1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Tests various DM routines.\n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscdm.h> 5c4762a1bSJed Brown #include <petscdmda.h> 6c4762a1bSJed Brown 7c4762a1bSJed Brown int main(int argc,char **argv) 8c4762a1bSJed Brown { 9c4762a1bSJed Brown PetscMPIInt rank; 10c4762a1bSJed Brown PetscInt M = 10,N = 8,m = PETSC_DECIDE,n = PETSC_DECIDE; 11c4762a1bSJed Brown DM da; 12c4762a1bSJed Brown PetscViewer viewer; 13c4762a1bSJed Brown Vec local,global; 14c4762a1bSJed Brown PetscScalar value; 15c4762a1bSJed Brown 16*9566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc,&argv,(char*)0,help)); 17*9566063dSJacob Faibussowitsch PetscCall(PetscViewerDrawOpen(PETSC_COMM_WORLD,0,"",300,0,300,300,&viewer)); 18c4762a1bSJed Brown 19c4762a1bSJed Brown /* Read options */ 20*9566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-M",&M,NULL)); 21*9566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-N",&N,NULL)); 22*9566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-m",&m,NULL)); 23*9566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL)); 24c4762a1bSJed Brown 25c4762a1bSJed Brown /* Create distributed array and get vectors */ 26*9566063dSJacob Faibussowitsch PetscCall(DMDACreate2d(PETSC_COMM_WORLD, DM_BOUNDARY_NONE, DM_BOUNDARY_NONE,DMDA_STENCIL_BOX,M,N,m,n,1,1,NULL,NULL,&da)); 27*9566063dSJacob Faibussowitsch PetscCall(DMSetFromOptions(da)); 28*9566063dSJacob Faibussowitsch PetscCall(DMSetUp(da)); 29*9566063dSJacob Faibussowitsch PetscCall(DMCreateGlobalVector(da,&global)); 30*9566063dSJacob Faibussowitsch PetscCall(DMCreateLocalVector(da,&local)); 31c4762a1bSJed Brown 32c4762a1bSJed Brown value = -3.0; 33*9566063dSJacob Faibussowitsch PetscCall(VecSet(global,value)); 34*9566063dSJacob Faibussowitsch PetscCall(DMGlobalToLocalBegin(da,global,INSERT_VALUES,local)); 35*9566063dSJacob Faibussowitsch PetscCall(DMGlobalToLocalEnd(da,global,INSERT_VALUES,local)); 36c4762a1bSJed Brown 37*9566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 38c4762a1bSJed Brown value = rank+1; 39*9566063dSJacob Faibussowitsch PetscCall(VecScale(local,value)); 40*9566063dSJacob Faibussowitsch PetscCall(DMLocalToGlobalBegin(da,local,ADD_VALUES,global)); 41*9566063dSJacob Faibussowitsch PetscCall(DMLocalToGlobalEnd(da,local,ADD_VALUES,global)); 42c4762a1bSJed Brown 43*9566063dSJacob Faibussowitsch PetscCall(VecView(global,PETSC_VIEWER_STDOUT_WORLD)); 44*9566063dSJacob Faibussowitsch PetscCall(DMView(da,viewer)); 45c4762a1bSJed Brown 46c4762a1bSJed Brown /* Free memory */ 47*9566063dSJacob Faibussowitsch PetscCall(PetscViewerDestroy(&viewer)); 48*9566063dSJacob Faibussowitsch PetscCall(VecDestroy(&local)); 49*9566063dSJacob Faibussowitsch PetscCall(VecDestroy(&global)); 50*9566063dSJacob Faibussowitsch PetscCall(DMDestroy(&da)); 51*9566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 52b122ec5aSJacob Faibussowitsch return 0; 53c4762a1bSJed Brown } 54c4762a1bSJed Brown 55c4762a1bSJed Brown /*TEST 56c4762a1bSJed Brown 57c4762a1bSJed Brown test: 58c4762a1bSJed Brown nsize: 2 59c4762a1bSJed Brown args: -nox 60c4762a1bSJed Brown filter: grep -v -i Object 61c4762a1bSJed Brown 62c4762a1bSJed Brown test: 63c4762a1bSJed Brown suffix: cuda1 64c4762a1bSJed Brown requires: cuda 65c4762a1bSJed Brown args: -dm_vec_type cuda -nox 66c4762a1bSJed Brown filter: grep -v -i Object 67c4762a1bSJed Brown 68c4762a1bSJed Brown test: 69c4762a1bSJed Brown suffix: cuda2 70c4762a1bSJed Brown nsize: 2 71c4762a1bSJed Brown requires: cuda 72c4762a1bSJed Brown args: -dm_vec_type cuda -nox 73c4762a1bSJed Brown filter: grep -v -i Object 74c4762a1bSJed Brown 75c4762a1bSJed Brown TEST*/ 76