PetscErrorCode test1_DAInjection3d(PetscInt mx, PetscInt my, PetscInt mz) { PetscErrorCode ierr; DM dac,daf; PetscViewer vv; Vec ac,af; PetscInt periodicity; DMBoundaryType bx,by,bz; PetscFunctionBeginUser; bx = DM_BOUNDARY_NONE; by = DM_BOUNDARY_NONE; bz = DM_BOUNDARY_NONE; periodicity = 0; ierr = PetscOptionsGetInt(NULL,NULL,"-periodic", &periodicity, NULL);CHKERRQ(ierr); if (periodicity==1) { bx = DM_BOUNDARY_PERIODIC; } else if (periodicity==2) { by = DM_BOUNDARY_PERIODIC; } else if (periodicity==3) { bz = DM_BOUNDARY_PERIODIC; } ierr = DMDACreate3d(PETSC_COMM_WORLD, bx,by,bz, DMDA_STENCIL_BOX,mx+1, my+1,mz+1,PETSC_DECIDE, PETSC_DECIDE,PETSC_DECIDE,1, /* 1 dof */ 1, /* stencil = 1 */NULL,NULL,NULL,&daf);CHKERRQ(ierr); ierr = DMSetFromOptions(daf);CHKERRQ(ierr); ierr = DMSetUp(daf);CHKERRQ(ierr); ierr = DMCoarsen(daf,MPI_COMM_NULL,&dac);CHKERRQ(ierr); ierr = DMDASetUniformCoordinates(dac, -1.0,1.0, -1.0,1.0, -1.0,1.0);CHKERRQ(ierr); ierr = DMDASetUniformCoordinates(daf, -1.0,1.0, -1.0,1.0, -1.0,1.0);CHKERRQ(ierr); { DM cdaf,cdac; Vec coordsc,coordsf,coordsf2; Mat inject; VecScatter vscat; Mat interp; PetscReal norm; ierr = DMGetCoordinateDM(dac,&cdac);CHKERRQ(ierr); ierr = DMGetCoordinateDM(daf,&cdaf);CHKERRQ(ierr); ierr = DMGetCoordinates(dac,&coordsc);CHKERRQ(ierr); ierr = DMGetCoordinates(daf,&coordsf);CHKERRQ(ierr); ierr = DMCreateInjection(cdac,cdaf,&inject);CHKERRQ(ierr); ierr = MatScatterGetVecScatter(inject,&vscat);CHKERRQ(ierr); ierr = VecScatterBegin(vscat,coordsf,coordsc,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); ierr = VecScatterEnd(vscat ,coordsf,coordsc,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); ierr = MatDestroy(&inject);CHKERRQ(ierr); ierr = DMCreateInterpolation(cdac,cdaf,&interp,NULL);CHKERRQ(ierr); ierr = VecDuplicate(coordsf,&coordsf2);CHKERRQ(ierr); ierr = MatInterpolate(interp,coordsc,coordsf2);CHKERRQ(ierr); ierr = VecAXPY(coordsf2,-1.0,coordsf);CHKERRQ(ierr); ierr = VecNorm(coordsf2,NORM_MAX,&norm);CHKERRQ(ierr); /* The fine coordinates are only reproduced in certain cases */ if (!bx && !by && !bz && norm > PETSC_SQRT_MACHINE_EPSILON) {ierr = PetscPrintf(PETSC_COMM_WORLD,"Norm %g\n",(double)norm);CHKERRQ(ierr);} ierr = VecDestroy(&coordsf2);CHKERRQ(ierr); ierr = MatDestroy(&interp);CHKERRQ(ierr); } if (0) { ierr = DMCreateGlobalVector(dac,&ac);CHKERRQ(ierr); ierr = VecZeroEntries(ac);CHKERRQ(ierr); ierr = DMCreateGlobalVector(daf,&af);CHKERRQ(ierr); ierr = VecZeroEntries(af);CHKERRQ(ierr); ierr = PetscViewerASCIIOpen(PETSC_COMM_WORLD, "dac_7.vtk", &vv);CHKERRQ(ierr); ierr = PetscViewerPushFormat(vv, PETSC_VIEWER_ASCII_VTK);CHKERRQ(ierr); ierr = DMView(dac, vv);CHKERRQ(ierr); ierr = VecView(ac, vv);CHKERRQ(ierr); ierr = PetscViewerPopFormat(vv);CHKERRQ(ierr); ierr = PetscViewerDestroy(&vv);CHKERRQ(ierr); ierr = PetscViewerASCIIOpen(PETSC_COMM_WORLD, "daf_7.vtk", &vv);CHKERRQ(ierr); ierr = PetscViewerPushFormat(vv, PETSC_VIEWER_ASCII_VTK);CHKERRQ(ierr); ierr = DMView(daf, vv);CHKERRQ(ierr); ierr = VecView(af, vv);CHKERRQ(ierr); ierr = PetscViewerPopFormat(vv);CHKERRQ(ierr); ierr = PetscViewerDestroy(&vv);CHKERRQ(ierr); ierr = VecDestroy(&ac);CHKERRQ(ierr); ierr = VecDestroy(&af);CHKERRQ(ierr); } ierr = DMDestroy(&dac);CHKERRQ(ierr); ierr = DMDestroy(&daf);CHKERRQ(ierr); PetscFunctionReturn(0); }
PETSC_EXTERN void PETSC_STDCALL matscattergetvecscatter_(Mat mat,VecScatter *scatter, int *__ierr ){ *__ierr = MatScatterGetVecScatter( (Mat)PetscToPointer((mat) ),scatter); }