Date: 2021-03-03T22:28:22+00:00

Actual source code: vecimpl.h
petsc-3.14.5 2021-03-03
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      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);

     18: /* ----------------------------------------------------------------------------*/

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

    101: /*
    102:     The stash is used to temporarily store inserted vec values that
    103:   belong to another processor. During the assembly phase the stashed
    104:   values are moved to the correct processor and
    105: */

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

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

    152: PETSC_EXTERN PetscLogEvent VEC_SetRandom;
    153: PETSC_EXTERN PetscLogEvent VEC_View;
    154: PETSC_EXTERN PetscLogEvent VEC_Max;
    155: PETSC_EXTERN PetscLogEvent VEC_Min;
    156: PETSC_EXTERN PetscLogEvent VEC_Dot;
    157: PETSC_EXTERN PetscLogEvent VEC_MDot;
    158: PETSC_EXTERN PetscLogEvent VEC_TDot;
    159: PETSC_EXTERN PetscLogEvent VEC_MTDot;
    160: PETSC_EXTERN PetscLogEvent VEC_Norm;
    161: PETSC_EXTERN PetscLogEvent VEC_Normalize;
    162: PETSC_EXTERN PetscLogEvent VEC_Scale;
    163: PETSC_EXTERN PetscLogEvent VEC_Copy;
    164: PETSC_EXTERN PetscLogEvent VEC_Set;
    165: PETSC_EXTERN PetscLogEvent VEC_AXPY;
    166: PETSC_EXTERN PetscLogEvent VEC_AYPX;
    167: PETSC_EXTERN PetscLogEvent VEC_WAXPY;
    168: PETSC_EXTERN PetscLogEvent VEC_MAXPY;
    169: PETSC_EXTERN PetscLogEvent VEC_AssemblyEnd;
    170: PETSC_EXTERN PetscLogEvent VEC_PointwiseMult;
    171: PETSC_EXTERN PetscLogEvent VEC_SetValues;
    172: PETSC_EXTERN PetscLogEvent VEC_Load;
    173: PETSC_EXTERN PetscLogEvent VEC_ScatterBegin;
    174: PETSC_EXTERN PetscLogEvent VEC_ScatterEnd;
    175: PETSC_EXTERN PetscLogEvent VEC_ReduceArithmetic;
    176: PETSC_EXTERN PetscLogEvent VEC_ReduceCommunication;
    177: PETSC_EXTERN PetscLogEvent VEC_ReduceBegin;
    178: PETSC_EXTERN PetscLogEvent VEC_ReduceEnd;
    179: PETSC_EXTERN PetscLogEvent VEC_Swap;
    180: PETSC_EXTERN PetscLogEvent VEC_AssemblyBegin;
    181: PETSC_EXTERN PetscLogEvent VEC_DotNorm2;
    182: PETSC_EXTERN PetscLogEvent VEC_AXPBYPCZ;
    183: PETSC_EXTERN PetscLogEvent VEC_Ops;
    184: PETSC_EXTERN PetscLogEvent VEC_ViennaCLCopyToGPU;
    185: PETSC_EXTERN PetscLogEvent VEC_ViennaCLCopyFromGPU;
    186: PETSC_EXTERN PetscLogEvent VEC_CUDACopyToGPU;
    187: PETSC_EXTERN PetscLogEvent VEC_CUDACopyFromGPU;
    188: PETSC_EXTERN PetscLogEvent VEC_CUDACopyToGPUSome;
    189: PETSC_EXTERN PetscLogEvent VEC_CUDACopyFromGPUSome;

    191: PETSC_EXTERN PetscErrorCode VecView_Seq(Vec,PetscViewer);
    192: #if defined(PETSC_HAVE_VIENNACL)
    193: PETSC_EXTERN PetscErrorCode VecViennaCLAllocateCheckHost(Vec v);
    194: PETSC_EXTERN PetscErrorCode VecViennaCLCopyFromGPU(Vec v);
    195: #endif
    196: #if defined(PETSC_HAVE_CUDA)
    197: PETSC_EXTERN PetscErrorCode VecCUDAAllocateCheckHost(Vec v);
    198: PETSC_EXTERN PetscErrorCode VecCUDACopyFromGPU(Vec v);
    199: #endif

    202: /*
    203:      Common header shared by array based vectors,
    204:    currently Vec_Seq and Vec_MPI
    205: */
    206: #define VECHEADER                          \
    207:   PetscScalar *array;                      \
    208:   PetscScalar *array_allocated;                        /* if the array was allocated by PETSc this is its pointer */  \
    209:   PetscScalar *unplacedarray;                           /* if one called VecPlaceArray(), this is where it stashed the original */

    211: /* Lock a vector for exclusive read&write access */
    212: #if defined(PETSC_USE_DEBUG)
    213: PETSC_INTERN PetscErrorCode VecLockWriteSet_Private(Vec,PetscBool);
    214: #else
    215: #define VecLockWriteSet_Private(x,flg) 0
    216: #endif

    218: /* Default obtain and release vectors; can be used by any implementation */
    219: PETSC_EXTERN PetscErrorCode VecDuplicateVecs_Default(Vec,PetscInt,Vec *[]);
    220: PETSC_EXTERN PetscErrorCode VecDestroyVecs_Default(PetscInt,Vec []);
    221: PETSC_EXTERN PetscErrorCode VecView_Binary(Vec, PetscViewer);
    222: PETSC_EXTERN PetscErrorCode VecLoad_Binary(Vec, PetscViewer);
    223: PETSC_EXTERN PetscErrorCode VecLoad_Default(Vec, PetscViewer);

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

    227: PETSC_INTERN PetscErrorCode VecStashCreate_Private(MPI_Comm,PetscInt,VecStash*);
    228: PETSC_INTERN PetscErrorCode VecStashDestroy_Private(VecStash*);
    229: PETSC_EXTERN PetscErrorCode VecStashExpand_Private(VecStash*,PetscInt);
    230: PETSC_INTERN PetscErrorCode VecStashScatterEnd_Private(VecStash*);
    231: PETSC_INTERN PetscErrorCode VecStashSetInitialSize_Private(VecStash*,PetscInt);
    232: PETSC_INTERN PetscErrorCode VecStashGetInfo_Private(VecStash*,PetscInt*,PetscInt*);
    233: PETSC_INTERN PetscErrorCode VecStashScatterBegin_Private(VecStash*,PetscInt*);
    234: PETSC_INTERN PetscErrorCode VecStashScatterGetMesg_Private(VecStash*,PetscMPIInt*,PetscInt**,PetscScalar**,PetscInt*);
    235: PETSC_INTERN PetscErrorCode VecStashSortCompress_Private(VecStash*);
    236: PETSC_INTERN PetscErrorCode VecStashGetOwnerList_Private(VecStash*,PetscLayout,PetscMPIInt*,PetscMPIInt**);

    238: /*
    239:   VecStashValue_Private - inserts a single value into the stash.

    241:   Input Parameters:
    242:   stash  - the stash
    243:   idx    - the global of the inserted value
    244:   values - the value inserted
    245: */
    246: PETSC_STATIC_INLINE PetscErrorCode VecStashValue_Private(VecStash *stash,PetscInt row,PetscScalar value)
    247: {
    249:   /* Check and see if we have sufficient memory */
    250:   if (((stash)->n + 1) > (stash)->nmax) {
    251:     VecStashExpand_Private(stash,1);
    252:   }
    253:   (stash)->idx[(stash)->n]   = row;
    254:   (stash)->array[(stash)->n] = value;
    255:   (stash)->n++;
    256:   return 0;
    257: }

    259: /*
    260:   VecStashValuesBlocked_Private - inserts 1 block of values into the stash.

    262:   Input Parameters:
    263:   stash  - the stash
    264:   idx    - the global block index
    265:   values - the values inserted
    266: */
    267: PETSC_STATIC_INLINE PetscErrorCode VecStashValuesBlocked_Private(VecStash *stash,PetscInt row,PetscScalar *values)
    268: {
    269:   PetscInt       jj,stash_bs=(stash)->bs;
    270:   PetscScalar    *array;
    272:   if (((stash)->n+1) > (stash)->nmax) {
    273:     VecStashExpand_Private(stash,1);
    274:   }
    275:   array = (stash)->array + stash_bs*(stash)->n;
    276:   (stash)->idx[(stash)->n]   = row;
    277:   for (jj=0; jj<stash_bs; jj++) { array[jj] = values[jj];}
    278:   (stash)->n++;
    279:   return 0;
    280: }

    282: PETSC_INTERN PetscErrorCode VecStrideGather_Default(Vec,PetscInt,Vec,InsertMode);
    283: PETSC_INTERN PetscErrorCode VecStrideScatter_Default(Vec,PetscInt,Vec,InsertMode);
    284: PETSC_INTERN PetscErrorCode VecReciprocal_Default(Vec);
    285: PETSC_INTERN PetscErrorCode VecStrideSubSetGather_Default(Vec,PetscInt,const PetscInt[],const PetscInt[],Vec,InsertMode);
    286: PETSC_INTERN PetscErrorCode VecStrideSubSetScatter_Default(Vec,PetscInt,const PetscInt[],const PetscInt[],Vec,InsertMode);

    288: #if defined(PETSC_HAVE_MATLAB_ENGINE)
    289: PETSC_EXTERN PetscErrorCode VecMatlabEnginePut_Default(PetscObject,void*);
    290: PETSC_EXTERN PetscErrorCode VecMatlabEngineGet_Default(PetscObject,void*);
    291: #endif

    293: PETSC_EXTERN PetscErrorCode PetscSectionGetField_Internal(PetscSection, PetscSection, Vec, PetscInt, PetscInt, PetscInt, IS *, Vec *);
    294: PETSC_EXTERN PetscErrorCode PetscSectionRestoreField_Internal(PetscSection, PetscSection, Vec, PetscInt, PetscInt, PetscInt, IS *, Vec *);

    296: #define VecCheckSameLocalSize(x,ar1,y,ar2) do { \
    297:     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); \
    298:   } while (0)

    300: #define VecCheckSameSize(x,ar1,y,ar2) do { \
    301:     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); \
    302:     VecCheckSameLocalSize(x,ar1,y,ar2); \
    303:   } while (0)

    305: #define VecCheckLocalSize(x,ar1,n) do { \
    306:     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); \
    307:   } while (0)

    309: #define VecCheckSize(x,ar1,n,N) do { \
    310:     if ((x)->map->N != N) SETERRQ(PetscObjectComm((PetscObject)x),PETSC_ERR_ARG_INCOMP,"Incorrect vector global size: parameter # %d global size %D != %D",ar1,(x)->map->N, N); \
    311:     VecCheckLocalSize(x,ar1,n); \
    312:   } while (0)

    314: typedef struct _VecTaggerOps *VecTaggerOps;
    315: struct _VecTaggerOps {
    316:   PetscErrorCode (*create) (VecTagger);
    317:   PetscErrorCode (*destroy) (VecTagger);
    318:   PetscErrorCode (*setfromoptions) (PetscOptionItems*,VecTagger);
    319:   PetscErrorCode (*setup) (VecTagger);
    320:   PetscErrorCode (*view) (VecTagger,PetscViewer);
    321:   PetscErrorCode (*computeboxes) (VecTagger,Vec,PetscInt *,VecTaggerBox **);
    322:   PetscErrorCode (*computeis) (VecTagger,Vec,IS *);
    323: };
    324: struct _p_VecTagger {
    325:   PETSCHEADER(struct _VecTaggerOps);
    326:   void      *data;
    327:   PetscInt  blocksize;
    328:   PetscBool invert;
    329:   PetscBool setupcalled;
    330: };

    332: PETSC_EXTERN PetscBool      VecTaggerRegisterAllCalled;
    333: PETSC_EXTERN PetscErrorCode VecTaggerRegisterAll(void);
    334: PETSC_EXTERN PetscErrorCode VecTaggerComputeIS_FromBoxes(VecTagger,Vec,IS*);
    335: PETSC_EXTERN PetscMPIInt Petsc_Reduction_keyval;

    337: #endif