1c4762a1bSJed Brown static char help[] = "Test MatCreateRedundantMatrix for rectangular matrix.\n\ 2c4762a1bSJed Brown Contributed by Jose E. Roman, July 2017\n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscmat.h> 5d71ae5a4SJacob Faibussowitsch int main(int argc, char **args) 6d71ae5a4SJacob Faibussowitsch { 7c4762a1bSJed Brown Mat A, B; 8c4762a1bSJed Brown PetscInt m = 3, n = 4, i, nsubcomm; 9c4762a1bSJed Brown PetscMPIInt size, rank; 10c4762a1bSJed Brown 11327415f7SBarry Smith PetscFunctionBeginUser; 12*c8025a54SPierre Jolivet PetscCall(PetscInitialize(&argc, &args, NULL, help)); 139566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size)); 149566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank)); 15c4762a1bSJed Brown 16c4762a1bSJed Brown nsubcomm = size; 179566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-nsubcomm", &nsubcomm, NULL)); 18c4762a1bSJed Brown 199566063dSJacob Faibussowitsch PetscCall(MatCreate(PETSC_COMM_WORLD, &A)); 209566063dSJacob Faibussowitsch PetscCall(MatSetSizes(A, m, n, PETSC_DETERMINE, PETSC_DETERMINE)); 219566063dSJacob Faibussowitsch PetscCall(MatSetType(A, MATAIJ)); 229566063dSJacob Faibussowitsch PetscCall(MatSetFromOptions(A)); 239566063dSJacob Faibussowitsch PetscCall(MatSetUp(A)); 24c4762a1bSJed Brown 25dd400576SPatrick Sanan if (rank == 0) { 2648a46eb9SPierre Jolivet for (i = 0; i < size * PetscMin(m, n); i++) PetscCall(MatSetValue(A, i, i, 1.0, INSERT_VALUES)); 27c4762a1bSJed Brown } 289566063dSJacob Faibussowitsch PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY)); 299566063dSJacob Faibussowitsch PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY)); 309566063dSJacob Faibussowitsch PetscCall(MatView(A, PETSC_VIEWER_STDOUT_WORLD)); 31c4762a1bSJed Brown 329566063dSJacob Faibussowitsch PetscCall(MatCreateRedundantMatrix(A, nsubcomm, MPI_COMM_NULL, MAT_INITIAL_MATRIX, &B)); 33c4762a1bSJed Brown if (nsubcomm == size) { /* B is a sequential matrix */ 3448a46eb9SPierre Jolivet if (rank == 0) PetscCall(MatView(B, PETSC_VIEWER_STDOUT_SELF)); 35c4762a1bSJed Brown } else { 36c4762a1bSJed Brown MPI_Comm comm; 379566063dSJacob Faibussowitsch PetscCall(PetscObjectGetComm((PetscObject)B, &comm)); 389566063dSJacob Faibussowitsch PetscCall(MatView(B, PETSC_VIEWER_STDOUT_(comm))); 39c4762a1bSJed Brown } 40c4762a1bSJed Brown 419566063dSJacob Faibussowitsch PetscCall(MatDestroy(&A)); 429566063dSJacob Faibussowitsch PetscCall(MatDestroy(&B)); 439566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 44b122ec5aSJacob Faibussowitsch return 0; 45c4762a1bSJed Brown } 46c4762a1bSJed Brown 47c4762a1bSJed Brown /*TEST 48c4762a1bSJed Brown 49c4762a1bSJed Brown test: 50c4762a1bSJed Brown 51c4762a1bSJed Brown test: 52c4762a1bSJed Brown suffix: 2 53c4762a1bSJed Brown nsize: 3 54c4762a1bSJed Brown 55c4762a1bSJed Brown test: 56c4762a1bSJed Brown suffix: baij 57c4762a1bSJed Brown args: -mat_type baij 58c4762a1bSJed Brown 59c4762a1bSJed Brown test: 60c4762a1bSJed Brown suffix: baij_2 61c4762a1bSJed Brown nsize: 3 62c4762a1bSJed Brown args: -mat_type baij 63c4762a1bSJed Brown 64c4762a1bSJed Brown test: 65c4762a1bSJed Brown suffix: dense 66c4762a1bSJed Brown args: -mat_type dense 67c4762a1bSJed Brown 68c4762a1bSJed Brown test: 69c4762a1bSJed Brown suffix: dense_2 70c4762a1bSJed Brown nsize: 3 71c4762a1bSJed Brown args: -mat_type dense 72c4762a1bSJed Brown 73c4762a1bSJed Brown TEST*/ 74