5:  #include src/mat/impls/aij/seq/aij.h
 6:  #include src/sys/ctable.h

  8: typedef struct {
  9:   Mat           A,B;                   /* local submatrices: A (diag part),
 10:                                            B (off-diag part) */
 11:   PetscMPIInt   size;                   /* size of communicator */
 12:   PetscMPIInt   rank;                   /* rank of proc in communicator */

 14:   /* The following variables are used for matrix assembly */

 16:   PetscTruth    donotstash;             /* PETSC_TRUE if off processor entries dropped */
 17:   MPI_Request   *send_waits;            /* array of send requests */
 18:   MPI_Request   *recv_waits;            /* array of receive requests */
 19:   PetscInt      nsends,nrecvs;         /* numbers of sends and receives */
 20:   PetscScalar   *svalues,*rvalues;     /* sending and receiving data */
 21:   PetscInt      rmax;                   /* maximum message length */
 22: #if defined (PETSC_USE_CTABLE)
 23:   PetscTable    colmap;
 24: #else
 25:   PetscInt      *colmap;                /* local col number of off-diag col */
 26: #endif
 27:   PetscInt      *garray;                /* global index of all off-processor columns */

 29:   /* The following variables are used for matrix-vector products */

 31:   Vec           lvec;              /* local vector */
 32:   VecScatter    Mvctx;             /* scatter context for vector */
 33:   PetscTruth    roworiented;       /* if true, row-oriented input, default true */

 35:   /* The following variables are for MatGetRow() */

 37:   PetscInt      *rowindices;       /* column indices for row */
 38:   PetscScalar   *rowvalues;        /* nonzero values in row */
 39:   PetscTruth    getrowactive;      /* indicates MatGetRow(), not restored */

 41: } Mat_MPIAIJ;

 43: typedef struct { /* used by MatMatMult_MPIAIJ_MPIAIJ and MatPtAP_MPIAIJ_MPIAIJ for reusing symbolic mat product */
 44:   PetscInt    *startsj;
 45:   PetscScalar *bufa;
 46:   IS          isrowa,isrowb,iscolb;
 47:   Mat         *aseq,*bseq,C_seq; /* A_seq=aseq[0], B_seq=bseq[0] */
 48:   Mat         A_loc,B_seq;
 49:   Mat         B_loc,B_oth;  /* partial B_seq -- intend to replace B_seq */
 50:   PetscInt    brstart; /* starting owned rows of B in matrix bseq[0]; brend = brstart+B->m */
 51:   PetscInt    *abi,*abj; /* symbolic i and j arrays of the local product A_loc*B_seq */
 52:   PetscInt    abnz_max;  /* max(abi[i+1] - abi[i]), max num of nnz in a row of A_loc*B_seq */
 53:   MatReuse    reuse;
 54:   PetscErrorCode (*MatDestroy)(Mat);
 55:   PetscErrorCode (*MatDuplicate)(Mat,MatDuplicateOption,Mat*);
 56: } Mat_MatMatMultMPI;

 58: typedef struct { /* used by MatMerge_SeqsToMPI for reusing the merged matrix */
 59:   PetscMap     rowmap;
 60:   PetscInt     **buf_ri,**buf_rj;
 61:   PetscMPIInt  *len_s,*len_r,*id_r; /* array of length of comm->size, store send/recv matrix values */
 62:   PetscMPIInt  nsend,nrecv;
 63:   PetscInt     *bi,*bj; /* i and j array of the local portion of mpi C=P^T*A*P */
 64:   PetscInt     *owners_co,*coi,*coj; /* i and j array of (p->B)^T*A*P - used in the communication */
 65:   PetscErrorCode (*MatDestroy)(Mat);
 66:   PetscErrorCode (*MatDuplicate)(Mat,MatDuplicateOption,Mat*);
 67: } Mat_Merge_SeqsToMPI;

 69: EXTERN PetscErrorCode MatSetColoring_MPIAIJ(Mat,ISColoring);
 70: EXTERN PetscErrorCode MatSetValuesAdic_MPIAIJ(Mat,void*);
 71: EXTERN PetscErrorCode MatSetValuesAdifor_MPIAIJ(Mat,PetscInt,void*);
 72: EXTERN PetscErrorCode MatSetUpMultiply_MPIAIJ(Mat);
 73: EXTERN PetscErrorCode DisAssemble_MPIAIJ(Mat);
 74: EXTERN PetscErrorCode MatDuplicate_MPIAIJ(Mat,MatDuplicateOption,Mat *);
 75: EXTERN PetscErrorCode MatIncreaseOverlap_MPIAIJ(Mat,PetscInt,IS [],PetscInt);
 76: EXTERN PetscErrorCode MatFDColoringCreate_MPIAIJ(Mat,ISColoring,MatFDColoring);
 77: EXTERN PetscErrorCode MatGetSubMatrices_MPIAIJ (Mat,PetscInt,const IS[],const IS[],MatReuse,Mat *[]);
 78: EXTERN PetscErrorCode MatGetSubMatrix_MPIAIJ (Mat,IS,IS,PetscInt,MatReuse,Mat *);
 79: EXTERN PetscErrorCode MatLoad_MPIAIJ(PetscViewer, MatType,Mat*);
 80: EXTERN PetscErrorCode MatMatMult_MPIAIJ_MPIAIJ(Mat,Mat,MatReuse,PetscReal,Mat*);
 81: EXTERN PetscErrorCode MatMatMultSymbolic_MPIAIJ_MPIAIJ(Mat,Mat,PetscReal,Mat*);
 82: EXTERN PetscErrorCode MatMatMultNumeric_MPIAIJ_MPIAIJ(Mat,Mat,Mat);
 83: EXTERN PetscErrorCode MatPtAPSymbolic_MPIAIJ(Mat,Mat,PetscReal,Mat*);
 84: EXTERN PetscErrorCode MatPtAPNumeric_MPIAIJ(Mat,Mat,Mat);
 85: EXTERN PetscErrorCode MatPtAPSymbolic_MPIAIJ_MPIAIJ(Mat,Mat,PetscReal,Mat*);
 86: EXTERN PetscErrorCode MatPtAPNumeric_MPIAIJ_MPIAIJ(Mat,Mat,Mat);
 87: EXTERN PetscErrorCode MatSetValues_MPIAIJ(Mat,PetscInt,const PetscInt[],PetscInt,const PetscInt[],const PetscScalar [],InsertMode);
 88: EXTERN PetscErrorCode MatDestroy_MPIAIJ_MatMatMult(Mat);
 89: EXTERN PetscErrorCode PetscContainerDestroy_Mat_MatMatMultMPI(void*);

 92: EXTERN PetscErrorCode MatMPIAIJSetPreallocation_MPIAIJ(Mat,PetscInt,const PetscInt[],PetscInt,const PetscInt[]);

 95: #if !defined(PETSC_USE_COMPLEX) && !defined(PETSC_USE_SINGLE) && !defined(PETSC_USE_MAT_SINGLE)
 96: EXTERN PetscErrorCode MatLUFactorSymbolic_MPIAIJ_TFS(Mat,IS,IS,MatFactorInfo*,Mat*);
 97: #endif
 98: EXTERN PetscErrorCode MatSolve_MPIAIJ(Mat,Vec,Vec);
 99: EXTERN PetscErrorCode MatILUFactor_MPIAIJ(Mat,IS,IS,MatFactorInfo *);

102: EXTERN PetscErrorCode  MatGetDiagonalBlock_MPIAIJ(Mat,PetscTruth *,MatReuse,Mat *);
103: EXTERN PetscErrorCode  MatDiagonalScaleLocal_MPIAIJ(Mat,Vec);

106: #endif