xref: /petsc/src/sys/mpiuni/mpi.c (revision e52336cb213eafb6e0bc1e6a0d4ebe153339e097)
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
9 #if !defined(PETSC_STDCALL)
10 #define PETSC_STDCALL
11 #endif
12 
13 #define MPI_SUCCESS 0
14 #define MPI_FAILURE 1
15 
16 void *MPIUNI_TMP         = 0;
17 int  MPIUNI_DATASIZE[10] = {sizeof(int),sizeof(float),sizeof(double),2*sizeof(double),sizeof(char),2*sizeof(int),4*sizeof(double),4,8,2*sizeof(double)};
18 /*
19        With MPI Uni there are exactly four distinct communicators:
20     MPI_COMM_SELF, MPI_COMM_WORLD, and a MPI_Comm_dup() of each of these (duplicates of duplicates return the same communictor)
21 
22     MPI_COMM_SELF and MPI_COMM_WORLD are MPI_Comm_free() in MPI_Finalize() but in general with PETSc,
23      the other communicators are freed once the last PETSc object is freed (before MPI_Finalize()).
24 
25 */
26 #define MAX_ATTR 128
27 #define MAX_COMM 128
28 
29 static int MaxComm = 2;
30 
31 typedef struct {
32   void *attribute_val;
33   int  active;
34 } MPI_Attr;
35 
36 typedef struct {
37   void                *extra_state;
38   MPI_Delete_function *del;
39 } MPI_Attr_keyval;
40 
41 static MPI_Attr_keyval attr_keyval[MAX_ATTR];
42 static MPI_Attr        attr[MAX_COMM][MAX_ATTR];
43 static int             num_attr = 1,mpi_tag_ub = 100000000;
44 
45 #if defined(__cplusplus)
46 extern "C" {
47 #endif
48 
49 /*
50    To avoid problems with prototypes to the system memcpy() it is duplicated here
51 */
52 int MPIUNI_Memcpy(void *a,const void *b,int n)
53 {
54   int  i;
55   char *aa= (char*)a;
56   char *bb= (char*)b;
57 
58   if (b == MPI_IN_PLACE) return 0;
59   for (i=0; i<n; i++) aa[i] = bb[i];
60   return 0;
61 }
62 
63 /*
64    Used to set the built-in MPI_TAG_UB attribute
65 */
66 static int Keyval_setup(void)
67 {
68   attr[MPI_COMM_WORLD-1][0].active        = 1;
69   attr[MPI_COMM_WORLD-1][0].attribute_val = &mpi_tag_ub;
70   attr[MPI_COMM_SELF-1][0].active         = 1;
71   attr[MPI_COMM_SELF-1][0].attribute_val  = &mpi_tag_ub;
72   return 0;
73 }
74 
75 int MPI_Keyval_create(MPI_Copy_function *copy_fn,MPI_Delete_function *delete_fn,int *keyval,void *extra_state)
76 {
77   if (num_attr >= MAX_ATTR) MPI_Abort(MPI_COMM_WORLD,1);
78 
79   attr_keyval[num_attr].extra_state = extra_state;
80   attr_keyval[num_attr].del         = delete_fn;
81   *keyval                           = num_attr++;
82   return 0;
83 }
84 
85 int MPI_Keyval_free(int *keyval)
86 {
87   attr_keyval[*keyval].extra_state = 0;
88   attr_keyval[*keyval].del         = 0;
89 
90   *keyval = 0;
91   return MPI_SUCCESS;
92 }
93 
94 int MPI_Attr_put(MPI_Comm comm,int keyval,void *attribute_val)
95 {
96   if (comm-1 < 0 || comm-1 > MaxComm) return 1;
97   attr[comm-1][keyval].active        = 1;
98   attr[comm-1][keyval].attribute_val = attribute_val;
99   return MPI_SUCCESS;
100 }
101 
102 int MPI_Attr_delete(MPI_Comm comm,int keyval)
103 {
104   if (comm-1 < 0 || comm-1 > MaxComm) return 1;
105   if (attr[comm-1][keyval].active && attr_keyval[keyval].del) {
106     void *save_attribute_val = attr[comm-1][keyval].attribute_val;
107     attr[comm-1][keyval].active        = 0;
108     attr[comm-1][keyval].attribute_val = 0;
109     (*(attr_keyval[keyval].del))(comm,keyval,save_attribute_val,attr_keyval[keyval].extra_state);
110   }
111   return MPI_SUCCESS;
112 }
113 
114 int MPI_Attr_get(MPI_Comm comm,int keyval,void *attribute_val,int *flag)
115 {
116   if (comm-1 < 0 || comm-1 > MaxComm) return 1;
117   if (!keyval) Keyval_setup();
118   *flag                  = attr[comm-1][keyval].active;
119   *(void**)attribute_val = attr[comm-1][keyval].attribute_val;
120   return MPI_SUCCESS;
121 }
122 
123 int MPI_Comm_create(MPI_Comm comm,MPI_Group group,MPI_Comm *newcomm)
124 {
125   if (comm-1 < 0 || comm-1 > MaxComm) return 1;
126   if (MaxComm > MAX_COMM) return MPI_FAILURE;
127   *newcomm =  MaxComm++;
128   return MPI_SUCCESS;
129 }
130 
131 int MPI_Comm_dup(MPI_Comm comm,MPI_Comm *out)
132 {
133   if (comm-1 < 0 || comm-1 > MaxComm) return 1;
134   if (MaxComm > MAX_COMM) return MPI_FAILURE;
135   *out = MaxComm++;
136   return 0;
137 }
138 
139 int MPI_Comm_free(MPI_Comm *comm)
140 {
141   int i;
142 
143   if (*comm-1 < 0 || *comm-1 > MaxComm) return 1;
144   for (i=0; i<num_attr; i++) {
145     if (attr[*comm-1][i].active && attr_keyval[i].del) (*attr_keyval[i].del)(*comm,i,attr[*comm-1][i].attribute_val,attr_keyval[i].extra_state);
146     attr[*comm-1][i].active        = 0;
147     attr[*comm-1][i].attribute_val = 0;
148   }
149   *comm = 0;
150   return MPI_SUCCESS;
151 }
152 
153 int MPI_Comm_size(MPI_Comm comm, int *size)
154 {
155   if (comm-1 < 0 || comm-1 > MaxComm) return 1;
156   *size=1;
157   return MPI_SUCCESS;
158 }
159 
160 int MPI_Comm_rank(MPI_Comm comm, int *rank)
161 {
162   if (comm-1 < 0 || comm-1 > MaxComm) return 1;
163   *rank=0;
164   return MPI_SUCCESS;
165 }
166 
167 int MPI_Abort(MPI_Comm comm,int errorcode)
168 {
169   abort();
170   return MPI_SUCCESS;
171 }
172 
173 /* --------------------------------------------------------------------------*/
174 
175 static int MPI_was_initialized = 0;
176 static int MPI_was_finalized   = 0;
177 
178 int MPI_Init(int *argc, char ***argv)
179 {
180   if (MPI_was_initialized) return 1;
181   if (MPI_was_finalized) return 1;
182   MPI_was_initialized = 1;
183   return 0;
184 }
185 
186 int MPI_Finalize(void)
187 {
188   MPI_Comm comm;
189   if (MPI_was_finalized) return 1;
190   if (!MPI_was_initialized) return 1;
191   comm = MPI_COMM_WORLD;
192   MPI_Comm_free(&comm);
193   comm = MPI_COMM_SELF;
194   MPI_Comm_free(&comm);
195   MPI_was_finalized = 1;
196   return 0;
197 }
198 
199 int MPI_Initialized(int *flag)
200 {
201   *flag = MPI_was_initialized;
202   return 0;
203 }
204 
205 int MPI_Finalized(int *flag)
206 {
207   *flag = MPI_was_finalized;
208   return 0;
209 }
210 
211 /* -------------------     Fortran versions of several routines ------------------ */
212 
213 #if defined(PETSC_HAVE_FORTRAN_CAPS)
214 #define mpi_init_             MPI_INIT
215 #define mpi_finalize_         MPI_FINALIZE
216 #define mpi_comm_size_        MPI_COMM_SIZE
217 #define mpi_comm_rank_        MPI_COMM_RANK
218 #define mpi_abort_            MPI_ABORT
219 #define mpi_reduce_           MPI_REDUCE
220 #define mpi_allreduce_        MPI_ALLREDUCE
221 #define mpi_barrier_          MPI_BARRIER
222 #define mpi_bcast_            MPI_BCAST
223 #define mpi_gather_           MPI_GATHER
224 #define mpi_allgather_        MPI_ALLGATHER
225 #define mpi_comm_split_       MPI_COMM_SPLIT
226 #define mpi_scan_             MPI_SCAN
227 #define mpi_send_             MPI_SEND
228 #define mpi_recv_             MPI_RECV
229 #define mpi_reduce_scatter_   MPI_REDUCE_SCATTER
230 #define mpi_irecv_            MPI_IRECV
231 #define mpi_isend_            MPI_ISEND
232 #define mpi_sendrecv_         MPI_SENDRECV
233 #define mpi_test_             MPI_TEST
234 #define mpi_waitall_          MPI_WAITALL
235 #define mpi_waitany_          MPI_WAITANY
236 #define mpi_allgatherv_       MPI_ALLGATHERV
237 #define mpi_alltoallv_        MPI_ALLTOALLV
238 #define mpi_comm_create_      MPI_COMM_CREATE
239 #define mpi_address_          MPI_ADDRESS
240 #define mpi_pack_             MPI_PACK
241 #define mpi_unpack_           MPI_UNPACK
242 #define mpi_pack_size_        MPI_PACK_SIZE
243 #define mpi_type_struct_      MPI_TYPE_STRUCT
244 #define mpi_type_commit_      MPI_TYPE_COMMIT
245 #define mpi_wtime_            MPI_WTIME
246 #define mpi_cancel_           MPI_CANCEL
247 #define mpi_comm_dup_         MPI_COMM_DUP
248 #define mpi_comm_free_        MPI_COMM_FREE
249 #define mpi_get_count_        MPI_GET_COUNT
250 #define mpi_get_processor_name_ MPI_GET_PROCESSOR_NAME
251 #define mpi_initialized_      MPI_INITIALIZED
252 #define mpi_iprobe_           MPI_IPROBE
253 #define mpi_probe_            MPI_PROBE
254 #define mpi_request_free_     MPI_REQUEST_FREE
255 #define mpi_ssend_            MPI_SSEND
256 #define mpi_wait_             MPI_WAIT
257 #define mpi_comm_group_       MPI_COMM_GROUP
258 #define mpi_exscan_           MPI_EXSCAN
259 #elif !defined(PETSC_HAVE_FORTRAN_UNDERSCORE)
260 #define mpi_init_             mpi_init
261 #define mpi_finalize_         mpi_finalize
262 #define mpi_comm_size_        mpi_comm_size
263 #define mpi_comm_rank_        mpi_comm_rank
264 #define mpi_abort_            mpi_abort
265 #define mpi_reduce_           mpi_reduce
266 #define mpi_allreduce_        mpi_allreduce
267 #define mpi_barrier_          mpi_barrier
268 #define mpi_bcast_            mpi_bcast
269 #define mpi_gather_           mpi_gather
270 #define mpi_allgather_        mpi_allgather
271 #define mpi_comm_split_       mpi_comm_split
272 #define mpi_scan_             mpi_scan
273 #define mpi_send_             mpi_send
274 #define mpi_recv_             mpi_recv
275 #define mpi_reduce_scatter_   mpi_reduce_scatter
276 #define mpi_irecv_            mpi_irecv
277 #define mpi_isend_            mpi_isend
278 #define mpi_sendrecv_         mpi_sendrecv
279 #define mpi_test_             mpi_test
280 #define mpi_waitall_          mpi_waitall
281 #define mpi_waitany_          mpi_waitany
282 #define mpi_allgatherv_       mpi_allgatherv
283 #define mpi_alltoallv_        mpi_alltoallv
284 #define mpi_comm_create_      mpi_comm_create
285 #define mpi_address_          mpi_address
286 #define mpi_pack_             mpi_pack
287 #define mpi_unpack_           mpi_unpack
288 #define mpi_pack_size_        mpi_pack_size
289 #define mpi_type_struct_      mpi_type_struct
290 #define mpi_type_commit_      mpi_type_commit
291 #define mpi_wtime_            mpi_wtime
292 #define mpi_cancel_           mpi_cancel
293 #define mpi_comm_dup_         mpi_comm_dup
294 #define mpi_comm_free_        mpi_comm_free
295 #define mpi_get_count_        mpi_get_count
296 #define mpi_get_processor_name_ mpi_get_processor_name
297 #define mpi_initialized_      mpi_initialized
298 #define mpi_iprobe_           mpi_iprobe
299 #define mpi_probe_            mpi_probe
300 #define mpi_request_free_     mpi_request_free
301 #define mpi_ssend_            mpi_ssend
302 #define mpi_wait_             mpi_wait
303 #define mpi_comm_group_       mpi_comm_group
304 #define mpi_exscan_           mpi_exscan
305 #endif
306 
307 #if defined(PETSC_HAVE_FORTRAN_UNDERSCORE_UNDERSCORE)
308 #define mpi_init_             mpi_init__
309 #define mpi_finalize_         mpi_finalize__
310 #define mpi_comm_size_        mpi_comm_size__
311 #define mpi_comm_rank_        mpi_comm_rank__
312 #define mpi_abort_            mpi_abort__
313 #define mpi_reduce_           mpi_reduce__
314 #define mpi_allreduce_        mpi_allreduce__
315 #define mpi_barrier_          mpi_barrier__
316 #define mpi_bcast_            mpi_bcast__
317 #define mpi_gather_           mpi_gather__
318 #define mpi_allgather_        mpi_allgather__
319 #define mpi_comm_split_       mpi_comm_split__
320 #define mpi_scan_             mpi_scan__
321 #define mpi_send_             mpi_send__
322 #define mpi_recv_             mpi_recv__
323 #define mpi_reduce_scatter_   mpi_reduce_scatter__
324 #define mpi_irecv_            mpi_irecv__
325 #define mpi_isend_            mpi_isend__
326 #define mpi_sendrecv_         mpi_sendrecv__
327 #define mpi_test_             mpi_test__
328 #define mpi_waitall_          mpi_waitall__
329 #define mpi_waitany_          mpi_waitany__
330 #define mpi_allgatherv_       mpi_allgatherv__
331 #define mpi_alltoallv_        mpi_alltoallv__
332 #define mpi_comm_create_      mpi_comm_create__
333 #define mpi_address_          mpi_address__
334 #define mpi_pack_             mpi_pack__
335 #define mpi_unpack_           mpi_unpack__
336 #define mpi_pack_size_        mpi_pack_size__
337 #define mpi_type_struct_      mpi_type_struct__
338 #define mpi_type_commit_      mpi_type_commit__
339 #define mpi_wtime_            mpi_wtime__
340 #define mpi_cancel_           mpi_cancel__
341 #define mpi_comm_dup_         mpi_comm_dup__
342 #define mpi_comm_free_        mpi_comm_free__
343 #define mpi_get_count_        mpi_get_count__
344 #define mpi_get_processor_name_ mpi_get_processor_name__
345 #define mpi_initialized_      mpi_initialized__
346 #define mpi_iprobe_           mpi_iprobe__
347 #define mpi_probe_            mpi_probe__
348 #define mpi_request_free_     mpi_request_free__
349 #define mpi_ssend_            mpi_ssend__
350 #define mpi_wait_             mpi_wait__
351 #define mpi_comm_group_       mpi_comm_group__
352 #define mpi_exscan_           mpi_exscan__
353 #endif
354 
355 
356 /* Do not build fortran interface if MPI namespace colision is to be avoided */
357 #if !defined(MPIUNI_AVOID_MPI_NAMESPACE)
358 
359 PETSC_EXTERN void PETSC_STDCALL   mpi_init_(int *ierr)
360 {
361   *ierr = MPI_Init((int*)0, (char***)0);
362 }
363 
364 PETSC_EXTERN void PETSC_STDCALL   mpi_finalize_(int *ierr)
365 {
366   *ierr = MPI_Finalize();
367 }
368 
369 PETSC_EXTERN void PETSC_STDCALL  mpi_comm_size_(MPI_Comm *comm,int *size,int *ierr)
370 {
371   *size = 1;
372   *ierr = 0;
373 }
374 
375 PETSC_EXTERN void PETSC_STDCALL  mpi_comm_rank_(MPI_Comm *comm,int *rank,int *ierr)
376 {
377   *rank = 0;
378   *ierr = MPI_SUCCESS;
379 }
380 
381 PETSC_EXTERN void PETSC_STDCALL  mpi_comm_split_(MPI_Comm *comm,int *color,int *key, MPI_Comm *newcomm, int *ierr)
382 {
383   *newcomm = *comm;
384   *ierr    = MPI_SUCCESS;
385 }
386 
387 PETSC_EXTERN void PETSC_STDCALL  mpi_abort_(MPI_Comm *comm,int *errorcode,int *ierr)
388 {
389   abort();
390   *ierr = MPI_SUCCESS;
391 }
392 
393 PETSC_EXTERN void PETSC_STDCALL  mpi_reduce_(void *sendbuf,void *recvbuf,int *count,int *datatype,int *op,int *root,int *comm,int *ierr)
394 {
395   *ierr = MPI_Reduce(sendbuf,recvbuf,*count,*datatype,*op,*root,*comm);
396 }
397 
398 PETSC_EXTERN void PETSC_STDCALL  mpi_allreduce_(void *sendbuf,void *recvbuf,int *count,int *datatype,int *op,int *comm,int *ierr)
399 {
400   *ierr = MPI_Allreduce(sendbuf,recvbuf,*count,*datatype,*op,*comm);
401 }
402 
403 PETSC_EXTERN void PETSC_STDCALL  mpi_barrier_(MPI_Comm *comm,int *ierr)
404 {
405   *ierr = MPI_SUCCESS;
406 }
407 
408 PETSC_EXTERN void PETSC_STDCALL  mpi_bcast_(void *buf,int *count,int *datatype,int *root,int *comm,int *ierr)
409 {
410   *ierr = MPI_SUCCESS;
411 }
412 
413 PETSC_EXTERN void PETSC_STDCALL  mpi_gather_(void *sendbuf,int *scount,int *sdatatype, void *recvbuf, int *rcount, int *rdatatype, int *root,int *comm,int *ierr)
414 {
415   *ierr = MPI_Gather(sendbuf,*scount,*sdatatype,recvbuf,rcount,rdatatype,*root,*comm);
416 }
417 
418 PETSC_EXTERN void PETSC_STDCALL  mpi_allgather_(void *sendbuf,int *scount,int *sdatatype, void *recvbuf, int *rcount, int *rdatatype,int *comm,int *ierr)
419 {
420   *ierr = MPI_Allgather(sendbuf,*scount,*sdatatype,recvbuf,rcount,rdatatype,*comm);
421 }
422 
423 PETSC_EXTERN void PETSC_STDCALL  mpi_scan_(void *sendbuf,void *recvbuf,int *count,int *datatype,int *op,int *comm,int *ierr)
424 {
425   *ierr = MPIUNI_Memcpy(recvbuf,sendbuf,(*count)*MPIUNI_DATASIZE[*datatype]);
426 }
427 
428 PETSC_EXTERN void PETSC_STDCALL  mpi_send_(void *buf,int *count,int *datatype,int *dest,int *tag,int *comm,int *ierr)
429 {
430   *ierr = MPI_Abort(MPI_COMM_WORLD,0);
431 }
432 
433 PETSC_EXTERN void PETSC_STDCALL  mpi_recv_(void *buf,int *count,int *datatype,int *source,int *tag,int *comm,int status,int *ierr)
434 {
435   *ierr = MPI_Abort(MPI_COMM_WORLD,0);
436 }
437 
438 PETSC_EXTERN void PETSC_STDCALL  mpi_reduce_scatter_(void *sendbuf,void *recvbuf,int *recvcounts,int *datatype,int *op,int *comm,int *ierr)
439 {
440   *ierr = MPI_Abort(MPI_COMM_WORLD,0);
441 }
442 
443 PETSC_EXTERN void PETSC_STDCALL  mpi_irecv_(void *buf,int *count, int *datatype, int *source, int *tag, int *comm, int *request, int *ierr)
444 {
445   *ierr = MPI_Abort(MPI_COMM_WORLD,0);
446 }
447 
448 PETSC_EXTERN void PETSC_STDCALL  mpi_isend_(void *buf,int *count,int *datatype,int *dest,int *tag,int *comm,int *request, int *ierr)
449 {
450   *ierr = MPI_Abort(MPI_COMM_WORLD,0);
451 }
452 
453 PETSC_EXTERN void PETSC_STDCALL  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)
454 {
455   *ierr = MPIUNI_Memcpy(recvbuf,sendbuf,(*sendcount)*MPIUNI_DATASIZE[*sendtype]);
456 }
457 
458 PETSC_EXTERN void PETSC_STDCALL  mpi_test_(int *request,int *flag,int *status,int *ierr)
459 {
460   *ierr = MPI_Abort(MPI_COMM_WORLD,0);
461 }
462 
463 PETSC_EXTERN void PETSC_STDCALL  mpi_waitall_(int *count,int *array_of_requests,int *array_of_statuses,int *ierr)
464 {
465   *ierr = MPI_SUCCESS;
466 }
467 
468 PETSC_EXTERN void PETSC_STDCALL  mpi_waitany_(int *count,int *array_of_requests,int * index, int *status,int *ierr)
469 {
470   *ierr = MPI_SUCCESS;
471 }
472 
473 PETSC_EXTERN void PETSC_STDCALL  mpi_allgatherv_(void *sendbuf,int *sendcount,int *sendtype,void *recvbuf,int *recvcounts,int *displs,int *recvtype,int *comm,int *ierr)
474 {
475   *ierr = MPI_Allgatherv(sendbuf,*sendcount,*sendtype,recvbuf,recvcounts,displs,*recvtype,*comm);
476 }
477 
478 PETSC_EXTERN void PETSC_STDCALL  mpi_alltoallv_(void *sendbuf,int *sendcounts,int *sdispls,int *sendtype,void *recvbuf,int *recvcounts,int *rdispls,int *recvtype,int *comm,int *ierr)
479 {
480   *ierr = MPI_Alltoallv(sendbuf,sendcounts,sdispls,*sendtype,recvbuf,recvcounts,rdispls,*recvtype,*comm);
481 }
482 
483 PETSC_EXTERN void PETSC_STDCALL  mpi_comm_create_(int *comm,int *group,int *newcomm,int *ierr)
484 {
485   *newcomm =  *comm;
486   *ierr    = MPI_SUCCESS;
487 }
488 
489 PETSC_EXTERN void PETSC_STDCALL  mpi_address_(void *location,MPIUNI_INTPTR *address,int *ierr)
490 {
491   *address =  (MPIUNI_INTPTR) location;
492   *ierr    = MPI_SUCCESS;
493 }
494 
495 PETSC_EXTERN void PETSC_STDCALL  mpi_pack_(void *inbuf,int *incount,int *datatype,void *outbuf,int *outsize,int *position,int *comm,int *ierr)
496 {
497   *ierr = MPI_Abort(MPI_COMM_WORLD,0);
498 }
499 
500 PETSC_EXTERN void PETSC_STDCALL  mpi_unpack_(void *inbuf,int *insize,int *position,void *outbuf,int *outcount,int *datatype,int *comm,int *ierr)
501 {
502   *ierr = MPI_Abort(MPI_COMM_WORLD,0);
503 }
504 
505 PETSC_EXTERN void PETSC_STDCALL  mpi_pack_size_(int *incount,int *datatype,int *comm,int *size,int *ierr)
506 {
507   *ierr = MPI_Abort(MPI_COMM_WORLD,0);
508 }
509 
510 PETSC_EXTERN void PETSC_STDCALL  mpi_type_struct_(int *count,int *array_of_blocklengths,int * array_of_displaments,int *array_of_types,int *newtype,int *ierr)
511 {
512   *ierr = MPI_Abort(MPI_COMM_WORLD,0);
513 }
514 
515 PETSC_EXTERN void PETSC_STDCALL  mpi_type_commit_(int *datatype,int *ierr)
516 {
517   *ierr = MPI_SUCCESS;
518 }
519 
520 double PETSC_STDCALL mpi_wtime_(void)
521 {
522   return 0.0;
523 }
524 
525 PETSC_EXTERN void PETSC_STDCALL  mpi_cancel_(int *request,int *ierr)
526 {
527   *ierr = MPI_SUCCESS;
528 }
529 
530 PETSC_EXTERN void PETSC_STDCALL  mpi_comm_dup_(int *comm,int *out,int *ierr)
531 {
532   *out  = *comm;
533   *ierr = MPI_SUCCESS;
534 }
535 
536 PETSC_EXTERN void PETSC_STDCALL  mpi_comm_free_(int *comm,int *ierr)
537 {
538   *ierr = MPI_SUCCESS;
539 }
540 
541 PETSC_EXTERN void PETSC_STDCALL  mpi_get_count_(int *status,int *datatype,int *count,int *ierr)
542 {
543   *ierr = MPI_Abort(MPI_COMM_WORLD,0);
544 }
545 
546 /* duplicate from fortranimpl.h */
547 #if defined(PETSC_HAVE_FORTRAN_MIXED_STR_ARG)
548 #define PETSC_MIXED_LEN(len) ,int len
549 #define PETSC_END_LEN(len)
550 #else
551 #define PETSC_MIXED_LEN(len)
552 #define PETSC_END_LEN(len)   ,int len
553 #endif
554 
555 PETSC_EXTERN void PETSC_STDCALL  mpi_get_processor_name_(char *name PETSC_MIXED_LEN(len),int *result_len,int *ierr PETSC_END_LEN(len))
556 {
557   MPIUNI_Memcpy(name,"localhost",9*sizeof(char));
558   *result_len = 9;
559   *ierr       = MPI_SUCCESS;
560 }
561 
562 PETSC_EXTERN void PETSC_STDCALL  mpi_initialized_(int *flag,int *ierr)
563 {
564   *flag = MPI_was_initialized;
565   *ierr = MPI_SUCCESS;
566 }
567 
568 PETSC_EXTERN void PETSC_STDCALL  mpi_iprobe_(int *source,int *tag,int *comm,int *glag,int *status,int *ierr)
569 {
570   *ierr = MPI_SUCCESS;
571 }
572 
573 PETSC_EXTERN void PETSC_STDCALL  mpi_probe_(int *source,int *tag,int *comm,int *flag,int *status,int *ierr)
574 {
575   *ierr = MPI_SUCCESS;
576 }
577 
578 PETSC_EXTERN void PETSC_STDCALL  mpi_request_free_(int *request,int *ierr)
579 {
580   *ierr = MPI_SUCCESS;
581 }
582 
583 PETSC_EXTERN void PETSC_STDCALL  mpi_ssend_(void *buf,int *count,int *datatype,int *dest,int *tag,int *comm,int *ierr)
584 {
585   *ierr = MPI_Abort(MPI_COMM_WORLD,0);
586 }
587 
588 PETSC_EXTERN void PETSC_STDCALL  mpi_wait_(int *request,int *status,int *ierr)
589 {
590   *ierr = MPI_SUCCESS;
591 }
592 
593 PETSC_EXTERN void PETSC_STDCALL  mpi_comm_group_(int *comm,int *group,int *ierr)
594 {
595   *ierr = MPI_SUCCESS;
596 }
597 
598 PETSC_EXTERN void PETSC_STDCALL  mpi_exscan_(void *sendbuf,void *recvbuf,int *count,int *datatype,int *op,int *comm,int *ierr)
599 {
600   *ierr = MPI_SUCCESS;
601 }
602 
603 #endif /* MPIUNI_AVOID_MPI_NAMESPACE */
604 
605 #if defined(__cplusplus)
606 }
607 #endif
608