1 static char help[] = "Test MatCreateRedundantMatrix for a BAIJ matrix.\n\ 2 Contributed by Lawrence Mitchell, Feb. 21, 2017\n\n"; 3 4 #include <petscmat.h> 5 int main(int argc, char **args) 6 { 7 Mat A, B; 8 Vec diag; 9 PetscMPIInt size, rank; 10 11 PetscFunctionBeginUser; 12 PetscCall(PetscInitialize(&argc, &args, (char *)0, help)); 13 PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size)); 14 PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank)); 15 16 PetscCall(MatCreate(PETSC_COMM_WORLD, &A)); 17 PetscCall(MatSetSizes(A, 2, 2, PETSC_DETERMINE, PETSC_DETERMINE)); 18 PetscCall(MatSetBlockSize(A, 2)); 19 PetscCall(MatSetType(A, MATBAIJ)); 20 PetscCall(MatSetUp(A)); 21 22 PetscCall(MatCreateVecs(A, &diag, NULL)); 23 PetscCall(VecSet(diag, 1.0)); 24 PetscCall(MatDiagonalSet(A, diag, INSERT_VALUES)); 25 PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY)); 26 PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY)); 27 PetscCall(MatView(A, PETSC_VIEWER_STDOUT_WORLD)); 28 29 PetscCall(MatCreateRedundantMatrix(A, size, MPI_COMM_NULL, MAT_INITIAL_MATRIX, &B)); 30 if (rank == 0) PetscCall(MatView(B, PETSC_VIEWER_STDOUT_SELF)); 31 32 PetscCall(MatDestroy(&A)); 33 PetscCall(MatDestroy(&B)); 34 PetscCall(VecDestroy(&diag)); 35 PetscCall(PetscFinalize()); 36 return 0; 37 } 38 39 /*TEST 40 41 test: 42 43 test: 44 suffix: 2 45 nsize: 3 46 47 TEST*/ 48