PetscErrorCode TSTrajectoryGet_Basic(TSTrajectory tj,TS ts,PetscInt stepnum,PetscReal *t)
{
Vec Sol,*Y;
PetscInt Nr,i;
PetscViewer viewer;
PetscReal timepre;
char filename[PETSC_MAX_PATH_LEN];
PetscErrorCode ierr;
PetscFunctionBegin;
ierr = TSGetTotalSteps(ts,&stepnum);CHKERRQ(ierr);
ierr = PetscSNPrintf(filename,sizeof filename,"SA-data/SA-%06d.bin",stepnum);CHKERRQ(ierr);
ierr = PetscViewerBinaryOpen(PETSC_COMM_WORLD,filename,FILE_MODE_READ,&viewer);CHKERRQ(ierr);
ierr = TSGetSolution(ts,&Sol);CHKERRQ(ierr);
ierr = VecLoad(Sol,viewer);CHKERRQ(ierr);
ierr = PetscViewerBinaryRead(viewer,t,1,NULL,PETSC_REAL);CHKERRQ(ierr);
if (stepnum != 0) {
ierr = TSGetStages(ts,&Nr,&Y);CHKERRQ(ierr);
for (i=0;i<Nr ;i++) {
ierr = VecLoad(Y[i],viewer);CHKERRQ(ierr);
}
ierr = PetscViewerBinaryRead(viewer,&timepre,1,NULL,PETSC_REAL);CHKERRQ(ierr);
ierr = TSSetTimeStep(ts,-(*t)+timepre);CHKERRQ(ierr);
}
ierr = PetscViewerDestroy(&viewer);CHKERRQ(ierr);
PetscFunctionReturn(0);
}
PetscErrorCode TSTrajectorySet_Basic(TSTrajectory tj,TS ts,PetscInt stepnum,PetscReal time,Vec X)
{
PetscViewer viewer;
PetscInt ns,i;
Vec *Y;
char filename[PETSC_MAX_PATH_LEN];
PetscReal tprev;
PetscErrorCode ierr;
PetscFunctionBegin;
ierr = TSGetTotalSteps(ts,&stepnum);CHKERRQ(ierr);
if (stepnum == 0) {
PetscMPIInt rank;
ierr = MPI_Comm_rank(PetscObjectComm((PetscObject)ts),&rank);CHKERRQ(ierr);
if (!rank) {
ierr = PetscRMTree("SA-data");CHKERRQ(ierr);
ierr = PetscMkdir("SA-data");CHKERRQ(ierr);
}
ierr = PetscSNPrintf(filename,sizeof(filename),"SA-data/SA-%06d.bin",stepnum);CHKERRQ(ierr);
ierr = OutputBIN(filename,&viewer);CHKERRQ(ierr);
ierr = VecView(X,viewer);CHKERRQ(ierr);
ierr = PetscViewerBinaryWrite(viewer,&time,1,PETSC_REAL,PETSC_FALSE);CHKERRQ(ierr);
ierr = PetscViewerDestroy(&viewer);CHKERRQ(ierr);
PetscFunctionReturn(0);
}
ierr = PetscSNPrintf(filename,sizeof(filename),"SA-data/SA-%06d.bin",stepnum);CHKERRQ(ierr);
ierr = OutputBIN(filename,&viewer);CHKERRQ(ierr);
ierr = VecView(X,viewer);CHKERRQ(ierr);
ierr = PetscViewerBinaryWrite(viewer,&time,1,PETSC_REAL,PETSC_FALSE);CHKERRQ(ierr);
ierr = TSGetStages(ts,&ns,&Y);CHKERRQ(ierr);
for (i=0;i<ns;i++) {
ierr = VecView(Y[i],viewer);CHKERRQ(ierr);
}
ierr = TSGetPrevTime(ts,&tprev);CHKERRQ(ierr);
ierr = PetscViewerBinaryWrite(viewer,&tprev,1,PETSC_REAL,PETSC_FALSE);CHKERRQ(ierr);
ierr = PetscViewerDestroy(&viewer);CHKERRQ(ierr);
PetscFunctionReturn(0);
}
static PetscErrorCode MonitorUpdateQ(TS ts,PetscInt stepnum,PetscReal time,Vec X,void *ctx0)
{
PetscErrorCode ierr;
Vec C,*Y;
PetscInt Nr;
PetscReal h,theta;
Userctx *ctx=(Userctx*)ctx0;
PetscFunctionBegin;
theta = 0.5;
ierr = TSGetStages(ts,&Nr,&Y);CHKERRQ(ierr);
ierr = TSGetTimeStep(ts,&h);CHKERRQ(ierr);
ierr = VecDuplicate(ctx->vec_q,&C);CHKERRQ(ierr);
/* compute integrals */
if (stepnum>0) {
ierr = CostIntegrand(ts,time,X,C,ctx);CHKERRQ(ierr);
ierr = VecAXPY(ctx->vec_q,h*theta,C);CHKERRQ(ierr);
ierr = CostIntegrand(ts,time+h*theta,Y[0],C,ctx);CHKERRQ(ierr);
ierr = VecAXPY(ctx->vec_q,h*(1-theta),C);CHKERRQ(ierr);
}
ierr = VecDestroy(&C);CHKERRQ(ierr);
PetscFunctionReturn(0);
}