1 static char help[] = "Test MatDuplicate() with new nonzeros on the duplicate\n\n"; 2 3 #include <petscmat.h> 4 int main(int argc, char **args) 5 { 6 Mat A, B, C; 7 PetscInt k; 8 const PetscInt M = 18, N = 18; 9 PetscBool equal; 10 PetscScalar *vals; 11 PetscMPIInt rank; 12 13 // clang-format off 14 // i0/j0[] has a dense diagonal 15 PetscInt i0[] = {7, 7, 8, 8, 9, 16, 17, 9, 10, 1, 1, -2, 2, 3, 3, 14, 4, 5, 10, 13, 9, 9, 10, 1, 0, 0, 5, 5, 6, 6, 13, 13, 14, -14, 4, 4, 5, 11, 11, 12, 15, 15, 16}; 16 PetscInt j0[] = {7, 6, 8, 4, 9, 16, 17, 16, 10, 2, 1, 3, 2, 4, 3, 14, 4, 5, 15, 13, 10, 16, 11, 2, 0, 1, 5, -11, 0, 6, 15, 17, 11, 13, 4, 8, 2, 11, 17, 12, 3, 15, 9}; 17 18 // i0/j0[] miss some diagonals 19 PetscInt i1[] = {8, 5, 15, 16, 6, 13, 4, 17, 8, 9, 9, 10, -6, 12, 7, 3, -4, 1, 1, 2, 5, 5, 6, 14, 17, 8, 9, 9, 10, 4, 5, 10, 11, 1, 2}; 20 PetscInt j1[] = {2, 3, 16, 9, 5, 17, 1, 13, 4, 10, 16, 11, -5, 12, 1, 7, -1, 2, 7, 3, 6, 11, 0, 11, 13, 4, 10, 16, 11, 8, -2, 15, 12, 7, 3}; 21 22 PetscInt i2[] = {3, 4, 1, 10, 0, 1, 1, 2, 1, 1, 2, 2, 3, 3, 4, 4, 1, 2, 5, 5, 6, 4, 17, 0, 1, 1, 8, 5, 5, 6, 4, 7, 8, 5}; 23 PetscInt j2[] = {7, 1, 2, 11, 5, 2, 7, 3, 2, 7, 3, 8, 4, 9, 3, 5, 7, 3, 6, 11, 0, 1, 13, 5, 2, 7, 4, 6, 11, 0, 1, 3, 4, 2}; 24 // clang-format on 25 26 typedef struct { 27 PetscInt *i, *j, n; 28 } coo_data; 29 30 coo_data coos[3] = { 31 {i0, j0, PETSC_STATIC_ARRAY_LENGTH(i0)}, 32 {i1, j1, PETSC_STATIC_ARRAY_LENGTH(i1)}, 33 {i2, j2, PETSC_STATIC_ARRAY_LENGTH(i2)} 34 }; 35 coo_data mycoo; 36 37 PetscFunctionBeginUser; 38 PetscCall(PetscInitialize(&argc, &args, NULL, help)); 39 PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank)); 40 41 mycoo = coos[rank / 3]; 42 43 PetscCall(MatCreate(PETSC_COMM_WORLD, &A)); 44 PetscCall(MatSetSizes(A, PETSC_DECIDE, PETSC_DECIDE, M, N)); 45 PetscCall(MatSetFromOptions(A)); 46 47 // Assemble matrix A with the full arrays 48 PetscCall(PetscMalloc1(mycoo.n, &vals)); 49 for (k = 0; k < mycoo.n; k++) { 50 vals[k] = mycoo.j[k]; 51 PetscCall(MatSetValue(A, mycoo.i[k], mycoo.j[k], vals[k], ADD_VALUES)); 52 } 53 PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY)); 54 PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY)); 55 56 // Assemble matrix B with the 1st half of the arrays 57 PetscCall(MatCreate(PETSC_COMM_WORLD, &B)); 58 PetscCall(MatSetSizes(B, PETSC_DECIDE, PETSC_DECIDE, M, N)); 59 PetscCall(MatSetFromOptions(B)); 60 for (k = 0; k < mycoo.n / 2; k++) PetscCall(MatSetValue(B, mycoo.i[k], mycoo.j[k], vals[k], ADD_VALUES)); 61 PetscCall(MatAssemblyBegin(B, MAT_FINAL_ASSEMBLY)); 62 PetscCall(MatAssemblyEnd(B, MAT_FINAL_ASSEMBLY)); 63 64 // Duplicate B to C and continue adding nozeros to C with the 2nd half 65 PetscCall(MatDuplicate(B, MAT_COPY_VALUES, &C)); 66 for (k = mycoo.n / 2; k < mycoo.n; k++) PetscCall(MatSetValue(C, mycoo.i[k], mycoo.j[k], vals[k], ADD_VALUES)); 67 PetscCall(MatAssemblyBegin(C, MAT_FINAL_ASSEMBLY)); 68 PetscCall(MatAssemblyEnd(C, MAT_FINAL_ASSEMBLY)); 69 70 // Test if A == C 71 PetscCall(MatMultEqual(A, C, 10, &equal)); 72 if (!equal) PetscCall(PetscPrintf(PETSC_COMM_WORLD, "MatDuplicate() on regular matrices failed\n")); 73 74 PetscCall(PetscFree(vals)); 75 PetscCall(MatDestroy(&A)); 76 PetscCall(MatDestroy(&B)); 77 PetscCall(MatDestroy(&C)); 78 PetscCall(PetscFinalize()); 79 return 0; 80 } 81 82 /*TEST 83 84 test: 85 nsize: 3 86 output_file: output/empty.out 87 88 TEST*/ 89