1 static char help[] = "Tests MatIncreaseOverlap(), MatCreateSubMatrices() for MatBAIJ format.\n"; 2 3 #include <petscmat.h> 4 5 int main(int argc, char **args) 6 { 7 Mat A, B, E, Bt, *submatA, *submatB; 8 PetscInt bs = 1, m = 43, ov = 1, i, j, k, *rows, *cols, M, nd = 5, *idx, mm, nn, lsize; 9 PetscScalar *vals, rval; 10 IS *is1, *is2; 11 PetscRandom rdm; 12 Vec xx, s1, s2; 13 PetscReal s1norm, s2norm, rnorm, tol = PETSC_SQRT_MACHINE_EPSILON; 14 PetscBool flg; 15 16 PetscFunctionBeginUser; 17 PetscCall(PetscInitialize(&argc, &args, NULL, help)); 18 PetscCall(PetscOptionsGetInt(NULL, NULL, "-mat_block_size", &bs, NULL)); 19 PetscCall(PetscOptionsGetInt(NULL, NULL, "-mat_size", &m, NULL)); 20 PetscCall(PetscOptionsGetInt(NULL, NULL, "-ov", &ov, NULL)); 21 PetscCall(PetscOptionsGetInt(NULL, NULL, "-nd", &nd, NULL)); 22 M = m * bs; 23 24 PetscCall(MatCreateSeqBAIJ(PETSC_COMM_SELF, bs, M, M, 1, NULL, &A)); 25 PetscCall(MatSetOption(A, MAT_NEW_NONZERO_ALLOCATION_ERR, PETSC_FALSE)); 26 PetscCall(MatCreateSeqAIJ(PETSC_COMM_SELF, M, M, 15, NULL, &B)); 27 PetscCall(MatSetBlockSize(B, bs)); 28 PetscCall(MatSetOption(B, MAT_NEW_NONZERO_ALLOCATION_ERR, PETSC_FALSE)); 29 PetscCall(PetscRandomCreate(PETSC_COMM_SELF, &rdm)); 30 PetscCall(PetscRandomSetFromOptions(rdm)); 31 32 PetscCall(PetscMalloc1(bs, &rows)); 33 PetscCall(PetscMalloc1(bs, &cols)); 34 PetscCall(PetscMalloc1(bs * bs, &vals)); 35 PetscCall(PetscMalloc1(M, &idx)); 36 37 /* Now set blocks of values */ 38 for (i = 0; i < 20 * bs; i++) { 39 PetscInt nr = 1, nc = 1; 40 PetscCall(PetscRandomGetValue(rdm, &rval)); 41 cols[0] = bs * (int)(PetscRealPart(rval) * m); 42 PetscCall(PetscRandomGetValue(rdm, &rval)); 43 rows[0] = bs * (int)(PetscRealPart(rval) * m); 44 for (j = 1; j < bs; j++) { 45 PetscCall(PetscRandomGetValue(rdm, &rval)); 46 if (PetscRealPart(rval) > .5) rows[nr++] = rows[0] + j - 1; 47 } 48 for (j = 1; j < bs; j++) { 49 PetscCall(PetscRandomGetValue(rdm, &rval)); 50 if (PetscRealPart(rval) > .5) cols[nc++] = cols[0] + j - 1; 51 } 52 53 for (j = 0; j < nr * nc; j++) { 54 PetscCall(PetscRandomGetValue(rdm, &rval)); 55 vals[j] = rval; 56 } 57 PetscCall(MatSetValues(A, nr, rows, nc, cols, vals, ADD_VALUES)); 58 PetscCall(MatSetValues(B, nr, rows, nc, cols, vals, ADD_VALUES)); 59 } 60 61 PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY)); 62 PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY)); 63 PetscCall(MatAssemblyBegin(B, MAT_FINAL_ASSEMBLY)); 64 PetscCall(MatAssemblyEnd(B, MAT_FINAL_ASSEMBLY)); 65 66 /* Test MatConvert_SeqAIJ_Seq(S)BAIJ handles incompletely filled blocks */ 67 PetscCall(MatConvert(B, MATBAIJ, MAT_INITIAL_MATRIX, &E)); 68 PetscCall(MatDestroy(&E)); 69 PetscCall(MatTranspose(B, MAT_INITIAL_MATRIX, &Bt)); 70 PetscCall(MatAXPY(Bt, 1.0, B, DIFFERENT_NONZERO_PATTERN)); 71 PetscCall(MatSetOption(Bt, MAT_SYMMETRIC, PETSC_TRUE)); 72 PetscCall(MatConvert(Bt, MATSBAIJ, MAT_INITIAL_MATRIX, &E)); 73 PetscCall(MatDestroy(&E)); 74 PetscCall(MatDestroy(&Bt)); 75 76 /* Test MatIncreaseOverlap() */ 77 PetscCall(PetscMalloc1(nd, &is1)); 78 PetscCall(PetscMalloc1(nd, &is2)); 79 80 for (i = 0; i < nd; i++) { 81 PetscCall(PetscRandomGetValue(rdm, &rval)); 82 lsize = (int)(PetscRealPart(rval) * m); 83 for (j = 0; j < lsize; j++) { 84 PetscCall(PetscRandomGetValue(rdm, &rval)); 85 idx[j * bs] = bs * (int)(PetscRealPart(rval) * m); 86 for (k = 1; k < bs; k++) idx[j * bs + k] = idx[j * bs] + k; 87 } 88 PetscCall(ISCreateGeneral(PETSC_COMM_SELF, lsize * bs, idx, PETSC_COPY_VALUES, is1 + i)); 89 PetscCall(ISCreateGeneral(PETSC_COMM_SELF, lsize * bs, idx, PETSC_COPY_VALUES, is2 + i)); 90 } 91 PetscCall(MatIncreaseOverlap(A, nd, is1, ov)); 92 PetscCall(MatIncreaseOverlap(B, nd, is2, ov)); 93 94 for (i = 0; i < nd; ++i) { 95 PetscCall(ISEqual(is1[i], is2[i], &flg)); 96 PetscCheck(flg, PETSC_COMM_SELF, PETSC_ERR_PLIB, "i=%" PetscInt_FMT ", flg =%d", i, (int)flg); 97 } 98 99 for (i = 0; i < nd; ++i) { 100 PetscCall(ISSort(is1[i])); 101 PetscCall(ISSort(is2[i])); 102 } 103 104 PetscCall(MatCreateSubMatrices(A, nd, is1, is1, MAT_INITIAL_MATRIX, &submatA)); 105 PetscCall(MatCreateSubMatrices(B, nd, is2, is2, MAT_INITIAL_MATRIX, &submatB)); 106 107 /* Test MatMult() */ 108 for (i = 0; i < nd; i++) { 109 PetscCall(MatGetSize(submatA[i], &mm, &nn)); 110 PetscCall(VecCreateSeq(PETSC_COMM_SELF, mm, &xx)); 111 PetscCall(VecDuplicate(xx, &s1)); 112 PetscCall(VecDuplicate(xx, &s2)); 113 for (j = 0; j < 3; j++) { 114 PetscCall(VecSetRandom(xx, rdm)); 115 PetscCall(MatMult(submatA[i], xx, s1)); 116 PetscCall(MatMult(submatB[i], xx, s2)); 117 PetscCall(VecNorm(s1, NORM_2, &s1norm)); 118 PetscCall(VecNorm(s2, NORM_2, &s2norm)); 119 rnorm = s2norm - s1norm; 120 if (rnorm < -tol || rnorm > tol) PetscCall(PetscPrintf(PETSC_COMM_SELF, "Error:MatMult - Norm1=%16.14e Norm2=%16.14e\n", (double)s1norm, (double)s2norm)); 121 } 122 PetscCall(VecDestroy(&xx)); 123 PetscCall(VecDestroy(&s1)); 124 PetscCall(VecDestroy(&s2)); 125 } 126 /* Now test MatCreateSubmatrices with MAT_REUSE_MATRIX option */ 127 PetscCall(MatCreateSubMatrices(A, nd, is1, is1, MAT_REUSE_MATRIX, &submatA)); 128 PetscCall(MatCreateSubMatrices(B, nd, is2, is2, MAT_REUSE_MATRIX, &submatB)); 129 130 /* Test MatMult() */ 131 for (i = 0; i < nd; i++) { 132 PetscCall(MatGetSize(submatA[i], &mm, &nn)); 133 PetscCall(VecCreateSeq(PETSC_COMM_SELF, mm, &xx)); 134 PetscCall(VecDuplicate(xx, &s1)); 135 PetscCall(VecDuplicate(xx, &s2)); 136 for (j = 0; j < 3; j++) { 137 PetscCall(VecSetRandom(xx, rdm)); 138 PetscCall(MatMult(submatA[i], xx, s1)); 139 PetscCall(MatMult(submatB[i], xx, s2)); 140 PetscCall(VecNorm(s1, NORM_2, &s1norm)); 141 PetscCall(VecNorm(s2, NORM_2, &s2norm)); 142 rnorm = s2norm - s1norm; 143 if (rnorm < -tol || rnorm > tol) PetscCall(PetscPrintf(PETSC_COMM_SELF, "Error:MatMult - Norm1=%16.14e Norm2=%16.14e\n", (double)s1norm, (double)s2norm)); 144 } 145 PetscCall(VecDestroy(&xx)); 146 PetscCall(VecDestroy(&s1)); 147 PetscCall(VecDestroy(&s2)); 148 } 149 150 /* Free allocated memory */ 151 for (i = 0; i < nd; ++i) { 152 PetscCall(ISDestroy(&is1[i])); 153 PetscCall(ISDestroy(&is2[i])); 154 } 155 PetscCall(MatDestroySubMatrices(nd, &submatA)); 156 PetscCall(MatDestroySubMatrices(nd, &submatB)); 157 PetscCall(PetscFree(is1)); 158 PetscCall(PetscFree(is2)); 159 PetscCall(PetscFree(idx)); 160 PetscCall(PetscFree(rows)); 161 PetscCall(PetscFree(cols)); 162 PetscCall(PetscFree(vals)); 163 PetscCall(MatDestroy(&A)); 164 PetscCall(MatDestroy(&B)); 165 PetscCall(PetscRandomDestroy(&rdm)); 166 PetscCall(PetscFinalize()); 167 return 0; 168 } 169 170 /*TEST 171 172 test: 173 args: -mat_block_size {{1 2 5 7 8}} -ov {{1 3}} -mat_size {{11 13}} -nd {{7}} 174 output_file: output/empty.out 175 176 TEST*/ 177