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Tempus_UnitTest_Subcycling.cpp
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1//@HEADER
2// *****************************************************************************
3// Tempus: Time Integration and Sensitivity Analysis Package
4//
5// Copyright 2017 NTESS and the Tempus contributors.
6// SPDX-License-Identifier: BSD-3-Clause
7// *****************************************************************************
8//@HEADER
9
10#include "Tempus_UnitTest_Utils.hpp"
11
12#include "Tempus_StepperForwardEuler.hpp"
13#include "Tempus_StepperBackwardEuler.hpp"
14
15#include "Tempus_StepperSubcycling.hpp"
16#include "Tempus_StepperSubcyclingModifierBase.hpp"
17#include "Tempus_StepperSubcyclingModifierXBase.hpp"
18#include "Tempus_StepperSubcyclingObserverBase.hpp"
19#include "Tempus_StepperSubcyclingModifierDefault.hpp"
20#include "Tempus_StepperSubcyclingModifierXDefault.hpp"
21#include "Tempus_StepperSubcyclingObserverDefault.hpp"
22
23namespace Tempus_Unit_Test {
24
25using Teuchos::ParameterList;
26using Teuchos::RCP;
27using Teuchos::rcp;
28using Teuchos::rcp_const_cast;
29using Teuchos::rcp_dynamic_cast;
30using Teuchos::sublist;
31
32using Tempus::StepperFactory;
33
34// ************************************************************
35// ************************************************************
36TEUCHOS_UNIT_TEST(Subcycling, Default_Construction)
37{
38 auto model = rcp(new Tempus_Test::SinCosModel<double>());
39 auto modelME = rcp_dynamic_cast<const Thyra::ModelEvaluator<double> >(model);
40
41 // Setup SolutionHistory ------------------------------------
42 auto inArgsIC = model->getNominalValues();
43 auto icSolution =
44 rcp_const_cast<Thyra::VectorBase<double> >(inArgsIC.get_x());
45 auto icState = Tempus::createSolutionStateX(icSolution);
46 auto solutionHistory = rcp(new Tempus::SolutionHistory<double>());
47 solutionHistory->addState(icState);
48 solutionHistory->initWorkingState();
49
50 // Default construction.
51 auto stepper = rcp(new Tempus::StepperSubcycling<double>());
52 auto stepperBE = Tempus::createStepperBackwardEuler(modelME, Teuchos::null);
53 stepper->setSubcyclingStepper(stepperBE);
54 stepper->setInitialConditions(solutionHistory);
55 stepper->initialize();
56 TEUCHOS_TEST_FOR_EXCEPT(!stepper->isInitialized());
57
58 // Default values for construction.
59 auto modifier = rcp(new Tempus::StepperSubcyclingModifierDefault<double>());
60 auto modifierX = rcp(new Tempus::StepperSubcyclingModifierXDefault<double>());
61 auto observer = rcp(new Tempus::StepperSubcyclingObserverDefault<double>());
62 auto solver = rcp(new Thyra::NOXNonlinearSolver());
63 solver->setParameterList(Tempus::defaultSolverParameters());
64
65 bool useFSAL = stepper->getUseFSAL();
66 std::string ICConsistency = stepper->getICConsistency();
67 bool ICConsistencyCheck = stepper->getICConsistencyCheck();
68
69 // Test the set functions
70 stepper->setSolver(solver);
71 stepper->initialize();
72 TEUCHOS_TEST_FOR_EXCEPT(!stepper->isInitialized());
73 stepper->setAppAction(modifier);
74 stepper->initialize();
75 TEUCHOS_TEST_FOR_EXCEPT(!stepper->isInitialized());
76 stepper->setAppAction(modifierX);
77 stepper->initialize();
78 TEUCHOS_TEST_FOR_EXCEPT(!stepper->isInitialized());
79 stepper->setAppAction(observer);
80 stepper->initialize();
81 TEUCHOS_TEST_FOR_EXCEPT(!stepper->isInitialized());
82 stepper->setUseFSAL(useFSAL);
83 stepper->initialize();
84 TEUCHOS_TEST_FOR_EXCEPT(!stepper->isInitialized());
85 stepper->setICConsistency(ICConsistency);
86 stepper->initialize();
87 TEUCHOS_TEST_FOR_EXCEPT(!stepper->isInitialized());
88 stepper->setICConsistencyCheck(ICConsistencyCheck);
89 stepper->initialize();
90 TEUCHOS_TEST_FOR_EXCEPT(!stepper->isInitialized());
91
92 // Full argument list construction.
93 auto scIntegrator = Teuchos::rcp(new Tempus::IntegratorBasic<double>());
94 auto stepperFE = Tempus::createStepperForwardEuler(modelME, Teuchos::null);
95 scIntegrator->setStepper(stepperFE);
96 scIntegrator->setSolutionHistory(solutionHistory);
97 scIntegrator->initialize();
98
99 stepper = rcp(new Tempus::StepperSubcycling<double>(
100 model, scIntegrator, useFSAL, ICConsistency, ICConsistencyCheck,
101 modifier));
102 TEUCHOS_TEST_FOR_EXCEPT(!stepper->isInitialized());
103
104 // Test stepper properties.
105 TEUCHOS_ASSERT(stepper->getOrder() == 1);
106}
107
108// ************************************************************
109// ************************************************************
110TEUCHOS_UNIT_TEST(Subcycling, MaxTimeStepDoesNotChangeDuring_takeStep)
111{
112 // Setup the stepper ----------------------------------------
113 auto model = rcp(new Tempus_Test::SinCosModel<double>());
114 auto modelME = rcp_dynamic_cast<const Thyra::ModelEvaluator<double> >(model);
115 auto stepper = rcp(new Tempus::StepperSubcycling<double>());
116 auto stepperBE = Tempus::createStepperBackwardEuler(modelME, Teuchos::null);
117 stepper->setSubcyclingStepper(stepperBE);
118
119 // Setup SolutionHistory ------------------------------------
120 auto inArgsIC = model->getNominalValues();
121 auto icSolution =
122 rcp_const_cast<Thyra::VectorBase<double> >(inArgsIC.get_x());
123 auto icState = Tempus::createSolutionStateX(icSolution);
124 auto solutionHistory = rcp(new Tempus::SolutionHistory<double>());
125 solutionHistory->addState(icState);
126 solutionHistory->initWorkingState();
127
128 // Ensure ICs are consistent and stepper memory is set (e.g., xDot is set).
129 stepper->setInitialConditions(solutionHistory);
130 stepper->initialize();
131
132 // Test
133 stepper->setSubcyclingInitTimeStep(0.25);
134 stepper->setSubcyclingMaxTimeStep(0.5);
135 double maxTimeStep_Set = stepper->getSubcyclingMaxTimeStep();
136 stepper->takeStep(solutionHistory);
137 double maxTimeStep_After = stepper->getSubcyclingMaxTimeStep();
138
139 TEST_FLOATING_EQUALITY(maxTimeStep_Set, maxTimeStep_After, 1.0e-14);
140}
141
142// ************************************************************
143// ************************************************************
144class StepperSubcyclingModifierTest
145 : virtual public Tempus::StepperSubcyclingModifierBase<double> {
146 public:
148 StepperSubcyclingModifierTest()
149 : testBEGIN_STEP(false),
150 testEND_STEP(false),
151 testCurrentValue(-0.99),
152 testWorkingValue(-0.99),
153 testDt(1.5),
154 testName("")
155 {
156 }
158 virtual ~StepperSubcyclingModifierTest() {}
159
161 virtual void modify(
162 Teuchos::RCP<Tempus::SolutionHistory<double> > sh,
163 Teuchos::RCP<Tempus::StepperSubcycling<double> > stepper,
164 const typename Tempus::StepperSubcyclingAppAction<double>::ACTION_LOCATION
165 actLoc)
166 {
167 switch (actLoc) {
168 case StepperSubcyclingAppAction<double>::BEGIN_STEP: {
169 testBEGIN_STEP = true;
170 auto x = sh->getCurrentState()->getX();
171 testCurrentValue = get_ele(*(x), 0);
172 testName = "Subcycling - Modifier";
173 stepper->setStepperName(testName);
174 break;
175 }
176 case StepperSubcyclingAppAction<double>::END_STEP: {
177 testEND_STEP = true;
178 auto x = sh->getWorkingState()->getX();
179 testWorkingValue = get_ele(*(x), 0);
180 testDt = sh->getWorkingState()->getTimeStep() / 10.0;
181 sh->getWorkingState()->setTimeStep(testDt);
182 break;
183 }
184 default:
185 TEUCHOS_TEST_FOR_EXCEPTION(true, std::logic_error,
186 "Error - unknown action location.\n");
187 }
188 }
189
190 bool testBEGIN_STEP;
191 bool testEND_STEP;
192 double testCurrentValue;
193 double testWorkingValue;
194 double testDt;
195 std::string testName;
196};
197
198TEUCHOS_UNIT_TEST(Subcycling, AppAction_Modifier)
199{
200 // Setup the SinCosModel ------------------------------------
201 auto model = rcp(new Tempus_Test::SinCosModel<double>());
202 auto modelME = rcp_dynamic_cast<const Thyra::ModelEvaluator<double> >(model);
203
204 // Setup Stepper for field solve ----------------------------
205 auto stepper = rcp(new Tempus::StepperSubcycling<double>());
206 auto stepperFE = Tempus::createStepperForwardEuler(modelME, Teuchos::null);
207 auto modifier = rcp(new StepperSubcyclingModifierTest());
208 stepper->setAppAction(modifier);
209 stepper->setSubcyclingStepper(stepperFE);
210
211 stepper->setSubcyclingMinTimeStep(15);
212 stepper->setSubcyclingInitTimeStep(15.0);
213 stepper->setSubcyclingMaxTimeStep(15.0);
214 stepper->setSubcyclingMaxFailures(10);
215 stepper->setSubcyclingMaxConsecFailures(5);
216 stepper->setSubcyclingScreenOutputIndexInterval(1);
217 stepper->setSubcyclingPrintDtChanges(true);
218
219 // Setup TimeStepControl ------------------------------------
220 auto timeStepControl = rcp(new Tempus::TimeStepControl<double>());
221 timeStepControl->setInitIndex(0);
222 timeStepControl->setInitTime(0.0);
223 timeStepControl->setFinalTime(1.0);
224 timeStepControl->setInitTimeStep(15.0);
225 timeStepControl->initialize();
226
227 // Setup initial condition SolutionState --------------------
228 auto inArgsIC = model->getNominalValues();
229 auto icSolution =
230 rcp_const_cast<Thyra::VectorBase<double> >(inArgsIC.get_x());
231 auto icState = Tempus::createSolutionStateX(icSolution);
232 icState->setTime(timeStepControl->getInitTime());
233 icState->setIndex(timeStepControl->getInitIndex());
234 icState->setTimeStep(0.0); // dt for ICs are indicated by zero.
235 icState->setSolutionStatus(Tempus::Status::PASSED); // ICs are passing.
236
237 // Setup SolutionHistory ------------------------------------
238 auto solutionHistory = rcp(new Tempus::SolutionHistory<double>());
239 solutionHistory->setName("Forward States");
240 solutionHistory->setStorageType(Tempus::STORAGE_TYPE_STATIC);
241 solutionHistory->setStorageLimit(2);
242 solutionHistory->addState(icState);
243
244 // Ensure ICs are consistent and stepper memory is set (e.g., xDot is set).
245 stepper->setInitialConditions(solutionHistory);
246 stepper->initialize();
247
248 // Take one time step.
249 stepper->setInitialConditions(solutionHistory);
250 solutionHistory->initWorkingState();
251 solutionHistory->getWorkingState()->setTimeStep(15.0);
252 stepper->takeStep(solutionHistory);
253
254 // Testing that each ACTION_LOCATION has been called.
255 TEST_COMPARE(modifier->testBEGIN_STEP, ==, true);
256 TEST_COMPARE(modifier->testEND_STEP, ==, true);
257
258 // Testing that values can be set through the Modifier.
259 auto x = solutionHistory->getCurrentState()->getX();
260 TEST_FLOATING_EQUALITY(modifier->testCurrentValue, get_ele(*(x), 0), 1.0e-14);
261 x = solutionHistory->getWorkingState()->getX();
262 TEST_FLOATING_EQUALITY(modifier->testWorkingValue, get_ele(*(x), 0), 1.0e-14);
263 auto Dt = solutionHistory->getWorkingState()->getTimeStep();
264 TEST_FLOATING_EQUALITY(modifier->testDt, Dt, 1.0e-14);
265
266 TEST_COMPARE(modifier->testName, ==, "Subcycling - Modifier");
267}
268
269// ************************************************************
270// ************************************************************
271class StepperSubcyclingObserverTest
272 : virtual public Tempus::StepperSubcyclingObserverBase<double> {
273 public:
275 StepperSubcyclingObserverTest()
276 : testBEGIN_STEP(false),
277 testEND_STEP(false),
278 testCurrentValue(-0.99),
279 testWorkingValue(-0.99),
280 testDt(15.0),
281 testName("Subcyling")
282 {
283 }
284
286 virtual ~StepperSubcyclingObserverTest() {}
287
289 virtual void observe(
290 Teuchos::RCP<const Tempus::SolutionHistory<double> > sh,
291 Teuchos::RCP<const Tempus::StepperSubcycling<double> > /*stepper*/,
292 const typename Tempus::StepperSubcyclingAppAction<double>::ACTION_LOCATION
293 actLoc)
294 {
295 switch (actLoc) {
296 case StepperSubcyclingAppAction<double>::BEGIN_STEP: {
297 testBEGIN_STEP = true;
298 auto x = sh->getCurrentState()->getX();
299 testCurrentValue = get_ele(*(x), 0);
300 break;
301 }
302 case StepperSubcyclingAppAction<double>::END_STEP: {
303 testEND_STEP = true;
304 auto x = sh->getWorkingState()->getX();
305 testWorkingValue = get_ele(*(x), 0);
306 break;
307 }
308 default:
309 TEUCHOS_TEST_FOR_EXCEPTION(true, std::logic_error,
310 "Error - unknown action location.\n");
311 }
312 }
313
314 bool testBEGIN_STEP;
315 bool testEND_STEP;
316 double testCurrentValue;
317 double testWorkingValue;
318 double testDt;
319 std::string testName;
320};
321
322TEUCHOS_UNIT_TEST(Subcycling, AppAction_Observer)
323{
324 // Setup the SinCosModel ------------------------------------
325 auto model = rcp(new Tempus_Test::SinCosModel<double>());
326 auto modelME = rcp_dynamic_cast<const Thyra::ModelEvaluator<double> >(model);
327
328 // Setup Stepper for field solve ----------------------------
329 auto stepper = rcp(new Tempus::StepperSubcycling<double>());
330 auto stepperFE = Tempus::createStepperForwardEuler(modelME, Teuchos::null);
331 auto observer = rcp(new StepperSubcyclingObserverTest());
332 stepper->setAppAction(observer);
333 stepper->setSubcyclingStepper(stepperFE);
334
335 stepper->setSubcyclingMinTimeStep(15);
336 stepper->setSubcyclingInitTimeStep(15.0);
337 stepper->setSubcyclingMaxTimeStep(15.0);
338 stepper->setSubcyclingMaxFailures(10);
339 stepper->setSubcyclingMaxConsecFailures(5);
340 stepper->setSubcyclingScreenOutputIndexInterval(1);
341 stepper->setSubcyclingPrintDtChanges(true);
342
343 // Setup TimeStepControl ------------------------------------
344 auto timeStepControl = rcp(new Tempus::TimeStepControl<double>());
345 timeStepControl->setInitIndex(0);
346 timeStepControl->setInitTime(0.0);
347 timeStepControl->setFinalTime(1.0);
348 timeStepControl->setInitTimeStep(15.0);
349 timeStepControl->initialize();
350
351 // Setup initial condition SolutionState --------------------
352 auto inArgsIC = model->getNominalValues();
353 auto icSolution =
354 rcp_const_cast<Thyra::VectorBase<double> >(inArgsIC.get_x());
355 auto icState = Tempus::createSolutionStateX(icSolution);
356 icState->setTime(timeStepControl->getInitTime());
357 icState->setIndex(timeStepControl->getInitIndex());
358 icState->setTimeStep(0.0); // dt for ICs are indicated by zero.
359 icState->setSolutionStatus(Tempus::Status::PASSED); // ICs are passing.
360
361 // Setup SolutionHistory ------------------------------------
362 auto solutionHistory = rcp(new Tempus::SolutionHistory<double>());
363 solutionHistory->setName("Forward States");
364 solutionHistory->setStorageType(Tempus::STORAGE_TYPE_STATIC);
365 solutionHistory->setStorageLimit(2);
366 solutionHistory->addState(icState);
367
368 // Ensure ICs are consistent and stepper memory is set (e.g., xDot is set).
369 stepper->setInitialConditions(solutionHistory);
370 stepper->initialize();
371
372 // Take one time step.
373 stepper->setInitialConditions(solutionHistory);
374 solutionHistory->initWorkingState();
375 solutionHistory->getWorkingState()->setTimeStep(15.0);
376 stepper->takeStep(solutionHistory);
377
378 // Testing that each ACTION_LOCATION has been called.
379 TEST_COMPARE(observer->testBEGIN_STEP, ==, true);
380 TEST_COMPARE(observer->testEND_STEP, ==, true);
381
382 // Testing that values can be observed through the observer.
383 auto x = solutionHistory->getCurrentState()->getX();
384 TEST_FLOATING_EQUALITY(observer->testCurrentValue, get_ele(*(x), 0), 1.0e-14);
385 x = solutionHistory->getWorkingState()->getX();
386 TEST_FLOATING_EQUALITY(observer->testWorkingValue, get_ele(*(x), 0), 1.0e-14);
387 TEST_FLOATING_EQUALITY(observer->testDt, 15.0, 1.0e-14);
388
389 TEST_COMPARE(observer->testName, ==, "Subcyling");
390}
391
392// ************************************************************
393// ************************************************************
394class StepperSubcyclingModifierXTest
395 : virtual public Tempus::StepperSubcyclingModifierXBase<double> {
396 public:
398 StepperSubcyclingModifierXTest()
399 : testX_BEGIN_STEP(false),
400 testXDOT_END_STEP(false),
401 testX(-0.99),
402 testXDot(-0.99),
403 testDt(1.5),
404 testTime(1.5)
405 {
406 }
407
409 virtual ~StepperSubcyclingModifierXTest() {}
410
412 virtual void modify(Teuchos::RCP<Thyra::VectorBase<double> > x,
413 const double time, const double dt,
414 const typename Tempus::StepperSubcyclingModifierXBase<
415 double>::MODIFIER_TYPE modType)
416 {
417 switch (modType) {
418 case StepperSubcyclingModifierXBase<double>::X_BEGIN_STEP: {
419 testX_BEGIN_STEP = true;
420 testX = get_ele(*(x), 0);
421 testDt = dt;
422 break;
423 }
424 case StepperSubcyclingModifierXBase<double>::XDOT_END_STEP: {
425 testXDOT_END_STEP = true;
426 testXDot = get_ele(*(x), 0);
427 testTime = time;
428 break;
429 }
430 default:
431 TEUCHOS_TEST_FOR_EXCEPTION(true, std::logic_error,
432 "Error - unknown action location.\n");
433 }
434 }
435
436 bool testX_BEGIN_STEP;
437 bool testXDOT_END_STEP;
438 double testX;
439 double testXDot;
440 double testDt;
441 double testTime;
442};
443
444TEUCHOS_UNIT_TEST(Subcycling, AppAction_ModifierX)
445{
446 // Setup the SinCosModel ------------------------------------
447 auto model = rcp(new Tempus_Test::SinCosModel<double>());
448 auto modelME = rcp_dynamic_cast<const Thyra::ModelEvaluator<double> >(model);
449
450 // Setup Stepper for field solve ----------------------------
451 auto stepper = rcp(new Tempus::StepperSubcycling<double>());
452 auto stepperFE = Tempus::createStepperForwardEuler(modelME, Teuchos::null);
453 auto modifierX = rcp(new StepperSubcyclingModifierXTest());
454 stepper->setAppAction(modifierX);
455 stepper->setSubcyclingStepper(stepperFE);
456
457 stepper->setSubcyclingMinTimeStep(15);
458 stepper->setSubcyclingInitTimeStep(15.0);
459 stepper->setSubcyclingMaxTimeStep(15.0);
460 stepper->setSubcyclingMaxFailures(10);
461 stepper->setSubcyclingMaxConsecFailures(5);
462 stepper->setSubcyclingScreenOutputIndexInterval(1);
463 stepper->setSubcyclingPrintDtChanges(true);
464
465 // Setup TimeStepControl ------------------------------------
466 auto timeStepControl = rcp(new Tempus::TimeStepControl<double>());
467 timeStepControl->setInitIndex(0);
468 timeStepControl->setInitTime(0.0);
469 timeStepControl->setFinalTime(1.0);
470 timeStepControl->setInitTimeStep(15.0);
471 timeStepControl->initialize();
472
473 // Setup initial condition SolutionState --------------------
474 auto inArgsIC = model->getNominalValues();
475 auto icSolution =
476 rcp_const_cast<Thyra::VectorBase<double> >(inArgsIC.get_x());
477 auto icSolutionDot =
478 rcp_const_cast<Thyra::VectorBase<double> >(inArgsIC.get_x_dot());
479 auto icState = Tempus::createSolutionStateX(icSolution, icSolutionDot);
480 icState->setTime(timeStepControl->getInitTime());
481 icState->setIndex(timeStepControl->getInitIndex());
482 icState->setTimeStep(0.0); // dt for ICs are indicated by zero.
483 icState->setSolutionStatus(Tempus::Status::PASSED); // ICs are passing.
484
485 // Setup SolutionHistory ------------------------------------
486 auto solutionHistory = rcp(new Tempus::SolutionHistory<double>());
487 solutionHistory->setName("Forward States");
488 solutionHistory->setStorageType(Tempus::STORAGE_TYPE_STATIC);
489 solutionHistory->setStorageLimit(2);
490 solutionHistory->addState(icState);
491
492 // Ensure ICs are consistent and stepper memory is set (e.g., xDot is set).
493 stepper->setInitialConditions(solutionHistory);
494 stepper->initialize();
495
496 // Take one time step.
497 stepper->setInitialConditions(solutionHistory);
498 solutionHistory->initWorkingState();
499 solutionHistory->getWorkingState()->setTimeStep(15.0);
500 stepper->takeStep(solutionHistory);
501
502 // Take one time step.
503 stepper->setInitialConditions(solutionHistory);
504 solutionHistory->initWorkingState();
505 solutionHistory->getWorkingState()->setTimeStep(15.0);
506 stepper->takeStep(solutionHistory);
507
508 // Testing that each ACTION_LOCATION has been called.
509 TEST_COMPARE(modifierX->testX_BEGIN_STEP, ==, true);
510 TEST_COMPARE(modifierX->testXDOT_END_STEP, ==, true);
511
512 // Testing that values can be set through the Modifier.
513 auto x = solutionHistory->getCurrentState()->getX();
514 TEST_FLOATING_EQUALITY(modifierX->testX, get_ele(*(x), 0), 1.0e-14);
515 // Temporary memory for xDot is not guarranteed to exist outside the Stepper.
516 auto xDot = solutionHistory->getWorkingState()->getXDot();
517 if (xDot == Teuchos::null) xDot = stepper->getStepperXDot();
518
519 TEST_FLOATING_EQUALITY(modifierX->testXDot, get_ele(*(xDot), 0), 1.0e-14);
520 auto Dt = solutionHistory->getWorkingState()->getTimeStep();
521 TEST_FLOATING_EQUALITY(modifierX->testDt, Dt, 1.0e-14);
522
523 auto time = solutionHistory->getWorkingState()->getTime();
524 TEST_FLOATING_EQUALITY(modifierX->testTime, time, 1.0e-14);
525}
526
527} // namespace Tempus_Unit_Test
Tempus_StepperSubcyclingModifierBase.hpp
Tempus_StepperSubcyclingModifierDefault.hpp
Tempus_StepperSubcyclingModifierXBase.hpp
Tempus_StepperSubcyclingModifierXDefault.hpp
Tempus_StepperSubcyclingObserverBase.hpp
Tempus_StepperSubcyclingObserverDefault.hpp
Tempus_UnitTest_Utils.hpp
Tempus::SolutionHistory
SolutionHistory is basically a container of SolutionStates. SolutionHistory maintains a collection of...
Definition Tempus_SolutionHistory_decl.hpp:119
Tempus::StepperSubcyclingAppAction::ACTION_LOCATION
ACTION_LOCATION
Indicates the location of application action (see algorithm).
Definition Tempus_StepperSubcyclingAppAction.hpp:38
Tempus::TimeStepControl
TimeStepControl manages the time step size. There several mechanisms that effect the time step size a...
Definition Tempus_TimeStepControl_decl.hpp:52
Tempus_Test::SinCosModel
Sine-Cosine model problem from Rythmos. This is a canonical Sine-Cosine differential equation.
Definition SinCosModel_decl.hpp:110
Tempus_Unit_Test
Definition Tempus_UnitTest_BackwardEuler.cpp:22
Tempus_Unit_Test::TEUCHOS_UNIT_TEST
TEUCHOS_UNIT_TEST(BackwardEuler, Default_Construction)
Definition Tempus_UnitTest_BackwardEuler.cpp:33
Tempus::STORAGE_TYPE_STATIC
@ STORAGE_TYPE_STATIC
Keep a fix number of states.
Definition Tempus_SolutionHistory_decl.hpp:23
Tempus::createStepperBackwardEuler
Teuchos::RCP< StepperBackwardEuler< Scalar > > createStepperBackwardEuler(const Teuchos::RCP< const Thyra::ModelEvaluator< Scalar > > &model, Teuchos::RCP< Teuchos::ParameterList > pl)
Nonmember constructor - ModelEvaluator and ParameterList.
Definition Tempus_StepperBackwardEuler_impl.hpp:431
Tempus::createSolutionStateX
Teuchos::RCP< SolutionState< Scalar > > createSolutionStateX(const Teuchos::RCP< Thyra::VectorBase< Scalar > > &x, const Teuchos::RCP< Thyra::VectorBase< Scalar > > &xdot=Teuchos::null, const Teuchos::RCP< Thyra::VectorBase< Scalar > > &xdotdot=Teuchos::null)
Nonmember constructor from non-const solution vectors, x.
Definition Tempus_SolutionState_impl.hpp:349
Tempus::createStepperForwardEuler
Teuchos::RCP< StepperForwardEuler< Scalar > > createStepperForwardEuler(const Teuchos::RCP< const Thyra::ModelEvaluator< Scalar > > &model, Teuchos::RCP< Teuchos::ParameterList > pl)
Nonmember constructor - ModelEvaluator and ParameterList.
Definition Tempus_StepperForwardEuler_impl.hpp:221
Tempus::defaultSolverParameters
Teuchos::RCP< Teuchos::ParameterList > defaultSolverParameters()
Returns the default solver ParameterList for implicit Steppers.
Definition Tempus_Stepper_impl.hpp:413
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