/
KinsolCall.cpp
287 lines (233 loc) · 6.49 KB
/
KinsolCall.cpp
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#include "stdafx.h"
#include "KinsolCall.h"
#include "KinsolSettings.h"
#include "Math/Interfaces/ILapack.h" // needed for solution of linear system with Lapack
#include "Math/Implementation/Constants.h" // definition of constants like uround
KinsolCall::KinsolCall(IAlgLoop* algLoop, IKinsolSettings* settings)
: _algLoop (algLoop)
, _kinsolSettings ((IKinsolSettings*)settings)
, _y (NULL)
, _yHelp (NULL)
, _f (NULL)
, _fHelp (NULL)
, _jac (NULL)
, _dimSys (0)
, _firstCall (true)
, _iterationStatus (CONTINUE)
{
_data = ((void*)this);
}
KinsolCall::~KinsolCall()
{
if(_y) delete [] _y;
if(_yHelp) delete [] _yHelp;
if(_f) delete [] _f;
if(_fHelp) delete [] _fHelp;
if(_jac) delete [] _jac;
N_VDestroy_Serial(_Kin_y);
N_VDestroy_Serial(_Kin_yScale);
N_VDestroy_Serial(_Kin_fScale);
KINFree(&_kinMem);
}
void KinsolCall::init()
{
int idid;
_firstCall = false;
//(Re-) Initialization of algebraic loop
_algLoop->init();
// Dimension of the system (number of variables)
int
dimDouble = _algLoop->getDimVars(IAlgLoop::REAL),
dimInt = 0,
dimBool = 0;
// Check system dimension
if (dimDouble != _dimSys)
{
_dimSys = dimDouble;
if(_dimSys > 0)
{
// Initialization of vector of unknowns
if(_y) delete [] _y;
if(_f) delete [] _f;
if(_yHelp) delete [] _yHelp;
if(_fHelp) delete [] _fHelp;
if(_jac) delete [] _jac;
_y = new double[_dimSys];
_f = new double[_dimSys];
_yHelp = new double[_dimSys];
_fHelp = new double[_dimSys];
_jac = new double[_dimSys*_dimSys];
_algLoop->giveVars(_y,NULL,NULL);
memset(_f,0,_dimSys*sizeof(double));
memset(_yHelp,0,_dimSys*sizeof(double));
memset(_fHelp,0,_dimSys*sizeof(double));
memset(_jac,0,_dimSys*_dimSys*sizeof(double)); // Wird nur benötigt, falls symbolisch vorhanden
for (int i=0;i<_dimSys;i++)
_yHelp[i] = 1;
_Kin_y = N_VMake_Serial(_dimSys, _y);
_Kin_yScale = N_VMake_Serial(_dimSys, _yHelp);
_Kin_fScale = N_VMake_Serial(_dimSys, _yHelp);
_kinMem = KINCreate();
//Set Options
idid = KINSetNumMaxIters(_kinMem, _kinsolSettings->getNewtMax());
idid = KINInit(_kinMem, kin_fCallback, _Kin_y);
if (check_flag(&idid, "KINInit", 1))
throw std::invalid_argument("KinsolCall::init()");
idid = KINSetUserData(_kinMem, _data);
if (check_flag(&idid, "KINSetUserData", 1))
throw std::invalid_argument("KinsolCall::init()");
//idid = KINDense(_kinMem, _dimSys);
idid = KINSpgmr(_kinMem,_dimSys);
if (check_flag(&idid, "KINSpgmr", 1))
throw std::invalid_argument("KinsolCall::init()");
}
else
{
_iterationStatus = SOLVERERROR;
}
}
}
void KinsolCall::solve(const IContinous::UPDATE command)
{
int idid;
idid = KINSol(_kinMem, _Kin_y, KIN_LINESEARCH, _Kin_yScale, _Kin_yScale);
if (check_flag(&idid, "KINSol", 1))
throw std::invalid_argument("KinsolCall::solve()");
/*
long int
dimRHS = 1, // Dimension of right hand side of linear system (=b)
irtrn = 0; // Retrun-flag of Fortran code
int
totStps = 0; // Total number of steps
// If init() was not called yet
if (_firstCall)
init();
// Get initial values from system
_algLoop->giveVars(_y,NULL,NULL);
//_algLoop->update(command);
_algLoop->giveRHS(_f,NULL,NULL);
// Reset status flag
_iterationStatus = CONTINUE;
while(_iterationStatus == CONTINUE)
{
_iterationStatus = DONE;
// Check stopping criterion
if(totStps)
{
for(int i=0; i<_dimSys; ++i)
{
if(fabs(_f[i]) > _kinsolSettings->getRtol() * (_kinsolSettings->getAtol() + fabs(_f[i])))
{
_iterationStatus = CONTINUE;
break;
}
}
}
else
_iterationStatus = CONTINUE;
// New right hand side
calcFunction(_y,_f);
if(_iterationStatus == CONTINUE)
{
if(totStps < _kinsolSettings->getNewtMax())
{
// Determination of Jacobian (Fortran-format)
if(_algLoop->isLinear())
{
//calcFunction(_yHelp,_fHelp);
_algLoop->giveAMatrix(_jac);
//dgesv_(&_dimSys,&dimRHS,_jac,&_dimSys,_fHelp,_f,&_dimSys,&irtrn);
memcpy(_y,_f,_dimSys*sizeof(double));
_algLoop->setVars(_y,NULL,NULL);
_iterationStatus = DONE;
break;
}
else
{
calcJacobian();
}
// Solve linear System
//dgesv_(&_dimSys,&dimRHS,_jac,&_dimSys,_fHelp,_f,&_dimSys,&irtrn);
if(irtrn!=0)
{
// TODO: Throw an error message here.
_iterationStatus = SOLVERERROR;
break;
}
// Increase counter
++ totStps;
// New solution
for(int i=0; i<_dimSys; ++i)
_y[i] -= _kinsolSettings->getDelta() * _f[i];
}
else
_iterationStatus = SOLVERERROR;
}
}
*/
}
IAlgLoopSolver::ITERATIONSTATUS KinsolCall::getIterationStatus()
{
return _iterationStatus;
}
void KinsolCall::calcFunction(const double *y, double *residual)
{
_algLoop->setVars(y,NULL,NULL);
_algLoop->update(IContinous::CONTINOUS);
_algLoop->giveRHS(residual,NULL,NULL);
}
int KinsolCall::kin_fCallback(N_Vector y,N_Vector fval, void *user_data)
{
((KinsolCall*) user_data)->calcFunction(NV_DATA_S(y),NV_DATA_S(fval));
return(0);
}
void KinsolCall::calcJacobian()
{
for(int j=0; j<_dimSys; ++j)
{
// Reset variables for every column
memcpy(_yHelp,_y,_dimSys*sizeof(double));
// Finite difference
_yHelp[j] += 1e-6;
calcFunction(_yHelp,_fHelp);
// Build Jacobian in Fortran format
for(int i=0; i<_dimSys; ++i)
_jac[i+j*_dimSys] = (_fHelp[i] - _f[i]) / 1e-6;
}
}
int KinsolCall::check_flag(void *flagvalue, char *funcname, int opt)
{
int *errflag;
/* Check if SUNDIALS function returned NULL pointer - no memory allocated */
if (opt == 0 && flagvalue == NULL) {
fprintf(stderr,
"\nSUNDIALS_ERROR: %s() failed - returned NULL pointer\n\n",
funcname);
return(1);
}
/* Check if flag < 0 */
else if (opt == 1) {
errflag = (int *) flagvalue;
if (*errflag < 0) {
fprintf(stderr,
"\nSUNDIALS_ERROR: %s() failed with flag = %d\n\n",
funcname, *errflag);
return(1);
}
}
/* Check if function returned NULL pointer - no memory allocated */
else if (opt == 2 && flagvalue == NULL) {
fprintf(stderr,
"\nMEMORY_ERROR: %s() failed - returned NULL pointer\n\n",
funcname);
return(1);
}
return(0);
}
using boost::extensions::factory;
BOOST_EXTENSION_TYPE_MAP_FUNCTION {
types.get<std::map<std::string, factory<IAlgLoopSolver,IAlgLoop*, IKinsolSettings*> > >()
["KinsolCall"].set<KinsolCall>();
types.get<std::map<std::string, factory<IKinsolSettings> > >()
["KinsolSettings"].set<KinsolSettings>();
}