1 2 static char help[] = "Tests MatCopy() and MatStore/RetrieveValues().\n\n"; 3 4 #include <petscmat.h> 5 6 int main(int argc,char **args) 7 { 8 Mat C,A; 9 PetscInt i, n = 10,midx[3],bs=1; 10 PetscScalar v[3]; 11 PetscBool flg,isAIJ; 12 MatType type; 13 PetscMPIInt size; 14 15 PetscFunctionBeginUser; 16 PetscCall(PetscInitialize(&argc,&args,(char*)0,help)); 17 PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD,&size)); 18 PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL)); 19 PetscCall(PetscOptionsGetInt(NULL,NULL,"-mat_block_size",&bs,NULL)); 20 21 PetscCall(MatCreate(PETSC_COMM_WORLD,&C)); 22 PetscCall(MatSetSizes(C,PETSC_DECIDE,PETSC_DECIDE,n,n)); 23 PetscCall(MatSetType(C,MATAIJ)); 24 PetscCall(MatSetFromOptions(C)); 25 PetscCall(PetscObjectSetName((PetscObject)C,"initial")); 26 27 PetscCall(MatGetType(C,&type)); 28 if (size == 1) { 29 PetscCall(PetscObjectTypeCompare((PetscObject)C,MATSEQAIJ,&isAIJ)); 30 } else { 31 PetscCall(PetscObjectTypeCompare((PetscObject)C,MATMPIAIJ,&isAIJ)); 32 } 33 PetscCall(MatSeqAIJSetPreallocation(C,3,NULL)); 34 PetscCall(MatMPIAIJSetPreallocation(C,3,NULL,3,NULL)); 35 PetscCall(MatSeqBAIJSetPreallocation(C,bs,3,NULL)); 36 PetscCall(MatMPIBAIJSetPreallocation(C,bs,3,NULL,3,NULL)); 37 PetscCall(MatSeqSBAIJSetPreallocation(C,bs,3,NULL)); 38 PetscCall(MatMPISBAIJSetPreallocation(C,bs,3,NULL,3,NULL)); 39 40 v[0] = -1.; v[1] = 2.; v[2] = -1.; 41 for (i=1; i<n-1; i++) { 42 midx[2] = i-1; midx[1] = i; midx[0] = i+1; 43 PetscCall(MatSetValues(C,1,&i,3,midx,v,INSERT_VALUES)); 44 } 45 i = 0; midx[0] = 0; midx[1] = 1; 46 v[0] = 2.0; v[1] = -1.; 47 PetscCall(MatSetValues(C,1,&i,2,midx,v,INSERT_VALUES)); 48 i = n-1; midx[0] = n-2; midx[1] = n-1; 49 v[0] = -1.0; v[1] = 2.; 50 PetscCall(MatSetValues(C,1,&i,2,midx,v,INSERT_VALUES)); 51 52 PetscCall(MatAssemblyBegin(C,MAT_FINAL_ASSEMBLY)); 53 PetscCall(MatAssemblyEnd(C,MAT_FINAL_ASSEMBLY)); 54 PetscCall(MatView(C,NULL)); 55 PetscCall(MatViewFromOptions(C,NULL,"-view")); 56 57 /* test matduplicate */ 58 PetscCall(MatDuplicate(C,MAT_COPY_VALUES,&A)); 59 PetscCall(PetscObjectSetName((PetscObject)A,"duplicate_copy")); 60 PetscCall(MatViewFromOptions(A,NULL,"-view")); 61 PetscCall(MatEqual(A,C,&flg)); 62 PetscCheck(flg,PETSC_COMM_SELF,PETSC_ERR_SUP,"MatDuplicate(C,MAT_COPY_VALUES,): Matrices are NOT equal"); 63 PetscCall(MatDestroy(&A)); 64 65 /* test matrices with different nonzero patterns - Note: A is created with different nonzero pattern of C! */ 66 PetscCall(MatCreate(PETSC_COMM_WORLD,&A)); 67 PetscCall(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,n,n)); 68 PetscCall(MatSetFromOptions(A)); 69 PetscCall(MatSetUp(A)); 70 PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY)); 71 PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY)); 72 73 PetscCall(MatCopy(C,A,DIFFERENT_NONZERO_PATTERN)); 74 PetscCall(PetscObjectSetName((PetscObject)A,"copy_diffnnz")); 75 PetscCall(MatViewFromOptions(A,NULL,"-view")); 76 PetscCall(MatEqual(A,C,&flg)); 77 PetscCheck(flg,PETSC_COMM_SELF,PETSC_ERR_SUP,"MatCopy(C,A,DIFFERENT_NONZERO_PATTERN): Matrices are NOT equal"); 78 79 /* test matrices with same nonzero pattern */ 80 PetscCall(MatDestroy(&A)); 81 PetscCall(MatDuplicate(C,MAT_DO_NOT_COPY_VALUES,&A)); 82 PetscCall(MatCopy(C,A,SAME_NONZERO_PATTERN)); 83 PetscCall(PetscObjectSetName((PetscObject)A,"copy_samennz")); 84 PetscCall(MatViewFromOptions(A,NULL,"-view")); 85 PetscCall(MatEqual(A,C,&flg)); 86 PetscCheck(flg,PETSC_COMM_SELF,PETSC_ERR_SUP,"MatCopy(C,A,SAME_NONZERO_PATTERN): Matrices are NOT equal"); 87 88 /* test subset nonzero pattern */ 89 PetscCall(MatCopy(C,A,SUBSET_NONZERO_PATTERN)); 90 PetscCall(PetscObjectSetName((PetscObject)A,"copy_subnnz")); 91 PetscCall(MatViewFromOptions(A,NULL,"-view")); 92 PetscCall(MatEqual(A,C,&flg)); 93 PetscCheck(flg,PETSC_COMM_SELF,PETSC_ERR_SUP,"MatCopy(C,A,SUBSET_NONZERO_PATTERN): Matrices are NOT equal"); 94 95 /* Test MatCopy on a matrix obtained after MatConvert from AIJ 96 see https://lists.mcs.anl.gov/pipermail/petsc-dev/2019-April/024289.html */ 97 PetscCall(MatHasCongruentLayouts(C,&flg)); 98 if (flg) { 99 Mat Cs,Cse; 100 MatType Ctype,Cstype; 101 102 PetscCall(MatGetType(C,&Ctype)); 103 PetscCall(MatTranspose(C,MAT_INITIAL_MATRIX,&Cs)); 104 PetscCall(MatAXPY(Cs,1.0,C,DIFFERENT_NONZERO_PATTERN)); 105 PetscCall(MatConvert(Cs,MATAIJ,MAT_INPLACE_MATRIX,&Cs)); 106 PetscCall(MatSetOption(Cs,MAT_SYMMETRIC,PETSC_TRUE)); 107 PetscCall(MatGetType(Cs,&Cstype)); 108 109 PetscCall(PetscObjectSetName((PetscObject)Cs,"symm_initial")); 110 PetscCall(MatViewFromOptions(Cs,NULL,"-view")); 111 112 PetscCall(MatConvert(Cs,Ctype,MAT_INITIAL_MATRIX,&Cse)); 113 PetscCall(PetscObjectSetName((PetscObject)Cse,"symm_conv_init")); 114 PetscCall(MatViewFromOptions(Cse,NULL,"-view")); 115 PetscCall(MatMultEqual(Cs,Cse,5,&flg)); 116 PetscCheck(flg,PETSC_COMM_SELF,PETSC_ERR_PLIB,"MatConvert MAT_INITIAL_MATRIX %s -> %s: Matrices are NOT multequal",Ctype,Cstype); 117 118 PetscCall(MatConvert(Cs,Ctype,MAT_REUSE_MATRIX,&Cse)); 119 PetscCall(PetscObjectSetName((PetscObject)Cse,"symm_conv_reuse")); 120 PetscCall(MatViewFromOptions(Cse,NULL,"-view")); 121 PetscCall(MatMultEqual(Cs,Cse,5,&flg)); 122 PetscCheck(flg,PETSC_COMM_SELF,PETSC_ERR_PLIB,"MatConvert MAT_REUSE_MATRIX %s -> %s: Matrices are NOT multequal",Ctype,Cstype); 123 124 PetscCall(MatCopy(Cs,Cse,SAME_NONZERO_PATTERN)); 125 PetscCall(PetscObjectSetName((PetscObject)Cse,"symm_conv_copy_samennz")); 126 PetscCall(MatViewFromOptions(Cse,NULL,"-view")); 127 PetscCall(MatMultEqual(Cs,Cse,5,&flg)); 128 PetscCheck(flg,PETSC_COMM_SELF,PETSC_ERR_PLIB,"MatCopy(...SAME_NONZERO_PATTERN) %s -> %s: Matrices are NOT multequal",Ctype,Cstype); 129 130 PetscCall(MatCopy(Cs,Cse,SUBSET_NONZERO_PATTERN)); 131 PetscCall(PetscObjectSetName((PetscObject)Cse,"symm_conv_copy_subnnz")); 132 PetscCall(MatViewFromOptions(Cse,NULL,"-view")); 133 PetscCall(MatMultEqual(Cs,Cse,5,&flg)); 134 PetscCheck(flg,PETSC_COMM_SELF,PETSC_ERR_PLIB,"MatCopy(...SUBSET_NONZERO_PATTERN) %s -> %s: Matrices are NOT multequal",Ctype,Cstype); 135 136 PetscCall(MatCopy(Cs,Cse,DIFFERENT_NONZERO_PATTERN)); 137 PetscCall(PetscObjectSetName((PetscObject)Cse,"symm_conv_copy_diffnnz")); 138 PetscCall(MatViewFromOptions(Cse,NULL,"-view")); 139 PetscCall(MatMultEqual(Cs,Cse,5,&flg)); 140 PetscCheck(flg,PETSC_COMM_SELF,PETSC_ERR_PLIB,"MatCopy(...DIFFERENT_NONZERO_PATTERN) %s -> %s: Matrices are NOT multequal",Ctype,Cstype); 141 142 PetscCall(MatDestroy(&Cse)); 143 PetscCall(MatDestroy(&Cs)); 144 } 145 146 /* test MatStore/RetrieveValues() */ 147 if (isAIJ) { 148 PetscCall(MatSetOption(A,MAT_NEW_NONZERO_LOCATIONS,PETSC_FALSE)); 149 PetscCall(MatStoreValues(A)); 150 PetscCall(MatZeroEntries(A)); 151 PetscCall(MatRetrieveValues(A)); 152 } 153 154 PetscCall(MatDestroy(&C)); 155 PetscCall(MatDestroy(&A)); 156 PetscCall(PetscFinalize()); 157 return 0; 158 } 159 160 /*TEST 161 162 testset: 163 nsize: {{1 2}separate output} 164 args: -view ::ascii_info -mat_type {{aij baij sbaij mpiaij mpibaij mpisbaij}separate output} -mat_block_size {{1 2}separate output} 165 166 TEST*/ 167