Actual source code: vecimpl.h

      2: /*
      3:    This private file should not be included in users' code.
      4:    Defines the fields shared by all vector implementations.

      6: */

      8: #ifndef __VECIMPL_H

     11: #include <petscvec.h>
     12: #include <petsc/private/petscimpl.h>
     13: #include <petscviewer.h>

     15: PETSC_EXTERN PetscBool VecRegisterAllCalled;
     16: PETSC_EXTERN PetscErrorCode VecRegisterAll(void);
     17: PETSC_EXTERN MPI_Op MPIU_MAXINDEX_OP;
     18: PETSC_EXTERN MPI_Op MPIU_MININDEX_OP;

     20: /* ----------------------------------------------------------------------------*/

     22: typedef struct _VecOps *VecOps;
     23: struct _VecOps {
     24:   PetscErrorCode (*duplicate)(Vec,Vec*);         /* get single vector */
     25:   PetscErrorCode (*duplicatevecs)(Vec,PetscInt,Vec**);     /* get array of vectors */
     26:   PetscErrorCode (*destroyvecs)(PetscInt,Vec[]);           /* free array of vectors */
     27:   PetscErrorCode (*dot)(Vec,Vec,PetscScalar*);             /* z = x^H * y */
     28:   PetscErrorCode (*mdot)(Vec,PetscInt,const Vec[],PetscScalar*); /* z[j] = x dot y[j] */
     29:   PetscErrorCode (*norm)(Vec,NormType,PetscReal*);        /* z = sqrt(x^H * x) */
     30:   PetscErrorCode (*tdot)(Vec,Vec,PetscScalar*);             /* x'*y */
     31:   PetscErrorCode (*mtdot)(Vec,PetscInt,const Vec[],PetscScalar*);/* z[j] = x dot y[j] */
     32:   PetscErrorCode (*scale)(Vec,PetscScalar);                 /* x = alpha * x   */
     33:   PetscErrorCode (*copy)(Vec,Vec);                     /* y = x */
     34:   PetscErrorCode (*set)(Vec,PetscScalar);                        /* y = alpha  */
     35:   PetscErrorCode (*swap)(Vec,Vec);                               /* exchange x and y */
     36:   PetscErrorCode (*axpy)(Vec,PetscScalar,Vec);                   /* y = y + alpha * x */
     37:   PetscErrorCode (*axpby)(Vec,PetscScalar,PetscScalar,Vec);      /* y = alpha * x + beta * y*/
     38:   PetscErrorCode (*maxpy)(Vec,PetscInt,const PetscScalar*,Vec*); /* y = y + alpha[j] x[j] */
     39:   PetscErrorCode (*aypx)(Vec,PetscScalar,Vec);                   /* y = x + alpha * y */
     40:   PetscErrorCode (*waxpy)(Vec,PetscScalar,Vec,Vec);         /* w = y + alpha * x */
     41:   PetscErrorCode (*axpbypcz)(Vec,PetscScalar,PetscScalar,PetscScalar,Vec,Vec);   /* z = alpha * x + beta *y + gamma *z*/
     42:   PetscErrorCode (*pointwisemult)(Vec,Vec,Vec);        /* w = x .* y */
     43:   PetscErrorCode (*pointwisedivide)(Vec,Vec,Vec);      /* w = x ./ y */
     44:   PetscErrorCode (*setvalues)(Vec,PetscInt,const PetscInt[],const PetscScalar[],InsertMode);
     45:   PetscErrorCode (*assemblybegin)(Vec);                /* start global assembly */
     46:   PetscErrorCode (*assemblyend)(Vec);                  /* end global assembly */
     47:   PetscErrorCode (*getarray)(Vec,PetscScalar**);            /* get data array */
     48:   PetscErrorCode (*getsize)(Vec,PetscInt*);
     49:   PetscErrorCode (*getlocalsize)(Vec,PetscInt*);
     50:   PetscErrorCode (*restorearray)(Vec,PetscScalar**);        /* restore data array */
     51:   PetscErrorCode (*max)(Vec,PetscInt*,PetscReal*);      /* z = max(x); idx=index of max(x) */
     52:   PetscErrorCode (*min)(Vec,PetscInt*,PetscReal*);      /* z = min(x); idx=index of min(x) */
     53:   PetscErrorCode (*setrandom)(Vec,PetscRandom);         /* set y[j] = random numbers */
     54:   PetscErrorCode (*setoption)(Vec,VecOption,PetscBool);
     55:   PetscErrorCode (*setvaluesblocked)(Vec,PetscInt,const PetscInt[],const PetscScalar[],InsertMode);
     56:   PetscErrorCode (*destroy)(Vec);
     57:   PetscErrorCode (*view)(Vec,PetscViewer);
     58:   PetscErrorCode (*placearray)(Vec,const PetscScalar*);     /* place data array */
     59:   PetscErrorCode (*replacearray)(Vec,const PetscScalar*);     /* replace data array */
     60:   PetscErrorCode (*dot_local)(Vec,Vec,PetscScalar*);
     61:   PetscErrorCode (*tdot_local)(Vec,Vec,PetscScalar*);
     62:   PetscErrorCode (*norm_local)(Vec,NormType,PetscReal*);
     63:   PetscErrorCode (*mdot_local)(Vec,PetscInt,const Vec[],PetscScalar*);
     64:   PetscErrorCode (*mtdot_local)(Vec,PetscInt,const Vec[],PetscScalar*);
     65:   PetscErrorCode (*load)(Vec,PetscViewer);
     66:   PetscErrorCode (*reciprocal)(Vec);
     67:   PetscErrorCode (*conjugate)(Vec);
     68:   PetscErrorCode (*setlocaltoglobalmapping)(Vec,ISLocalToGlobalMapping);
     69:   PetscErrorCode (*setvalueslocal)(Vec,PetscInt,const PetscInt *,const PetscScalar *,InsertMode);
     70:   PetscErrorCode (*resetarray)(Vec);      /* vector points to its original array, i.e. undoes any VecPlaceArray() */
     71:   PetscErrorCode (*setfromoptions)(PetscOptionItems*,Vec);
     72:   PetscErrorCode (*maxpointwisedivide)(Vec,Vec,PetscReal*);      /* m = max abs(x ./ y) */
     73:   PetscErrorCode (*pointwisemax)(Vec,Vec,Vec);
     74:   PetscErrorCode (*pointwisemaxabs)(Vec,Vec,Vec);
     75:   PetscErrorCode (*pointwisemin)(Vec,Vec,Vec);
     76:   PetscErrorCode (*getvalues)(Vec,PetscInt,const PetscInt[],PetscScalar[]);
     77:   PetscErrorCode (*sqrt)(Vec);
     78:   PetscErrorCode (*abs)(Vec);
     79:   PetscErrorCode (*exp)(Vec);
     80:   PetscErrorCode (*log)(Vec);
     81:   PetscErrorCode (*shift)(Vec,PetscScalar);
     82:   PetscErrorCode (*create)(Vec);
     83:   PetscErrorCode (*stridegather)(Vec,PetscInt,Vec,InsertMode);
     84:   PetscErrorCode (*stridescatter)(Vec,PetscInt,Vec,InsertMode);
     85:   PetscErrorCode (*dotnorm2)(Vec,Vec,PetscScalar*,PetscScalar*);
     86:   PetscErrorCode (*getsubvector)(Vec,IS,Vec*);
     87:   PetscErrorCode (*restoresubvector)(Vec,IS,Vec*);
     88:   PetscErrorCode (*getarrayread)(Vec,const PetscScalar**);
     89:   PetscErrorCode (*restorearrayread)(Vec,const PetscScalar**);
     90:   PetscErrorCode (*stridesubsetgather)(Vec,PetscInt,const PetscInt[],const PetscInt[],Vec,InsertMode);
     91:   PetscErrorCode (*stridesubsetscatter)(Vec,PetscInt,const PetscInt[],const PetscInt[],Vec,InsertMode);
     92:   PetscErrorCode (*viewnative)(Vec,PetscViewer);
     93:   PetscErrorCode (*loadnative)(Vec,PetscViewer);
     94:   PetscErrorCode (*getlocalvector)(Vec,Vec);
     95:   PetscErrorCode (*restorelocalvector)(Vec,Vec);
     96:   PetscErrorCode (*getlocalvectorread)(Vec,Vec);
     97:   PetscErrorCode (*restorelocalvectorread)(Vec,Vec);
     98:   PetscErrorCode (*bindtocpu)(Vec,PetscBool);
     99:   PetscErrorCode (*getarraywrite)(Vec,PetscScalar**);
    100:   PetscErrorCode (*restorearraywrite)(Vec,PetscScalar**);
    101:   PetscErrorCode (*getarrayandmemtype)(Vec,PetscScalar**,PetscMemType*);
    102:   PetscErrorCode (*getarrayreadandmemtype)(Vec,const PetscScalar**,PetscMemType*);
    103:   PetscErrorCode (*restorearrayandmemtype)(Vec,PetscScalar**);
    104:   PetscErrorCode (*restorearrayreadandmemtype)(Vec,const PetscScalar**);
    105:   PetscErrorCode (*concatenate)(PetscInt,const Vec[],Vec*,IS*[]);
    106: };

    108: /*
    109:     The stash is used to temporarily store inserted vec values that
    110:   belong to another processor. During the assembly phase the stashed
    111:   values are moved to the correct processor and
    112: */

    114: typedef struct {
    115:   PetscInt      nmax;                   /* maximum stash size */
    116:   PetscInt      umax;                   /* max stash size user wants */
    117:   PetscInt      oldnmax;                /* the nmax value used previously */
    118:   PetscInt      n;                      /* stash size */
    119:   PetscInt      bs;                     /* block size of the stash */
    120:   PetscInt      reallocs;               /* preserve the no of mallocs invoked */
    121:   PetscInt      *idx;                   /* global row numbers in stash */
    122:   PetscScalar   *array;                 /* array to hold stashed values */
    123:   /* The following variables are used for communication */
    124:   MPI_Comm      comm;
    125:   PetscMPIInt   size,rank;
    126:   PetscMPIInt   tag1,tag2;
    127:   MPI_Request   *send_waits;            /* array of send requests */
    128:   MPI_Request   *recv_waits;            /* array of receive requests */
    129:   MPI_Status    *send_status;           /* array of send status */
    130:   PetscInt      nsends,nrecvs;          /* numbers of sends and receives */
    131:   PetscScalar   *svalues,*rvalues;      /* sending and receiving data */
    132:   PetscInt      *sindices,*rindices;
    133:   PetscInt      rmax;                   /* maximum message length */
    134:   PetscInt      *nprocs;                /* tmp data used both during scatterbegin and end */
    135:   PetscInt      nprocessed;             /* number of messages already processed */
    136:   PetscBool     donotstash;
    137:   PetscBool     ignorenegidx;           /* ignore negative indices passed into VecSetValues/VetGetValues */
    138:   InsertMode    insertmode;
    139:   PetscInt      *bowners;
    140: } VecStash;

    142: struct _p_Vec {
    143:   PETSCHEADER(struct _VecOps);
    144:   PetscLayout            map;
    145:   void                   *data;     /* implementation-specific data */
    146:   PetscBool              array_gotten;
    147:   VecStash               stash,bstash; /* used for storing off-proc values during assembly */
    148:   PetscBool              petscnative;  /* means the ->data starts with VECHEADER and can use VecGetArrayFast()*/
    149:   PetscInt               lock;         /* lock state. vector can be free (=0), locked for read (>0) or locked for write(<0) */
    150:   PetscOffloadMask       offloadmask;  /* a mask which indicates where the valid vector data is (GPU, CPU or both) */
    151: #if defined(PETSC_HAVE_DEVICE)
    152:   void                   *spptr; /* this is the special pointer to the array on the GPU */
    153:   PetscBool              boundtocpu;
    154:   size_t                 minimum_bytes_pinned_memory; /* minimum data size in bytes for which pinned memory will be allocated */
    155:   PetscBool              pinned_memory; /* PETSC_TRUE if the current host allocation has been made from pinned memory. */
    156: #endif
    157:   char                   *defaultrandtype;
    158: };

    160: PETSC_EXTERN PetscLogEvent VEC_SetRandom;
    161: PETSC_EXTERN PetscLogEvent VEC_View;
    162: PETSC_EXTERN PetscLogEvent VEC_Max;
    163: PETSC_EXTERN PetscLogEvent VEC_Min;
    164: PETSC_EXTERN PetscLogEvent VEC_Dot;
    165: PETSC_EXTERN PetscLogEvent VEC_MDot;
    166: PETSC_EXTERN PetscLogEvent VEC_TDot;
    167: PETSC_EXTERN PetscLogEvent VEC_MTDot;
    168: PETSC_EXTERN PetscLogEvent VEC_Norm;
    169: PETSC_EXTERN PetscLogEvent VEC_Normalize;
    170: PETSC_EXTERN PetscLogEvent VEC_Scale;
    171: PETSC_EXTERN PetscLogEvent VEC_Copy;
    172: PETSC_EXTERN PetscLogEvent VEC_Set;
    173: PETSC_EXTERN PetscLogEvent VEC_AXPY;
    174: PETSC_EXTERN PetscLogEvent VEC_AYPX;
    175: PETSC_EXTERN PetscLogEvent VEC_WAXPY;
    176: PETSC_EXTERN PetscLogEvent VEC_MAXPY;
    177: PETSC_EXTERN PetscLogEvent VEC_AssemblyEnd;
    178: PETSC_EXTERN PetscLogEvent VEC_PointwiseMult;
    179: PETSC_EXTERN PetscLogEvent VEC_SetValues;
    180: PETSC_EXTERN PetscLogEvent VEC_Load;
    181: PETSC_EXTERN PetscLogEvent VEC_ScatterBegin;
    182: PETSC_EXTERN PetscLogEvent VEC_ScatterEnd;
    183: PETSC_EXTERN PetscLogEvent VEC_ReduceArithmetic;
    184: PETSC_EXTERN PetscLogEvent VEC_ReduceCommunication;
    185: PETSC_EXTERN PetscLogEvent VEC_ReduceBegin;
    186: PETSC_EXTERN PetscLogEvent VEC_ReduceEnd;
    187: PETSC_EXTERN PetscLogEvent VEC_Swap;
    188: PETSC_EXTERN PetscLogEvent VEC_AssemblyBegin;
    189: PETSC_EXTERN PetscLogEvent VEC_DotNorm2;
    190: PETSC_EXTERN PetscLogEvent VEC_AXPBYPCZ;
    191: PETSC_EXTERN PetscLogEvent VEC_Ops;
    192: PETSC_EXTERN PetscLogEvent VEC_ViennaCLCopyToGPU;
    193: PETSC_EXTERN PetscLogEvent VEC_ViennaCLCopyFromGPU;
    194: PETSC_EXTERN PetscLogEvent VEC_CUDACopyToGPU;
    195: PETSC_EXTERN PetscLogEvent VEC_CUDACopyFromGPU;
    196: PETSC_EXTERN PetscLogEvent VEC_CUDACopyToGPUSome;
    197: PETSC_EXTERN PetscLogEvent VEC_CUDACopyFromGPUSome;
    198: PETSC_EXTERN PetscLogEvent VEC_HIPCopyToGPU;
    199: PETSC_EXTERN PetscLogEvent VEC_HIPCopyFromGPU;
    200: PETSC_EXTERN PetscLogEvent VEC_HIPCopyToGPUSome;
    201: PETSC_EXTERN PetscLogEvent VEC_HIPCopyFromGPUSome;

    203: PETSC_EXTERN PetscErrorCode VecView_Seq(Vec,PetscViewer);
    204: #if defined(PETSC_HAVE_VIENNACL)
    205: PETSC_EXTERN PetscErrorCode VecViennaCLAllocateCheckHost(Vec v);
    206: PETSC_EXTERN PetscErrorCode VecViennaCLCopyFromGPU(Vec v);
    207: #endif
    208: #if defined(PETSC_HAVE_CUDA)
    209: PETSC_EXTERN PetscErrorCode VecCUDAAllocateCheckHost(Vec v);
    210: PETSC_EXTERN PetscErrorCode VecCUDACopyFromGPU(Vec v);
    211: #endif
    212: #if defined(PETSC_HAVE_HIP)
    213: PETSC_EXTERN PetscErrorCode VecHIPAllocateCheckHost(Vec v);
    214: PETSC_EXTERN PetscErrorCode VecHIPCopyFromGPU(Vec v);
    215: #endif

    218: /*
    219:      Common header shared by array based vectors,
    220:    currently Vec_Seq and Vec_MPI
    221: */
    222: #define VECHEADER                          \
    223:   PetscScalar *array;                      \
    224:   PetscScalar *array_allocated;                        /* if the array was allocated by PETSc this is its pointer */  \
    225:   PetscScalar *unplacedarray;                           /* if one called VecPlaceArray(), this is where it stashed the original */

    227: /* Lock a vector for exclusive read&write access */
    228: #if defined(PETSC_USE_DEBUG)
    229: PETSC_INTERN PetscErrorCode VecLockWriteSet_Private(Vec,PetscBool);
    230: #else
    231: #define VecLockWriteSet_Private(x,flg) 0
    232: #endif

    234: /* Default obtain and release vectors; can be used by any implementation */
    235: PETSC_EXTERN PetscErrorCode VecDuplicateVecs_Default(Vec,PetscInt,Vec *[]);
    236: PETSC_EXTERN PetscErrorCode VecDestroyVecs_Default(PetscInt,Vec []);
    237: PETSC_EXTERN PetscErrorCode VecView_Binary(Vec, PetscViewer);
    238: PETSC_EXTERN PetscErrorCode VecLoad_Binary(Vec, PetscViewer);
    239: PETSC_EXTERN PetscErrorCode VecLoad_Default(Vec, PetscViewer);

    241: PETSC_EXTERN PetscInt  NormIds[7];  /* map from NormType to IDs used to cache/retreive values of norms */

    243: PETSC_INTERN PetscErrorCode VecStashCreate_Private(MPI_Comm,PetscInt,VecStash*);
    244: PETSC_INTERN PetscErrorCode VecStashDestroy_Private(VecStash*);
    245: PETSC_EXTERN PetscErrorCode VecStashExpand_Private(VecStash*,PetscInt);
    246: PETSC_INTERN PetscErrorCode VecStashScatterEnd_Private(VecStash*);
    247: PETSC_INTERN PetscErrorCode VecStashSetInitialSize_Private(VecStash*,PetscInt);
    248: PETSC_INTERN PetscErrorCode VecStashGetInfo_Private(VecStash*,PetscInt*,PetscInt*);
    249: PETSC_INTERN PetscErrorCode VecStashScatterBegin_Private(VecStash*,PetscInt*);
    250: PETSC_INTERN PetscErrorCode VecStashScatterGetMesg_Private(VecStash*,PetscMPIInt*,PetscInt**,PetscScalar**,PetscInt*);
    251: PETSC_INTERN PetscErrorCode VecStashSortCompress_Private(VecStash*);
    252: PETSC_INTERN PetscErrorCode VecStashGetOwnerList_Private(VecStash*,PetscLayout,PetscMPIInt*,PetscMPIInt**);

    254: /*
    255:   VecStashValue_Private - inserts a single value into the stash.

    257:   Input Parameters:
    258:   stash  - the stash
    259:   idx    - the global of the inserted value
    260:   values - the value inserted
    261: */
    262: PETSC_STATIC_INLINE PetscErrorCode VecStashValue_Private(VecStash *stash,PetscInt row,PetscScalar value)
    263: {
    265:   /* Check and see if we have sufficient memory */
    266:   if (((stash)->n + 1) > (stash)->nmax) {
    267:     VecStashExpand_Private(stash,1);
    268:   }
    269:   (stash)->idx[(stash)->n]   = row;
    270:   (stash)->array[(stash)->n] = value;
    271:   (stash)->n++;
    272:   return 0;
    273: }

    275: /*
    276:   VecStashValuesBlocked_Private - inserts 1 block of values into the stash.

    278:   Input Parameters:
    279:   stash  - the stash
    280:   idx    - the global block index
    281:   values - the values inserted
    282: */
    283: PETSC_STATIC_INLINE PetscErrorCode VecStashValuesBlocked_Private(VecStash *stash,PetscInt row,PetscScalar *values)
    284: {
    285:   PetscInt       jj,stash_bs=(stash)->bs;
    286:   PetscScalar    *array;
    288:   if (((stash)->n+1) > (stash)->nmax) {
    289:     VecStashExpand_Private(stash,1);
    290:   }
    291:   array = (stash)->array + stash_bs*(stash)->n;
    292:   (stash)->idx[(stash)->n]   = row;
    293:   for (jj=0; jj<stash_bs; jj++) { array[jj] = values[jj];}
    294:   (stash)->n++;
    295:   return 0;
    296: }

    298: PETSC_INTERN PetscErrorCode VecStrideGather_Default(Vec,PetscInt,Vec,InsertMode);
    299: PETSC_INTERN PetscErrorCode VecStrideScatter_Default(Vec,PetscInt,Vec,InsertMode);
    300: PETSC_INTERN PetscErrorCode VecReciprocal_Default(Vec);
    301: PETSC_INTERN PetscErrorCode VecStrideSubSetGather_Default(Vec,PetscInt,const PetscInt[],const PetscInt[],Vec,InsertMode);
    302: PETSC_INTERN PetscErrorCode VecStrideSubSetScatter_Default(Vec,PetscInt,const PetscInt[],const PetscInt[],Vec,InsertMode);

    304: #if defined(PETSC_HAVE_MATLAB_ENGINE)
    305: PETSC_EXTERN PetscErrorCode VecMatlabEnginePut_Default(PetscObject,void*);
    306: PETSC_EXTERN PetscErrorCode VecMatlabEngineGet_Default(PetscObject,void*);
    307: #endif

    309: PETSC_EXTERN PetscErrorCode PetscSectionGetField_Internal(PetscSection, PetscSection, Vec, PetscInt, PetscInt, PetscInt, IS *, Vec *);
    310: PETSC_EXTERN PetscErrorCode PetscSectionRestoreField_Internal(PetscSection, PetscSection, Vec, PetscInt, PetscInt, PetscInt, IS *, Vec *);

    312: #define VecCheckSameLocalSize(x,ar1,y,ar2) do { \
    313:     if ((x)->map->n != (y)->map->n) SETERRQ4(PETSC_COMM_SELF,PETSC_ERR_ARG_INCOMP,"Incompatible vector local lengths parameter # %d local size %D != parameter # %d local size %D", ar1,(x)->map->n, ar2,(y)->map->n); \
    314:   } while (0)

    316: #define VecCheckSameSize(x,ar1,y,ar2) do { \
    317:     if ((x)->map->N != (y)->map->N) SETERRQ4(PetscObjectComm((PetscObject)x),PETSC_ERR_ARG_INCOMP,"Incompatible vector global lengths parameter # %d global size %D != parameter # %d global size %D", ar1,(x)->map->N, ar2,(y)->map->N); \
    318:     VecCheckSameLocalSize(x,ar1,y,ar2); \
    319:   } while (0)

    321: #define VecCheckLocalSize(x,ar1,n) do { \
    322:     if ((x)->map->n != n) SETERRQ3(PETSC_COMM_SELF,PETSC_ERR_ARG_INCOMP,"Incorrect vector local size: parameter # %d local size %D != %D",ar1,(x)->map->n,n); \
    323:   } while (0)

    325: #define VecCheckSize(x,ar1,n,N) do { \
    326:     if ((x)->map->N != N) SETERRQ3(PetscObjectComm((PetscObject)x),PETSC_ERR_ARG_INCOMP,"Incorrect vector global size: parameter # %d global size %D != %D",ar1,(x)->map->N, N); \
    327:     VecCheckLocalSize(x,ar1,n); \
    328:   } while (0)

    330: typedef struct _VecTaggerOps *VecTaggerOps;
    331: struct _VecTaggerOps {
    332:   PetscErrorCode (*create) (VecTagger);
    333:   PetscErrorCode (*destroy) (VecTagger);
    334:   PetscErrorCode (*setfromoptions) (PetscOptionItems*,VecTagger);
    335:   PetscErrorCode (*setup) (VecTagger);
    336:   PetscErrorCode (*view) (VecTagger,PetscViewer);
    337:   PetscErrorCode (*computeboxes) (VecTagger,Vec,PetscInt *,VecTaggerBox **);
    338:   PetscErrorCode (*computeis) (VecTagger,Vec,IS *);
    339: };
    340: struct _p_VecTagger {
    341:   PETSCHEADER(struct _VecTaggerOps);
    342:   void      *data;
    343:   PetscInt  blocksize;
    344:   PetscBool invert;
    345:   PetscBool setupcalled;
    346: };

    348: PETSC_EXTERN PetscBool      VecTaggerRegisterAllCalled;
    349: PETSC_EXTERN PetscErrorCode VecTaggerRegisterAll(void);
    350: PETSC_EXTERN PetscErrorCode VecTaggerComputeIS_FromBoxes(VecTagger,Vec,IS*);
    351: PETSC_EXTERN PetscMPIInt Petsc_Reduction_keyval;

    353: #endif