Actual source code: ex177.c
2: static char help[] = "Tests various routines in MatKAIJ format.\n";
4: #include <petscmat.h>
5: #define IMAX 15
7: int main(int argc, char **args)
8: {
9: Mat A, B, TA;
10: PetscScalar *S, *T;
11: PetscViewer fd;
12: char file[PETSC_MAX_PATH_LEN];
13: PetscInt m, n, M, N, p = 1, q = 1, i, j;
14: PetscMPIInt rank, size;
15: PetscBool flg;
18: PetscInitialize(&argc, &args, (char *)0, help);
19: MPI_Comm_rank(PETSC_COMM_WORLD, &rank);
20: MPI_Comm_size(PETSC_COMM_WORLD, &size);
22: /* Load AIJ matrix A */
23: PetscOptionsGetString(NULL, NULL, "-f", file, sizeof(file), &flg);
25: PetscViewerBinaryOpen(PETSC_COMM_WORLD, file, FILE_MODE_READ, &fd);
26: MatCreate(PETSC_COMM_WORLD, &A);
27: MatLoad(A, fd);
28: PetscViewerDestroy(&fd);
30: /* Get dof, then create S and T */
31: PetscOptionsGetInt(NULL, NULL, "-p", &p, NULL);
32: PetscOptionsGetInt(NULL, NULL, "-q", &q, NULL);
33: PetscMalloc2(p * q, &S, p * q, &T);
34: for (i = 0; i < p * q; i++) S[i] = 0;
36: for (i = 0; i < p; i++) {
37: for (j = 0; j < q; j++) {
38: /* Set some random non-zero values */
39: S[i + p * j] = ((PetscReal)((i + 1) * (j + 1))) / ((PetscReal)(p + q));
40: T[i + p * j] = ((PetscReal)((p - i) + j)) / ((PetscReal)(p * q));
41: }
42: }
44: /* Test KAIJ when both S & T are not NULL */
46: /* Create KAIJ matrix TA */
47: MatCreateKAIJ(A, p, q, S, T, &TA);
48: MatGetLocalSize(A, &m, &n);
49: MatGetSize(A, &M, &N);
51: MatConvert(TA, MATAIJ, MAT_INITIAL_MATRIX, &B);
53: /* Test MatKAIJGetScaledIdentity() */
54: MatKAIJGetScaledIdentity(TA, &flg);
56: /* Test MatMult() */
57: MatMultEqual(TA, B, 10, &flg);
59: /* Test MatMultAdd() */
60: MatMultAddEqual(TA, B, 10, &flg);
63: MatDestroy(&TA);
64: MatDestroy(&B);
66: /* Test KAIJ when S is NULL */
68: /* Create KAIJ matrix TA */
69: MatCreateKAIJ(A, p, q, NULL, T, &TA);
70: MatGetLocalSize(A, &m, &n);
71: MatGetSize(A, &M, &N);
73: MatConvert(TA, MATAIJ, MAT_INITIAL_MATRIX, &B);
75: /* Test MatKAIJGetScaledIdentity() */
76: MatKAIJGetScaledIdentity(TA, &flg);
78: /* Test MatMult() */
79: MatMultEqual(TA, B, 10, &flg);
81: /* Test MatMultAdd() */
82: MatMultAddEqual(TA, B, 10, &flg);
85: MatDestroy(&TA);
86: MatDestroy(&B);
88: /* Test KAIJ when T is NULL */
90: /* Create KAIJ matrix TA */
91: MatCreateKAIJ(A, p, q, S, NULL, &TA);
92: MatGetLocalSize(A, &m, &n);
93: MatGetSize(A, &M, &N);
95: MatConvert(TA, MATAIJ, MAT_INITIAL_MATRIX, &B);
97: /* Test MatKAIJGetScaledIdentity() */
98: MatKAIJGetScaledIdentity(TA, &flg);
100: /* Test MatMult() */
101: MatMultEqual(TA, B, 10, &flg);
103: /* Test MatMultAdd() */
104: MatMultAddEqual(TA, B, 10, &flg);
107: MatDestroy(&TA);
108: MatDestroy(&B);
110: /* Test KAIJ when T is is an identity matrix */
112: if (p == q) {
113: for (i = 0; i < p; i++) {
114: for (j = 0; j < q; j++) {
115: if (i == j) T[i + j * p] = 1.0;
116: else T[i + j * p] = 0.0;
117: }
118: }
120: /* Create KAIJ matrix TA */
121: MatCreateKAIJ(A, p, q, S, T, &TA);
122: MatGetLocalSize(A, &m, &n);
123: MatGetSize(A, &M, &N);
125: MatConvert(TA, MATAIJ, MAT_INITIAL_MATRIX, &B);
127: /* Test MatKAIJGetScaledIdentity() */
128: MatKAIJGetScaledIdentity(TA, &flg);
130: /* Test MatMult() */
131: MatMultEqual(TA, B, 10, &flg);
133: /* Test MatMultAdd() */
134: MatMultAddEqual(TA, B, 10, &flg);
137: MatDestroy(&TA);
138: MatDestroy(&B);
140: MatCreateKAIJ(A, p, q, NULL, T, &TA);
141: /* Test MatKAIJGetScaledIdentity() */
142: MatKAIJGetScaledIdentity(TA, &flg);
144: MatDestroy(&TA);
146: for (i = 0; i < p; i++) {
147: for (j = 0; j < q; j++) {
148: if (i == j) S[i + j * p] = T[i + j * p] = 2.0;
149: else S[i + j * p] = T[i + j * p] = 0.0;
150: }
151: }
152: MatCreateKAIJ(A, p, q, S, T, &TA);
153: /* Test MatKAIJGetScaledIdentity() */
154: MatKAIJGetScaledIdentity(TA, &flg);
156: MatDestroy(&TA);
157: }
159: /* Done with all tests */
161: PetscFree2(S, T);
162: MatDestroy(&A);
163: PetscFinalize();
164: return 0;
165: }
167: /*TEST
169: build:
170: requires: !complex
172: test:
173: requires: datafilespath !complex double !defined(PETSC_USE_64BIT_INDICES)
174: output_file: output/ex177.out
175: nsize: {{1 2 3 4}}
176: args: -f ${DATAFILESPATH}/matrices/small -p {{2 3 7}} -q {{3 7}} -viewer_binary_skip_info
178: TEST*/