1c4762a1bSJed Brown static char help[] = "Tests DMDA ghost coordinates\n\n"; 2c4762a1bSJed Brown 3c4762a1bSJed Brown #include <petscdm.h> 4c4762a1bSJed Brown #include <petscdmda.h> 5c4762a1bSJed Brown 6c4762a1bSJed Brown static PetscErrorCode CompareGhostedCoords(Vec gc1,Vec gc2) 7c4762a1bSJed Brown { 8c4762a1bSJed Brown PetscReal nrm,gnrm; 9c4762a1bSJed Brown Vec tmp; 10c4762a1bSJed Brown 11c4762a1bSJed Brown PetscFunctionBeginUser; 12*9566063dSJacob Faibussowitsch PetscCall(VecDuplicate(gc1,&tmp)); 13*9566063dSJacob Faibussowitsch PetscCall(VecWAXPY(tmp,-1.0,gc1,gc2)); 14*9566063dSJacob Faibussowitsch PetscCall(VecNorm(tmp,NORM_INFINITY,&nrm)); 15*9566063dSJacob Faibussowitsch PetscCallMPI(MPI_Allreduce(&nrm,&gnrm,1,MPIU_REAL,MPIU_MAX,PETSC_COMM_WORLD)); 16*9566063dSJacob Faibussowitsch PetscCall(PetscPrintf(PETSC_COMM_WORLD,"norm of difference of ghosted coordinates %8.2e\n",gnrm)); 17*9566063dSJacob Faibussowitsch PetscCall(VecDestroy(&tmp)); 18c4762a1bSJed Brown PetscFunctionReturn(0); 19c4762a1bSJed Brown } 20c4762a1bSJed Brown 21c4762a1bSJed Brown static PetscErrorCode TestQ2Q1DA(void) 22c4762a1bSJed Brown { 23c4762a1bSJed Brown DM Q2_da,Q1_da,cda; 24c4762a1bSJed Brown PetscInt mx,my,mz; 25c4762a1bSJed Brown Vec coords,gcoords,gcoords2; 26c4762a1bSJed Brown 27362febeeSStefano Zampini PetscFunctionBeginUser; 28c4762a1bSJed Brown mx = 7; 29c4762a1bSJed Brown my = 11; 30c4762a1bSJed Brown mz = 13; 31*9566063dSJacob Faibussowitsch PetscCall(DMDACreate3d(PETSC_COMM_WORLD,DM_BOUNDARY_NONE,DM_BOUNDARY_NONE,DM_BOUNDARY_NONE,DMDA_STENCIL_BOX,mx,my,mz,PETSC_DECIDE,PETSC_DECIDE,PETSC_DECIDE,3,2,0,0,0,&Q2_da)); 32*9566063dSJacob Faibussowitsch PetscCall(DMSetFromOptions(Q2_da)); 33*9566063dSJacob Faibussowitsch PetscCall(DMSetUp(Q2_da)); 34*9566063dSJacob Faibussowitsch PetscCall(DMDASetUniformCoordinates(Q2_da,-1.0,1.0,-2.0,2.0,-3.0,3.0)); 35*9566063dSJacob Faibussowitsch PetscCall(DMGetCoordinates(Q2_da,&coords)); 36*9566063dSJacob Faibussowitsch PetscCall(DMDACreate3d(PETSC_COMM_WORLD,DM_BOUNDARY_NONE,DM_BOUNDARY_NONE,DM_BOUNDARY_NONE,DMDA_STENCIL_BOX,mx,my,mz,PETSC_DECIDE,PETSC_DECIDE,PETSC_DECIDE,3,1,0,0,0,&Q1_da)); 37*9566063dSJacob Faibussowitsch PetscCall(DMSetFromOptions(Q1_da)); 38*9566063dSJacob Faibussowitsch PetscCall(DMSetUp(Q1_da)); 39*9566063dSJacob Faibussowitsch PetscCall(DMSetCoordinates(Q1_da,coords)); 40c4762a1bSJed Brown 41c4762a1bSJed Brown /* Get ghost coordinates one way */ 42*9566063dSJacob Faibussowitsch PetscCall(DMGetCoordinatesLocal(Q1_da,&gcoords)); 43c4762a1bSJed Brown 44c4762a1bSJed Brown /* And another */ 45*9566063dSJacob Faibussowitsch PetscCall(DMGetCoordinates(Q1_da,&coords)); 46*9566063dSJacob Faibussowitsch PetscCall(DMGetCoordinateDM(Q1_da,&cda)); 47*9566063dSJacob Faibussowitsch PetscCall(DMGetLocalVector(cda,&gcoords2)); 48*9566063dSJacob Faibussowitsch PetscCall(DMGlobalToLocalBegin(cda,coords,INSERT_VALUES,gcoords2)); 49*9566063dSJacob Faibussowitsch PetscCall(DMGlobalToLocalEnd(cda,coords,INSERT_VALUES,gcoords2)); 50c4762a1bSJed Brown 51*9566063dSJacob Faibussowitsch PetscCall(CompareGhostedCoords(gcoords,gcoords2)); 52*9566063dSJacob Faibussowitsch PetscCall(DMRestoreLocalVector(cda,&gcoords2)); 53c4762a1bSJed Brown 54*9566063dSJacob Faibussowitsch PetscCall(VecScale(coords,10.0)); 55*9566063dSJacob Faibussowitsch PetscCall(VecScale(gcoords,10.0)); 56*9566063dSJacob Faibussowitsch PetscCall(DMGetCoordinatesLocal(Q1_da,&gcoords2)); 57*9566063dSJacob Faibussowitsch PetscCall(CompareGhostedCoords(gcoords,gcoords2)); 58c4762a1bSJed Brown 59*9566063dSJacob Faibussowitsch PetscCall(DMDestroy(&Q2_da)); 60*9566063dSJacob Faibussowitsch PetscCall(DMDestroy(&Q1_da)); 61c4762a1bSJed Brown PetscFunctionReturn(0); 62c4762a1bSJed Brown } 63c4762a1bSJed Brown 64c4762a1bSJed Brown int main(int argc,char **argv) 65c4762a1bSJed Brown { 66c4762a1bSJed Brown 67*9566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc,&argv,0,help)); 68*9566063dSJacob Faibussowitsch PetscCall(TestQ2Q1DA()); 69*9566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 70b122ec5aSJacob Faibussowitsch return 0; 71c4762a1bSJed Brown } 72c4762a1bSJed Brown 73c4762a1bSJed Brown /*TEST 74c4762a1bSJed Brown 75c4762a1bSJed Brown test: 76c4762a1bSJed Brown nsize: 2 77c4762a1bSJed Brown 78c4762a1bSJed Brown TEST*/ 79