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; 125f80ce2aSJacob Faibussowitsch CHKERRQ(VecDuplicate(gc1,&tmp)); 135f80ce2aSJacob Faibussowitsch CHKERRQ(VecWAXPY(tmp,-1.0,gc1,gc2)); 145f80ce2aSJacob Faibussowitsch CHKERRQ(VecNorm(tmp,NORM_INFINITY,&nrm)); 155f80ce2aSJacob Faibussowitsch CHKERRMPI(MPI_Allreduce(&nrm,&gnrm,1,MPIU_REAL,MPIU_MAX,PETSC_COMM_WORLD)); 165f80ce2aSJacob Faibussowitsch CHKERRQ(PetscPrintf(PETSC_COMM_WORLD,"norm of difference of ghosted coordinates %8.2e\n",gnrm)); 175f80ce2aSJacob Faibussowitsch CHKERRQ(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; 315f80ce2aSJacob Faibussowitsch CHKERRQ(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)); 325f80ce2aSJacob Faibussowitsch CHKERRQ(DMSetFromOptions(Q2_da)); 335f80ce2aSJacob Faibussowitsch CHKERRQ(DMSetUp(Q2_da)); 345f80ce2aSJacob Faibussowitsch CHKERRQ(DMDASetUniformCoordinates(Q2_da,-1.0,1.0,-2.0,2.0,-3.0,3.0)); 355f80ce2aSJacob Faibussowitsch CHKERRQ(DMGetCoordinates(Q2_da,&coords)); 365f80ce2aSJacob Faibussowitsch CHKERRQ(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)); 375f80ce2aSJacob Faibussowitsch CHKERRQ(DMSetFromOptions(Q1_da)); 385f80ce2aSJacob Faibussowitsch CHKERRQ(DMSetUp(Q1_da)); 395f80ce2aSJacob Faibussowitsch CHKERRQ(DMSetCoordinates(Q1_da,coords)); 40c4762a1bSJed Brown 41c4762a1bSJed Brown /* Get ghost coordinates one way */ 425f80ce2aSJacob Faibussowitsch CHKERRQ(DMGetCoordinatesLocal(Q1_da,&gcoords)); 43c4762a1bSJed Brown 44c4762a1bSJed Brown /* And another */ 455f80ce2aSJacob Faibussowitsch CHKERRQ(DMGetCoordinates(Q1_da,&coords)); 465f80ce2aSJacob Faibussowitsch CHKERRQ(DMGetCoordinateDM(Q1_da,&cda)); 475f80ce2aSJacob Faibussowitsch CHKERRQ(DMGetLocalVector(cda,&gcoords2)); 485f80ce2aSJacob Faibussowitsch CHKERRQ(DMGlobalToLocalBegin(cda,coords,INSERT_VALUES,gcoords2)); 495f80ce2aSJacob Faibussowitsch CHKERRQ(DMGlobalToLocalEnd(cda,coords,INSERT_VALUES,gcoords2)); 50c4762a1bSJed Brown 515f80ce2aSJacob Faibussowitsch CHKERRQ(CompareGhostedCoords(gcoords,gcoords2)); 525f80ce2aSJacob Faibussowitsch CHKERRQ(DMRestoreLocalVector(cda,&gcoords2)); 53c4762a1bSJed Brown 545f80ce2aSJacob Faibussowitsch CHKERRQ(VecScale(coords,10.0)); 555f80ce2aSJacob Faibussowitsch CHKERRQ(VecScale(gcoords,10.0)); 565f80ce2aSJacob Faibussowitsch CHKERRQ(DMGetCoordinatesLocal(Q1_da,&gcoords2)); 575f80ce2aSJacob Faibussowitsch CHKERRQ(CompareGhostedCoords(gcoords,gcoords2)); 58c4762a1bSJed Brown 595f80ce2aSJacob Faibussowitsch CHKERRQ(DMDestroy(&Q2_da)); 605f80ce2aSJacob Faibussowitsch CHKERRQ(DMDestroy(&Q1_da)); 61c4762a1bSJed Brown PetscFunctionReturn(0); 62c4762a1bSJed Brown } 63c4762a1bSJed Brown 64c4762a1bSJed Brown int main(int argc,char **argv) 65c4762a1bSJed Brown { 66c4762a1bSJed Brown 67*b122ec5aSJacob Faibussowitsch CHKERRQ(PetscInitialize(&argc,&argv,0,help)); 685f80ce2aSJacob Faibussowitsch CHKERRQ(TestQ2Q1DA()); 69*b122ec5aSJacob Faibussowitsch CHKERRQ(PetscFinalize()); 70*b122ec5aSJacob 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