1 static char help[] = "Test MatDuplicate() with new nonzeros on the duplicate\n\n";
2
3 #include <petscmat.h>
main(int argc,char ** args)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