1 #define PETSCMAT_DLL 2 3 /* 4 Defines matrix-matrix product routines for pairs of MPIAIJ matrices 5 C = A * B 6 */ 7 #include "src/mat/impls/aij/seq/aij.h" /*I "petscmat.h" I*/ 8 #include "src/mat/utils/freespace.h" 9 #include "src/mat/impls/aij/mpi/mpiaij.h" 10 #include "petscbt.h" 11 12 #undef __FUNCT__ 13 #define __FUNCT__ "MatMatMult_MPIAIJ_MPIAIJ" 14 PetscErrorCode MatMatMult_MPIAIJ_MPIAIJ(Mat A,Mat B,MatReuse scall,PetscReal fill, Mat *C) 15 { 16 PetscErrorCode ierr; 17 18 PetscFunctionBegin; 19 if (scall == MAT_INITIAL_MATRIX){ 20 ierr = MatMatMultSymbolic_MPIAIJ_MPIAIJ(A,B,fill,C);CHKERRQ(ierr);/* numeric product is computed as well */ 21 } else if (scall == MAT_REUSE_MATRIX){ 22 ierr = MatMatMultNumeric_MPIAIJ_MPIAIJ(A,B,*C);CHKERRQ(ierr); 23 } else { 24 SETERRQ1(PETSC_ERR_ARG_WRONG,"Invalid MatReuse %d",(int)scall); 25 } 26 PetscFunctionReturn(0); 27 } 28 29 #undef __FUNCT__ 30 #define __FUNCT__ "PetscObjectContainerDestroy_Mat_MatMatMultMPI" 31 PetscErrorCode PetscObjectContainerDestroy_Mat_MatMatMultMPI(void *ptr) 32 { 33 PetscErrorCode ierr; 34 Mat_MatMatMultMPI *mult=(Mat_MatMatMultMPI*)ptr; 35 36 PetscFunctionBegin; 37 if (mult->startsj){ierr = PetscFree(mult->startsj);CHKERRQ(ierr);} 38 if (mult->bufa){ierr = PetscFree(mult->bufa);CHKERRQ(ierr);} 39 if (mult->isrowa){ierr = ISDestroy(mult->isrowa);CHKERRQ(ierr);} 40 if (mult->isrowb){ierr = ISDestroy(mult->isrowb);CHKERRQ(ierr);} 41 if (mult->iscolb){ierr = ISDestroy(mult->iscolb);CHKERRQ(ierr);} 42 if (mult->C_seq){ierr = MatDestroy(mult->C_seq);CHKERRQ(ierr);} 43 if (mult->A_loc){ierr = MatDestroy(mult->A_loc);CHKERRQ(ierr); } 44 if (mult->B_seq){ierr = MatDestroy(mult->B_seq);CHKERRQ(ierr);} 45 if (mult->B_loc){ierr = MatDestroy(mult->B_loc);CHKERRQ(ierr);} 46 if (mult->B_oth){ierr = MatDestroy(mult->B_oth);CHKERRQ(ierr);} 47 if (mult->abi){ierr = PetscFree(mult->abi);CHKERRQ(ierr);} 48 if (mult->abj){ierr = PetscFree(mult->abj);CHKERRQ(ierr);} 49 ierr = PetscFree(mult);CHKERRQ(ierr); 50 PetscFunctionReturn(0); 51 } 52 53 EXTERN PetscErrorCode MatDestroy_AIJ(Mat); 54 #undef __FUNCT__ 55 #define __FUNCT__ "MatDestroy_MPIAIJ_MatMatMult" 56 PetscErrorCode MatDestroy_MPIAIJ_MatMatMult(Mat A) 57 { 58 PetscErrorCode ierr; 59 PetscObjectContainer container; 60 Mat_MatMatMultMPI *mult=PETSC_NULL; 61 62 PetscFunctionBegin; 63 ierr = PetscObjectQuery((PetscObject)A,"Mat_MatMatMultMPI",(PetscObject *)&container);CHKERRQ(ierr); 64 if (container) { 65 ierr = PetscObjectContainerGetPointer(container,(void **)&mult);CHKERRQ(ierr); 66 } else { 67 SETERRQ(PETSC_ERR_ARG_NULL,"Container does not exit"); 68 } 69 ierr = PetscObjectCompose((PetscObject)A,"Mat_MatMatMultMPI",0);CHKERRQ(ierr); 70 ierr = (*mult->MatDestroy)(A);CHKERRQ(ierr); 71 ierr = PetscObjectContainerDestroy(container);CHKERRQ(ierr); 72 PetscFunctionReturn(0); 73 } 74 75 #undef __FUNCT__ 76 #define __FUNCT__ "MatMatMultSymbolic_MPIAIJ_MPIAIJ" 77 PetscErrorCode MatMatMultSymbolic_MPIAIJ_MPIAIJ(Mat A,Mat B,PetscReal fill,Mat *C) 78 { 79 Mat_MPIAIJ *a=(Mat_MPIAIJ*)A->data,*b=(Mat_MPIAIJ*)B->data; 80 PetscErrorCode ierr; 81 PetscInt start,end; 82 Mat_MatMatMultMPI *mult; 83 PetscObjectContainer container; 84 85 PetscFunctionBegin; 86 if (a->cstart != b->rstart || a->cend != b->rend){ 87 SETERRQ4(PETSC_ERR_ARG_SIZ,"Matrix local dimensions are incompatible, (%D, %D) != (%D,%D)",a->cstart,a->cend,b->rstart,b->rend); 88 } 89 ierr = PetscNew(Mat_MatMatMultMPI,&mult);CHKERRQ(ierr); 90 91 /* create a seq matrix B_seq = submatrix of B by taking rows of B that equal to nonzero col of A */ 92 ierr = MatGetBrowsOfAcols(A,B,MAT_INITIAL_MATRIX,&mult->isrowb,&mult->iscolb,&mult->brstart,&mult->B_seq);CHKERRQ(ierr); 93 94 /* create a seq matrix A_seq = submatrix of A by taking all local rows of A */ 95 start = a->rstart; end = a->rend; 96 ierr = ISCreateStride(PETSC_COMM_SELF,end-start,start,1,&mult->isrowa);CHKERRQ(ierr); 97 ierr = MatGetLocalMatCondensed(A,MAT_INITIAL_MATRIX,&mult->isrowa,&mult->isrowb,&mult->A_loc);CHKERRQ(ierr); 98 99 /* compute C_seq = A_seq * B_seq */ 100 ierr = MatMatMult_SeqAIJ_SeqAIJ(mult->A_loc,mult->B_seq,MAT_INITIAL_MATRIX,fill,&mult->C_seq);CHKERRQ(ierr); 101 102 /* create mpi matrix C by concatinating C_seq */ 103 ierr = PetscObjectReference((PetscObject)mult->C_seq);CHKERRQ(ierr); /* prevent C_seq being destroyed by MatMerge() */ 104 ierr = MatMerge(A->comm,mult->C_seq,B->n,MAT_INITIAL_MATRIX,C);CHKERRQ(ierr); 105 106 /* attach the supporting struct to C for reuse of symbolic C */ 107 ierr = PetscObjectContainerCreate(PETSC_COMM_SELF,&container);CHKERRQ(ierr); 108 ierr = PetscObjectContainerSetPointer(container,mult);CHKERRQ(ierr); 109 ierr = PetscObjectCompose((PetscObject)(*C),"Mat_MatMatMultMPI",(PetscObject)container);CHKERRQ(ierr); 110 ierr = PetscObjectContainerSetUserDestroy(container,PetscObjectContainerDestroy_Mat_MatMatMultMPI);CHKERRQ(ierr); 111 mult->MatDestroy = (*C)->ops->destroy; 112 113 (*C)->ops->destroy = MatDestroy_MPIAIJ_MatMatMult; 114 PetscFunctionReturn(0); 115 } 116 117 /* This routine is called ONLY in the case of reusing previously computed symbolic C */ 118 #undef __FUNCT__ 119 #define __FUNCT__ "MatMatMultNumeric_MPIAIJ_MPIAIJ" 120 PetscErrorCode MatMatMultNumeric_MPIAIJ_MPIAIJ(Mat A,Mat B,Mat C) 121 { 122 PetscErrorCode ierr; 123 Mat *seq; 124 Mat_MatMatMultMPI *mult; 125 PetscObjectContainer container; 126 127 PetscFunctionBegin; 128 ierr = PetscObjectQuery((PetscObject)C,"Mat_MatMatMultMPI",(PetscObject *)&container);CHKERRQ(ierr); 129 if (container) { 130 ierr = PetscObjectContainerGetPointer(container,(void **)&mult);CHKERRQ(ierr); 131 } 132 133 seq = &mult->B_seq; 134 ierr = MatGetSubMatrices(B,1,&mult->isrowb,&mult->iscolb,MAT_REUSE_MATRIX,&seq);CHKERRQ(ierr); 135 mult->B_seq = *seq; 136 137 seq = &mult->A_loc; 138 ierr = MatGetSubMatrices(A,1,&mult->isrowa,&mult->isrowb,MAT_REUSE_MATRIX,&seq);CHKERRQ(ierr); 139 mult->A_loc = *seq; 140 141 ierr = MatMatMult_SeqAIJ_SeqAIJ(mult->A_loc,mult->B_seq,MAT_REUSE_MATRIX,0.0,&mult->C_seq);CHKERRQ(ierr); 142 143 ierr = PetscObjectReference((PetscObject)mult->C_seq);CHKERRQ(ierr); 144 ierr = MatMerge(A->comm,mult->C_seq,B->n,MAT_REUSE_MATRIX,&C);CHKERRQ(ierr); 145 PetscFunctionReturn(0); 146 } 147