int CVSpilsSetGSTypeB(void *cvadj_mem, int gstypeB)
{
CVadjMem ca_mem;
CVodeMem cvB_mem;
int flag;
if (cvadj_mem == NULL) {
CVProcessError(NULL, CVSPILS_ADJMEM_NULL, "CVSPILS", "CVSpilsSetGSTypeB", MSGS_CAMEM_NULL);
return(CVSPILS_ADJMEM_NULL);
}
ca_mem = (CVadjMem) cvadj_mem;
cvB_mem = ca_mem->cvb_mem;
flag = CVSpilsSetGSType(cvB_mem,gstypeB);
return(flag);
}
int CVSpilsSetGSTypeB(void *cvode_mem, int which, int gstypeB)
{
CVodeMem cv_mem;
CVadjMem ca_mem;
CVodeBMem cvB_mem;
void *cvodeB_mem;
int flag;
/* Check if cvode_mem exists */
if (cvode_mem == NULL) {
cvProcessError(NULL, CVSPILS_MEM_NULL, "CVSPILS", "CVSpilsSetGSTypeB", MSGS_CVMEM_NULL);
return(CVSPILS_MEM_NULL);
}
cv_mem = (CVodeMem) cvode_mem;
/* Was ASA initialized? */
if (cv_mem->cv_adjMallocDone == FALSE) {
cvProcessError(cv_mem, CVSPILS_NO_ADJ, "CVSPILS", "CVSpilsSetGSTypeB", MSGS_NO_ADJ);
return(CVSPILS_NO_ADJ);
}
ca_mem = cv_mem->cv_adj_mem;
/* Check which */
if ( which >= ca_mem->ca_nbckpbs ) {
cvProcessError(cv_mem, CVSPILS_ILL_INPUT, "CVSPILS", "CVSpilsSetGSTypeB", MSGS_BAD_WHICH);
return(CVSPILS_ILL_INPUT);
}
/* Find the CVodeBMem entry in the linked list corresponding to which */
cvB_mem = ca_mem->cvB_mem;
while (cvB_mem != NULL) {
if ( which == cvB_mem->cv_index ) break;
cvB_mem = cvB_mem->cv_next;
}
cvodeB_mem = (void *) (cvB_mem->cv_mem);
flag = CVSpilsSetGSType(cvodeB_mem,gstypeB);
return(flag);
}
void FCV_BPSPGMR(int *pretype, int *gstype, int *maxl, realtype *delt, int *ier)
{
/*
Call CVBPSpgmr to specify the SPGMR linear solver:
CV_cvodemem is the pointer to the CVODE memory block
pretype is the preconditioner type
gstype is the Gram-Schmidt process type
maxl is the maximum Krylov dimension
delt is the linear convergence tolerance factor
*/
*ier = CVBPSpgmr(CV_cvodemem, *pretype, *maxl, CVBP_Data);
if (*ier != CVSPILS_SUCCESS) return;
*ier = CVSpilsSetGSType(CV_cvodemem, *gstype);
if (*ier != CVSPILS_SUCCESS) return;
*ier = CVSpilsSetDelt(CV_cvodemem, *delt);
if (*ier != CVSPILS_SUCCESS) return;
CV_ls = CV_LS_SPGMR;
}
PetscErrorCode TSSetUp_Sundials(TS ts)
{
TS_Sundials *cvode = (TS_Sundials*)ts->data;
PetscErrorCode ierr;
PetscInt glosize,locsize,i,flag;
PetscScalar *y_data,*parray;
void *mem;
PC pc;
PCType pctype;
PetscBool pcnone;
PetscFunctionBegin;
/* get the vector size */
ierr = VecGetSize(ts->vec_sol,&glosize);CHKERRQ(ierr);
ierr = VecGetLocalSize(ts->vec_sol,&locsize);CHKERRQ(ierr);
/* allocate the memory for N_Vec y */
cvode->y = N_VNew_Parallel(cvode->comm_sundials,locsize,glosize);
if (!cvode->y) SETERRQ(PETSC_COMM_SELF,1,"cvode->y is not allocated");
/* initialize N_Vec y: copy ts->vec_sol to cvode->y */
ierr = VecGetArray(ts->vec_sol,&parray);CHKERRQ(ierr);
y_data = (PetscScalar*) N_VGetArrayPointer(cvode->y);
for (i = 0; i < locsize; i++) y_data[i] = parray[i];
ierr = VecRestoreArray(ts->vec_sol,NULL);CHKERRQ(ierr);
ierr = VecDuplicate(ts->vec_sol,&cvode->update);CHKERRQ(ierr);
ierr = VecDuplicate(ts->vec_sol,&cvode->ydot);CHKERRQ(ierr);
ierr = PetscLogObjectParent((PetscObject)ts,(PetscObject)cvode->update);CHKERRQ(ierr);
ierr = PetscLogObjectParent((PetscObject)ts,(PetscObject)cvode->ydot);CHKERRQ(ierr);
/*
Create work vectors for the TSPSolve_Sundials() routine. Note these are
allocated with zero space arrays because the actual array space is provided
by Sundials and set using VecPlaceArray().
*/
ierr = VecCreateMPIWithArray(PetscObjectComm((PetscObject)ts),1,locsize,PETSC_DECIDE,0,&cvode->w1);CHKERRQ(ierr);
ierr = VecCreateMPIWithArray(PetscObjectComm((PetscObject)ts),1,locsize,PETSC_DECIDE,0,&cvode->w2);CHKERRQ(ierr);
ierr = PetscLogObjectParent((PetscObject)ts,(PetscObject)cvode->w1);CHKERRQ(ierr);
ierr = PetscLogObjectParent((PetscObject)ts,(PetscObject)cvode->w2);CHKERRQ(ierr);
/* Call CVodeCreate to create the solver memory and the use of a Newton iteration */
mem = CVodeCreate(cvode->cvode_type, CV_NEWTON);
if (!mem) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_MEM,"CVodeCreate() fails");
cvode->mem = mem;
/* Set the pointer to user-defined data */
flag = CVodeSetUserData(mem, ts);
if (flag) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"CVodeSetUserData() fails");
/* Sundials may choose to use a smaller initial step, but will never use a larger step. */
flag = CVodeSetInitStep(mem,(realtype)ts->time_step);
if (flag) SETERRQ(PetscObjectComm((PetscObject)ts),PETSC_ERR_LIB,"CVodeSetInitStep() failed");
if (cvode->mindt > 0) {
flag = CVodeSetMinStep(mem,(realtype)cvode->mindt);
if (flag) {
if (flag == CV_MEM_NULL) SETERRQ(PetscObjectComm((PetscObject)ts),PETSC_ERR_LIB,"CVodeSetMinStep() failed, cvode_mem pointer is NULL");
else if (flag == CV_ILL_INPUT) SETERRQ(PetscObjectComm((PetscObject)ts),PETSC_ERR_LIB,"CVodeSetMinStep() failed, hmin is nonpositive or it exceeds the maximum allowable step size");
else SETERRQ(PetscObjectComm((PetscObject)ts),PETSC_ERR_LIB,"CVodeSetMinStep() failed");
}
}
if (cvode->maxdt > 0) {
flag = CVodeSetMaxStep(mem,(realtype)cvode->maxdt);
if (flag) SETERRQ(PetscObjectComm((PetscObject)ts),PETSC_ERR_LIB,"CVodeSetMaxStep() failed");
}
/* Call CVodeInit to initialize the integrator memory and specify the
* user's right hand side function in u'=f(t,u), the inital time T0, and
* the initial dependent variable vector cvode->y */
flag = CVodeInit(mem,TSFunction_Sundials,ts->ptime,cvode->y);
if (flag) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"CVodeInit() fails, flag %d",flag);
/* specifies scalar relative and absolute tolerances */
flag = CVodeSStolerances(mem,cvode->reltol,cvode->abstol);
if (flag) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"CVodeSStolerances() fails, flag %d",flag);
/* Specify max num of steps to be taken by cvode in its attempt to reach the next output time */
flag = CVodeSetMaxNumSteps(mem,ts->max_steps);
/* call CVSpgmr to use GMRES as the linear solver. */
/* setup the ode integrator with the given preconditioner */
ierr = TSSundialsGetPC(ts,&pc);CHKERRQ(ierr);
ierr = PCGetType(pc,&pctype);CHKERRQ(ierr);
ierr = PetscObjectTypeCompare((PetscObject)pc,PCNONE,&pcnone);CHKERRQ(ierr);
if (pcnone) {
flag = CVSpgmr(mem,PREC_NONE,0);
if (flag) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"CVSpgmr() fails, flag %d",flag);
} else {
flag = CVSpgmr(mem,PREC_LEFT,cvode->maxl);
if (flag) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"CVSpgmr() fails, flag %d",flag);
/* Set preconditioner and solve routines Precond and PSolve,
and the pointer to the user-defined block data */
flag = CVSpilsSetPreconditioner(mem,TSPrecond_Sundials,TSPSolve_Sundials);
if (flag) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"CVSpilsSetPreconditioner() fails, flag %d", flag);
}
flag = CVSpilsSetGSType(mem, MODIFIED_GS);
if (flag) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"CVSpgmrSetGSType() fails, flag %d",flag);
PetscFunctionReturn(0);
}
int main()
{
realtype abstol=ATOL, reltol=RTOL, t, tout;
N_Vector c;
WebData wdata;
void *cvode_mem;
booleantype firstrun;
int jpre, gstype, flag;
int ns, mxns, iout;
c = NULL;
wdata = NULL;
cvode_mem = NULL;
/* Initializations */
c = N_VNew_Serial(NEQ);
if(check_flag((void *)c, "N_VNew_Serial", 0)) return(1);
wdata = AllocUserData();
if(check_flag((void *)wdata, "AllocUserData", 2)) return(1);
InitUserData(wdata);
ns = wdata->ns;
mxns = wdata->mxns;
/* Print problem description */
PrintIntro();
/* Loop over jpre and gstype (four cases) */
for (jpre = PREC_LEFT; jpre <= PREC_RIGHT; jpre++) {
for (gstype = MODIFIED_GS; gstype <= CLASSICAL_GS; gstype++) {
/* Initialize c and print heading */
CInit(c, wdata);
PrintHeader(jpre, gstype);
/* Call CVodeInit or CVodeReInit, then CVSpgmr to set up problem */
firstrun = (jpre == PREC_LEFT) && (gstype == MODIFIED_GS);
if (firstrun) {
cvode_mem = CVodeCreate(CV_BDF, CV_NEWTON);
if(check_flag((void *)cvode_mem, "CVodeCreate", 0)) return(1);
wdata->cvode_mem = cvode_mem;
flag = CVodeSetUserData(cvode_mem, wdata);
if(check_flag(&flag, "CVodeSetUserData", 1)) return(1);
flag = CVodeInit(cvode_mem, f, T0, c);
if(check_flag(&flag, "CVodeInit", 1)) return(1);
flag = CVodeSStolerances(cvode_mem, reltol, abstol);
if (check_flag(&flag, "CVodeSStolerances", 1)) return(1);
flag = CVSpgmr(cvode_mem, jpre, MAXL);
if(check_flag(&flag, "CVSpgmr", 1)) return(1);
flag = CVSpilsSetGSType(cvode_mem, gstype);
if(check_flag(&flag, "CVSpilsSetGSType", 1)) return(1);
flag = CVSpilsSetEpsLin(cvode_mem, DELT);
if(check_flag(&flag, "CVSpilsSetEpsLin", 1)) return(1);
flag = CVSpilsSetPreconditioner(cvode_mem, Precond, PSolve);
if(check_flag(&flag, "CVSpilsSetPreconditioner", 1)) return(1);
} else {
flag = CVodeReInit(cvode_mem, T0, c);
if(check_flag(&flag, "CVodeReInit", 1)) return(1);
flag = CVSpilsSetPrecType(cvode_mem, jpre);
check_flag(&flag, "CVSpilsSetPrecType", 1);
flag = CVSpilsSetGSType(cvode_mem, gstype);
if(check_flag(&flag, "CVSpilsSetGSType", 1)) return(1);
}
/* Print initial values */
if (firstrun) PrintAllSpecies(c, ns, mxns, T0);
/* Loop over output points, call CVode, print sample solution values. */
tout = T1;
for (iout = 1; iout <= NOUT; iout++) {
flag = CVode(cvode_mem, tout, c, &t, CV_NORMAL);
PrintOutput(cvode_mem, t);
if (firstrun && (iout % 3 == 0)) PrintAllSpecies(c, ns, mxns, t);
if(check_flag(&flag, "CVode", 1)) break;
if (tout > RCONST(0.9)) tout += DTOUT;
else tout *= TOUT_MULT;
}
/* Print final statistics, and loop for next case */
PrintFinalStats(cvode_mem);
}
}
/* Free all memory */
CVodeFree(&cvode_mem);
N_VDestroy_Serial(c);
FreeUserData(wdata);
return(0);
}
int main(void)
{
realtype abstol, reltol, t, tout;
N_Vector u;
UserData data;
void *cvode_mem;
int linsolver, iout, flag;
u = NULL;
data = NULL;
cvode_mem = NULL;
/* Allocate memory, and set problem data, initial values, tolerances */
u = N_VNew_Serial(NEQ);
if(check_flag((void *)u, "N_VNew_Serial", 0)) return(1);
data = AllocUserData();
if(check_flag((void *)data, "AllocUserData", 2)) return(1);
InitUserData(data);
SetInitialProfiles(u, data->dx, data->dy);
abstol=ATOL;
reltol=RTOL;
/* Call CVodeCreate to create the solver memory and specify the
* Backward Differentiation Formula and the use of a Newton iteration */
cvode_mem = CVodeCreate(CV_BDF, CV_NEWTON);
if(check_flag((void *)cvode_mem, "CVodeCreate", 0)) return(1);
/* Set the pointer to user-defined data */
flag = CVodeSetUserData(cvode_mem, data);
if(check_flag(&flag, "CVodeSetUserData", 1)) return(1);
/* Call CVodeInit to initialize the integrator memory and specify the
* user's right hand side function in u'=f(t,u), the inital time T0, and
* the initial dependent variable vector u. */
flag = CVodeInit(cvode_mem, f, T0, u);
if(check_flag(&flag, "CVodeInit", 1)) return(1);
/* Call CVodeSStolerances to specify the scalar relative tolerance
* and scalar absolute tolerances */
flag = CVodeSStolerances(cvode_mem, reltol, abstol);
if (check_flag(&flag, "CVodeSStolerances", 1)) return(1);
/* START: Loop through SPGMR, SPBCG and SPTFQMR linear solver modules */
for (linsolver = 0; linsolver < 3; ++linsolver) {
if (linsolver != 0) {
/* Re-initialize user data */
InitUserData(data);
SetInitialProfiles(u, data->dx, data->dy);
/* Re-initialize CVode for the solution of the same problem, but
using a different linear solver module */
flag = CVodeReInit(cvode_mem, T0, u);
if (check_flag(&flag, "CVodeReInit", 1)) return(1);
}
/* Attach a linear solver module */
switch(linsolver) {
/* (a) SPGMR */
case(USE_SPGMR):
/* Print header */
printf(" -------");
printf(" \n| SPGMR |\n");
printf(" -------\n");
/* Call CVSpgmr to specify the linear solver CVSPGMR
with left preconditioning and the maximum Krylov dimension maxl */
flag = CVSpgmr(cvode_mem, PREC_LEFT, 0);
if(check_flag(&flag, "CVSpgmr", 1)) return(1);
/* Set modified Gram-Schmidt orthogonalization, preconditioner
setup and solve routines Precond and PSolve, and the pointer
to the user-defined block data */
flag = CVSpilsSetGSType(cvode_mem, MODIFIED_GS);
if(check_flag(&flag, "CVSpilsSetGSType", 1)) return(1);
break;
/* (b) SPBCG */
case(USE_SPBCG):
/* Print header */
printf(" -------");
printf(" \n| SPBCG |\n");
printf(" -------\n");
/* Call CVSpbcg to specify the linear solver CVSPBCG
with left preconditioning and the maximum Krylov dimension maxl */
flag = CVSpbcg(cvode_mem, PREC_LEFT, 0);
if(check_flag(&flag, "CVSpbcg", 1)) return(1);
break;
/* (c) SPTFQMR */
case(USE_SPTFQMR):
/* Print header */
printf(" ---------");
printf(" \n| SPTFQMR |\n");
printf(" ---------\n");
/* Call CVSptfqmr to specify the linear solver CVSPTFQMR
with left preconditioning and the maximum Krylov dimension maxl */
flag = CVSptfqmr(cvode_mem, PREC_LEFT, 0);
if(check_flag(&flag, "CVSptfqmr", 1)) return(1);
break;
}
/* Set preconditioner setup and solve routines Precond and PSolve,
and the pointer to the user-defined block data */
flag = CVSpilsSetPreconditioner(cvode_mem, Precond, PSolve);
if(check_flag(&flag, "CVSpilsSetPreconditioner", 1)) return(1);
/* In loop over output points, call CVode, print results, test for error */
printf(" \n2-species diurnal advection-diffusion problem\n\n");
for (iout=1, tout = TWOHR; iout <= NOUT; iout++, tout += TWOHR) {
flag = CVode(cvode_mem, tout, u, &t, CV_NORMAL);
PrintOutput(cvode_mem, u, t);
if(check_flag(&flag, "CVode", 1)) break;
}
PrintFinalStats(cvode_mem, linsolver);
} /* END: Loop through SPGMR, SPBCG and SPTFQMR linear solver modules */
/* Free memory */
N_VDestroy_Serial(u);
FreeUserData(data);
CVodeFree(&cvode_mem);
return(0);
}
PetscErrorCode TSSetUp_Sundials_Nonlinear(TS ts)
{
TS_Sundials *cvode = (TS_Sundials*)ts->data;
PetscErrorCode ierr;
PetscInt glosize,locsize,i,flag;
PetscScalar *y_data,*parray;
void *mem;
const PCType pctype;
PetscTruth pcnone;
Vec sol = ts->vec_sol;
PetscFunctionBegin;
ierr = PCSetFromOptions(cvode->pc);CHKERRQ(ierr);
/* get the vector size */
ierr = VecGetSize(ts->vec_sol,&glosize);CHKERRQ(ierr);
ierr = VecGetLocalSize(ts->vec_sol,&locsize);CHKERRQ(ierr);
/* allocate the memory for N_Vec y */
cvode->y = N_VNew_Parallel(cvode->comm_sundials,locsize,glosize);
if (!cvode->y) SETERRQ(1,"cvode->y is not allocated");
/* initialize N_Vec y: copy ts->vec_sol to cvode->y */
ierr = VecGetArray(ts->vec_sol,&parray);CHKERRQ(ierr);
y_data = (PetscScalar *) N_VGetArrayPointer(cvode->y);
for (i = 0; i < locsize; i++) y_data[i] = parray[i];
/*ierr = PetscMemcpy(y_data,parray,locsize*sizeof(PETSC_SCALAR)); CHKERRQ(ierr);*/
ierr = VecRestoreArray(ts->vec_sol,PETSC_NULL);CHKERRQ(ierr);
ierr = VecDuplicate(ts->vec_sol,&cvode->update);CHKERRQ(ierr);
ierr = VecDuplicate(ts->vec_sol,&cvode->func);CHKERRQ(ierr);
ierr = PetscLogObjectParent(ts,cvode->update);CHKERRQ(ierr);
ierr = PetscLogObjectParent(ts,cvode->func);CHKERRQ(ierr);
/*
Create work vectors for the TSPSolve_Sundials() routine. Note these are
allocated with zero space arrays because the actual array space is provided
by Sundials and set using VecPlaceArray().
*/
ierr = VecCreateMPIWithArray(((PetscObject)ts)->comm,locsize,PETSC_DECIDE,0,&cvode->w1);CHKERRQ(ierr);
ierr = VecCreateMPIWithArray(((PetscObject)ts)->comm,locsize,PETSC_DECIDE,0,&cvode->w2);CHKERRQ(ierr);
ierr = PetscLogObjectParent(ts,cvode->w1);CHKERRQ(ierr);
ierr = PetscLogObjectParent(ts,cvode->w2);CHKERRQ(ierr);
/* Call CVodeCreate to create the solver memory and the use of a Newton iteration */
mem = CVodeCreate(cvode->cvode_type, CV_NEWTON);
if (!mem) SETERRQ(PETSC_ERR_MEM,"CVodeCreate() fails");
cvode->mem = mem;
/* Set the pointer to user-defined data */
flag = CVodeSetUserData(mem, ts);
if (flag) SETERRQ(PETSC_ERR_LIB,"CVodeSetUserData() fails");
/* Call CVodeInit to initialize the integrator memory and specify the
* user's right hand side function in u'=f(t,u), the inital time T0, and
* the initial dependent variable vector cvode->y */
flag = CVodeInit(mem,TSFunction_Sundials,ts->ptime,cvode->y);
if (flag){
SETERRQ1(PETSC_ERR_LIB,"CVodeInit() fails, flag %d",flag);
}
flag = CVodeSStolerances(mem,cvode->reltol,cvode->abstol);
if (flag){
SETERRQ1(PETSC_ERR_LIB,"CVodeSStolerances() fails, flag %d",flag);
}
/* initialize the number of steps */
ierr = TSMonitor(ts,ts->steps,ts->ptime,sol);CHKERRQ(ierr);
/* call CVSpgmr to use GMRES as the linear solver. */
/* setup the ode integrator with the given preconditioner */
ierr = PCGetType(cvode->pc,&pctype);CHKERRQ(ierr);
ierr = PetscTypeCompare((PetscObject)cvode->pc,PCNONE,&pcnone);CHKERRQ(ierr);
if (pcnone){
flag = CVSpgmr(mem,PREC_NONE,0);
if (flag) SETERRQ1(PETSC_ERR_LIB,"CVSpgmr() fails, flag %d",flag);
} else {
flag = CVSpgmr(mem,PREC_LEFT,0);
if (flag) SETERRQ1(PETSC_ERR_LIB,"CVSpgmr() fails, flag %d",flag);
/* Set preconditioner and solve routines Precond and PSolve,
and the pointer to the user-defined block data */
flag = CVSpilsSetPreconditioner(mem,TSPrecond_Sundials,TSPSolve_Sundials);
if (flag) SETERRQ1(PETSC_ERR_LIB,"CVSpilsSetPreconditioner() fails, flag %d", flag);
}
flag = CVSpilsSetGSType(mem, MODIFIED_GS);
if (flag) SETERRQ1(PETSC_ERR_LIB,"CVSpgmrSetGSType() fails, flag %d",flag);
PetscFunctionReturn(0);
}
int main()
{
realtype abstol, reltol, t, tout;
N_Vector u;
UserData data;
void *cvode_mem;
int iout, flag;
u = NULL;
data = NULL;
cvode_mem = NULL;
/* Allocate memory, and set problem data, initial values, tolerances */
u = N_VNew_Serial(NEQ);
if(check_flag((void *)u, "N_VNew_Serial", 0)) return(1);
data = AllocUserData();
if(check_flag((void *)data, "AllocUserData", 2)) return(1);
InitUserData(data);
SetInitialProfiles(u, data->dx, data->dy);
abstol=ATOL;
reltol=RTOL;
/* Call CVodeCreate to create the solver memory and specify the
* Backward Differentiation Formula and the use of a Newton iteration */
cvode_mem = CVodeCreate(CV_BDF, CV_NEWTON);
if(check_flag((void *)cvode_mem, "CVodeCreate", 0)) return(1);
/* Set the pointer to user-defined data */
flag = CVodeSetUserData(cvode_mem, data);
if(check_flag(&flag, "CVodeSetUserData", 1)) return(1);
/* Call CVodeInit to initialize the integrator memory and specify the
* user's right hand side function in u'=f(t,u), the inital time T0, and
* the initial dependent variable vector u. */
flag = CVodeInit(cvode_mem, f, T0, u);
if(check_flag(&flag, "CVodeInit", 1)) return(1);
/* Call CVodeSStolerances to specify the scalar relative tolerance
* and scalar absolute tolerances */
flag = CVodeSStolerances(cvode_mem, reltol, abstol);
if (check_flag(&flag, "CVodeSStolerances", 1)) return(1);
/* Call CVSpgmr to specify the linear solver CVSPGMR
* with left preconditioning and the maximum Krylov dimension maxl */
flag = CVSpgmr(cvode_mem, PREC_LEFT, 0);
if(check_flag(&flag, "CVSpgmr", 1)) return(1);
/* set the JAcobian-times-vector function */
flag = CVSpilsSetJacTimesVecFn(cvode_mem, jtv);
if(check_flag(&flag, "CVSpilsSetJacTimesVecFn", 1)) return(1);
/* Set modified Gram-Schmidt orthogonalization */
flag = CVSpilsSetGSType(cvode_mem, MODIFIED_GS);
if(check_flag(&flag, "CVSpilsSetGSType", 1)) return(1);
/* Set the preconditioner solve and setup functions */
flag = CVSpilsSetPreconditioner(cvode_mem, Precond, PSolve);
if(check_flag(&flag, "CVSpilsSetPreconditioner", 1)) return(1);
/* In loop over output points, call CVode, print results, test for error */
printf(" \n2-species diurnal advection-diffusion problem\n\n");
for (iout=1, tout = TWOHR; iout <= NOUT; iout++, tout += TWOHR) {
flag = CVode(cvode_mem, tout, u, &t, CV_NORMAL);
PrintOutput(cvode_mem, u, t);
if(check_flag(&flag, "CVode", 1)) break;
}
PrintFinalStats(cvode_mem);
/* Free memory */
N_VDestroy_Serial(u);
FreeUserData(data);
CVodeFree(&cvode_mem);
return(0);
}
