Actual source code: ex52.c
2: static char help[] = "Tests various routines in MatMPIBAIJ format.\n";
4: #include <petscmat.h>
6: int main(int argc, char **args)
7: {
8: Mat A;
9: PetscInt m = 2, bs = 1, M, row, col, start, end, i, j, k;
10: PetscMPIInt rank, size;
11: PetscScalar data = 100;
12: PetscBool flg;
14: PetscFunctionBeginUser;
15: PetscCall(PetscInitialize(&argc, &args, (char *)0, help));
16: PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank));
17: PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size));
19: /* Test MatSetValues() and MatGetValues() */
20: PetscCall(PetscOptionsGetInt(NULL, NULL, "-mat_block_size", &bs, NULL));
21: PetscCall(PetscOptionsGetInt(NULL, NULL, "-mat_size", &m, NULL));
23: M = m * bs * size;
24: PetscCall(MatCreateBAIJ(PETSC_COMM_WORLD, bs, PETSC_DECIDE, PETSC_DECIDE, M, M, PETSC_DECIDE, NULL, PETSC_DECIDE, NULL, &A));
26: PetscCall(MatGetOwnershipRange(A, &start, &end));
27: PetscCall(PetscOptionsHasName(NULL, NULL, "-column_oriented", &flg));
28: if (flg) PetscCall(MatSetOption(A, MAT_ROW_ORIENTED, PETSC_FALSE));
30: /* inproc assembly */
31: for (row = start; row < end; row++) {
32: for (col = start; col < end; col++, data += 1) PetscCall(MatSetValues(A, 1, &row, 1, &col, &data, INSERT_VALUES));
33: }
34: PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY));
35: PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY));
37: /* offproc assembly */
38: data = 5.0;
39: row = (M + start - 1) % M;
40: for (col = 0; col < M; col++) PetscCall(MatSetValues(A, 1, &row, 1, &col, &data, ADD_VALUES));
41: PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY));
42: PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY));
44: /* Test MatSetValuesBlocked() */
45: PetscCall(PetscOptionsHasName(NULL, NULL, "-test_setvaluesblocked", &flg));
46: if (flg) {
47: PetscScalar *bval;
48: row /= bs;
49: col = start / bs;
50: PetscCall(PetscMalloc1(bs * bs, &bval));
51: k = 1;
52: /* row oriented - default */
53: for (i = 0; i < bs; i++) {
54: for (j = 0; j < bs; j++) {
55: bval[i * bs + j] = (PetscScalar)k;
56: k++;
57: }
58: }
59: PetscCall(MatSetValuesBlocked(A, 1, &row, 1, &col, bval, INSERT_VALUES));
60: PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY));
61: PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY));
62: PetscCall(PetscFree(bval));
63: }
65: PetscCall(MatView(A, PETSC_VIEWER_STDOUT_WORLD));
66: PetscCall(MatDestroy(&A));
67: PetscCall(PetscFinalize());
68: return 0;
69: }
71: /*TEST
73: test:
74: suffix: 1
75: nsize: 3
76: args: -mat_block_size 2 -test_setvaluesblocked
78: test:
79: suffix: 2
80: nsize: 3
81: args: -mat_block_size 2 -test_setvaluesblocked -column_oriented
83: test:
84: suffix: 3
85: nsize: 3
86: args: -mat_block_size 1 -test_setvaluesblocked
88: test:
89: suffix: 4
90: nsize: 3
91: args: -mat_block_size 1 -test_setvaluesblocked -column_oriented
93: TEST*/