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*327415f7SBarry Smith PetscFunctionBeginUser; 209566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc,&argv,0,help)); 219566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank)); 22c4762a1bSJed Brown /* Create 2D DMDA */ 239566063dSJacob 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)); 249566063dSJacob Faibussowitsch PetscCall(DMSetFromOptions(da)); 259566063dSJacob Faibussowitsch PetscCall(DMSetUp(da)); 26c4762a1bSJed Brown /* Create 1D DMDAs along two directions. */ 279566063dSJacob Faibussowitsch PetscCall(DMDAGetOwnershipRanges(da, &lx, &ly, NULL)); 289566063dSJacob Faibussowitsch PetscCall(DMDAGetLocalInfo(da, &info)); 29c4762a1bSJed Brown /* Partitioning in the X direction makes a subcomm extending in the Y direction and vice-versa. */ 309566063dSJacob Faibussowitsch PetscCall(DMDAGetProcessorSubsets(da, DM_X, &commY)); 319566063dSJacob Faibussowitsch PetscCall(DMDAGetProcessorSubsets(da, DM_Y, &commX)); 329566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_size(commX, &subsize)); 339566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_rank(commX, &subrank)); 349566063dSJacob Faibussowitsch PetscCall(PetscSynchronizedPrintf(PETSC_COMM_WORLD, "[%d]X subrank: %d subsize: %d\n", rank, subrank, subsize)); 359566063dSJacob Faibussowitsch PetscCall(PetscSynchronizedFlush(PETSC_COMM_WORLD,PETSC_STDOUT)); 369566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_size(commY, &subsize)); 379566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_rank(commY, &subrank)); 389566063dSJacob Faibussowitsch PetscCall(PetscSynchronizedPrintf(PETSC_COMM_WORLD, "[%d]Y subrank: %d subsize: %d\n", rank, subrank, subsize)); 399566063dSJacob Faibussowitsch PetscCall(PetscSynchronizedFlush(PETSC_COMM_WORLD,PETSC_STDOUT)); 409566063dSJacob Faibussowitsch PetscCall(DMDACreate1d(commX, DM_BOUNDARY_NONE, info.mx, dof, 1, lx, &daX)); 419566063dSJacob Faibussowitsch PetscCall(DMSetUp(daX)); 429566063dSJacob Faibussowitsch PetscCall(DMDACreate1d(commY, DM_BOUNDARY_NONE, info.my, dof, 1, ly, &daY)); 439566063dSJacob Faibussowitsch PetscCall(DMSetUp(daY)); 44c4762a1bSJed Brown /* Create 1D vectors for basis functions */ 459566063dSJacob Faibussowitsch PetscCall(DMGetGlobalVector(daX, &basisX)); 469566063dSJacob Faibussowitsch PetscCall(DMGetGlobalVector(daY, &basisY)); 47c4762a1bSJed Brown /* Extract basis functions */ 489566063dSJacob Faibussowitsch PetscCall(DMDAVecGetArrayDOF(daX, basisX, &arrayX)); 499566063dSJacob Faibussowitsch PetscCall(DMDAVecGetArrayDOF(daY, basisY, &arrayY)); 50c4762a1bSJed Brown /*arrayX[i][ndof]; */ 51c4762a1bSJed Brown /*arrayY[j][ndof]; */ 529566063dSJacob Faibussowitsch PetscCall(DMDAVecRestoreArrayDOF(daX, basisX, &arrayX)); 539566063dSJacob Faibussowitsch PetscCall(DMDAVecRestoreArrayDOF(daY, basisY, &arrayY)); 54c4762a1bSJed Brown /* Return basis vectors */ 559566063dSJacob Faibussowitsch PetscCall(DMRestoreGlobalVector(daX, &basisX)); 569566063dSJacob Faibussowitsch PetscCall(DMRestoreGlobalVector(daY, &basisY)); 57c4762a1bSJed Brown /* Cleanup */ 589566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_free(&commX)); 599566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_free(&commY)); 609566063dSJacob Faibussowitsch PetscCall(DMDestroy(&daX)); 619566063dSJacob Faibussowitsch PetscCall(DMDestroy(&daY)); 629566063dSJacob Faibussowitsch PetscCall(DMDestroy(&da)); 639566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 64b122ec5aSJacob Faibussowitsch return 0; 65c4762a1bSJed Brown } 66c4762a1bSJed Brown 67c4762a1bSJed Brown /*TEST 68c4762a1bSJed Brown 69c4762a1bSJed Brown test: 70c4762a1bSJed Brown nsize: 2 71c4762a1bSJed Brown 72c4762a1bSJed Brown TEST*/ 73