Actual source code: mpiaij.h
petsc-3.7.1 2016-05-15
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      5: #include <../src/mat/impls/aij/seq/aij.h>

      7: typedef struct { /* used by MatCreateMPIAIJSumSeqAIJ for reusing the merged matrix */
      8:   PetscLayout rowmap;
      9:   PetscInt    **buf_ri,**buf_rj;
     10:   PetscMPIInt *len_s,*len_r,*id_r;    /* array of length of comm->size, store send/recv matrix values */
     11:   PetscMPIInt nsend,nrecv;
     12:   PetscInt    *bi,*bj;    /* i and j array of the local portion of mpi C (matrix product) - rename to ci, cj! */
     13:   PetscInt    *owners_co,*coi,*coj;    /* i and j array of (p->B)^T*A*P - used in the communication */
     14:   PetscErrorCode (*destroy)(Mat);
     15:   PetscErrorCode (*duplicate)(Mat,MatDuplicateOption,Mat*);
     16: } Mat_Merge_SeqsToMPI;

     18: typedef struct { /* used by MatPtAP_MPIAIJ_MPIAIJ() and MatMatMult_MPIAIJ_MPIAIJ() */
     19:   PetscInt    *startsj_s,*startsj_r;    /* used by MatGetBrowsOfAoCols_MPIAIJ */
     20:   PetscScalar *bufa;                    /* used by MatGetBrowsOfAoCols_MPIAIJ */
     21:   Mat         P_loc,P_oth;     /* partial B_seq -- intend to replace B_seq */
     22:   PetscInt    *api,*apj;       /* symbolic i and j arrays of the local product A_loc*B_seq */
     23:   PetscScalar *apv;
     24:   MatReuse    reuse;           /* flag to skip MatGetBrowsOfAoCols_MPIAIJ() and MatMPIAIJGetLocalMat() in 1st call of MatPtAPNumeric_MPIAIJ_MPIAIJ() */
     25:   PetscScalar *apa;            /* tmp array for store a row of A*P used in MatMatMult() */
     26:   Mat         A_loc;           /* used by MatTransposeMatMult(), contains api and apj */
     27:   Mat         Pt;              /* used by MatTransposeMatMult(), Pt = P^T */
     28:   PetscBool   scalable;        /* flag determines scalable or non-scalable implementation */
     29:   Mat         Rd,Ro,AP_loc,C_loc,C_oth;

     31:   Mat_Merge_SeqsToMPI *merge;
     32:   PetscErrorCode (*destroy)(Mat);
     33:   PetscErrorCode (*duplicate)(Mat,MatDuplicateOption,Mat*);
     34: } Mat_PtAPMPI;

     36: typedef struct {
     37:   Mat A,B;                             /* local submatrices: A (diag part),
     38:                                            B (off-diag part) */
     39:   PetscMPIInt size;                     /* size of communicator */
     40:   PetscMPIInt rank;                     /* rank of proc in communicator */

     42:   /* The following variables are used for matrix assembly */
     43:   PetscBool   donotstash;               /* PETSC_TRUE if off processor entries dropped */
     44:   MPI_Request *send_waits;              /* array of send requests */
     45:   MPI_Request *recv_waits;              /* array of receive requests */
     46:   PetscInt    nsends,nrecvs;           /* numbers of sends and receives */
     47:   PetscScalar *svalues,*rvalues;       /* sending and receiving data */
     48:   PetscInt    rmax;                     /* maximum message length */
     49: #if defined(PETSC_USE_CTABLE)
     50:   PetscTable colmap;
     51: #else
     52:   PetscInt *colmap;                     /* local col number of off-diag col */
     53: #endif
     54:   PetscInt *garray;                     /* global index of all off-processor columns */

     56:   /* The following variables are used for matrix-vector products */
     57:   Vec        lvec;                 /* local vector */
     58:   Vec        diag;
     59:   VecScatter Mvctx;                /* scatter context for vector */
     60:   PetscBool  roworiented;          /* if true, row-oriented input, default true */

     62:   /* The following variables are for MatGetRow() */
     63:   PetscInt    *rowindices;         /* column indices for row */
     64:   PetscScalar *rowvalues;          /* nonzero values in row */
     65:   PetscBool   getrowactive;        /* indicates MatGetRow(), not restored */

     67:   /* Used by MatDistribute_MPIAIJ() to allow reuse of previous matrix allocation  and nonzero pattern */
     68:   PetscInt *ld;                    /* number of entries per row left of diagona block */

     70:   /* Used by MatMatMult() and MatPtAP() */
     71:   Mat_PtAPMPI *ptap;

     73:   /* used by MatMatMatMult() */
     74:   Mat_MatMatMatMult *matmatmatmult;

     76:   /* Used by MPICUSP and MPICUSPARSE classes */
     77:   void * spptr;

     79: } Mat_MPIAIJ;

     81: PETSC_EXTERN PetscErrorCode MatCreate_MPIAIJ(Mat);

     83: PETSC_INTERN PetscErrorCode MatSetColoring_MPIAIJ(Mat,ISColoring);
     84: PETSC_INTERN PetscErrorCode MatSetValuesAdifor_MPIAIJ(Mat,PetscInt,void*);
     85: PETSC_INTERN PetscErrorCode MatSetUpMultiply_MPIAIJ(Mat);
     86: PETSC_INTERN PetscErrorCode MatDisAssemble_MPIAIJ(Mat);
     87: PETSC_INTERN PetscErrorCode MatDuplicate_MPIAIJ(Mat,MatDuplicateOption,Mat*);
     88: PETSC_INTERN PetscErrorCode MatIncreaseOverlap_MPIAIJ(Mat,PetscInt,IS [],PetscInt);
     89: PETSC_INTERN PetscErrorCode MatIncreaseOverlap_MPIAIJ_Scalable(Mat,PetscInt,IS [],PetscInt);
     90: PETSC_INTERN PetscErrorCode MatFDColoringCreate_MPIXAIJ(Mat,ISColoring,MatFDColoring);
     91: PETSC_INTERN PetscErrorCode MatFDColoringSetUp_MPIXAIJ(Mat,ISColoring,MatFDColoring);
     92: PETSC_INTERN PetscErrorCode MatGetSubMatrices_MPIAIJ (Mat,PetscInt,const IS[],const IS[],MatReuse,Mat *[]);
     93: PETSC_INTERN PetscErrorCode MatGetSubMatricesMPI_MPIAIJ (Mat,PetscInt,const IS[],const IS[],MatReuse,Mat *[]);
     94: PETSC_INTERN PetscErrorCode MatGetSubMatrix_MPIAIJ_All(Mat,MatGetSubMatrixOption,MatReuse,Mat *[]);

     97: PETSC_INTERN PetscErrorCode MatGetSubMatrix_MPIAIJ(Mat,IS,IS,MatReuse,Mat*);
     98: PETSC_INTERN PetscErrorCode MatGetSubMatrix_MPIAIJ_Private (Mat,IS,IS,PetscInt,MatReuse,Mat*);
     99: PETSC_INTERN PetscErrorCode MatGetMultiProcBlock_MPIAIJ(Mat,MPI_Comm,MatReuse,Mat*);

    101: PETSC_INTERN PetscErrorCode MatLoad_MPIAIJ(Mat,PetscViewer);
    102: PETSC_INTERN PetscErrorCode MatCreateColmap_MPIAIJ_Private(Mat);
    103: PETSC_INTERN PetscErrorCode MatMatMult_MPIDense_MPIAIJ(Mat,Mat,MatReuse,PetscReal,Mat*);
    104: PETSC_INTERN PetscErrorCode MatMatMult_MPIAIJ_MPIAIJ(Mat,Mat,MatReuse,PetscReal,Mat*);
    105: PETSC_INTERN PetscErrorCode MatMatMultSymbolic_MPIAIJ_MPIAIJ_nonscalable(Mat,Mat,PetscReal,Mat*);
    106: PETSC_INTERN PetscErrorCode MatMatMultSymbolic_MPIAIJ_MPIAIJ(Mat,Mat,PetscReal,Mat*);
    107: PETSC_INTERN PetscErrorCode MatMatMultNumeric_MPIAIJ_MPIAIJ(Mat,Mat,Mat);
    108: PETSC_INTERN PetscErrorCode MatMatMultNumeric_MPIAIJ_MPIAIJ_nonscalable(Mat,Mat,Mat);

    110: PETSC_INTERN PetscErrorCode MatMatMatMult_MPIAIJ_MPIAIJ_MPIAIJ(Mat,Mat,Mat,MatReuse,PetscReal,Mat*);
    111: PETSC_INTERN PetscErrorCode MatMatMatMultSymbolic_MPIAIJ_MPIAIJ_MPIAIJ(Mat,Mat,Mat,PetscReal,Mat*);
    112: PETSC_INTERN PetscErrorCode MatMatMatMultNumeric_MPIAIJ_MPIAIJ_MPIAIJ(Mat,Mat,Mat,Mat);

    114: PETSC_INTERN PetscErrorCode MatPtAP_MPIAIJ_MPIAIJ(Mat,Mat,MatReuse,PetscReal,Mat*);
    115: PETSC_INTERN PetscErrorCode MatPtAPSymbolic_MPIAIJ_MPIAIJ(Mat,Mat,PetscReal,Mat*);
    116: PETSC_INTERN PetscErrorCode MatPtAPNumeric_MPIAIJ_MPIAIJ(Mat,Mat,Mat);

    118: PETSC_INTERN PetscErrorCode MatPtAPSymbolic_MPIAIJ_MPIAIJ_ptap(Mat,Mat,PetscReal,Mat*);
    119: PETSC_INTERN PetscErrorCode MatPtAPNumeric_MPIAIJ_MPIAIJ_ptap(Mat,Mat,Mat);

    121: PETSC_INTERN PetscErrorCode MatDestroy_MPIAIJ_PtAP(Mat);
    122: PETSC_INTERN PetscErrorCode MatDestroy_MPIAIJ(Mat);

    124: PETSC_INTERN PetscErrorCode MatGetBrowsOfAoCols_MPIAIJ(Mat,Mat,MatReuse,PetscInt**,PetscInt**,MatScalar**,Mat*);
    125: PETSC_INTERN PetscErrorCode MatSetValues_MPIAIJ(Mat,PetscInt,const PetscInt[],PetscInt,const PetscInt[],const PetscScalar [],InsertMode);
    126: PETSC_INTERN PetscErrorCode MatDestroy_MPIAIJ_MatMatMult(Mat);
    127: PETSC_INTERN PetscErrorCode PetscContainerDestroy_Mat_MatMatMultMPI(void*);
    128: PETSC_INTERN PetscErrorCode MatSetOption_MPIAIJ(Mat,MatOption,PetscBool);

    130: PETSC_INTERN PetscErrorCode MatTransposeMatMult_MPIAIJ_MPIAIJ(Mat,Mat,MatReuse,PetscReal,Mat*);
    131: PETSC_INTERN PetscErrorCode MatTransposeMatMultSymbolic_MPIAIJ_MPIAIJ_nonscalable(Mat,Mat,PetscReal,Mat*);
    132: PETSC_INTERN PetscErrorCode MatTransposeMatMultSymbolic_MPIAIJ_MPIAIJ(Mat,Mat,PetscReal,Mat*);
    133: PETSC_INTERN PetscErrorCode MatTransposeMatMultNumeric_MPIAIJ_MPIAIJ(Mat,Mat,Mat);
    134: PETSC_INTERN PetscErrorCode MatTransposeMatMultNumeric_MPIAIJ_MPIAIJ_nonscalable(Mat,Mat,Mat);
    135: PETSC_INTERN PetscErrorCode MatTransposeMatMultNumeric_MPIAIJ_MPIAIJ_matmatmult(Mat,Mat,Mat);
    136: PETSC_INTERN PetscErrorCode MatTransposeMatMult_MPIAIJ_MPIDense(Mat,Mat,MatReuse,PetscReal,Mat*);
    137: PETSC_INTERN PetscErrorCode MatTransposeMatMultSymbolic_MPIAIJ_MPIDense(Mat,Mat,PetscReal,Mat*);
    138: PETSC_INTERN PetscErrorCode MatTransposeMatMultNumeric_MPIAIJ_MPIDense(Mat,Mat,Mat);
    139: PETSC_INTERN PetscErrorCode MatGetSeqNonzeroStructure_MPIAIJ(Mat,Mat*);

    141: PETSC_INTERN PetscErrorCode MatSetFromOptions_MPIAIJ(PetscOptionItems*,Mat);
    142: PETSC_INTERN PetscErrorCode MatMPIAIJSetPreallocation_MPIAIJ(Mat,PetscInt,const PetscInt[],PetscInt,const PetscInt[]);

    144: #if !defined(PETSC_USE_COMPLEX) && !defined(PETSC_USE_REAL_SINGLE) && !defined(PETSC_USE_REAL___FLOAT128)
    145: PETSC_INTERN PetscErrorCode MatLUFactorSymbolic_MPIAIJ_TFS(Mat,IS,IS,const MatFactorInfo*,Mat*);
    146: #endif
    147: PETSC_INTERN PetscErrorCode MatSolve_MPIAIJ(Mat,Vec,Vec);
    148: PETSC_INTERN PetscErrorCode MatILUFactor_MPIAIJ(Mat,IS,IS,const MatFactorInfo*);

    150: PETSC_INTERN PetscErrorCode MatAXPYGetPreallocation_MPIX_private(PetscInt,const PetscInt*,const PetscInt*,const PetscInt*,const PetscInt*,const PetscInt*,const PetscInt*,PetscInt*);

    152: extern PetscErrorCode MatGetDiagonalBlock_MPIAIJ(Mat,Mat*);
    153: extern PetscErrorCode MatDiagonalScaleLocal_MPIAIJ(Mat,Vec);

    155: PETSC_INTERN PetscErrorCode MatGetSeqMats_MPIAIJ(Mat,Mat*,Mat*);
    156: PETSC_INTERN PetscErrorCode MatSetSeqMats_MPIAIJ(Mat,IS,IS,IS,MatStructure,Mat,Mat);

    158: /* compute apa = A[i,:]*P = Ad[i,:]*P_loc + Ao*[i,:]*P_oth */
    159: #define AProw_nonscalable(i,ad,ao,p_loc,p_oth,apa) \
    160: {\
    161:   PetscInt    _anz,_pnz,_j,_k,*_ai,*_aj,_row,*_pi,*_pj;      \
    162:   PetscScalar *_aa,_valtmp,*_pa;                             \
    163:   /* diagonal portion of A */\
    164:   _ai  = ad->i;\
    165:   _anz = _ai[i+1] - _ai[i];\
    166:   _aj  = ad->j + _ai[i];\
    167:   _aa  = ad->a + _ai[i];\
    168:   for (_j=0; _j<_anz; _j++) {\
    169:     _row = _aj[_j]; \
    170:     _pi  = p_loc->i;                                 \
    171:     _pnz = _pi[_row+1] - _pi[_row];         \
    172:     _pj  = p_loc->j + _pi[_row];                 \
    173:     _pa  = p_loc->a + _pi[_row];                 \
    174:     /* perform dense axpy */                    \
    175:     _valtmp = _aa[_j];                           \
    176:     for (_k=0; _k<_pnz; _k++) {                    \
    177:       apa[_pj[_k]] += _valtmp*_pa[_k];               \
    178:     }                                           \
    179:     PetscLogFlops(2.0*_pnz);                    \
    180:   }                                             \
    181:   /* off-diagonal portion of A */               \
    182:   _ai  = ao->i;\
    183:   _anz = _ai[i+1] - _ai[i];                     \
    184:   _aj  = ao->j + _ai[i];                         \
    185:   _aa  = ao->a + _ai[i];                         \
    186:   for (_j=0; _j<_anz; _j++) {                      \
    187:     _row = _aj[_j];    \
    188:     _pi  = p_oth->i;                         \
    189:     _pnz = _pi[_row+1] - _pi[_row];          \
    190:     _pj  = p_oth->j + _pi[_row];                  \
    191:     _pa  = p_oth->a + _pi[_row];                  \
    192:     /* perform dense axpy */                     \
    193:     _valtmp = _aa[_j];                             \
    194:     for (_k=0; _k<_pnz; _k++) {                     \
    195:       apa[_pj[_k]] += _valtmp*_pa[_k];                \
    196:     }                                            \
    197:     PetscLogFlops(2.0*_pnz);                     \
    198:   } \
    199: }
    200: #endif