1c4762a1bSJed Brown static char help[] = "Tests DMDAVecGetArrayDOF()\n"; 2c4762a1bSJed Brown #include <petscdm.h> 3c4762a1bSJed Brown #include <petscdmda.h> 4c4762a1bSJed Brown 5c4762a1bSJed Brown int main(int argc, char *argv[]) 6c4762a1bSJed Brown { 7c4762a1bSJed Brown DM da, daX, daY; 8c4762a1bSJed Brown DMDALocalInfo info; 9c4762a1bSJed Brown MPI_Comm commX, commY; 10c4762a1bSJed Brown Vec basisX, basisY; 11c4762a1bSJed Brown PetscScalar **arrayX, **arrayY; 12c4762a1bSJed Brown const PetscInt *lx, *ly; 13c4762a1bSJed Brown PetscInt M = 3, N = 3; 14c4762a1bSJed Brown PetscInt p = 1; 15c4762a1bSJed Brown PetscInt numGP = 3; 16c4762a1bSJed Brown PetscInt dof = 2*(p+1)*numGP; 17c4762a1bSJed Brown PetscMPIInt rank, subsize, subrank; 18c4762a1bSJed Brown 19*9566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc,&argv,0,help)); 20*9566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank)); 21c4762a1bSJed Brown /* Create 2D DMDA */ 22*9566063dSJacob Faibussowitsch PetscCall(DMDACreate2d(PETSC_COMM_WORLD,DM_BOUNDARY_NONE,DM_BOUNDARY_NONE,DMDA_STENCIL_STAR,M,N,PETSC_DECIDE,PETSC_DECIDE,1,1,NULL,NULL,&da)); 23*9566063dSJacob Faibussowitsch PetscCall(DMSetFromOptions(da)); 24*9566063dSJacob Faibussowitsch PetscCall(DMSetUp(da)); 25c4762a1bSJed Brown /* Create 1D DMDAs along two directions. */ 26*9566063dSJacob Faibussowitsch PetscCall(DMDAGetOwnershipRanges(da, &lx, &ly, NULL)); 27*9566063dSJacob Faibussowitsch PetscCall(DMDAGetLocalInfo(da, &info)); 28c4762a1bSJed Brown /* Partitioning in the X direction makes a subcomm extending in the Y direction and vice-versa. */ 29*9566063dSJacob Faibussowitsch PetscCall(DMDAGetProcessorSubsets(da, DM_X, &commY)); 30*9566063dSJacob Faibussowitsch PetscCall(DMDAGetProcessorSubsets(da, DM_Y, &commX)); 31*9566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_size(commX, &subsize)); 32*9566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_rank(commX, &subrank)); 33*9566063dSJacob Faibussowitsch PetscCall(PetscSynchronizedPrintf(PETSC_COMM_WORLD, "[%d]X subrank: %d subsize: %d\n", rank, subrank, subsize)); 34*9566063dSJacob Faibussowitsch PetscCall(PetscSynchronizedFlush(PETSC_COMM_WORLD,PETSC_STDOUT)); 35*9566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_size(commY, &subsize)); 36*9566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_rank(commY, &subrank)); 37*9566063dSJacob Faibussowitsch PetscCall(PetscSynchronizedPrintf(PETSC_COMM_WORLD, "[%d]Y subrank: %d subsize: %d\n", rank, subrank, subsize)); 38*9566063dSJacob Faibussowitsch PetscCall(PetscSynchronizedFlush(PETSC_COMM_WORLD,PETSC_STDOUT)); 39*9566063dSJacob Faibussowitsch PetscCall(DMDACreate1d(commX, DM_BOUNDARY_NONE, info.mx, dof, 1, lx, &daX)); 40*9566063dSJacob Faibussowitsch PetscCall(DMSetUp(daX)); 41*9566063dSJacob Faibussowitsch PetscCall(DMDACreate1d(commY, DM_BOUNDARY_NONE, info.my, dof, 1, ly, &daY)); 42*9566063dSJacob Faibussowitsch PetscCall(DMSetUp(daY)); 43c4762a1bSJed Brown /* Create 1D vectors for basis functions */ 44*9566063dSJacob Faibussowitsch PetscCall(DMGetGlobalVector(daX, &basisX)); 45*9566063dSJacob Faibussowitsch PetscCall(DMGetGlobalVector(daY, &basisY)); 46c4762a1bSJed Brown /* Extract basis functions */ 47*9566063dSJacob Faibussowitsch PetscCall(DMDAVecGetArrayDOF(daX, basisX, &arrayX)); 48*9566063dSJacob Faibussowitsch PetscCall(DMDAVecGetArrayDOF(daY, basisY, &arrayY)); 49c4762a1bSJed Brown /*arrayX[i][ndof]; */ 50c4762a1bSJed Brown /*arrayY[j][ndof]; */ 51*9566063dSJacob Faibussowitsch PetscCall(DMDAVecRestoreArrayDOF(daX, basisX, &arrayX)); 52*9566063dSJacob Faibussowitsch PetscCall(DMDAVecRestoreArrayDOF(daY, basisY, &arrayY)); 53c4762a1bSJed Brown /* Return basis vectors */ 54*9566063dSJacob Faibussowitsch PetscCall(DMRestoreGlobalVector(daX, &basisX)); 55*9566063dSJacob Faibussowitsch PetscCall(DMRestoreGlobalVector(daY, &basisY)); 56c4762a1bSJed Brown /* Cleanup */ 57*9566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_free(&commX)); 58*9566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_free(&commY)); 59*9566063dSJacob Faibussowitsch PetscCall(DMDestroy(&daX)); 60*9566063dSJacob Faibussowitsch PetscCall(DMDestroy(&daY)); 61*9566063dSJacob Faibussowitsch PetscCall(DMDestroy(&da)); 62*9566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 63b122ec5aSJacob Faibussowitsch return 0; 64c4762a1bSJed Brown } 65c4762a1bSJed Brown 66c4762a1bSJed Brown /*TEST 67c4762a1bSJed Brown 68c4762a1bSJed Brown test: 69c4762a1bSJed Brown nsize: 2 70c4762a1bSJed Brown 71c4762a1bSJed Brown TEST*/ 72