1 static char help[] = "Tests MatTransposeMatMult() on MatLoad() matrix \n\n"; 2 3 #include <petscmat.h> 4 5 int main(int argc, char **args) 6 { 7 Mat A, C, Bdense, Cdense; 8 PetscViewer fd; /* viewer */ 9 char file[PETSC_MAX_PATH_LEN]; /* input file name */ 10 PetscBool flg, viewmats = PETSC_FALSE; 11 PetscMPIInt rank, size; 12 PetscReal fill = 1.0; 13 PetscInt m, n, i, j, BN = 10, rstart, rend, *rows, *cols; 14 PetscScalar *Barray, *Carray, rval, *array; 15 Vec x, y; 16 PetscRandom rand; 17 18 PetscFunctionBeginUser; 19 PetscCall(PetscInitialize(&argc, &args, NULL, help)); 20 PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank)); 21 22 /* Determine file from which we read the 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 26 /* Load matrix A */ 27 PetscCall(PetscViewerBinaryOpen(PETSC_COMM_WORLD, file, FILE_MODE_READ, &fd)); 28 PetscCall(MatCreate(PETSC_COMM_WORLD, &A)); 29 PetscCall(MatLoad(A, fd)); 30 PetscCall(PetscViewerDestroy(&fd)); 31 32 /* Print (for testing only) */ 33 PetscCall(PetscOptionsHasName(NULL, NULL, "-view_mats", &viewmats)); 34 if (viewmats) { 35 if (rank == 0) printf("A_aij:\n"); 36 PetscCall(MatView(A, 0)); 37 } 38 39 /* Test MatTransposeMatMult_aij_aij() */ 40 PetscCall(MatTransposeMatMult(A, A, MAT_INITIAL_MATRIX, fill, &C)); 41 if (viewmats) { 42 if (rank == 0) printf("\nC = A_aij^T * A_aij:\n"); 43 PetscCall(MatView(C, 0)); 44 } 45 PetscCall(MatDestroy(&C)); 46 PetscCall(MatGetLocalSize(A, &m, &n)); 47 48 /* create a dense matrix Bdense */ 49 PetscCall(MatCreate(PETSC_COMM_WORLD, &Bdense)); 50 PetscCall(MatSetSizes(Bdense, m, PETSC_DECIDE, PETSC_DECIDE, BN)); 51 PetscCall(MatSetType(Bdense, MATDENSE)); 52 PetscCall(MatSetFromOptions(Bdense)); 53 PetscCall(MatSetUp(Bdense)); 54 PetscCall(MatGetOwnershipRange(Bdense, &rstart, &rend)); 55 56 PetscCall(PetscMalloc3(m, &rows, BN, &cols, m * BN, &array)); 57 for (i = 0; i < m; i++) rows[i] = rstart + i; 58 PetscCall(PetscRandomCreate(PETSC_COMM_WORLD, &rand)); 59 PetscCall(PetscRandomSetFromOptions(rand)); 60 for (j = 0; j < BN; j++) { 61 cols[j] = j; 62 for (i = 0; i < m; i++) { 63 PetscCall(PetscRandomGetValue(rand, &rval)); 64 array[m * j + i] = rval; 65 } 66 } 67 PetscCall(MatSetValues(Bdense, m, rows, BN, cols, array, INSERT_VALUES)); 68 PetscCall(MatAssemblyBegin(Bdense, MAT_FINAL_ASSEMBLY)); 69 PetscCall(MatAssemblyEnd(Bdense, MAT_FINAL_ASSEMBLY)); 70 PetscCall(PetscRandomDestroy(&rand)); 71 PetscCall(PetscFree3(rows, cols, array)); 72 if (viewmats) { 73 if (rank == 0) printf("\nBdense:\n"); 74 PetscCall(MatView(Bdense, 0)); 75 } 76 77 /* Test MatTransposeMatMult_aij_dense() */ 78 PetscCall(MatTransposeMatMult(A, Bdense, MAT_INITIAL_MATRIX, fill, &C)); 79 PetscCall(MatTransposeMatMult(A, Bdense, MAT_REUSE_MATRIX, fill, &C)); 80 if (viewmats) { 81 if (rank == 0) printf("\nC=A^T*Bdense:\n"); 82 PetscCall(MatView(C, 0)); 83 } 84 85 /* Check accuracy */ 86 PetscCall(MatCreate(PETSC_COMM_WORLD, &Cdense)); 87 PetscCall(MatSetSizes(Cdense, n, PETSC_DECIDE, PETSC_DECIDE, BN)); 88 PetscCall(MatSetType(Cdense, MATDENSE)); 89 PetscCall(MatSetFromOptions(Cdense)); 90 PetscCall(MatSetUp(Cdense)); 91 PetscCall(MatAssemblyBegin(Cdense, MAT_FINAL_ASSEMBLY)); 92 PetscCall(MatAssemblyEnd(Cdense, MAT_FINAL_ASSEMBLY)); 93 94 PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size)); 95 if (size == 1) { 96 PetscCall(VecCreateSeqWithArray(PETSC_COMM_SELF, 1, m, NULL, &x)); 97 PetscCall(VecCreateSeqWithArray(PETSC_COMM_SELF, 1, n, NULL, &y)); 98 } else { 99 PetscCall(VecCreateMPIWithArray(PETSC_COMM_WORLD, 1, m, PETSC_DECIDE, NULL, &x)); 100 PetscCall(VecCreateMPIWithArray(PETSC_COMM_WORLD, 1, n, PETSC_DECIDE, NULL, &y)); 101 } 102 103 /* Cdense[:,j] = A^T * Bdense[:,j] */ 104 PetscCall(MatDenseGetArray(Bdense, &Barray)); 105 PetscCall(MatDenseGetArray(Cdense, &Carray)); 106 for (j = 0; j < BN; j++) { 107 PetscCall(VecPlaceArray(x, Barray)); 108 PetscCall(VecPlaceArray(y, Carray)); 109 110 PetscCall(MatMultTranspose(A, x, y)); 111 112 PetscCall(VecResetArray(x)); 113 PetscCall(VecResetArray(y)); 114 Barray += m; 115 Carray += n; 116 } 117 PetscCall(MatDenseRestoreArray(Bdense, &Barray)); 118 PetscCall(MatDenseRestoreArray(Cdense, &Carray)); 119 if (viewmats) { 120 if (rank == 0) printf("\nCdense:\n"); 121 PetscCall(MatView(Cdense, 0)); 122 } 123 124 PetscCall(MatEqual(C, Cdense, &flg)); 125 if (!flg) { 126 if (rank == 0) printf(" C != Cdense\n"); 127 } 128 129 /* Free data structures */ 130 PetscCall(MatDestroy(&A)); 131 PetscCall(MatDestroy(&C)); 132 PetscCall(MatDestroy(&Bdense)); 133 PetscCall(MatDestroy(&Cdense)); 134 PetscCall(VecDestroy(&x)); 135 PetscCall(VecDestroy(&y)); 136 PetscCall(PetscFinalize()); 137 return 0; 138 } 139 140 /*TEST 141 142 test: 143 requires: datafilespath !complex double !defined(PETSC_USE_64BIT_INDICES) 144 args: -f ${DATAFILESPATH}/matrices/small 145 output_file: output/empty.out 146 147 test: 148 suffix: 2 149 nsize: 3 150 requires: datafilespath !complex double !defined(PETSC_USE_64BIT_INDICES) 151 args: -f ${DATAFILESPATH}/matrices/small 152 output_file: output/empty.out 153 154 TEST*/ 155