/* Fortran interface to C "set" routines having integer
arguments; see farkode.h for further details */
void FARK_SETIIN(char key_name[], long int *ival, int *ier) {
if (!strncmp(key_name, "ORDER", 5))
*ier = ARKodeSetOrder(ARK_arkodemem, (int) *ival);
else if (!strncmp(key_name, "DENSE_ORDER", 11))
*ier = ARKodeSetDenseOrder(ARK_arkodemem, (int) *ival);
else if (!strncmp(key_name, "LINEAR", 6))
*ier = ARKodeSetLinear(ARK_arkodemem, (int) *ival);
else if (!strncmp(key_name, "NONLINEAR", 9))
*ier = ARKodeSetNonlinear(ARK_arkodemem);
else if (!strncmp(key_name, "FIXEDPOINT", 10))
*ier = ARKodeSetFixedPoint(ARK_arkodemem, (long int) *ival);
else if (!strncmp(key_name, "NEWTON", 6))
*ier = ARKodeSetNewton(ARK_arkodemem);
else if (!strncmp(key_name, "EXPLICIT", 8))
*ier = ARKodeSetExplicit(ARK_arkodemem);
else if (!strncmp(key_name, "IMPLICIT", 8))
*ier = ARKodeSetImplicit(ARK_arkodemem);
else if (!strncmp(key_name, "IMEX", 4))
*ier = ARKodeSetImEx(ARK_arkodemem);
else if (!strncmp(key_name, "IRK_TABLE_NUM", 13))
*ier = ARKodeSetIRKTableNum(ARK_arkodemem, (int) *ival);
else if (!strncmp(key_name, "ERK_TABLE_NUM", 13))
*ier = ARKodeSetERKTableNum(ARK_arkodemem, (int) *ival);
else if (!strncmp(key_name, "ARK_TABLE_NUM", 13))
*ier = ARKodeSetARKTableNum(ARK_arkodemem, (int) ival[0], (int) ival[1]);
else if (!strncmp(key_name, "MAX_NSTEPS", 10))
*ier = ARKodeSetMaxNumSteps(ARK_arkodemem, (int) *ival);
else if (!strncmp(key_name, "HNIL_WARNS", 10))
*ier = ARKodeSetMaxHnilWarns(ARK_arkodemem, (int) *ival);
else if (!strncmp(key_name, "PREDICT_METHOD", 14))
*ier = ARKodeSetPredictorMethod(ARK_arkodemem, (int) *ival);
else if (!strncmp(key_name, "MAX_ERRFAIL", 11))
*ier = ARKodeSetMaxErrTestFails(ARK_arkodemem, (int) *ival);
else if (!strncmp(key_name, "MAX_CONVFAIL", 12))
*ier = ARKodeSetMaxConvFails(ARK_arkodemem, (int) *ival);
else if (!strncmp(key_name, "MAX_NITERS", 10))
*ier = ARKodeSetMaxNonlinIters(ARK_arkodemem, (int) *ival);
else if (!strncmp(key_name, "ADAPT_SMALL_NEF", 15))
*ier = ARKodeSetSmallNumEFails(ARK_arkodemem, (int) *ival);
else if (!strncmp(key_name, "LSETUP_MSBP", 11))
*ier = ARKodeSetMaxStepsBetweenLSet(ARK_arkodemem, (int) *ival);
else {
*ier = -99;
printf("FARKSETIIN: Unrecognized key.\n\n");
}
return;
}
void Arkode::initialize()
{
_properties = dynamic_cast<ISystemProperties*>(_system);
_continuous_system = dynamic_cast<IContinuous*>(_system);
_event_system = dynamic_cast<IEvent*>(_system);
_mixed_system = dynamic_cast<IMixedSystem*>(_system);
_time_system = dynamic_cast<ITime*>(_system);
IGlobalSettings* global_settings = dynamic_cast<ISolverSettings*>(_arkodesettings)->getGlobalSettings();
// Kennzeichnung, dass initialize()() (vor der Integration) aufgerufen wurde
_idid = 5000;
_tLastEvent = 0.0;
_event_n = 0;
SolverDefaultImplementation::initialize();
_dimSys = _continuous_system->getDimContinuousStates();
_dimZeroFunc = _event_system->getDimZeroFunc();
if (_dimSys == 0)
_dimSys = 1; // introduce dummy state
if (_dimSys <= 0)
{
_idid = -1;
throw ModelicaSimulationError(SOLVER,"Cvode::initialize()");
}
else
{
// Allocate state vectors, stages and temporary arrays
if (_z)
delete[] _z;
if (_zInit)
delete[] _zInit;
if (_zWrite)
delete[] _zWrite;
if (_zeroSign)
delete[] _zeroSign;
if (_absTol)
delete[] _absTol;
if(_delta)
delete [] _delta;
if(_deltaInv)
delete [] _deltaInv;
if(_ysave)
delete [] _ysave;
_z = new double[_dimSys];
_zInit = new double[_dimSys];
_zWrite = new double[_dimSys];
_zeroSign = new int[_dimZeroFunc];
_absTol = new double[_dimSys];
_delta =new double[_dimSys];
_deltaInv =new double[_dimSys];
_ysave =new double[_dimSys];
memset(_z, 0, _dimSys * sizeof(double));
memset(_zInit, 0, _dimSys * sizeof(double));
memset(_ysave, 0, _dimSys * sizeof(double));
// Counter initialisieren
_outStps = 0;
if (_arkodesettings->getDenseOutput())
{
// Ausgabeschrittweite
_hOut = global_settings->gethOutput();
}
// Allocate memory for the solver //arkodeCreate
_arkodeMem = ARKodeCreate();
/*
if (check_flag((void*) _cvodeMem, "CVodeCreate", 0))
{
_idid = -5;
throw ModelicaSimulationError(SOLVER,"Cvode::initialize()");
}
*/
//
// Make Cvode ready for integration
//
// Set initial values for CVODE
_continuous_system->evaluateAll(IContinuous::CONTINUOUS);
_continuous_system->getContinuousStates(_zInit);
memcpy(_z, _zInit, _dimSys * sizeof(double));
// Get nominal values
_absTol[0] = 1.0; // in case of dummy state
_continuous_system->getNominalStates(_absTol);
for (int i = 0; i < _dimSys; i++)
_absTol[i] *= dynamic_cast<ISolverSettings*>(_arkodesettings)->getATol();
_ARK_y0 = N_VMake_Serial(_dimSys, _zInit);
_ARK_y = N_VMake_Serial(_dimSys, _z);
_ARK_yWrite = N_VMake_Serial(_dimSys, _zWrite);
_ARK_absTol = N_VMake_Serial(_dimSys, _absTol);
/*
if (check_flag((void*) _CV_y0, "N_VMake_Serial", 0))
{
_idid = -5;
throw ModelicaSimulationError(SOLVER,"Cvode::initialize()");
}
*/
// Initialize Cvode (Initial values are required)
_idid = ARKodeInit(_arkodeMem, NULL, ARK_fCallback, _tCurrent, _ARK_y0);
if (_idid < 0)
{
_idid = -5;
throw ModelicaSimulationError(SOLVER,"Cvode::initialize()");
}
// Set Tolerances
_idid = ARKodeSVtolerances(_arkodeMem, dynamic_cast<ISolverSettings*>(_arkodesettings)->getRTol(), _ARK_absTol); // RTOL and ATOL
if (_idid < 0)
throw ModelicaSimulationError(SOLVER,"CVode::initialize()");
// Set the pointer to user-defined data
_idid = ARKodeSetUserData(_arkodeMem, _data);
if (_idid < 0)
throw ModelicaSimulationError(SOLVER,"Cvode::initialize()");
_idid = ARKodeSetInitStep(_arkodeMem, 1e-6); // INITIAL STEPSIZE
if (_idid < 0)
throw ModelicaSimulationError(SOLVER,"Cvode::initialize()");
_idid = ARKodeSetMaxConvFails(_arkodeMem, 100); // Maximale Fehler im Konvergenztest
if (_idid < 0)
throw ModelicaSimulationError(SOLVER,"CVoder::initialize()");
_idid = ARKodeSetMinStep(_arkodeMem, dynamic_cast<ISolverSettings*>(_arkodesettings)->getLowerLimit()); // MINIMUM STEPSIZE
if (_idid < 0)
throw ModelicaSimulationError(SOLVER,"CVode::initialize()");
_idid = ARKodeSetMaxStep(_arkodeMem, global_settings->getEndTime() / 10.0); // MAXIMUM STEPSIZE
if (_idid < 0)
throw ModelicaSimulationError(SOLVER,"CVode::initialize()");
_idid = ARKodeSetMaxNonlinIters(_arkodeMem, 5); // Max number of iterations
if (_idid < 0)
throw ModelicaSimulationError(SOLVER,"CVode::initialize()");
_idid = ARKodeSetMaxErrTestFails(_arkodeMem, 100);
if (_idid < 0)
throw ModelicaSimulationError(SOLVER,"CVode::initialize()");
_idid = ARKodeSetMaxNumSteps(_arkodeMem, 1000); // Max Number of steps
if (_idid < 0)
throw ModelicaSimulationError(SOLVER,"Cvode::initialize()");
// Initialize linear solver
/*
#ifdef USE_SUNDIALS_LAPACK
_idid = CVLapackDense(_cvodeMem, _dimSys);
#else
*/
_idid = ARKDense(_arkodeMem, _dimSys);
/*
#endif
*/
if (_idid < 0)
throw ModelicaSimulationError(SOLVER,"Cvode::initialize()");
// Use own jacobian matrix
// Check if Colored Jacobians are worth to use
if (_idid < 0)
throw ModelicaSimulationError(SOLVER,"ARKode::initialize()");
if (_dimZeroFunc)
{
_idid = ARKodeRootInit(_arkodeMem, _dimZeroFunc, &ARK_ZerofCallback);
memset(_zeroSign, 0, _dimZeroFunc * sizeof(int));
_idid = ARKodeSetRootDirection(_arkodeMem, _zeroSign);
if (_idid < 0)
throw ModelicaSimulationError(SOLVER,"CVode::initialize()");
memset(_zeroSign, -1, _dimZeroFunc * sizeof(int));
memset(_zeroVal, -1, _dimZeroFunc * sizeof(int));
}
_arkode_initialized = true;
//
// CVODE is ready for integration
//
// BOOST_LOG_SEV(cvode_lg::get(), cvode_info) << "CVode initialized";
}
}
/* Main Program */
int main()
{
/* general problem parameters */
realtype T0 = RCONST(0.0); /* initial time */
realtype T1 = RCONST(0.4); /* first output time */
realtype TMult = RCONST(10.0); /* output time multiplication factor */
int Nt = 12; /* total number of output times */
long int NEQ = 3; /* number of dependent vars. */
realtype reltol;
int rootsfound[2];
long int nst, nst_a, nfe, nfi, nsetups;
long int nje, nfeLS, nni, ncfn, netf, nge;
int flag, rtflag; /* reusable error-checking flags */
FILE *UFID;
realtype t, tout;
int iout;
/* general problem variables */
N_Vector y = NULL; /* empty vector for storing solution */
N_Vector atols = NULL; /* empty vector for absolute tolerances */
void *arkode_mem = NULL; /* empty ARKode memory structure */
/* set up the initial conditions */
realtype u0 = RCONST(1.0);
realtype v0 = RCONST(0.0);
realtype w0 = RCONST(0.0);
/* Initial problem output */
printf("\nRobertson ODE test problem (with rootfinding):\n");
printf(" initial conditions: u0 = %g, v0 = %g, w0 = %g\n",u0,v0,w0);
/* Initialize data structures */
y = N_VNew_Serial(NEQ); /* Create serial vector for solution */
if (check_flag((void *) y, "N_VNew_Serial", 0)) return 1;
atols = N_VNew_Serial(NEQ); /* Create serial vector absolute tolerances */
if (check_flag((void *) atols, "N_VNew_Serial", 0)) return 1;
NV_Ith_S(y,0) = u0; /* Set initial conditions into y */
NV_Ith_S(y,1) = v0;
NV_Ith_S(y,2) = w0;
arkode_mem = ARKodeCreate(); /* Create the solver memory */
if (check_flag((void *)arkode_mem, "ARKodeCreate", 0)) return 1;
/* Call ARKodeInit to initialize the integrator memory and specify the
hand-side side function in y'=f(t,y), the inital time T0, and
the initial dependent variable vector y. Note: since this
problem is fully implicit, we set f_E to NULL and f_I to f. */
flag = ARKodeInit(arkode_mem, NULL, f, T0, y);
if (check_flag(&flag, "ARKodeInit", 1)) return 1;
/* Set tolerances */
reltol = RCONST(1.0e-4);
NV_Ith_S(atols,0) = RCONST(1.0e-8);
NV_Ith_S(atols,1) = RCONST(1.0e-11);
NV_Ith_S(atols,2) = RCONST(1.0e-8);
/* Set routines */
flag = ARKodeSetMaxErrTestFails(arkode_mem, 20); /* Increase max error test fails */
if (check_flag(&flag, "ARKodeSetMaxErrTestFails", 1)) return 1;
flag = ARKodeSetMaxNonlinIters(arkode_mem, 8); /* Increase max nonlinear iterations */
if (check_flag(&flag, "ARKodeSetMaxNonlinIters", 1)) return 1;
flag = ARKodeSetNonlinConvCoef(arkode_mem, 1.e-7); /* Update nonlinear solver convergence coeff. */
if (check_flag(&flag, "ARKodeSetNonlinConvCoef", 1)) return 1;
flag = ARKodeSetMaxNumSteps(arkode_mem, 100000); /* Increase max number of steps */
if (check_flag(&flag, "ARKodeSetMaxNumSteps", 1)) return 1;
flag = ARKodeSVtolerances(arkode_mem, reltol, atols); /* Specify tolerances */
if (check_flag(&flag, "ARKodeSStolerances", 1)) return 1;
/* Specify the root-finding function, having 2 equations */
flag = ARKodeRootInit(arkode_mem, 2, g);
if (check_flag(&flag, "ARKodeRootInit", 1)) return 1;
/* Linear solver specification */
flag = ARKDense(arkode_mem, NEQ); /* Specify dense linear solver */
if (check_flag(&flag, "ARKDense", 1)) return 1;
flag = ARKDlsSetDenseJacFn(arkode_mem, Jac); /* Set the Jacobian routine */
if (check_flag(&flag, "ARKDlsSetDenseJacFn", 1)) return 1;
/* Open output stream for results, output comment line */
UFID = fopen("solution.txt","w");
fprintf(UFID,"# t u v w\n");
/* output initial condition to disk */
fprintf(UFID," %.16e %.16e %.16e %.16e\n",
T0, NV_Ith_S(y,0), NV_Ith_S(y,1), NV_Ith_S(y,2));
/* Main time-stepping loop: calls ARKode to perform the integration, then
prints results. Stops when the final time has been reached */
t = T0;
printf(" t u v w\n");
printf(" -----------------------------------------------------\n");
printf(" %12.5e %12.5e %12.5e %12.5e\n",
t, NV_Ith_S(y,0), NV_Ith_S(y,1), NV_Ith_S(y,2));
tout = T1;
iout = 0;
while(1) {
flag = ARKode(arkode_mem, tout, y, &t, ARK_NORMAL); /* call integrator */
if (check_flag(&flag, "ARKode", 1)) break;
printf(" %12.5e %12.5e %12.5e %12.5e\n", t, /* access/print solution */
NV_Ith_S(y,0), NV_Ith_S(y,1), NV_Ith_S(y,2));
fprintf(UFID," %.16e %.16e %.16e %.16e\n",
t, NV_Ith_S(y,0), NV_Ith_S(y,1), NV_Ith_S(y,2));
if (flag == ARK_ROOT_RETURN) { /* check if a root was found */
rtflag = ARKodeGetRootInfo(arkode_mem, rootsfound);
if (check_flag(&rtflag, "ARKodeGetRootInfo", 1)) return 1;
printf(" rootsfound[] = %3d %3d\n",
rootsfound[0], rootsfound[1]);
}
if (flag >= 0) { /* successful solve: update output time */
iout++;
tout *= TMult;
} else { /* unsuccessful solve: break */
fprintf(stderr,"Solver failure, stopping integration\n");
break;
}
if (iout == Nt) break; /* stop after enough outputs */
}
printf(" -----------------------------------------------------\n");
fclose(UFID);
/* Print some final statistics */
flag = ARKodeGetNumSteps(arkode_mem, &nst);
check_flag(&flag, "ARKodeGetNumSteps", 1);
flag = ARKodeGetNumStepAttempts(arkode_mem, &nst_a);
check_flag(&flag, "ARKodeGetNumStepAttempts", 1);
flag = ARKodeGetNumRhsEvals(arkode_mem, &nfe, &nfi);
check_flag(&flag, "ARKodeGetNumRhsEvals", 1);
flag = ARKodeGetNumLinSolvSetups(arkode_mem, &nsetups);
check_flag(&flag, "ARKodeGetNumLinSolvSetups", 1);
flag = ARKodeGetNumErrTestFails(arkode_mem, &netf);
check_flag(&flag, "ARKodeGetNumErrTestFails", 1);
flag = ARKodeGetNumNonlinSolvIters(arkode_mem, &nni);
check_flag(&flag, "ARKodeGetNumNonlinSolvIters", 1);
flag = ARKodeGetNumNonlinSolvConvFails(arkode_mem, &ncfn);
check_flag(&flag, "ARKodeGetNumNonlinSolvConvFails", 1);
flag = ARKDlsGetNumJacEvals(arkode_mem, &nje);
check_flag(&flag, "ARKDlsGetNumJacEvals", 1);
flag = ARKDlsGetNumRhsEvals(arkode_mem, &nfeLS);
check_flag(&flag, "ARKDlsGetNumRhsEvals", 1);
flag = ARKodeGetNumGEvals(arkode_mem, &nge);
check_flag(&flag, "ARKodeGetNumGEvals", 1);
printf("\nFinal Solver Statistics:\n");
printf(" Internal solver steps = %li (attempted = %li)\n",
nst, nst_a);
printf(" Total RHS evals: Fe = %li, Fi = %li\n", nfe, nfi);
printf(" Total linear solver setups = %li\n", nsetups);
printf(" Total RHS evals for setting up the linear system = %li\n", nfeLS);
printf(" Total number of Jacobian evaluations = %li\n", nje);
printf(" Total number of Newton iterations = %li\n", nni);
printf(" Total root-function g evals = %li\n", nge);
printf(" Total number of nonlinear solver convergence failures = %li\n", ncfn);
printf(" Total number of error test failures = %li\n", netf);
/* Clean up and return with successful completion */
N_VDestroy_Serial(y); /* Free y vector */
ARKodeFree(&arkode_mem); /* Free integrator memory */
return 0;
}
