0;
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| 146 |
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| 147 | local.Begin() = 0;
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| 148 | local.End() = global.LocalSize();
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| 149 | local.Size() = global.LocalSize();
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| 150 | local.SizeTotal() = global.LocalSize();
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| 151 |
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| 152 | local.HaloBegin1() = 0;
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| 153 | local.HaloEnd1() = 0;
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| 154 | local.HaloBegin2() = 0;
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| 155 | local.HaloEnd2() = 0;
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| 156 |
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| 157 | local.BoundaryBegin1() = 0;
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| 158 | local.BoundaryEnd1() = 0;
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| 159 | local.BoundaryBegin2() = 0;
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| 160 | local.BoundaryEnd2() = 0;
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| 161 |
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| 162 | for (int i=0; i<3; ++i) {
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| 163 |
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| 164 | if (grid.Local().HaloSize1()[i] > 0) {
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| 165 | local.Begin()[i] += grid.Local().HaloSize1()[i];
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| 166 | local.End()[i] += grid.Local().HaloSize1()[i];
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| 167 | local.HaloEnd1()[i] = grid.Local().HaloSize1()[i];
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| 168 | }
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| 169 |
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| 170 | if (grid.Local().BoundarySize1()[i] > 0) {
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| 171 | local.Begin()[i] += grid.Local().BoundarySize1()[i];
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| 172 | local.BoundaryEnd1()[i] = grid.Local().BoundarySize1()[i];
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| 173 | }
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| 174 |
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| 175 | if (grid.Local().HaloSize2()[i] > 0) {
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| 176 | local.HaloBegin2()[i] = local.End()[i];
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| 177 | local.HaloEnd2()[i] = local.End()[i] + grid.Local().HaloSize2()[i];
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| 178 | }
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| 179 |
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| 180 | if (grid.Local().BoundarySize2()[i] > 0) {
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| 181 | local.End()[i] -= grid.Local().BoundarySize2()[i];
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| 182 | local.BoundaryBegin2()[i] = local.End()[i];
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| 183 | local.BoundaryEnd2()[i] = local.End()[i]+grid.Local().BoundarySize2()[i];
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| 184 | }
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| 185 |
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| 186 | }
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| 187 |
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| 188 | local.HaloSize1() = local.HaloEnd1() - local.HaloBegin1();
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| 189 | local.HaloSize2() = local.HaloEnd2() - local.HaloBegin2();
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| 190 | local.BoundarySize1() = local.BoundaryEnd1() - local.BoundaryBegin1();
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| 191 | local.BoundarySize2() = local.BoundaryEnd2() - local.BoundaryBegin2();
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| 192 | local.Size() = local.End() - local.Begin();
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| 193 | local.SizeTotal() = local.Size() +
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| 194 | local.HaloSize1() + local.HaloSize2() +
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| 195 | local.BoundarySize1() + local.BoundarySize2();
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| 196 |
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| 197 | extent.Size() = grid.Extent().Size();
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| 198 | extent.Begin() = grid.Extent().Begin();
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| 199 | extent.End() = grid.Extent().End();
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| 200 | extent.MeshWidth() = 0.5 * grid.Extent().MeshWidth();
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| 201 |
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| 202 | iterators.SetSubgrids(local);
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| 203 |
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| 204 | Allocate();
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| 205 | }
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| 206 |
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| 207 | void TempGrid::SetPropertiesToCoarser(const Grid& grid, const Boundary& boundary)
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| 208 | {
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| 209 | assert(grid.Father() != NULL);
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| 210 | assert(grid.Level() > grid.Father()->MinLevel());
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| 211 |
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| 212 | const Grid& grid_coarser = (*grid.Father())(grid.Level()-1);
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| 213 | const Index off = GridIndexTranslations::EndOffset(boundary);
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| 214 |
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| 215 | level = grid.Level() - 1;
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| 216 |
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| 217 | global.GlobalFinerBegin() = grid_coarser.Global().GlobalFinerBegin();
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| 218 | global.GlobalFinerEnd() = grid_coarser.Global().GlobalFinerEnd();
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| 219 | global.GlobalFinerSize() = grid_coarser.Global().GlobalFinerSize();
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| 220 |
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| 221 | global.FinestAbsBegin() = grid.Global().FinestAbsBegin();
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| 222 | global.FinestAbsEnd() = grid.Global().FinestAbsEnd();
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| 223 | global.FinestAbsSize() = grid.Global().FinestAbsSize();
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| 224 |
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| 225 | global.GlobalSize() = (grid.Global().GlobalSize() - off)/2 + off;
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| 226 | global.BoundaryType() = grid_coarser.Global().BoundaryType();
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| 227 |
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| 228 | global.LocalBegin() = grid.Global().LocalBegin();
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| 229 | global.LocalEnd() = grid.Global().LocalEnd();
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| 230 | GridIndexTranslations::FineToCoarse(global.LocalBegin(), global.LocalEnd());
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| 231 |
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| 232 | global.LocalBegin() += grid_coarser.Global().GlobalFinerBegin();
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| 233 | global.LocalEnd() += grid_coarser.Global().GlobalFinerBegin();
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| 234 |
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| 235 | global.LocalSize() = global.LocalEnd() - global.LocalBegin();
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| 236 |
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| 237 | if (global.LocalSize().Product() == 0) {
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| 238 | global.LocalBegin() = 0;
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| 239 | global.LocalEnd() = 0;
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| 240 | global.LocalSize() = 0;
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| 241 | global.BoundaryType() = EmptyGrid;
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| 242 | }
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| 243 |
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| 244 | global.LocalFinerBegin() = global.LocalBegin();
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| 245 | global.LocalFinerEnd() = global.LocalEnd();
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| 246 | global.LocalFinerSize() = global.LocalSize();
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| 247 |
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| 248 | local.SizeTotal() = global.LocalSize();
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| 249 | local.Size() = global.LocalSize();
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| 250 | local.Begin() = 0;
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| 251 | local.End() = global.LocalSize();
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| 252 |
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| 253 | for (int i=0; i<3; ++i) {
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| 254 |
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| 255 | if (grid.Local().HaloSize1()[i] > 0) {
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| 256 | local.SizeTotal()[i] += grid.Local().HaloSize1()[i];
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| 257 | local.Begin()[i] += grid.Local().HaloSize1()[i];
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| 258 | local.End()[i] += grid.Local().HaloSize1()[i];
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| 259 | local.HaloBegin1()[i] = 0;
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| 260 | local.HaloEnd1()[i] = grid.Local().HaloSize1()[i];
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| 261 | }else {
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| 262 | local.HaloBegin1()[i] = 0;
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| 263 | local.HaloEnd1()[i] = 0;
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| 264 | }
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| 265 |
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| 266 | if (grid.Local().BoundarySize1()[i]> 0) {
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| 267 | local.Size()[i] -= grid.Local().BoundarySize1()[i];
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| 268 | local.Begin()[i] += grid.Local().BoundarySize1()[i];
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| 269 | local.BoundaryBegin1()[i] = 0;
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| 270 | local.BoundaryEnd1()[i] = grid.Local().BoundarySize1()[i];
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| 271 | }else {
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| 272 | local.BoundaryBegin1()[i] = 0;
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| 273 | local.BoundaryEnd1()[i] = 0;
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| 274 | }
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| 275 |
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| 276 | if (grid.Local().HaloSize2()[i] > 0) {
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| 277 | local.SizeTotal()[i] += grid.Local().HaloSize2()[i];
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| 278 | local.HaloBegin2()[i] = local.End()[i];
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| 279 | local.HaloEnd2()[i] = local.End()[i] + grid.Local().HaloSize2()[i];
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| 280 | }else {
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| 281 | local.HaloBegin2()[i] = 0;
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| 282 | local.HaloEnd2()[i] = 0;
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| 283 | }
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| 284 |
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| 285 | if (grid.Local().BoundarySize2()[i] > 0) {
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| 286 | local.Size()[i] -= grid.Local().BoundarySize2()[i];
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| 287 | local.End()[i] -= grid.Local().BoundarySize2()[i];
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| 288 | local.BoundaryBegin2()[i] = local.End()[i];
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| 289 | local.BoundaryEnd2()[i] = local.End()[i] + grid.Local().BoundarySize2()[i];
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| 290 | }else {
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| 291 | local.BoundaryBegin2()[i] = 0;
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| 292 | local.BoundaryEnd2()[i] = 0;
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| 293 | }
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| 294 |
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| 295 | }
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| 296 |
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| 297 | local.HaloSize1() = local.HaloEnd1() - local.HaloBegin1();
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| 298 | local.HaloSize2() = local.HaloEnd2() - local.HaloBegin2();
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| 299 | local.BoundarySize1() = local.BoundaryEnd1() - local.BoundaryBegin1();
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| 300 | local.BoundarySize2() = local.BoundaryEnd2() - local.BoundaryBegin2();
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| 301 |
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| 302 | local.FinerBegin() = local.Begin();
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| 303 | local.FinerEnd() = local.End();
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| 304 | local.FinerSize() = local.Size();
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| 305 |
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| 306 | Extent().Size() = grid.Extent().Size();
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| 307 | Extent().Begin() = grid.Extent().Begin();
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| 308 | Extent().End() = grid.Extent().End();
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| 309 | Extent().MeshWidth() = 2.0 * grid.Extent().MeshWidth();
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| 310 |
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| 311 | iterators.SetSubgrids(local);
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| 312 | Allocate();
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| 313 | }
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| 314 |
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| 315 | void TempGrid::ImportFromResidual(Grid& sol, Grid& rhs)
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| 316 | {
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| 317 | Grid::iterator iter;
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| 318 |
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| 319 | const vmg_float prefactor = MG::GetDiscretization()->OperatorPrefactor(sol);
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| 320 | const Stencil& A = MG::GetDiscretization()->GetStencil();
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| 321 |
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| 322 | this->Clear();
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| 323 |
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| 324 | MG::GetComm()->CommToGhosts(sol);
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| 325 |
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| 326 | for (iter=Iterators().Local().Begin(); iter!=Iterators().Local().End(); ++iter)
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| 327 | (*this)(*iter) = rhs.GetVal(*iter) - prefactor * A.Apply(sol, *iter);
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| 328 | }
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| 329 |
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| 330 | void TempGrid::Allocate()
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| 331 | {
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| 332 | const int size = local.SizeTotal().Product();
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| 333 |
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| 334 | if (size > size_max) {
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| 335 | size_max = size;
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| 336 | delete [] grid;
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| 337 | grid = new vmg_float[size];
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| 338 | }
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| 339 | }
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| 340 |
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| 341 | TempGrid::TempGrid() :
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| 342 | size_max(0)
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| 343 | {
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| 344 | }
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| 345 |
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| 346 | TempGrid::TempGrid(const Grid& rhs) :
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| 347 | size_max(0)
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| 348 | {
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| 349 | SetProperties(rhs);
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| 350 | }
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| 351 |
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| 352 | TempGrid::TempGrid(const GlobalIndices& global, const LocalIndices& local, const SpatialExtent& extent) :
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| 353 | size_max(0)
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| 354 | {
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| 355 | SetProperties(global, local, extent);
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| 356 | }
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| 357 |
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| 358 | TempGrid::TempGrid(const Index& size, const Index& halo_size,
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| 359 | const Vector& spatial_begin, const Vector& spatial_end) :
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| 360 | size_max(0)
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| 361 | {
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| 362 | SetProperties(size, halo_size, spatial_begin, spatial_end);
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| 363 | }
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| 364 |
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| 365 | TempGrid::~TempGrid()
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| 366 | {
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| 367 | }
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