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00042 #ifndef NOX_SOLVER_TENSORBASED_H
00043 #define NOX_SOLVER_TENSORBASED_H
00044
00045 #include "NOX_Solver_Generic.H"
00046 #include "NOX_Solver_PrePostOperator.H"
00047 #include "Teuchos_ParameterList.hpp"
00048 #include "NOX_Utils.H"
00049 #include "Teuchos_RCP.hpp"
00050
00051 #include "NOX_LineSearch_Generic.H"
00052 #include "NOX_LineSearch_Utils_Printing.H"
00053 #include "NOX_LineSearch_Utils_Counters.H"
00054 #include "NOX_LineSearch_Utils_Slope.H"
00055
00056
00057 namespace NOX {
00058
00059 namespace Direction {
00060 class Generic;
00061 }
00062
00063 namespace Solver {
00064
00267 class TensorBased : public Generic {
00268
00269 public:
00270
00276 TensorBased(const Teuchos::RCP<NOX::Abstract::Group>& grp,
00277 const Teuchos::RCP<NOX::StatusTest::Generic>& tests,
00278 const Teuchos::RCP<Teuchos::ParameterList>& params);
00279
00281 virtual ~TensorBased();
00282
00283 virtual void reset(const NOX::Abstract::Vector& initialGuess,
00284 const Teuchos::RCP<NOX::StatusTest::Generic>& tests);
00285 virtual void reset(const NOX::Abstract::Vector& initialGuess);
00286 virtual NOX::StatusTest::StatusType getStatus();
00287 virtual NOX::StatusTest::StatusType step();
00288 virtual NOX::StatusTest::StatusType solve();
00289 virtual const NOX::Abstract::Group& getSolutionGroup() const;
00290 virtual const NOX::Abstract::Group& getPreviousSolutionGroup() const;
00291 virtual int getNumIterations() const;
00292 virtual const Teuchos::ParameterList& getList() const;
00293
00294 protected:
00295
00297 virtual void init();
00298
00300 virtual void printUpdate();
00301
00303 virtual bool reset(const Teuchos::RCP<NOX::Abstract::Group>& grp,
00304 const Teuchos::RCP<NOX::StatusTest::Generic>& tests,
00305 const Teuchos::RCP<Teuchos::ParameterList>& params);
00306 protected:
00307
00309 bool computeTensorDirection(NOX::Abstract::Group& soln,
00310 const NOX::Solver::Generic& solver);
00311
00313 double calculateBeta(double qa, double qb, double qc, double& qval,
00314 double& lambdaBar, double lambda=1.0) const;
00315
00317 bool computeCurvilinearStep(NOX::Abstract::Vector& dir,
00318 const NOX::Abstract::Group& soln,
00319 const NOX::Solver::Generic& s,
00320 double& lambda);
00321
00323 bool implementGlobalStrategy(NOX::Abstract::Group& newGrp,
00324 double& step,
00325 const NOX::Solver::Generic& s);
00326
00327
00329 bool performLinesearch(NOX::Abstract::Group& newsoln,
00330 double& step,
00331 const NOX::Abstract::Vector& lsDir,
00332 const NOX::Solver::Generic& s);
00333
00335 double getNormModelResidual(const NOX::Abstract::Vector& dir,
00336 const NOX::Abstract::Group& soln,
00337 bool isTensorModel) const;
00338
00340 void printDirectionInfo(std::string dirName,
00341 const NOX::Abstract::Vector& dir,
00342 const NOX::Abstract::Group& soln,
00343 bool isTensorModel) const;
00344
00346 double getDirectionalDerivative(const NOX::Abstract::Vector& dir,
00347 const NOX::Abstract::Group& soln) const;
00348
00350 double selectLambda(double newf, double oldf,
00351 double oldfprime, double lambda);
00352
00354 void throwError(const string& functionName,
00355 const string& errorMsg) const;
00356
00357 protected:
00358
00360 Teuchos::RCP<NOX::GlobalData> globalDataPtr;
00361
00363 Teuchos::RCP<NOX::Utils> utilsPtr;
00364
00366 Teuchos::RCP<NOX::Abstract::Group> solnPtr;
00367
00369
00371 Teuchos::RCP<NOX::Abstract::Group> oldSolnPtr;
00372
00374
00376 Teuchos::RCP<NOX::Abstract::Vector> newtonVecPtr;
00377
00379
00381 Teuchos::RCP<NOX::Abstract::Vector> tensorVecPtr;
00382
00384
00386 Teuchos::RCP<NOX::Abstract::Vector> aVecPtr;
00387
00389
00391 Teuchos::RCP<NOX::Abstract::Vector> sVecPtr;
00392
00394
00396 Teuchos::RCP<NOX::Abstract::Vector> tmpVecPtr;
00397
00399
00401 Teuchos::RCP<NOX::Abstract::Vector> residualVecPtr;
00402
00404 Teuchos::RCP<NOX::StatusTest::Generic> testPtr;
00405
00407 NOX::StatusTest::CheckType checkType;
00408
00410 Teuchos::RCP<Teuchos::ParameterList> paramsPtr;
00411
00413
00414
00416
00417
00419 Teuchos::ParameterList* linearParamsPtr;
00420
00422 double stepSize;
00423
00425 double beta;
00426
00428 int nIter;
00429
00431 NOX::StatusTest::StatusType status;
00432
00434 enum StepType
00435 {
00436 TensorStep,
00437 NewtonStep
00438 };
00439
00441 StepType requestedBaseStep;
00442
00444
00445
00447 enum LineSearchType
00448 {
00449 Curvilinear,
00450 Standard,
00451 Dual,
00452 FullStep,
00453 Newton
00454 };
00455
00457 LineSearchType lsType;
00458
00460 enum ConvergenceCriteriaType
00461 {
00463 ArmijoGoldstein,
00465 AredPred,
00467 None
00468 };
00469
00471 ConvergenceCriteriaType convCriteria;
00472
00474 enum LambdaSelectionType
00475 {
00476 Halving,
00477 Quadratic
00478 };
00479
00481 LambdaSelectionType lambdaSelection;
00482
00484 enum RecoveryStepType {
00486 Constant,
00488 LastComputedStep
00489 };
00490
00492 RecoveryStepType recoveryStepType;
00493
00495 bool useModifiedMethod;
00496
00498 bool isNewtonDirection;
00499
00501 bool doRescue;
00502
00504 double minStep;
00505
00507 double defaultStep;
00508
00510 double recoveryStep;
00511
00513 int maxIters;
00514
00516 double alpha;
00517
00519 double sTinvJF;
00520
00522 double sTinvJa;
00523
00525 NOX::LineSearch::Utils::Printing print;
00526
00528 NOX::LineSearch::Utils::Counters counter;
00529
00531 NOX::LineSearch::Utils::Slope slopeObj;
00532
00534 mutable int numJvMults;
00535
00537 mutable int numJ2vMults;
00538
00540 NOX::Solver::PrePostOperator prePostOperator;
00541
00542 };
00543 }
00544 }
00545
00546 #endif