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// GetDP - Copyright (C) 1997-2018 P. Dular and C. Geuzaine, University of Liege
//
// See the LICENSE.txt file for license information. Please report all
// issues on https://gitlab.onelab.info/getdp/getdp/issues
//
// Contributor(s):
// Michael Asam
#include <stdio.h>
#include "ProData.h"
#include "DofData.h"
#include "SolvingOperations.h"
#include "SolvingAnalyse.h"
#include "Message.h"
#include "Cal_Quantity.h"
extern struct CurrentData Current;
extern int Flag_IterativeLoopN;
extern int Flag_IterativeLoopConverged;
/* ------------------------------------------------------------------------ */
/* C a l M a x E r r o r R a t i o */
/* ------------------------------------------------------------------------ */
double CalcMaxErrorRatio(Resolution *Resolution_P,
DofData *DofData_P0,
List_T *ILsystems_L,
List_T *LEPostOp_L,
List_T *xPrevious_L,
List_T *PostOpSolutionPrevious_L)
{
DofData *DofData_P=NULL;
DefineSystem *DefineSystem_P;
IterativeLoopSystem ILsystem;
LoopErrorPostOperation ILPostOp;
PostOpSolutions *PostOpSolutions_P;
Solution *Solution_P;
gVector *xPrevious_P, *xCurrent_P; // new and last solution vector
gVector xError; // Local Truncation Error vector
int NbrSolutions, PostOpSolLength;
double ErrorRatio, MaxErrorRatio;
MaxErrorRatio = 0.;
// Loop through all given systems
for(int i = 0; i < List_Nbr(ILsystems_L); i++){
List_Read(ILsystems_L, i, &ILsystem);
DofData_P = DofData_P0 + ILsystem.SystemIndex;
DefineSystem_P = (DefineSystem*)List_Pointer(Resolution_P->DefineSystem,
ILsystem.SystemIndex);
xPrevious_P = (gVector*)List_Pointer(xPrevious_L, i);
xCurrent_P = &DofData_P->CurrentSolution->x;
LinAlg_CreateVector(&xError, &DofData_P->Solver, DofData_P->NbrDof);
switch (ILsystem.NormOf) {
case SOLUTION:
// Vector of errors: xError = xCurrent - xPrevious
LinAlg_CopyVector(xCurrent_P, &xError);
LinAlg_SubVectorVector(&xError, xPrevious_P, &xError);
Cal_SolutionErrorRatio(&xError, xCurrent_P,
ILsystem.SystemILreltol, ILsystem.SystemILabstol,
ILsystem.NormType, &ErrorRatio);
break;
case RECALCRESIDUAL:
// Calculating the actual residual: xError = b(xn)-A(xn)*xn
// Works also for "Solve" but its computational expensive
ReGenerate_System(DefineSystem_P, DofData_P, DofData_P0, 1);
LinAlg_ProdMatrixVector(&DofData_P->A, &DofData_P->CurrentSolution->x, &xError);
LinAlg_SubVectorVector(&DofData_P->b, &xError, &xError);
Cal_SolutionErrorRatio(&xError, &DofData_P->b,
ILsystem.SystemILreltol, ILsystem.SystemILabstol,
ILsystem.NormType, &ErrorRatio);
break;
case RESIDUAL:
// Or alternatively look at the old residual (from e.g. SolveJac)
// -> More efficient but causes one extra iteration
Cal_SolutionErrorRatio(&DofData_P->res, &DofData_P->b,
ILsystem.SystemILreltol, ILsystem.SystemILabstol,
ILsystem.NormType, &ErrorRatio);
break;
default:
Message::Error("Unknown object for error norm");
break;
}
LinAlg_DestroyVector(&xError);
if (ErrorRatio != ErrorRatio) { // If ErrorRatio = NaN
MaxErrorRatio = ErrorRatio;
break;
}
else if (ErrorRatio > MaxErrorRatio)
MaxErrorRatio = ErrorRatio;
//Current.Residual = ErrorRatio; //kj+++ (should be commented here, Current.ResidualN used instead and defined at the end of CalcMaxErrorRatio)
if (Message::GetVerbosity() > 5) {
Message::Info("IterativeLoopN: %s of %s error ratio from system %s: %.3g",
ILsystem.NormTypeString, ILsystem.NormOfString, DefineSystem_P->Name,
ErrorRatio);
}
}
// Loop through all specified PostOperations
for(int i = 0; i < List_Nbr(LEPostOp_L); i++){
List_Read(LEPostOp_L, i, &ILPostOp);
PostOpSolutions_P = (struct PostOpSolutions*)
List_Pointer(Current.PostOpData_L, i);
NbrSolutions = List_Nbr(PostOpSolutions_P->Solutions_L);
Solution_P = (struct Solution*)List_Pointer(PostOpSolutions_P->Solutions_L,
NbrSolutions-1);
xPrevious_P = (gVector*)List_Pointer(PostOpSolutionPrevious_L, i);
xCurrent_P = &Solution_P->x;
LinAlg_AssembleVector(&Solution_P->x);
LinAlg_GetVectorSize(xCurrent_P, &PostOpSolLength);
LinAlg_CreateVector(&xError, &DofData_P0->Solver, PostOpSolLength);
// Vector of errors: xError = xCurrent - xPrevious
LinAlg_CopyVector(xCurrent_P, &xError);
LinAlg_SubVectorVector(&xError, xPrevious_P, &xError);
Cal_SolutionErrorRatio(&xError, xCurrent_P,
ILPostOp.PostOperationReltol, ILPostOp.PostOperationAbstol,
ILPostOp.NormType, &ErrorRatio);
LinAlg_DestroyVector(&xError);
if (ErrorRatio != ErrorRatio) { // If ErrorRatio = NaN
MaxErrorRatio = ErrorRatio;
break;
}
else if (ErrorRatio > MaxErrorRatio)
MaxErrorRatio = ErrorRatio;
if (Message::GetVerbosity() > 5) {
Message::Info("IterativeLoopN: %s error ratio from PostOperation %s: %.3g",
ILPostOp.NormTypeString, ILPostOp.PostOperationName,
ErrorRatio);
}
}
Current.ResidualN = MaxErrorRatio ; //kj+++ Residual computed here for IterativeLoopN
return MaxErrorRatio;
}
/* ------------------------------------------------------------------------ */
/* O p e r a t i o n _ I t e r a t i v e L o o p N */
/* ------------------------------------------------------------------------ */
void Operation_IterativeLoopN(Resolution *Resolution_P,
Operation *Operation_P,
DofData *DofData_P0,
GeoData *GeoData_P0,
Resolution *Resolution2_P,
DofData *DofData2_P0,
int *Flag_Break)
{
int NbrMaxIteration, RelaxationFactorIndex;
int Num_Iteration, NbrPostOps, SavePostOpDataIndex, NbrSolutions;
double Save_Iteration, MaxErrorRatio = 0.;
List_T *ILsystems_L, *LEPostOp_L, *xPrevious_L;
List_T *LEPostOpNames_L, *PostOpSolutionPrevious_L;
List_T *SavePostOpData_L;
gVector *xPrevious_P, *PostOpResultPrevious_P;
Value Value;
DofData *DofData_P=NULL;
IterativeLoopSystem ILsystem;
PostOpSolutions *PostOpSolutions_P;
Solution *Solution_P;
NbrMaxIteration = Operation_P->Case.IterativeLoop.NbrMaxIteration;
RelaxationFactorIndex = Operation_P->Case.IterativeLoop.RelaxationFactorIndex;
ILsystems_L = Operation_P->Case.IterativeLoop.IterativeLoopSystems_L;
LEPostOp_L = Operation_P->Case.IterativeLoop.IterativeLoopPOs_L;
if (ILsystems_L == NULL)
ILsystems_L = List_Create(1,1,sizeof(TimeLoopAdaptiveSystem));
if (LEPostOp_L == NULL)
LEPostOp_L = List_Create(1,1,sizeof(LoopErrorPostOperation));
xPrevious_L = List_Create(4,4,sizeof(gVector));
PostOpSolutionPrevious_L = List_Create(4,4,sizeof(gVector));
// Just some checks and initialization
// -----------------------------------
// Check if initial solutions for all specified systems are available
for(int i = 0; i < List_Nbr(ILsystems_L); i++){
List_Read(ILsystems_L, i, &ILsystem);
DefineSystem *sys = (DefineSystem*)List_Pointer(Resolution_P->DefineSystem,
ILsystem.SystemIndex);
DofData_P = DofData_P0 + ILsystem.SystemIndex;
if(!List_Nbr(DofData_P->Solutions))
Message::Error("No initial solution for system %s", sys->Name);
gVector xPrevious_S;
LinAlg_CreateVector(&xPrevious_S, &DofData_P->Solver, DofData_P->NbrDof);
List_Add(xPrevious_L, &xPrevious_S);
}
// Initializing stuff for PostOperations
SavePostOpData_L = Current.PostOpData_L;
Current.PostOpData_L = NULL;
SavePostOpDataIndex = Current.PostOpDataIndex;
Current.PostOpDataIndex = -1;
NbrPostOps = List_Nbr(LEPostOp_L);
LEPostOpNames_L = List_Create(NbrPostOps,1,sizeof(char *));
InitLEPostOperation(Resolution_P, DofData_P0, GeoData_P0, LEPostOp_L,
LEPostOpNames_L, PostOpSolutionPrevious_L);
// Iterative loop
// ----------------
Save_Iteration = Current.Iteration ;
for (Num_Iteration = 1; Num_Iteration <= NbrMaxIteration; Num_Iteration++) {
Flag_IterativeLoopN = 1;
if(Message::GetOnelabAction() == "stop" || Message::GetErrorCount()) break;
Current.Iteration = (double)Num_Iteration;
Get_ValueOfExpressionByIndex(RelaxationFactorIndex, NULL, 0., 0., 0., &Value);
Current.RelaxationFactor = Value.Val[0];
// Store the current solutions in xPrevious_L
for(int i = 0; i < List_Nbr(ILsystems_L); i++){
List_Read(ILsystems_L, i, &ILsystem);
DofData_P = DofData_P0 + ILsystem.SystemIndex;
xPrevious_P = (gVector*)List_Pointer(xPrevious_L, i);
LinAlg_CopyVector(&DofData_P->CurrentSolution->x, xPrevious_P);
}
// Store the current PostOperation results in PostOpSolutionPrevious_L
if (NbrPostOps != List_Nbr(Current.PostOpData_L))
Message::Error("Current.PostOpData_L list is not up to date");
for(int i = 0; i < NbrPostOps; i++){
PostOpSolutions_P = (struct PostOpSolutions*)
List_Pointer(Current.PostOpData_L, i);
NbrSolutions = List_Nbr(PostOpSolutions_P->Solutions_L);
if (!NbrSolutions)
Message::Error("No initial result for PostOperation %s",
PostOpSolutions_P->PostOperation_P->Name);
Solution_P = (struct Solution*)List_Pointer(PostOpSolutions_P->Solutions_L,
NbrSolutions-1);
PostOpResultPrevious_P = (gVector*)List_Pointer(PostOpSolutionPrevious_L, i);
LinAlg_AssembleVector(&Solution_P->x);
LinAlg_CopyVector(&Solution_P->x, PostOpResultPrevious_P);
}
Message::Info("IterativeLoopN: Non linear iteration %d (Relaxation = %g)",
(int)Current.Iteration, Current.RelaxationFactor) ;
//NB: SolveJac OR SolveJacAdapt are called here
Treatment_Operation(Resolution_P, Operation_P->Case.IterativeLoop.Operation,
DofData_P0, GeoData_P0, Resolution2_P, DofData2_P0) ;
if (Current.RelaxFac==0)
// SolveJacAdapt has not been called
// ==> Copy the default RelaxationFactor in RelaxFac
Current.RelaxFac = Current.RelaxationFactor ; // +++
if(*Flag_Break) {
*Flag_Break = 0;
Message::Info("Flag Break detected. Aborting IterativeLoop");
break;
}
else if (Message::GetLastPETScError()) {
Message::Warning("No valid solution found (PETSc-Error: %d)! "
"Aborting IterativeLoopN", Message::GetLastPETScError());
break;
}
else if (NbrPostOps) // Execute the PostOperations if necessary
Operation_PostOperation(Resolution_P, DofData_P0, GeoData_P0, LEPostOpNames_L);
// Check if converged
MaxErrorRatio = CalcMaxErrorRatio(Resolution_P,DofData_P0, ILsystems_L, LEPostOp_L,
xPrevious_L, PostOpSolutionPrevious_L);
if (MaxErrorRatio != MaxErrorRatio) { // If ErrorRatio = NaN => There was no valid solution!
Flag_IterativeLoopConverged = 0;
break;
}
Message::Info("IterativeLoopN: Largest error ratio: %.3g (after %d iteration%s)",
MaxErrorRatio, (int)Current.Iteration,
((int)Current.Iteration == 1) ? "" : "s");
if(Message::GetProgressMeterStep() > 0 && Message::GetProgressMeterStep() < 100)
Message::AddOnelabNumberChoice(Message::GetOnelabClientName() +
"/IterativeLoop/ILmaxErrorRatio",
std::vector<double>(1, MaxErrorRatio));
//NB: MaxErrorRatio is what is used for IterativeLoopN stop criterion
if (MaxErrorRatio < 1.) {
Message::Info(3, "IterativeLoopN converged (%d iterations, error ratio %g)",
(int)Current.Iteration, MaxErrorRatio);
break;
}
}
if (Num_Iteration > NbrMaxIteration) {
Num_Iteration = NbrMaxIteration;
Flag_IterativeLoopConverged = 0;
//Message::Info(3, "IterativeLoopN did NOT converge (%d iterations, error ratio %g)", //kj+++ (warning is better)
Message::Warning("IterativeLoopN did NOT converge (%d iterations, error ratio %g)",
(int)Current.Iteration, MaxErrorRatio);
}
Current.Iteration = Save_Iteration ;
Flag_IterativeLoopN = 0;
// Finally destroy vectors and delete Lists
// ----------------------------------------
for(int i = 0; i < List_Nbr(ILsystems_L); i++)
LinAlg_DestroyVector((gVector*)List_Pointer(xPrevious_L, i));
List_Delete(xPrevious_L);
ClearLEPostOperation(Resolution_P, DofData_P0, GeoData_P0, LEPostOp_L,
LEPostOpNames_L, PostOpSolutionPrevious_L, false);
Current.PostOpData_L = SavePostOpData_L;
Current.PostOpDataIndex = SavePostOpDataIndex;
}
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