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;

 17:   PetscFunctionBeginUser;
 18:   PetscCall(PetscInitialize(&argc, &args, (char *)0, help));
 19:   PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank));
 20:   PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size));

 22:   /* Load AIJ matrix A */
 23:   PetscCall(PetscOptionsGetString(NULL, NULL, "-f", file, sizeof(file), &flg));
 24:   PetscCheck(flg, PETSC_COMM_WORLD, PETSC_ERR_USER, "Must indicate binary file with the -f option");
 25:   PetscCall(PetscViewerBinaryOpen(PETSC_COMM_WORLD, file, FILE_MODE_READ, &fd));
 26:   PetscCall(MatCreate(PETSC_COMM_WORLD, &A));
 27:   PetscCall(MatLoad(A, fd));
 28:   PetscCall(PetscViewerDestroy(&fd));

 30:   /* Get dof, then create S and T */
 31:   PetscCall(PetscOptionsGetInt(NULL, NULL, "-p", &p, NULL));
 32:   PetscCall(PetscOptionsGetInt(NULL, NULL, "-q", &q, NULL));
 33:   PetscCall(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:   PetscCall(MatCreateKAIJ(A, p, q, S, T, &TA));
 48:   PetscCall(MatGetLocalSize(A, &m, &n));
 49:   PetscCall(MatGetSize(A, &M, &N));

 51:   PetscCall(MatConvert(TA, MATAIJ, MAT_INITIAL_MATRIX, &B));

 53:   /* Test MatKAIJGetScaledIdentity() */
 54:   PetscCall(MatKAIJGetScaledIdentity(TA, &flg));
 55:   PetscCheck(!flg, PETSC_COMM_WORLD, PETSC_ERR_PLIB, "Error in Test 1: MatKAIJGetScaledIdentity()");
 56:   /* Test MatMult() */
 57:   PetscCall(MatMultEqual(TA, B, 10, &flg));
 58:   PetscCheck(flg, PETSC_COMM_WORLD, PETSC_ERR_CONV_FAILED, "Error in Test 1: MatMult() for KAIJ matrix");
 59:   /* Test MatMultAdd() */
 60:   PetscCall(MatMultAddEqual(TA, B, 10, &flg));
 61:   PetscCheck(flg, PETSC_COMM_WORLD, PETSC_ERR_CONV_FAILED, "Error in Test 1: MatMultAdd() for KAIJ matrix");

 63:   PetscCall(MatDestroy(&TA));
 64:   PetscCall(MatDestroy(&B));

 66:   /* Test KAIJ when S is NULL */

 68:   /* Create KAIJ matrix TA */
 69:   PetscCall(MatCreateKAIJ(A, p, q, NULL, T, &TA));
 70:   PetscCall(MatGetLocalSize(A, &m, &n));
 71:   PetscCall(MatGetSize(A, &M, &N));

 73:   PetscCall(MatConvert(TA, MATAIJ, MAT_INITIAL_MATRIX, &B));

 75:   /* Test MatKAIJGetScaledIdentity() */
 76:   PetscCall(MatKAIJGetScaledIdentity(TA, &flg));
 77:   PetscCheck(!flg, PETSC_COMM_WORLD, PETSC_ERR_PLIB, "Error in Test 2: MatKAIJGetScaledIdentity()");
 78:   /* Test MatMult() */
 79:   PetscCall(MatMultEqual(TA, B, 10, &flg));
 80:   PetscCheck(flg, PETSC_COMM_WORLD, PETSC_ERR_CONV_FAILED, "Error in Test 2: MatMult() for KAIJ matrix");
 81:   /* Test MatMultAdd() */
 82:   PetscCall(MatMultAddEqual(TA, B, 10, &flg));
 83:   PetscCheck(flg, PETSC_COMM_WORLD, PETSC_ERR_CONV_FAILED, "Error in Test 2: MatMultAdd() for KAIJ matrix");

 85:   PetscCall(MatDestroy(&TA));
 86:   PetscCall(MatDestroy(&B));

 88:   /* Test KAIJ when T is NULL */

 90:   /* Create KAIJ matrix TA */
 91:   PetscCall(MatCreateKAIJ(A, p, q, S, NULL, &TA));
 92:   PetscCall(MatGetLocalSize(A, &m, &n));
 93:   PetscCall(MatGetSize(A, &M, &N));

 95:   PetscCall(MatConvert(TA, MATAIJ, MAT_INITIAL_MATRIX, &B));

 97:   /* Test MatKAIJGetScaledIdentity() */
 98:   PetscCall(MatKAIJGetScaledIdentity(TA, &flg));
 99:   PetscCheck(!flg, PETSC_COMM_WORLD, PETSC_ERR_PLIB, "Error in Test 3: MatKAIJGetScaledIdentity()");
100:   /* Test MatMult() */
101:   PetscCall(MatMultEqual(TA, B, 10, &flg));
102:   PetscCheck(flg, PETSC_COMM_WORLD, PETSC_ERR_CONV_FAILED, "Error in Test 3: MatMult() for KAIJ matrix");
103:   /* Test MatMultAdd() */
104:   PetscCall(MatMultAddEqual(TA, B, 10, &flg));
105:   PetscCheck(flg, PETSC_COMM_WORLD, PETSC_ERR_CONV_FAILED, "Error in Test 3: MatMultAdd() for KAIJ matrix");

107:   PetscCall(MatDestroy(&TA));
108:   PetscCall(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:     PetscCall(MatCreateKAIJ(A, p, q, S, T, &TA));
122:     PetscCall(MatGetLocalSize(A, &m, &n));
123:     PetscCall(MatGetSize(A, &M, &N));

125:     PetscCall(MatConvert(TA, MATAIJ, MAT_INITIAL_MATRIX, &B));

127:     /* Test MatKAIJGetScaledIdentity() */
128:     PetscCall(MatKAIJGetScaledIdentity(TA, &flg));
129:     PetscCheck(!flg, PETSC_COMM_WORLD, PETSC_ERR_PLIB, "Error in Test 4: MatKAIJGetScaledIdentity()");
130:     /* Test MatMult() */
131:     PetscCall(MatMultEqual(TA, B, 10, &flg));
132:     PetscCheck(flg, PETSC_COMM_WORLD, PETSC_ERR_CONV_FAILED, "Error in Test 4: MatMult() for KAIJ matrix");
133:     /* Test MatMultAdd() */
134:     PetscCall(MatMultAddEqual(TA, B, 10, &flg));
135:     PetscCheck(flg, PETSC_COMM_WORLD, PETSC_ERR_CONV_FAILED, "Error in Test 4: MatMultAdd() for KAIJ matrix");

137:     PetscCall(MatDestroy(&TA));
138:     PetscCall(MatDestroy(&B));

140:     PetscCall(MatCreateKAIJ(A, p, q, NULL, T, &TA));
141:     /* Test MatKAIJGetScaledIdentity() */
142:     PetscCall(MatKAIJGetScaledIdentity(TA, &flg));
143:     PetscCheck(flg, PETSC_COMM_WORLD, PETSC_ERR_PLIB, "Error in Test 5: MatKAIJGetScaledIdentity()");
144:     PetscCall(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:     PetscCall(MatCreateKAIJ(A, p, q, S, T, &TA));
153:     /* Test MatKAIJGetScaledIdentity() */
154:     PetscCall(MatKAIJGetScaledIdentity(TA, &flg));
155:     PetscCheck(flg, PETSC_COMM_WORLD, PETSC_ERR_PLIB, "Error in Test 6: MatKAIJGetScaledIdentity()");
156:     PetscCall(MatDestroy(&TA));
157:   }

159:   /* Done with all tests */

161:   PetscCall(PetscFree2(S, T));
162:   PetscCall(MatDestroy(&A));
163:   PetscCall(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*/