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1 | // -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- | ||
2 | // vi: set et ts=4 sw=4 sts=4: | ||
3 | // | ||
4 | // SPDX-FileCopyrightInfo: Copyright © DuMux Project contributors, see AUTHORS.md in root folder | ||
5 | // SPDX-License-Identifier: GPL-3.0-or-later | ||
6 | // | ||
7 | /*! | ||
8 | * \file | ||
9 | * \ingroup Experimental | ||
10 | * \ingroup MultiDomain | ||
11 | * \ingroup Assembly | ||
12 | * \brief A linear system assembler (residual and Jacobian) for finite volume schemes | ||
13 | * with multiple domains | ||
14 | */ | ||
15 | #ifndef DUMUX_EXPERIMENTAL_MULTISTAGE_MULTIDOMAIN_FV_ASSEMBLER_HH | ||
16 | #define DUMUX_EXPERIMENTAL_MULTISTAGE_MULTIDOMAIN_FV_ASSEMBLER_HH | ||
17 | |||
18 | #include <vector> | ||
19 | #include <type_traits> | ||
20 | #include <tuple> | ||
21 | #include <memory> | ||
22 | |||
23 | #include <dune/common/hybridutilities.hh> | ||
24 | #include <dune/istl/matrixindexset.hh> | ||
25 | |||
26 | #include <dumux/common/exceptions.hh> | ||
27 | #include <dumux/common/properties.hh> | ||
28 | #include <dumux/common/typetraits/utility.hh> | ||
29 | #include <dumux/common/gridcapabilities.hh> | ||
30 | |||
31 | #include <dumux/discretization/method.hh> | ||
32 | #include <dumux/assembly/diffmethod.hh> | ||
33 | #include <dumux/assembly/jacobianpattern.hh> | ||
34 | #include <dumux/linear/parallelhelpers.hh> | ||
35 | #include <dumux/parallel/multithreading.hh> | ||
36 | |||
37 | #include <dumux/multidomain/couplingjacobianpattern.hh> | ||
38 | #include <dumux/multidomain/assemblerview.hh> | ||
39 | |||
40 | #include <dumux/experimental/assembly/subdomaincclocalassembler.hh> | ||
41 | #include <dumux/experimental/assembly/subdomaincvfelocalassembler.hh> | ||
42 | #include <dumux/experimental/assembly/multistagefvlocaloperator.hh> | ||
43 | |||
44 | #include <dumux/experimental/timestepping/multistagemethods.hh> | ||
45 | #include <dumux/experimental/timestepping/multistagetimestepper.hh> | ||
46 | |||
47 | namespace Dumux::Grid::Capabilities { | ||
48 | |||
49 | namespace Detail { | ||
50 | // helper for multi-domain models | ||
51 | template<class T, std::size_t... I> | ||
52 | bool allGridsSupportsMultithreadingImpl(const T& gridGeometries, std::index_sequence<I...>) | ||
53 | { | ||
54 | return (... && supportsMultithreading(std::get<I>(gridGeometries)->gridView())); | ||
55 | } | ||
56 | } // end namespace Detail | ||
57 | |||
58 | // helper for multi-domain models (all grids have to support multithreading) | ||
59 | template<class... GG> | ||
60 | bool allGridsSupportsMultithreading(const std::tuple<GG...>& gridGeometries) | ||
61 | { | ||
62 | return Detail::allGridsSupportsMultithreadingImpl<std::tuple<GG...>>(gridGeometries, std::make_index_sequence<sizeof...(GG)>()); | ||
63 | } | ||
64 | |||
65 | } // end namespace Dumux::Grid::Capabilities | ||
66 | |||
67 | namespace Dumux { | ||
68 | |||
69 | /*! | ||
70 | * \ingroup Experimental | ||
71 | * \ingroup MultiDomain | ||
72 | * \ingroup Assembly | ||
73 | * \brief Type trait that is specialized for coupling manager supporting multithreaded assembly | ||
74 | * \note A coupling manager implementation that wants to enable multithreaded assembly has to specialize this trait | ||
75 | */ | ||
76 | template<class CM> | ||
77 | struct CouplingManagerSupportsMultithreadedAssembly : public std::false_type | ||
78 | {}; | ||
79 | |||
80 | } // end namespace Dumux | ||
81 | |||
82 | namespace Dumux::Experimental { | ||
83 | |||
84 | /*! | ||
85 | * \ingroup Experimental | ||
86 | * \ingroup MultiDomain | ||
87 | * \ingroup Assembly | ||
88 | * \brief A linear system assembler (residual and Jacobian) for finite volume schemes (box, tpfa, mpfa, ...) | ||
89 | * with multiple domains | ||
90 | * \tparam MDTraits the multidimensional traits | ||
91 | * \tparam diffMethod the differentiation method to residual compute derivatives | ||
92 | */ | ||
93 | template<class MDTraits, class CMType, DiffMethod diffMethod> | ||
94 | class MultiStageMultiDomainFVAssembler | ||
95 | { | ||
96 | template<std::size_t id> | ||
97 | using SubDomainTypeTag = typename MDTraits::template SubDomain<id>::TypeTag; | ||
98 | |||
99 | public: | ||
100 | using Traits = MDTraits; | ||
101 | |||
102 | using Scalar = typename MDTraits::Scalar; | ||
103 | using StageParams = Experimental::MultiStageParams<Scalar>; | ||
104 | |||
105 | //! TODO get rid of this GetPropType | ||
106 | template<std::size_t id> | ||
107 | using LocalResidual = GetPropType<SubDomainTypeTag<id>, Properties::LocalResidual>; | ||
108 | |||
109 | template<std::size_t id> | ||
110 | using GridVariables = typename MDTraits::template SubDomain<id>::GridVariables; | ||
111 | |||
112 | template<std::size_t id> | ||
113 | using GridGeometry = typename MDTraits::template SubDomain<id>::GridGeometry; | ||
114 | |||
115 | template<std::size_t id> | ||
116 | using Problem = typename MDTraits::template SubDomain<id>::Problem; | ||
117 | |||
118 | using JacobianMatrix = typename MDTraits::JacobianMatrix; | ||
119 | using SolutionVector = typename MDTraits::SolutionVector; | ||
120 | using ResidualType = typename MDTraits::ResidualVector; | ||
121 | |||
122 | using CouplingManager = CMType; | ||
123 | |||
124 | private: | ||
125 | |||
126 | using ProblemTuple = typename MDTraits::template TupleOfSharedPtrConst<Problem>; | ||
127 | using GridGeometryTuple = typename MDTraits::template TupleOfSharedPtrConst<GridGeometry>; | ||
128 | using GridVariablesTuple = typename MDTraits::template TupleOfSharedPtr<GridVariables>; | ||
129 | |||
130 | using ThisType = MultiStageMultiDomainFVAssembler<MDTraits, CouplingManager, diffMethod>; | ||
131 | |||
132 | template<std::size_t id> | ||
133 | using SubDomainAssemblerView = MultiDomainAssemblerSubDomainView<ThisType, id>; | ||
134 | |||
135 | template<class DiscretizationMethod, std::size_t id> | ||
136 | struct SubDomainAssemblerType; | ||
137 | |||
138 | template<std::size_t id> | ||
139 | struct SubDomainAssemblerType<DiscretizationMethods::CCTpfa, id> | ||
140 | { | ||
141 | using type = Experimental::SubDomainCCLocalAssembler<id, SubDomainTypeTag<id>, SubDomainAssemblerView<id>, diffMethod>; | ||
142 | }; | ||
143 | |||
144 | template<std::size_t id> | ||
145 | struct SubDomainAssemblerType<DiscretizationMethods::CCMpfa, id> | ||
146 | { | ||
147 | using type = Experimental::SubDomainCCLocalAssembler<id, SubDomainTypeTag<id>, SubDomainAssemblerView<id>, diffMethod>; | ||
148 | }; | ||
149 | |||
150 | template<std::size_t id, class DM> | ||
151 | struct SubDomainAssemblerType<DiscretizationMethods::CVFE<DM>, id> | ||
152 | { | ||
153 | using type = Experimental::SubDomainCVFELocalAssembler<id, SubDomainTypeTag<id>, SubDomainAssemblerView<id>, diffMethod>; | ||
154 | }; | ||
155 | |||
156 | template<std::size_t id> | ||
157 | using SubDomainAssembler = typename SubDomainAssemblerType<typename GridGeometry<id>::DiscretizationMethod, id>::type; | ||
158 | |||
159 | public: | ||
160 | /*! | ||
161 | * \brief The constructor for instationary problems | ||
162 | * \note the grid variables might be temporarily changed during assembly (if caching is enabled) | ||
163 | * it is however guaranteed that the state after assembly will be the same as before | ||
164 | */ | ||
165 | 2 | MultiStageMultiDomainFVAssembler(ProblemTuple problem, | |
166 | GridGeometryTuple gridGeometry, | ||
167 | GridVariablesTuple gridVariables, | ||
168 | std::shared_ptr<CouplingManager> couplingManager, | ||
169 | std::shared_ptr<const Experimental::MultiStageMethod<Scalar>> msMethod, | ||
170 | const SolutionVector& prevSol) | ||
171 | : couplingManager_(couplingManager) | ||
172 | , timeSteppingMethod_(msMethod) | ||
173 | 2 | , problemTuple_(std::move(problem)) | |
174 | 2 | , gridGeometryTuple_(std::move(gridGeometry)) | |
175 | 2 | , gridVariablesTuple_(std::move(gridVariables)) | |
176 |
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2 | , prevSol_(&prevSol) |
177 | { | ||
178 |
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4 | std::cout << "Instantiated assembler for an instationary problem." << std::endl; |
179 | |||
180 | 2 | enableMultithreading_ = CouplingManagerSupportsMultithreadedAssembly<CouplingManager>::value | |
181 | && Grid::Capabilities::allGridsSupportsMultithreading(gridGeometryTuple_) | ||
182 | && !Multithreading::isSerial() | ||
183 | && getParam<bool>("Assembly.Multithreading", true); | ||
184 | |||
185 | 2 | maybeComputeColors_(); | |
186 | 2 | } | |
187 | |||
188 | /*! | ||
189 | * \brief Assembles the global Jacobian of the residual | ||
190 | * and the residual for the current solution. | ||
191 | */ | ||
192 | 54 | void assembleJacobianAndResidual(const SolutionVector& curSol) | |
193 | { | ||
194 | 54 | resetJacobian_(); | |
195 | |||
196 | 54 | resetResidual_(); | |
197 | 108 | spatialOperatorEvaluations_.back() = 0.0; | |
198 | 108 | temporalOperatorEvaluations_.back() = 0.0; | |
199 | |||
200 |
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162 | if (stageParams_->size() != spatialOperatorEvaluations_.size()) |
201 | ✗ | DUNE_THROW(Dune::InvalidStateException, "Wrong number of residuals"); | |
202 | |||
203 | using namespace Dune::Hybrid; | ||
204 |
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1134 | forEach(std::make_index_sequence<JacobianMatrix::N()>(), [&](const auto domainId) |
205 | { | ||
206 | // assemble the spatial and temporal residual of the current time step and the Jacobian | ||
207 | // w.r.t to the current solution (the current solution on the current stage) | ||
208 | 216 | auto& jacRow = (*jacobian_)[domainId]; | |
209 | 216 | auto& spatial = spatialOperatorEvaluations_.back()[domainId]; | |
210 | 216 | auto& temporal = temporalOperatorEvaluations_.back()[domainId]; | |
211 | |||
212 | 55620 | assemble_(domainId, [&](const auto& element) | |
213 | { | ||
214 | 6912 | MultiDomainAssemblerSubDomainView view{*this, domainId}; | |
215 | 20844 | SubDomainAssembler<domainId()> subDomainAssembler(view, element, curSol, *couplingManager_); | |
216 |
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20736 | subDomainAssembler.assembleJacobianAndResidual( |
217 |
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13824 | jacRow, (*residual_)[domainId], |
218 | gridVariablesTuple_, | ||
219 | *stageParams_, temporal, spatial, | ||
220 | constrainedDofs_[domainId] | ||
221 | ); | ||
222 | }); | ||
223 | |||
224 | // assemble the full residual for the time integration stage | ||
225 |
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432 | auto constantResidualComponent = (*residual_)[domainId]; |
226 | constantResidualComponent = 0.0; | ||
227 |
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324 | for (std::size_t k = 0; k < stageParams_->size()-1; ++k) |
228 | { | ||
229 |
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324 | if (!stageParams_->skipTemporal(k)) |
230 | 540 | constantResidualComponent.axpy(stageParams_->temporalWeight(k), temporalOperatorEvaluations_[k][domainId]); | |
231 |
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324 | if (!stageParams_->skipSpatial(k)) |
232 | ✗ | constantResidualComponent.axpy(stageParams_->spatialWeight(k), spatialOperatorEvaluations_[k][domainId]); | |
233 | } | ||
234 | |||
235 | // masked summation of constant residual component onto this stage's resiudal component | ||
236 |
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10314 | for (std::size_t i = 0; i < constantResidualComponent.size(); ++i) |
237 |
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74736 | for (std::size_t ii = 0; ii < constantResidualComponent[i].size(); ++ii) |
238 |
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108648 | (*residual_)[domainId][i][ii] += constrainedDofs_[domainId][i][ii] > 0.5 ? 0.0 : constantResidualComponent[i][ii]; |
239 | }); | ||
240 | 54 | } | |
241 | |||
242 | //! compute the residuals using the internal residual | ||
243 | ✗ | void assembleResidual(const SolutionVector& curSol) | |
244 | ✗ | { DUNE_THROW(Dune::NotImplemented, "residual"); } | |
245 | |||
246 | /*! | ||
247 | * \brief The version without arguments uses the default constructor to create | ||
248 | * the jacobian and residual objects in this assembler if you don't need them outside this class | ||
249 | */ | ||
250 | 2 | void setLinearSystem() | |
251 | { | ||
252 |
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2 | jacobian_ = std::make_shared<JacobianMatrix>(); |
253 |
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2 | residual_ = std::make_shared<ResidualType>(); |
254 | |||
255 | 2 | setJacobianBuildMode_(*jacobian_); | |
256 | 6 | setJacobianPattern_(*jacobian_); | |
257 | 6 | setResidualSize_(*residual_); | |
258 | 2 | } | |
259 | |||
260 | /*! | ||
261 | * \brief Updates the grid variables with the given solution | ||
262 | */ | ||
263 | ✗ | void updateGridVariables(const SolutionVector& curSol) | |
264 | { | ||
265 | using namespace Dune::Hybrid; | ||
266 | 162 | forEach(integralRange(Dune::Hybrid::size(gridVariablesTuple_)), [&](const auto domainId) | |
267 | 432 | { this->gridVariables(domainId).update(curSol[domainId]); }); | |
268 | ✗ | } | |
269 | |||
270 | /*! | ||
271 | * \brief Resets the grid variables to the last time step | ||
272 | */ | ||
273 | ✗ | void resetTimeStep(const SolutionVector& curSol) | |
274 | { | ||
275 | using namespace Dune::Hybrid; | ||
276 | ✗ | forEach(integralRange(Dune::Hybrid::size(gridVariablesTuple_)), [&](const auto domainId) | |
277 | ✗ | { this->gridVariables(domainId).resetTimeStep(curSol[domainId]); }); | |
278 | ✗ | } | |
279 | |||
280 | //! the number of dof locations of domain i | ||
281 | template<std::size_t i> | ||
282 | ✗ | std::size_t numDofs(Dune::index_constant<i> domainId) const | |
283 | 192 | { return std::get<domainId>(gridGeometryTuple_)->numDofs(); } | |
284 | |||
285 | //! the problem of domain i | ||
286 | template<std::size_t i> | ||
287 | ✗ | const auto& problem(Dune::index_constant<i> domainId) const | |
288 |
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1455390 | { return *std::get<domainId>(problemTuple_); } |
289 | |||
290 | //! the finite volume grid geometry of domain i | ||
291 | template<std::size_t i> | ||
292 | ✗ | const auto& gridGeometry(Dune::index_constant<i> domainId) const | |
293 |
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28720 | { return *std::get<domainId>(gridGeometryTuple_); } |
294 | |||
295 | //! the grid view of domain i | ||
296 | template<std::size_t i> | ||
297 | ✗ | const auto& gridView(Dune::index_constant<i> domainId) const | |
298 |
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296 | { return gridGeometry(domainId).gridView(); } |
299 | |||
300 | //! the grid variables of domain i | ||
301 | template<std::size_t i> | ||
302 | ✗ | GridVariables<i>& gridVariables(Dune::index_constant<i> domainId) | |
303 |
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71364 | { return *std::get<domainId>(gridVariablesTuple_); } |
304 | |||
305 | //! the grid variables of domain i | ||
306 | template<std::size_t i> | ||
307 | const GridVariables<i>& gridVariables(Dune::index_constant<i> domainId) const | ||
308 | { return *std::get<domainId>(gridVariablesTuple_); } | ||
309 | |||
310 | //! the coupling manager | ||
311 | const CouplingManager& couplingManager() const | ||
312 | { return *couplingManager_; } | ||
313 | |||
314 | //! the full Jacobian matrix | ||
315 | JacobianMatrix& jacobian() | ||
316 |
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216 | { return *jacobian_; } |
317 | |||
318 | //! the full residual vector | ||
319 | ResidualType& residual() | ||
320 |
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148 | { return *residual_; } |
321 | |||
322 | //! the solution before time integration | ||
323 | ✗ | const SolutionVector& prevSol() const | |
324 | ✗ | { return *prevSol_; } | |
325 | |||
326 | /*! | ||
327 | * \brief Create a local residual object (used by the local assembler) | ||
328 | */ | ||
329 | template<std::size_t i> | ||
330 | ✗ | MultiStageFVLocalOperator<LocalResidual<i>> localResidual(Dune::index_constant<i> domainId) const | |
331 |
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37968 | { return { LocalResidual<i>{std::get<domainId>(problemTuple_).get(), nullptr} }; } |
332 | |||
333 | 40 | void clearStages() | |
334 | { | ||
335 |
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40 | spatialOperatorEvaluations_.clear(); |
336 |
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40 | temporalOperatorEvaluations_.clear(); |
337 |
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40 | stageParams_.reset(); |
338 | 40 | } | |
339 | |||
340 | template<class StageParams> | ||
341 | 20 | void prepareStage(SolutionVector& x, StageParams params) | |
342 | { | ||
343 |
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40 | stageParams_ = std::move(params); |
344 |
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20 | const auto curStage = stageParams_->size() - 1; |
345 | |||
346 | // in the first stage, also assemble the old residual | ||
347 |
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20 | if (curStage == 1) |
348 | { | ||
349 | // update time in variables? | ||
350 | using namespace Dune::Hybrid; | ||
351 | 20 | forEach(std::make_index_sequence<JacobianMatrix::N()>(), [&](const auto domainId) | |
352 | { | ||
353 | 160 | setProblemTime_(*std::get<domainId>(problemTuple_), stageParams_->timeAtStage(curStage)); | |
354 | }); | ||
355 | |||
356 | 20 | resetResidual_(); // residual resized and zero | |
357 | 40 | spatialOperatorEvaluations_.push_back(*residual_); | |
358 | 40 | temporalOperatorEvaluations_.push_back(*residual_); | |
359 | |||
360 | // assemble stage 0 residuals | ||
361 | using namespace Dune::Hybrid; | ||
362 | 20 | forEach(std::make_index_sequence<JacobianMatrix::N()>(), [&](const auto domainId) | |
363 | { | ||
364 |
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40 | auto& spatial = spatialOperatorEvaluations_.back()[domainId]; |
365 |
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40 | auto& temporal = temporalOperatorEvaluations_.back()[domainId]; |
366 | 15380 | assemble_(domainId, [&](const auto& element) | |
367 | { | ||
368 | 2560 | MultiDomainAssemblerSubDomainView view{*this, domainId}; | |
369 |
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7680 | SubDomainAssembler<domainId()> subDomainAssembler(view, element, x, *couplingManager_); |
370 |
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2560 | subDomainAssembler.localResidual().spatialWeight(1.0); |
371 |
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2560 | subDomainAssembler.localResidual().temporalWeight(1.0); |
372 |
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2560 | subDomainAssembler.assembleCurrentResidual(spatial, temporal); |
373 | }); | ||
374 | }); | ||
375 | } | ||
376 | |||
377 | // update time in variables? | ||
378 | using namespace Dune::Hybrid; | ||
379 | 20 | forEach(std::make_index_sequence<JacobianMatrix::N()>(), [&](const auto domainId) | |
380 | { | ||
381 | 160 | setProblemTime_(*std::get<domainId>(problemTuple_), stageParams_->timeAtStage(curStage)); | |
382 | }); | ||
383 | |||
384 | 20 | resetResidual_(); // residual resized and zero | |
385 | 40 | spatialOperatorEvaluations_.push_back(*residual_); | |
386 | 40 | temporalOperatorEvaluations_.push_back(*residual_); | |
387 | 20 | } | |
388 | |||
389 | //! TODO get rid of this (called by Newton but shouldn't be necessary) | ||
390 | ✗ | bool isStationaryProblem() const | |
391 | ✗ | { return false; } | |
392 | |||
393 | bool isImplicit() const | ||
394 | 406016 | { return timeSteppingMethod_->implicit(); } | |
395 | |||
396 | protected: | ||
397 | //! the coupling manager coupling the sub domains | ||
398 | std::shared_ptr<CouplingManager> couplingManager_; | ||
399 | |||
400 | private: | ||
401 | /*! | ||
402 | * \brief Sets the jacobian build mode | ||
403 | */ | ||
404 | ✗ | void setJacobianBuildMode_(JacobianMatrix& jac) const | |
405 | { | ||
406 | using namespace Dune::Hybrid; | ||
407 |
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2 | forEach(std::make_index_sequence<JacobianMatrix::N()>(), [&](const auto i) |
408 | { | ||
409 |
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16 | forEach(jac[i], [&](auto& jacBlock) |
410 | { | ||
411 | using BlockType = std::decay_t<decltype(jacBlock)>; | ||
412 |
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8 | if (jacBlock.buildMode() == BlockType::BuildMode::unknown) |
413 | 8 | jacBlock.setBuildMode(BlockType::BuildMode::random); | |
414 | ✗ | else if (jacBlock.buildMode() != BlockType::BuildMode::random) | |
415 | ✗ | DUNE_THROW(Dune::NotImplemented, "Only BCRS matrices with random build mode are supported at the moment"); | |
416 | }); | ||
417 | }); | ||
418 | ✗ | } | |
419 | |||
420 | /*! | ||
421 | * \brief Sets the jacobian sparsity pattern. | ||
422 | */ | ||
423 | void setJacobianPattern_(JacobianMatrix& jac) const | ||
424 | { | ||
425 | using namespace Dune::Hybrid; | ||
426 | 2 | forEach(std::make_index_sequence<JacobianMatrix::N()>(), [&](const auto domainI) | |
427 | { | ||
428 |
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48 | forEach(integralRange(Dune::Hybrid::size(jac[domainI])), [&](const auto domainJ) |
429 | { | ||
430 |
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16 | const auto pattern = this->getJacobianPattern_(domainI, domainJ); |
431 |
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24 | pattern.exportIdx(jac[domainI][domainJ]); |
432 | }); | ||
433 | }); | ||
434 | } | ||
435 | |||
436 | /*! | ||
437 | * \brief Resizes the residual | ||
438 | */ | ||
439 | void setResidualSize_(ResidualType& res) const | ||
440 | { | ||
441 | using namespace Dune::Hybrid; | ||
442 | 194 | forEach(integralRange(Dune::Hybrid::size(res)), [&](const auto domainId) | |
443 | 192 | { res[domainId].resize(this->numDofs(domainId)); }); | |
444 | } | ||
445 | |||
446 | // reset the residual vector to 0.0 | ||
447 | 94 | void resetResidual_() | |
448 | { | ||
449 |
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94 | if(!residual_) |
450 | { | ||
451 | ✗ | residual_ = std::make_shared<ResidualType>(); | |
452 | ✗ | setResidualSize_(*residual_); | |
453 | } | ||
454 | |||
455 | 94 | setResidualSize_(constrainedDofs_); | |
456 | |||
457 | 188 | (*residual_) = 0.0; | |
458 | 94 | constrainedDofs_ = 0.0; | |
459 | 94 | } | |
460 | |||
461 | // reset the jacobian vector to 0.0 | ||
462 | 54 | void resetJacobian_() | |
463 | { | ||
464 |
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54 | if(!jacobian_) |
465 | { | ||
466 | ✗ | jacobian_ = std::make_shared<JacobianMatrix>(); | |
467 | ✗ | setJacobianBuildMode_(*jacobian_); | |
468 | ✗ | setJacobianPattern_(*jacobian_); | |
469 | } | ||
470 | |||
471 | 108 | (*jacobian_) = 0.0; | |
472 | 54 | } | |
473 | |||
474 | //! Computes the colors | ||
475 | ✗ | void maybeComputeColors_() | |
476 | { | ||
477 | if constexpr (CouplingManagerSupportsMultithreadedAssembly<CouplingManager>::value) | ||
478 | if (enableMultithreading_) | ||
479 | couplingManager_->computeColorsForAssembly(); | ||
480 | ✗ | } | |
481 | |||
482 | template<std::size_t i, class SubRes> | ||
483 | void assembleResidual_(Dune::index_constant<i> domainId, SubRes& subRes, | ||
484 | const SolutionVector& curSol) | ||
485 | { | ||
486 | DUNE_THROW(Dune::NotImplemented, "assembleResidual_"); | ||
487 | } | ||
488 | |||
489 | /*! | ||
490 | * \brief A method assembling something per element | ||
491 | * \note Handles exceptions for parallel runs | ||
492 | * \throws NumericalProblem on all processes if an exception is thrown during assembly | ||
493 | */ | ||
494 | template<std::size_t i, class AssembleElementFunc> | ||
495 | 296 | void assemble_(Dune::index_constant<i> domainId, AssembleElementFunc&& assembleElement) const | |
496 | { | ||
497 | // a state that will be checked on all processes | ||
498 | 296 | bool succeeded = false; | |
499 | |||
500 | // try assembling using the local assembly function | ||
501 | try | ||
502 | { | ||
503 | if constexpr (CouplingManagerSupportsMultithreadedAssembly<CouplingManager>::value) | ||
504 | { | ||
505 | if (enableMultithreading_) | ||
506 | { | ||
507 | couplingManager_->assembleMultithreaded( | ||
508 | domainId, std::forward<AssembleElementFunc>(assembleElement) | ||
509 | ); | ||
510 | return; | ||
511 | } | ||
512 | } | ||
513 | |||
514 | // fallback for coupling managers that don't support multithreaded assembly (yet) | ||
515 | // or if multithreaded assembly is disabled | ||
516 | // let the local assembler add the element contributions | ||
517 |
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19536 | for (const auto& element : elements(gridView(domainId))) |
518 |
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18944 | assembleElement(element); |
519 | |||
520 | // if we get here, everything worked well on this process | ||
521 | 296 | succeeded = true; | |
522 | } | ||
523 | // throw exception if a problem occurred | ||
524 | ✗ | catch (NumericalProblem &e) | |
525 | { | ||
526 | ✗ | std::cout << "rank " << gridView(domainId).comm().rank() | |
527 | ✗ | << " caught an exception while assembling:" << e.what() | |
528 | ✗ | << "\n"; | |
529 | ✗ | succeeded = false; | |
530 | } | ||
531 | |||
532 | // make sure everything worked well on all processes | ||
533 |
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592 | if (gridView(domainId).comm().size() > 1) |
534 | ✗ | succeeded = gridView(domainId).comm().min(succeeded); | |
535 | |||
536 | // if not succeeded rethrow the error on all processes | ||
537 |
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296 | if (!succeeded) |
538 | ✗ | DUNE_THROW(NumericalProblem, "A process did not succeed in linearizing the system"); | |
539 | 296 | } | |
540 | |||
541 | // get diagonal block pattern | ||
542 | template<std::size_t i, std::size_t j, typename std::enable_if_t<(i==j), int> = 0> | ||
543 | 8 | Dune::MatrixIndexSet getJacobianPattern_(Dune::index_constant<i> domainI, | |
544 | Dune::index_constant<j> domainJ) const | ||
545 | { | ||
546 | 8 | const auto& gg = gridGeometry(domainI); | |
547 |
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16 | if (timeSteppingMethod_->implicit()) |
548 | { | ||
549 | 16 | auto pattern = getJacobianPattern<true>(gg); | |
550 | 8 | couplingManager_->extendJacobianPattern(domainI, pattern); | |
551 | 16 | return pattern; | |
552 | } | ||
553 | else | ||
554 | { | ||
555 | ✗ | auto pattern = getJacobianPattern<false>(gg); | |
556 | ✗ | couplingManager_->extendJacobianPattern(domainI, pattern); | |
557 | ✗ | return pattern; | |
558 | } | ||
559 | } | ||
560 | |||
561 | // get coupling block pattern | ||
562 | template<std::size_t i, std::size_t j, typename std::enable_if_t<(i!=j), int> = 0> | ||
563 | 4 | Dune::MatrixIndexSet getJacobianPattern_(Dune::index_constant<i> domainI, | |
564 | Dune::index_constant<j> domainJ) const | ||
565 | { | ||
566 |
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8 | if (timeSteppingMethod_->implicit()) |
567 | 8 | return getCouplingJacobianPattern<true>(*couplingManager_, | |
568 | domainI, gridGeometry(domainI), | ||
569 | domainJ, gridGeometry(domainJ) | ||
570 | 16 | ); | |
571 | else | ||
572 | ✗ | return getCouplingJacobianPattern<false>(*couplingManager_, | |
573 | domainI, gridGeometry(domainI), | ||
574 | domainJ, gridGeometry(domainJ) | ||
575 | ✗ | ); | |
576 | } | ||
577 | |||
578 | // TODO make this nicer with a is_detected trait in a common location | ||
579 | template<class P> | ||
580 | ✗ | void setProblemTime_(const P& p, const Scalar t) | |
581 | 160 | { setProblemTimeImpl_(p, t, 0); } | |
582 | |||
583 | template<class P> | ||
584 | ✗ | auto setProblemTimeImpl_(const P& p, const Scalar t, int) -> decltype(p.setTime(0)) | |
585 | 160 | { p.setTime(t); } | |
586 | |||
587 | template<class P> | ||
588 | void setProblemTimeImpl_(const P& p, const Scalar t, long) | ||
589 | {} | ||
590 | |||
591 | std::shared_ptr<const Experimental::MultiStageMethod<Scalar>> timeSteppingMethod_; | ||
592 | std::vector<ResidualType> spatialOperatorEvaluations_; | ||
593 | std::vector<ResidualType> temporalOperatorEvaluations_; | ||
594 | ResidualType constrainedDofs_; | ||
595 | std::shared_ptr<const StageParams> stageParams_; | ||
596 | |||
597 | //! pointer to the problem to be solved | ||
598 | ProblemTuple problemTuple_; | ||
599 | |||
600 | //! the finite volume geometry of the grid | ||
601 | GridGeometryTuple gridGeometryTuple_; | ||
602 | |||
603 | //! the variables container for the grid | ||
604 | GridVariablesTuple gridVariablesTuple_; | ||
605 | |||
606 | //! Pointer to the previous solution | ||
607 | const SolutionVector* prevSol_; | ||
608 | |||
609 | //! shared pointers to the jacobian matrix and residual | ||
610 | std::shared_ptr<JacobianMatrix> jacobian_; | ||
611 | std::shared_ptr<ResidualType> residual_; | ||
612 | |||
613 | //! if multithreaded assembly is enabled | ||
614 | bool enableMultithreading_ = false; | ||
615 | }; | ||
616 | |||
617 | } // end namespace Dumux | ||
618 | |||
619 | #endif | ||
620 |