Date: 2021-03-03T22:25:30+00:00

Actual source code: mpi.c
petsc-3.14.5 2021-03-03
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      1: /*
      2:       This provides a few of the MPI-uni functions that cannot be implemented
      3:     with C macros
      4: */
      5: #include <petscsys.h>
      6: #if !defined(MPIUNI_H)
      7: #error "Wrong mpi.h included! require mpi.h from MPIUNI"
      8: #endif

     10: #include <petsc/private/petscimpl.h>

     12: #if defined(PETSC_HAVE_CUDA)
     13:   #include <cuda_runtime.h>
     14: #endif

     16: #if defined(PETSC_HAVE_HIP)
     17:   #include <hip/hip_runtime.h>
     18: #endif

     20: #define MPI_SUCCESS 0
     21: #define MPI_FAILURE 1

     23: void *MPIUNI_TMP = NULL;

     25: /*
     26:        With MPI Uni there are exactly four distinct communicators:
     27:     MPI_COMM_SELF, MPI_COMM_WORLD, and a MPI_Comm_dup() of each of these (duplicates of duplicates return the same communictor)

     29:     MPI_COMM_SELF and MPI_COMM_WORLD are MPI_Comm_free() in MPI_Finalize() but in general with PETSc,
     30:      the other communicators are freed once the last PETSc object is freed (before MPI_Finalize()).

     32: */
     33: #define MAX_ATTR 256
     34: #define MAX_COMM 128

     36: typedef struct {
     37:   void *attribute_val;
     38:   int  active;
     39: } MPI_Attr;

     41: typedef struct {
     42:   void                *extra_state;
     43:   MPI_Delete_function *del;
     44:   int                 active;  /* Is this keyval in use by some comm? */
     45: } MPI_Attr_keyval;

     47: static MPI_Attr_keyval attr_keyval[MAX_ATTR];
     48: static MPI_Attr        attr[MAX_COMM][MAX_ATTR];
     49: static int             comm_active[MAX_COMM];  /* Boolean array indicating which comms are in use */
     50: static int             mpi_tag_ub = 100000000;
     51: static int             num_attr = 1; /* Maximal number of keyvals/attributes ever created, including the predefined MPI_TAG_UB attribute. */
     52: static int             MaxComm  = 2; /* Maximal number of communicators ever created, including comm_self(1), comm_world(2), but not comm_null(0) */
     53: static void*           MPIUNIF_mpi_in_place = 0;

     55: #define CommIdx(comm)  ((comm)-1)  /* the communicator's internal index used in attr[idx][] and comm_active[idx]. comm_null does not occupy slots in attr[][] */

     57: #if defined(__cplusplus)
     58: extern "C" {
     59: #endif

     61: /*
     62:    To avoid problems with prototypes to the system memcpy() it is duplicated here
     63: */
     64: int MPIUNI_Memcpy(void *dst,const void *src,int n)
     65: {
     66:   if (dst == MPI_IN_PLACE || dst == MPIUNIF_mpi_in_place) return MPI_SUCCESS;
     67:   if (src == MPI_IN_PLACE || src == MPIUNIF_mpi_in_place) return MPI_SUCCESS;
     68:   if (!n) return MPI_SUCCESS;

     70:   /* GPU-aware MPIUNI. Use synchronous copy per MPI semantics */
     71: #if defined(PETSC_HAVE_CUDA)
     72:   if (PetscCUDAInitialized) {cudaError_t cerr = cudaMemcpy(dst,src,n,cudaMemcpyDefault);if (cerr != cudaSuccess) return MPI_FAILURE;} else
     73: #elif defined(PETSC_HAVE_HIP)
     74:   if (PetscHIPInitialized)  {hipError_t  cerr = hipMemcpy(dst,src,n,hipMemcpyDefault);  if (cerr != hipSuccess)  return MPI_FAILURE;} else
     75: #endif
     76:   {memcpy(dst,src,n);}
     77:   return MPI_SUCCESS;
     78: }

     80: static int classcnt = 0;
     81: static int codecnt = 0;

     83: int MPI_Add_error_class(int *cl)
     84: {
     85:   *cl = classcnt++;
     86:   return MPI_SUCCESS;
     87: }

     89: int MPI_Add_error_code(int cl,int *co)
     90: {
     91:   if (cl >= classcnt) return MPI_FAILURE;
     92:   *co = codecnt++;
     93:   return MPI_SUCCESS;
     94: }

     96: int MPI_Type_get_envelope(MPI_Datatype datatype,int *num_integers,int *num_addresses,int *num_datatypes,int *combiner)
     97: {
     98:   int comb = datatype >> 28;
     99:   switch (comb) {
    100:   case MPI_COMBINER_NAMED:
    101:     *num_integers = 0;
    102:     *num_addresses = 0;
    103:     *num_datatypes = 0;
    104:     *combiner = comb;
    105:     break;
    106:   case MPI_COMBINER_DUP:
    107:     *num_integers = 0;
    108:     *num_addresses = 0;
    109:     *num_datatypes = 1;
    110:     *combiner = comb;
    111:     break;
    112:   case MPI_COMBINER_CONTIGUOUS:
    113:     *num_integers = 1;
    114:     *num_addresses = 0;
    115:     *num_datatypes = 1;
    116:     *combiner = comb;
    117:     break;
    118:   default:
    119:     return MPIUni_Abort(MPI_COMM_SELF,1);
    120:   }
    121:   return MPI_SUCCESS;
    122: }

    124: int MPI_Type_get_contents(MPI_Datatype datatype,int max_integers,int max_addresses,int max_datatypes,int *array_of_integers,MPI_Aint *array_of_addresses,MPI_Datatype *array_of_datatypes)
    125: {
    126:   int comb = datatype >> 28;
    127:   switch (comb) {
    128:   case MPI_COMBINER_NAMED:
    129:     return MPIUni_Abort(MPI_COMM_SELF,1);
    130:   case MPI_COMBINER_DUP:
    131:     if (max_datatypes < 1) return MPIUni_Abort(MPI_COMM_SELF,1);
    132:     array_of_datatypes[0] = datatype & 0x0fffffff;
    133:     break;
    134:   case MPI_COMBINER_CONTIGUOUS:
    135:     if (max_integers < 1 || max_datatypes < 1) return MPIUni_Abort(MPI_COMM_SELF,1);
    136:     array_of_integers[0] = (datatype >> 8) & 0xfff; /* count */
    137:     array_of_datatypes[0] = (datatype & 0x0ff000ff) | 0x100;  /* basic named type (count=1) from which the contiguous type is derived */
    138:     break;
    139:   default:
    140:     return MPIUni_Abort(MPI_COMM_SELF,1);
    141:   }
    142:   return MPI_SUCCESS;
    143: }

    145: /*
    146:    Used to set the built-in MPI_TAG_UB attribute
    147: */
    148: static int Keyval_setup(void)
    149: {
    150:   attr[CommIdx(MPI_COMM_WORLD)][0].active        = 1;
    151:   attr[CommIdx(MPI_COMM_WORLD)][0].attribute_val = &mpi_tag_ub;
    152:   attr[CommIdx(MPI_COMM_SELF)][0].active        = 1;
    153:   attr[CommIdx(MPI_COMM_SELF)][0].attribute_val = &mpi_tag_ub;
    154:   attr_keyval[0].active                          = 1;
    155:   return MPI_SUCCESS;
    156: }

    158: int MPI_Comm_create_keyval(MPI_Copy_function *copy_fn,MPI_Delete_function *delete_fn,int *keyval,void *extra_state)
    159: {
    160:   int i,keyid;
    161:   for (i=1; i<num_attr; i++) { /* the first attribute is always in use */
    162:     if (!attr_keyval[i].active) {
    163:       keyid = i;
    164:       goto found;
    165:     }
    166:   }
    167:   if (num_attr >= MAX_ATTR) return MPIUni_Abort(MPI_COMM_WORLD,1);
    168:   keyid = num_attr++;

    170: found:
    171:   attr_keyval[keyid].extra_state = extra_state;
    172:   attr_keyval[keyid].del         = delete_fn;
    173:   attr_keyval[keyid].active      = 1;
    174:   *keyval                        = keyid;
    175:   return MPI_SUCCESS;
    176: }

    178: int MPI_Comm_free_keyval(int *keyval)
    179: {
    180:   attr_keyval[*keyval].extra_state = 0;
    181:   attr_keyval[*keyval].del         = 0;
    182:   attr_keyval[*keyval].active      = 0;
    183:   *keyval = 0;
    184:   return MPI_SUCCESS;
    185: }

    187: int MPI_Comm_set_attr(MPI_Comm comm,int keyval,void *attribute_val)
    188: {
    189:   int idx = CommIdx(comm);
    190:   if (comm < 1 || comm > MaxComm) return MPI_FAILURE;
    191:   attr[idx][keyval].active        = 1;
    192:   attr[idx][keyval].attribute_val = attribute_val;
    193:   return MPI_SUCCESS;
    194: }

    196: int MPI_Comm_delete_attr(MPI_Comm comm,int keyval)
    197: {
    198:   int idx = CommIdx(comm);
    199:   if (comm < 1 || comm > MaxComm) return MPI_FAILURE;
    200:   if (attr[idx][keyval].active && attr_keyval[keyval].del) {
    201:     void *save_attribute_val        = attr[idx][keyval].attribute_val;
    202:     attr[idx][keyval].active        = 0;
    203:     attr[idx][keyval].attribute_val = 0;
    204:     (*(attr_keyval[keyval].del))(comm,keyval,save_attribute_val,attr_keyval[keyval].extra_state);
    205:   }
    206:   return MPI_SUCCESS;
    207: }

    209: int MPI_Comm_get_attr(MPI_Comm comm,int keyval,void *attribute_val,int *flag)
    210: {
    211:   int idx = CommIdx(comm);
    212:   if (comm < 1 || comm > MaxComm) return MPI_FAILURE;
    213:   if (!keyval) Keyval_setup();
    214:   *flag                  = attr[idx][keyval].active;
    215:   *(void**)attribute_val = attr[idx][keyval].attribute_val;
    216:   return MPI_SUCCESS;
    217: }

    219: int MPI_Comm_create(MPI_Comm comm,MPI_Group group,MPI_Comm *newcomm)
    220: {
    221:   int j;
    222:   if (comm < 1 || comm > MaxComm) return MPI_FAILURE;
    223:   for (j=3; j<=MaxComm; j++) {
    224:     if (!comm_active[CommIdx(j)]) {
    225:       comm_active[CommIdx(j)] = 1;
    226:       *newcomm = j;
    227:       return MPI_SUCCESS;
    228:     }
    229:   }
    230:   if (MaxComm >= MAX_COMM) return MPI_FAILURE;
    231:   *newcomm = ++MaxComm;
    232:   comm_active[CommIdx(*newcomm)] = 1;
    233:   return MPI_SUCCESS;
    234: }

    236: int MPI_Comm_dup(MPI_Comm comm,MPI_Comm *out)
    237: {
    238:   int j;
    239:   if (comm < 1 || comm > MaxComm) return MPI_FAILURE;
    240:   for (j=3; j<=MaxComm; j++) {
    241:     if (!comm_active[CommIdx(j)]) {
    242:       comm_active[CommIdx(j)] = 1;
    243:       *out = j;
    244:       return MPI_SUCCESS;
    245:     }
    246:   }
    247:   if (MaxComm >= MAX_COMM) return MPI_FAILURE;
    248:   *out = ++MaxComm;
    249:   comm_active[CommIdx(*out)] = 1;
    250:   return MPI_SUCCESS;
    251: }

    253: int MPI_Comm_free(MPI_Comm *comm)
    254: {
    255:   int i;
    256:   int idx = CommIdx(*comm);

    258:   if (*comm < 1 || *comm > MaxComm) return MPI_FAILURE;
    259:   for (i=0; i<num_attr; i++) {
    260:     if (attr[idx][i].active && attr_keyval[i].del) (*attr_keyval[i].del)(*comm,i,attr[idx][i].attribute_val,attr_keyval[i].extra_state);
    261:     attr[idx][i].active        = 0;
    262:     attr[idx][i].attribute_val = 0;
    263:   }
    264:   if (*comm >= 3) comm_active[idx] = 0;
    265:   *comm = 0;
    266:   return MPI_SUCCESS;
    267: }

    269: int MPI_Comm_size(MPI_Comm comm, int *size)
    270: {
    271:   if (comm < 1 || comm > MaxComm) return MPI_FAILURE;
    272:   *size=1;
    273:   return MPI_SUCCESS;
    274: }

    276: int MPI_Comm_rank(MPI_Comm comm, int *rank)
    277: {
    278:   if (comm < 1 || comm > MaxComm) return MPI_FAILURE;
    279:   *rank=0;
    280:   return MPI_SUCCESS;
    281: }

    283: int MPIUni_Abort(MPI_Comm comm,int errorcode)
    284: {
    285:   printf("MPI operation not supported by PETSc's sequential MPI wrappers\n");
    286:   return MPI_FAILURE;
    287: }

    289: int MPI_Abort(MPI_Comm comm,int errorcode)
    290: {
    291:   abort();
    292:   return MPI_SUCCESS;
    293: }

    295: /* --------------------------------------------------------------------------*/

    297: static int MPI_was_initialized = 0;
    298: static int MPI_was_finalized   = 0;

    300: int MPI_Init(int *argc, char ***argv)
    301: {
    302:   if (MPI_was_initialized) return MPI_FAILURE;
    303:   if (MPI_was_finalized) return MPI_FAILURE; /* MPI standard: once MPI_FINALIZE returns, no MPI routine (not even MPI_INIT) may be called, except ... */
    304:   MPI_was_initialized = 1;
    305:   return MPI_SUCCESS;
    306: }

    308: int MPI_Finalize(void)
    309: {
    310:   MPI_Comm comm;
    311:   if (MPI_was_finalized) return MPI_FAILURE;
    312:   if (!MPI_was_initialized) return MPI_FAILURE;
    313:   comm = MPI_COMM_WORLD;
    314:   MPI_Comm_free(&comm);
    315:   comm = MPI_COMM_SELF;
    316:   MPI_Comm_free(&comm);
    317: #if defined(PETSC_USE_DEBUG)
    318:   {
    319:     int i;
    320:     for (i=3; i<=MaxComm; i++) {
    321:       if (comm_active[CommIdx(i)]) printf("MPIUni warning: MPI communicator %d is not freed before MPI_Finalize()\n", i);
    322:     }
    323:   }
    324: #endif
    325:   /* reset counters */
    326:   MaxComm  = 2;
    327:   num_attr = 1;
    328:   MPI_was_finalized = 1;
    329:   return MPI_SUCCESS;
    330: }

    332: int MPI_Initialized(int *flag)
    333: {
    334:   *flag = MPI_was_initialized;
    335:   return MPI_SUCCESS;
    336: }

    338: int MPI_Finalized(int *flag)
    339: {
    340:   *flag = MPI_was_finalized;
    341:   return MPI_SUCCESS;
    342: }

    344: /* -------------------     Fortran versions of several routines ------------------ */

    346: #if defined(PETSC_HAVE_FORTRAN_CAPS)
    347: #define mpiunisetmoduleblock_          MPIUNISETMODULEBLOCK
    348: #define mpiunisetfortranbasepointers_  MPIUNISETFORTRANBASEPOINTERS
    349: #define petsc_mpi_init_                PETSC_MPI_INIT
    350: #define petsc_mpi_finalize_            PETSC_MPI_FINALIZE
    351: #define petsc_mpi_comm_size_           PETSC_MPI_COMM_SIZE
    352: #define petsc_mpi_comm_rank_           PETSC_MPI_COMM_RANK
    353: #define petsc_mpi_abort_               PETSC_MPI_ABORT
    354: #define petsc_mpi_reduce_              PETSC_MPI_REDUCE
    355: #define petsc_mpi_allreduce_           PETSC_MPI_ALLREDUCE
    356: #define petsc_mpi_barrier_             PETSC_MPI_BARRIER
    357: #define petsc_mpi_bcast_               PETSC_MPI_BCAST
    358: #define petsc_mpi_gather_              PETSC_MPI_GATHER
    359: #define petsc_mpi_allgather_           PETSC_MPI_ALLGATHER
    360: #define petsc_mpi_comm_split_          PETSC_MPI_COMM_SPLIT
    361: #define petsc_mpi_scan_                PETSC_MPI_SCAN
    362: #define petsc_mpi_send_                PETSC_MPI_SEND
    363: #define petsc_mpi_recv_                PETSC_MPI_RECV
    364: #define petsc_mpi_reduce_scatter_      PETSC_MPI_REDUCE_SCATTER
    365: #define petsc_mpi_irecv_               PETSC_MPI_IRECV
    366: #define petsc_mpi_isend_               PETSC_MPI_ISEND
    367: #define petsc_mpi_sendrecv_            PETSC_MPI_SENDRECV
    368: #define petsc_mpi_test_                PETSC_MPI_TEST
    369: #define petsc_mpi_waitall_             PETSC_MPI_WAITALL
    370: #define petsc_mpi_waitany_             PETSC_MPI_WAITANY
    371: #define petsc_mpi_allgatherv_          PETSC_MPI_ALLGATHERV
    372: #define petsc_mpi_alltoallv_           PETSC_MPI_ALLTOALLV
    373: #define petsc_mpi_comm_create_         PETSC_MPI_COMM_CREATE
    374: #define petsc_mpi_address_             PETSC_MPI_ADDRESS
    375: #define petsc_mpi_pack_                PETSC_MPI_PACK
    376: #define petsc_mpi_unpack_              PETSC_MPI_UNPACK
    377: #define petsc_mpi_pack_size_           PETSC_MPI_PACK_SIZE
    378: #define petsc_mpi_type_struct_         PETSC_MPI_TYPE_STRUCT
    379: #define petsc_mpi_type_commit_         PETSC_MPI_TYPE_COMMIT
    380: #define petsc_mpi_wtime_               PETSC_MPI_WTIME
    381: #define petsc_mpi_cancel_              PETSC_MPI_CANCEL
    382: #define petsc_mpi_comm_dup_            PETSC_MPI_COMM_DUP
    383: #define petsc_mpi_comm_free_           PETSC_MPI_COMM_FREE
    384: #define petsc_mpi_get_count_           PETSC_MPI_GET_COUNT
    385: #define petsc_mpi_get_processor_name_  PETSC_MPI_GET_PROCESSOR_NAME
    386: #define petsc_mpi_initialized_         PETSC_MPI_INITIALIZED
    387: #define petsc_mpi_iprobe_              PETSC_MPI_IPROBE
    388: #define petsc_mpi_probe_               PETSC_MPI_PROBE
    389: #define petsc_mpi_request_free_        PETSC_MPI_REQUEST_FREE
    390: #define petsc_mpi_ssend_               PETSC_MPI_SSEND
    391: #define petsc_mpi_wait_                PETSC_MPI_WAIT
    392: #define petsc_mpi_comm_group_          PETSC_MPI_COMM_GROUP
    393: #define petsc_mpi_exscan_              PETSC_MPI_EXSCAN
    394: #elif !defined(PETSC_HAVE_FORTRAN_UNDERSCORE)
    395: #define mpiunisetmoduleblock_          mpiunisetmoduleblock
    396: #define mpiunisetfortranbasepointers_  mpiunisetfortranbasepointers
    397: #define petsc_mpi_init_                petsc_mpi_init
    398: #define petsc_mpi_finalize_            petsc_mpi_finalize
    399: #define petsc_mpi_comm_size_           petsc_mpi_comm_size
    400: #define petsc_mpi_comm_rank_           petsc_mpi_comm_rank
    401: #define petsc_mpi_abort_               petsc_mpi_abort
    402: #define petsc_mpi_reduce_              petsc_mpi_reduce
    403: #define petsc_mpi_allreduce_           petsc_mpi_allreduce
    404: #define petsc_mpi_barrier_             petsc_mpi_barrier
    405: #define petsc_mpi_bcast_               petsc_mpi_bcast
    406: #define petsc_mpi_gather_              petsc_mpi_gather
    407: #define petsc_mpi_allgather_           petsc_mpi_allgather
    408: #define petsc_mpi_comm_split_          petsc_mpi_comm_split
    409: #define petsc_mpi_scan_                petsc_mpi_scan
    410: #define petsc_mpi_send_                petsc_mpi_send
    411: #define petsc_mpi_recv_                petsc_mpi_recv
    412: #define petsc_mpi_reduce_scatter_      petsc_mpi_reduce_scatter
    413: #define petsc_mpi_irecv_               petsc_mpi_irecv
    414: #define petsc_mpi_isend_               petsc_mpi_isend
    415: #define petsc_mpi_sendrecv_            petsc_mpi_sendrecv
    416: #define petsc_mpi_test_                petsc_mpi_test
    417: #define petsc_mpi_waitall_             petsc_mpi_waitall
    418: #define petsc_mpi_waitany_             petsc_mpi_waitany
    419: #define petsc_mpi_allgatherv_          petsc_mpi_allgatherv
    420: #define petsc_mpi_alltoallv_           petsc_mpi_alltoallv
    421: #define petsc_mpi_comm_create_         petsc_mpi_comm_create
    422: #define petsc_mpi_address_             petsc_mpi_address
    423: #define petsc_mpi_pack_                petsc_mpi_pack
    424: #define petsc_mpi_unpack_              petsc_mpi_unpack
    425: #define petsc_mpi_pack_size_           petsc_mpi_pack_size
    426: #define petsc_mpi_type_struct_         petsc_mpi_type_struct
    427: #define petsc_mpi_type_commit_         petsc_mpi_type_commit
    428: #define petsc_mpi_wtime_               petsc_mpi_wtime
    429: #define petsc_mpi_cancel_              petsc_mpi_cancel
    430: #define petsc_mpi_comm_dup_            petsc_mpi_comm_dup
    431: #define petsc_mpi_comm_free_           petsc_mpi_comm_free
    432: #define petsc_mpi_get_count_           petsc_mpi_get_count
    433: #define petsc_mpi_get_processor_name_  petsc_mpi_get_processor_name
    434: #define petsc_mpi_initialized_         petsc_mpi_initialized
    435: #define petsc_mpi_iprobe_              petsc_mpi_iprobe
    436: #define petsc_mpi_probe_               petsc_mpi_probe
    437: #define petsc_mpi_request_free_        petsc_mpi_request_free
    438: #define petsc_mpi_ssend_               petsc_mpi_ssend
    439: #define petsc_mpi_wait_                petsc_mpi_wait
    440: #define petsc_mpi_comm_group_          petsc_mpi_comm_group
    441: #define petsc_mpi_exscan_              petsc_mpi_exscan
    442: #endif

    444: #if defined(PETSC_HAVE_FORTRAN_UNDERSCORE_UNDERSCORE)
    445: #define petsc_mpi_init_                petsc_mpi_init__
    446: #define petsc_mpi_finalize_            petsc_mpi_finalize__
    447: #define petsc_mpi_comm_size_           petsc_mpi_comm_size__
    448: #define petsc_mpi_comm_rank_           petsc_mpi_comm_rank__
    449: #define petsc_mpi_abort_               petsc_mpi_abort__
    450: #define petsc_mpi_reduce_              petsc_mpi_reduce__
    451: #define petsc_mpi_allreduce_           petsc_mpi_allreduce__
    452: #define petsc_mpi_barrier_             petsc_mpi_barrier__
    453: #define petsc_mpi_bcast_               petsc_mpi_bcast__
    454: #define petsc_mpi_gather_              petsc_mpi_gather__
    455: #define petsc_mpi_allgather_           petsc_mpi_allgather__
    456: #define petsc_mpi_comm_split_          petsc_mpi_comm_split__
    457: #define petsc_mpi_scan_                petsc_mpi_scan__
    458: #define petsc_mpi_send_                petsc_mpi_send__
    459: #define petsc_mpi_recv_                petsc_mpi_recv__
    460: #define petsc_mpi_reduce_scatter_      petsc_mpi_reduce_scatter__
    461: #define petsc_mpi_irecv_               petsc_mpi_irecv__
    462: #define petsc_mpi_isend_               petsc_mpi_isend__
    463: #define petsc_mpi_sendrecv_            petsc_mpi_sendrecv__
    464: #define petsc_mpi_test_                petsc_mpi_test__
    465: #define petsc_mpi_waitall_             petsc_mpi_waitall__
    466: #define petsc_mpi_waitany_             petsc_mpi_waitany__
    467: #define petsc_mpi_allgatherv_          petsc_mpi_allgatherv__
    468: #define petsc_mpi_alltoallv_           petsc_mpi_alltoallv__
    469: #define petsc_mpi_comm_create_         petsc_mpi_comm_create__
    470: #define petsc_mpi_address_             petsc_mpi_address__
    471: #define petsc_mpi_pack_                petsc_mpi_pack__
    472: #define petsc_mpi_unpack_              petsc_mpi_unpack__
    473: #define petsc_mpi_pack_size_           petsc_mpi_pack_size__
    474: #define petsc_mpi_type_struct_         petsc_mpi_type_struct__
    475: #define petsc_mpi_type_commit_         petsc_mpi_type_commit__
    476: #define petsc_mpi_wtime_               petsc_mpi_wtime__
    477: #define petsc_mpi_cancel_              petsc_mpi_cancel__
    478: #define petsc_mpi_comm_dup_            petsc_mpi_comm_dup__
    479: #define petsc_mpi_comm_free_           petsc_mpi_comm_free__
    480: #define petsc_mpi_get_count_           petsc_mpi_get_count__
    481: #define petsc_mpi_get_processor_name_  petsc_mpi_get_processor_name__
    482: #define petsc_mpi_initialized_         petsc_mpi_initialized__
    483: #define petsc_mpi_iprobe_              petsc_mpi_iprobe__
    484: #define petsc_mpi_probe_               petsc_mpi_probe__
    485: #define petsc_mpi_request_free_        petsc_mpi_request_free__
    486: #define petsc_mpi_ssend_               petsc_mpi_ssend__
    487: #define petsc_mpi_wait_                petsc_mpi_wait__
    488: #define petsc_mpi_comm_group_          petsc_mpi_comm_group__
    489: #define petsc_mpi_exscan_              petsc_mpi_exscan__
    490: #endif

    492: /* Do not build fortran interface if MPI namespace colision is to be avoided */
    493: #if defined(PETSC_HAVE_FORTRAN)

    495: PETSC_EXTERN void mpiunisetmoduleblock_(void);

    497: PETSC_EXTERN void mpiunisetfortranbasepointers_(void *f_mpi_in_place)
    498: {
    499:   MPIUNIF_mpi_in_place   = f_mpi_in_place;
    500: }

    502: PETSC_EXTERN void petsc_mpi_init_(int *ierr)
    503: {
    504:   mpiunisetmoduleblock_();
    505:   *MPI_Init((int*)0, (char***)0);
    506: }

    508: PETSC_EXTERN void petsc_mpi_finalize_(int *ierr)
    509: {
    510:   *MPI_Finalize();
    511: }

    513: PETSC_EXTERN void petsc_mpi_comm_size_(MPI_Comm *comm,int *size,int *ierr)
    514: {
    515:   *size = 1;
    516:   *0;
    517: }

    519: PETSC_EXTERN void petsc_mpi_comm_rank_(MPI_Comm *comm,int *rank,int *ierr)
    520: {
    521:   *rank = 0;
    522:   *MPI_SUCCESS;
    523: }

    525: PETSC_EXTERN void petsc_mpi_comm_split_(MPI_Comm *comm,int *color,int *key, MPI_Comm *newcomm, int *ierr)
    526: {
    527:   *newcomm = *comm;
    528:   *MPI_SUCCESS;
    529: }

    531: PETSC_EXTERN void petsc_mpi_abort_(MPI_Comm *comm,int *errorcode,int *ierr)
    532: {
    533:   abort();
    534:   *MPI_SUCCESS;
    535: }

    537: PETSC_EXTERN void petsc_mpi_reduce_(void *sendbuf,void *recvbuf,int *count,int *datatype,int *op,int *root,int *comm,int *ierr)
    538: {
    539:   *MPI_Reduce(sendbuf,recvbuf,*count,*datatype,*op,*root,*comm);
    540: }

    542: PETSC_EXTERN void petsc_mpi_allreduce_(void *sendbuf,void *recvbuf,int *count,int *datatype,int *op,int *comm,int *ierr)
    543: {
    544:   *MPI_Allreduce(sendbuf,recvbuf,*count,*datatype,*op,*comm);
    545: }

    547: PETSC_EXTERN void petsc_mpi_barrier_(MPI_Comm *comm,int *ierr)
    548: {
    549:   *MPI_SUCCESS;
    550: }

    552: PETSC_EXTERN void petsc_mpi_bcast_(void *buf,int *count,int *datatype,int *root,int *comm,int *ierr)
    553: {
    554:   *MPI_SUCCESS;
    555: }

    557: PETSC_EXTERN void petsc_mpi_gather_(void *sendbuf,int *scount,int *sdatatype, void *recvbuf, int *rcount, int *rdatatype, int *root,int *comm,int *ierr)
    558: {
    559:   *MPI_Gather(sendbuf,*scount,*sdatatype,recvbuf,rcount,rdatatype,*root,*comm);
    560: }

    562: PETSC_EXTERN void petsc_mpi_allgather_(void *sendbuf,int *scount,int *sdatatype, void *recvbuf, int *rcount, int *rdatatype,int *comm,int *ierr)
    563: {
    564:   *MPI_Allgather(sendbuf,*scount,*sdatatype,recvbuf,rcount,rdatatype,*comm);
    565: }

    567: PETSC_EXTERN void petsc_mpi_scan_(void *sendbuf,void *recvbuf,int *count,int *datatype,int *op,int *comm,int *ierr)
    568: {
    569:   *MPIUNI_Memcpy(recvbuf,sendbuf,(*count)*MPI_sizeof(*datatype));
    570: }

    572: PETSC_EXTERN void petsc_mpi_send_(void *buf,int *count,int *datatype,int *dest,int *tag,int *comm,int *ierr)
    573: {
    574:   *MPIUni_Abort(MPI_COMM_WORLD,0);
    575: }

    577: PETSC_EXTERN void petsc_mpi_recv_(void *buf,int *count,int *datatype,int *source,int *tag,int *comm,int status,int *ierr)
    578: {
    579:   *MPIUni_Abort(MPI_COMM_WORLD,0);
    580: }

    582: PETSC_EXTERN void petsc_mpi_reduce_scatter_(void *sendbuf,void *recvbuf,int *recvcounts,int *datatype,int *op,int *comm,int *ierr)
    583: {
    584:   *MPIUni_Abort(MPI_COMM_WORLD,0);
    585: }

    587: PETSC_EXTERN void petsc_mpi_irecv_(void *buf,int *count, int *datatype, int *source, int *tag, int *comm, int *request, int *ierr)
    588: {
    589:   *MPIUni_Abort(MPI_COMM_WORLD,0);
    590: }

    592: PETSC_EXTERN void petsc_mpi_isend_(void *buf,int *count,int *datatype,int *dest,int *tag,int *comm,int *request, int *ierr)
    593: {
    594:   *MPIUni_Abort(MPI_COMM_WORLD,0);
    595: }

    597: PETSC_EXTERN void petsc_mpi_sendrecv_(void *sendbuf,int *sendcount,int *sendtype,int *dest,int *sendtag,void *recvbuf,int *recvcount,int *recvtype,int *source,int *recvtag,int *comm,int *status,int *ierr)
    598: {
    599:   *MPIUNI_Memcpy(recvbuf,sendbuf,(*sendcount)*MPI_sizeof(*sendtype));
    600: }

    602: PETSC_EXTERN void petsc_mpi_test_(int *request,int *flag,int *status,int *ierr)
    603: {
    604:   *MPIUni_Abort(MPI_COMM_WORLD,0);
    605: }

    607: PETSC_EXTERN void petsc_mpi_waitall_(int *count,int *array_of_requests,int *array_of_statuses,int *ierr)
    608: {
    609:   *MPI_SUCCESS;
    610: }

    612: PETSC_EXTERN void petsc_mpi_waitany_(int *count,int *array_of_requests,int * index, int *status,int *ierr)
    613: {
    614:   *MPI_SUCCESS;
    615: }

    617: PETSC_EXTERN void petsc_mpi_allgatherv_(void *sendbuf,int *sendcount,int *sendtype,void *recvbuf,int *recvcounts,int *displs,int *recvtype,int *comm,int *ierr)
    618: {
    619:   *MPI_Allgatherv(sendbuf,*sendcount,*sendtype,recvbuf,recvcounts,displs,*recvtype,*comm);
    620: }

    622: PETSC_EXTERN void petsc_mpi_alltoallv_(void *sendbuf,int *sendcounts,int *sdispls,int *sendtype,void *recvbuf,int *recvcounts,int *rdispls,int *recvtype,int *comm,int *ierr)
    623: {
    624:   *MPI_Alltoallv(sendbuf,sendcounts,sdispls,*sendtype,recvbuf,recvcounts,rdispls,*recvtype,*comm);
    625: }

    627: PETSC_EXTERN void petsc_mpi_comm_create_(int *comm,int *group,int *newcomm,int *ierr)
    628: {
    629:   *newcomm =  *comm;
    630:   *MPI_SUCCESS;
    631: }

    633: PETSC_EXTERN void petsc_mpi_address_(void *location,MPI_Aint *address,int *ierr)
    634: {
    635:   *address =  (MPI_Aint) ((char *)location);
    636:   *MPI_SUCCESS;
    637: }

    639: PETSC_EXTERN void petsc_mpi_pack_(void *inbuf,int *incount,int *datatype,void *outbuf,int *outsize,int *position,int *comm,int *ierr)
    640: {
    641:   *MPIUni_Abort(MPI_COMM_WORLD,0);
    642: }

    644: PETSC_EXTERN void petsc_mpi_unpack_(void *inbuf,int *insize,int *position,void *outbuf,int *outcount,int *datatype,int *comm,int *ierr)
    645: {
    646:   *MPIUni_Abort(MPI_COMM_WORLD,0);
    647: }

    649: PETSC_EXTERN void petsc_mpi_pack_size_(int *incount,int *datatype,int *comm,int *size,int *ierr)
    650: {
    651:   *MPIUni_Abort(MPI_COMM_WORLD,0);
    652: }

    654: PETSC_EXTERN void petsc_mpi_type_struct_(int *count,int *array_of_blocklengths,int * array_of_displaments,int *array_of_types,int *newtype,int *ierr)
    655: {
    656:   *MPIUni_Abort(MPI_COMM_WORLD,0);
    657: }

    659: PETSC_EXTERN void petsc_mpi_type_commit_(int *datatype,int *ierr)
    660: {
    661:   *MPI_SUCCESS;
    662: }

    664: double petsc_mpi_wtime_(void)
    665: {
    666:   return 0.0;
    667: }

    669: PETSC_EXTERN void petsc_mpi_cancel_(int *request,int *ierr)
    670: {
    671:   *MPI_SUCCESS;
    672: }

    674: PETSC_EXTERN void petsc_mpi_comm_dup_(int *comm,int *out,int *ierr)
    675: {
    676:   *out  = *comm;
    677:   *MPI_SUCCESS;
    678: }

    680: PETSC_EXTERN void petsc_mpi_comm_free_(int *comm,int *ierr)
    681: {
    682:   *MPI_SUCCESS;
    683: }

    685: PETSC_EXTERN void petsc_mpi_get_count_(int *status,int *datatype,int *count,int *ierr)
    686: {
    687:   *MPIUni_Abort(MPI_COMM_WORLD,0);
    688: }

    690: PETSC_EXTERN void petsc_mpi_get_processor_name_(char *name,int *result_len,int *ierr,PETSC_FORTRAN_CHARLEN_T len)
    691: {
    692:   MPIUNI_Memcpy(name,"localhost",9*sizeof(char));
    693:   *result_len = 9;
    694:   *MPI_SUCCESS;
    695: }

    697: PETSC_EXTERN void petsc_mpi_initialized_(int *flag,int *ierr)
    698: {
    699:   *flag = MPI_was_initialized;
    700:   *MPI_SUCCESS;
    701: }

    703: PETSC_EXTERN void petsc_mpi_iprobe_(int *source,int *tag,int *comm,int *glag,int *status,int *ierr)
    704: {
    705:   *MPI_SUCCESS;
    706: }

    708: PETSC_EXTERN void petsc_mpi_probe_(int *source,int *tag,int *comm,int *flag,int *status,int *ierr)
    709: {
    710:   *MPI_SUCCESS;
    711: }

    713: PETSC_EXTERN void petsc_mpi_request_free_(int *request,int *ierr)
    714: {
    715:   *MPI_SUCCESS;
    716: }

    718: PETSC_EXTERN void petsc_mpi_ssend_(void *buf,int *count,int *datatype,int *dest,int *tag,int *comm,int *ierr)
    719: {
    720:   *MPIUni_Abort(MPI_COMM_WORLD,0);
    721: }

    723: PETSC_EXTERN void petsc_mpi_wait_(int *request,int *status,int *ierr)
    724: {
    725:   *MPI_SUCCESS;
    726: }

    728: PETSC_EXTERN void petsc_mpi_comm_group_(int *comm,int *group,int *ierr)
    729: {
    730:   *MPI_SUCCESS;
    731: }

    733: PETSC_EXTERN void petsc_mpi_exscan_(void *sendbuf,void *recvbuf,int *count,int *datatype,int *op,int *comm,int *ierr)
    734: {
    735:   *MPI_SUCCESS;
    736: }

    738: #endif /* PETSC_HAVE_FORTRAN */

    740: #if defined(__cplusplus)
    741: }
    742: #endif