Actual source code: mpi.h

  1: /*
  2:    This is a special set of bindings for uni-processor use of MPI by the PETSc library.
  3:  
  4:    NOT ALL THE MPI CALLS ARE IMPLEMENTED CORRECTLY! Only those needed in PETSc.

  6:    For example,
  7:    * Does not implement send to self.
  8:    * Does not implement attributes correctly.
  9: */

 11: /*
 12:   The following info is a response to one of the petsc-maint questions 
 13:   regarding MPIUNI.

 15:   MPIUNI was developed with the aim of getting PETSc compiled, and
 16:   usable in the absence of MPI. This is the reason each function is
 17:   not documented.  The development strategy was - to make enough
 18:   changes to it so that PETSc source compiles without errors, and runs
 19:   in the uni-processor mode.

 21:   Most PETSc objects have both sequential and parallel
 22:   implementations, which are separate. For eg: We have two types of
 23:   sparse matrix storage formats - SeqAIJ, and MPIAIJ. Some MPI
 24:   routines are used in the Seq part, but most of them are used in the
 25:   MPI part. The send/receive calls can be found mostly in the MPI
 26:   part.

 28:   When MPIUNI is used, only the Seq version of the PETSc objects are
 29:   used, even though the MPI variant of the objects are compiled. Since
 30:   there are no send/receive calls in the Seq variant, PETSc works fine
 31:   with MPIUNI in seq mode.

 33:   The reason some send/receive functions are defined to abort(), is to
 34:   detect sections of code that use send/receive functions, and gets
 35:   executed in the sequential mode. (which shouldn't happen in case of
 36:   PETSc).

 38:   One of the goals with MPIUNI, is to avoid the function call overhead
 39:   of a regular MPI implementation. If this was not the case, we could
 40:   as well have used a regular implementation of MPI as they are
 41:   available on almost all machines. Hence most of the functions are
 42:   implemented as macros. One of the additional benefits we got from
 43:   MPIUNI is, we were able to use PETSc on machines where using a
 44:   proper implementation of MPI was painful (for eg NT).

 46:   Proper implementation of send/receive would involve writing a
 47:   function for each of them. Inside each of these functions, we have
 48:   to check if the send is to self or receive is from self, and then
 49:   doing the buffering accordingly (until the receive is called) - or
 50:   what if a nonblocking receive is called, do a copy etc.. Handling
 51:   the buffering aspects might be complicated enough, that in this
 52:   case, a proper implementation of MPI might as well be used. This is
 53:   the reason the send to self is not implemented in MPIUNI, and never
 54:   will be.
 55: */


 60: /* Requred by abort() in mpi.c & for win64 */
 61: #include "petscconf.h"

 63: #if defined(__cplusplus)
 65: #endif

 67: /* require an int variable large enough to hold a pointer */
 68: #if !defined(MPIUNI_INTPTR)
 69: #define MPIUNI_INTPTR long
 70: #endif

 72: #define _petsc_mpi_uni

 74: /*

 76:     MPIUNI_TMP is used in the macros below only to stop various C/C++ compilers
 77: from generating warning messages about unused variables while compiling PETSc.
 78: */

 81: #define MPI_COMM_WORLD       1
 82: #define MPI_COMM_SELF        MPI_COMM_WORLD
 83: #define MPI_COMM_NULL        0
 84: #define MPI_SUCCESS          0
 85: #define MPI_IDENT            0
 86: #define MPI_CONGRUENT        0
 87: #define MPI_SIMILAR          0
 88: #define MPI_UNEQUAL          3
 89: #define MPI_ANY_SOURCE     (-2)
 90: #define MPI_KEYVAL_INVALID   0
 91: #define MPI_ERR_UNKNOWN     18
 92: #define MPI_ERR_INTERN      21
 93: #define MPI_ERR_OTHER        1
 94: #define MPI_TAG_UB           0
 95: #define MPI_ERRORS_RETURN    0

 97: /* External types */
 98: typedef int    MPI_Comm;
 99: typedef void   *MPI_Request;
100: typedef void   *MPI_Group;
101: typedef struct {int MPI_TAG,MPI_SOURCE,MPI_ERROR;} MPI_Status;
102: typedef char   *MPI_Errhandler;
103: typedef int    MPI_Fint;


107: /* In order to handle datatypes, we make them into "sizeof(raw-type)";
108:     this allows us to do the MPIUNI_Memcpy's easily */
109: #define MPI_Datatype        int
110: #define MPI_FLOAT           sizeof(float)
111: #define MPI_DOUBLE          sizeof(double)
112: #define MPI_CHAR            sizeof(char)
113: #define MPI_BYTE            sizeof(char)
114: #define MPI_INT             sizeof(int)
115: #define MPI_LONG            sizeof(long)
116: #define MPI_LONG_LONG_INT   sizeof(long long)
117: #define MPI_SHORT           sizeof(short)
118: #define MPI_UNSIGNED        sizeof(unsigned)
119: #define MPI_UNSIGNED_CHAR   sizeof(unsigned char)
120: #define MPI_UNSIGNED_LONG   sizeof(unsigned long)
121: #define MPI_COMPLEX         2*sizeof(float)
122: #define MPI_DOUBLE_COMPLEX  2*sizeof(double)
123: #define MPIU_PETSCLOGDOUBLE sizeof(PetscLogDouble)
124: #define MPI_FLOAT_INT       (sizeof(float) + sizeof(int))
125: #define MPI_DOUBLE_INT      (sizeof(double) + sizeof(int))
126: #define MPI_LONG_INT        (sizeof(long) + sizeof(int))
127: #define MPI_SHORT_INT       (sizeof(short) + sizeof(int))
128: #define MPI_2INT            (2* sizeof(int))

130: #define MPI_REQUEST_NULL    ((MPI_Request)0)
131: #define MPI_GROUP_NULL      ((MPI_Group)0)
132: typedef int MPI_Op;

134: #define MPI_SUM           0
135: #define MPI_ANY_TAG     (-1)
136: #define MPI_DATATYPE_NULL 0
137: /*
138:   Prototypes of some functions which are implemented in mpi.c
139: */
140: typedef int   (MPI_Copy_function)(MPI_Comm,int,void *,void *,void *,int *);
141: typedef int   (MPI_Delete_function)(MPI_Comm,int,void *,void *);
142: typedef void  (MPI_User_function)(void*, void *, int *, MPI_Datatype *);

144: /*
145:   In order that the PETSc MPIUNI can be used with another package that has its
146:   own MPIUni we map the following function names to a unique PETSc name. Those functions
147:   are defined in mpi.c
148: */

160: #define MPI_Abort         Petsc_MPI_Abort
161: #define MPI_Attr_get      Petsc_MPI_Attr_get
162: #define MPI_Keyval_free   Petsc_MPI_Keyval_free
163: #define MPI_Attr_put      Petsc_MPI_Attr_put
164: #define MPI_Attr_delete   Petsc_MPI_Attr_delete
165: #define MPI_Keyval_create Petsc_MPI_Keyval_create
166: #define MPI_Comm_free     Petsc_MPI_Comm_free
167: #define MPI_Initialized   Petsc_MPI_Initialized
168: #define MPI_Comm_dup      Petsc_MPI_Comm_dup
169: #define MPI_Finalize      Petsc_MPI_Finalize

171: #define MPI_Aint int
172: /* 
173:     Routines we have replace with macros that do nothing 
174:     Some return error codes others return success
175: */

177: #define MPI_Comm_f2c(comm) (MPI_Comm)(comm)
178: #define MPI_Comm_c2f(comm) (MPI_Fint)(comm)

180: #define MPI_Init(argc,argv) \
181:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (argc),\
182:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (argv),\
183:       MPI_SUCCESS)
184: #define MPI_Send(buf,count,datatype,dest,tag,comm)  \
185:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buf),\
186:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
187:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
188:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (dest),\
189:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (tag),\
190:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
191:       MPI_SUCCESS)
192: #define MPI_Recv(buf,count,datatype,source,tag,comm,status) \
193:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buf),\
194:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
195:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
196:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (source),\
197:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (tag),\
198:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
199:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (status),\
200:       MPI_Abort(MPI_COMM_WORLD,0))
201: #define MPI_Get_count(status, datatype,count) \
202:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (status),\
203:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
204:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
205:       MPI_Abort(MPI_COMM_WORLD,0))
206: #define MPI_Bsend(buf,count,datatype,dest,tag,comm)  \
207:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buf),\
208:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
209:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
210:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (dest),\
211:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (tag),\
212:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
213:       MPI_SUCCESS)
214: #define MPI_Ssend(buf,count, datatype,dest,tag,comm) \
215:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buf),\
216:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
217:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
218:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (dest),\
219:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (tag),\
220:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
221:       MPI_SUCCESS)
222: #define MPI_Rsend(buf,count, datatype,dest,tag,comm) \
223:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buf),\
224:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
225:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
226:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (dest),\
227:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (tag),\
228:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
229:       MPI_SUCCESS)
230: #define MPI_Buffer_attach(buffer,size) \
231:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buffer),\
232:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (size),\
233:       MPI_SUCCESS)
234: #define MPI_Buffer_detach(buffer,size)\
235:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buffer),\
236:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (size),\
237:       MPI_SUCCESS)
238: #define MPI_Ibsend(buf,count, datatype,dest,tag,comm,request) \
239:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buf),\
240:        MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
241:        MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
242:        MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (dest),\
243:        MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (tag),\
244:        MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
245:        MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (request),\
246:        MPI_SUCCESS)
247: #define MPI_Issend(buf,count, datatype,dest,tag,comm,request) \
248:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buf),\
249:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
250:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
251:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (dest),\
252:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (tag),\
253:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
254:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (request),\
255:       MPI_SUCCESS)
256: #define MPI_Irsend(buf,count, datatype,dest,tag,comm,request) \
257:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buf),\
258:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
259:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
260:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (dest),\
261:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (tag),\
262:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
263:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (request),\
264:       MPI_SUCCESS)
265: #define MPI_Irecv(buf,count, datatype,source,tag,comm,request) \
266:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buf),\
267:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
268:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
269:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (source),\
270:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (tag),\
271:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
272:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (request),\
273:       MPI_Abort(MPI_COMM_WORLD,0))
274: #define MPI_Isend(buf,count, datatype,dest,tag,comm,request) \
275:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buf),\
276:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
277:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
278:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (dest),\
279:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (tag),\
280:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
281:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (request),\
282:       MPI_Abort(MPI_COMM_WORLD,0))
283: #define MPI_Wait(request,status) \
284:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (request),\
285:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (status),\
286:       MPI_SUCCESS)
287: #define MPI_Test(request,flag,status) \
288:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (request),\
289:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (status),\
290:       *(flag) = 0, \
291:       MPI_SUCCESS)
292: #define MPI_Request_free(request) \
293:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (request),\
294:       MPI_SUCCESS)
295: #define MPI_Waitany(a,b,c,d) \
296:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (a),\
297:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (b),\
298:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (c),\
299:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (d),\
300:       MPI_SUCCESS)
301: #define MPI_Testany(a,b,c,d,e) \
302:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (a),\
303:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (b),\
304:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (c),\
305:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (d),\
306:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (e),\
307:       MPI_SUCCESS)
308: #define MPI_Waitall(count,array_of_requests,array_of_statuses) \
309:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
310:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (array_of_requests),\
311:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (array_of_statuses),\
312:       MPI_SUCCESS)
313: #define MPI_Testall(count,array_of_requests,flag,array_of_statuses) \
314:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
315:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (array_of_requests),\
316:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (flag),\
317:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (array_of_statuses),\
318:       MPI_SUCCESS)
319: #define MPI_Waitsome(incount,array_of_requests,outcount,\
320:                      array_of_indices,array_of_statuses) \
321:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (incount),\
322:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (array_of_requests),\
323:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (outcount),\
324:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (array_of_indices),\
325:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (array_of_statuses),\
326:       MPI_SUCCESS)
327: #define MPI_Comm_group(comm,group) \
328:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
329:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (group),\
330:       MPI_SUCCESS)
331: #define MPI_Group_incl(group,n,ranks,newgroup) \
332:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (group),\
333:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (n),\
334:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (ranks),\
335:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (newgroup),\
336:       MPI_SUCCESS)
337: #define MPI_Testsome(incount,array_of_requests,outcount,\
338:                      array_of_indices,array_of_statuses) MPI_SUCCESS
339: #define MPI_Iprobe(source,tag,comm,flag,status) (*(flag)=0, MPI_SUCCESS)
340: #define MPI_Probe(source,tag,comm,status) MPI_SUCCESS
341: #define MPI_Cancel(request) (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (request),MPI_SUCCESS)
342: #define MPI_Test_cancelled(status,flag) (*(flag)=0,MPI_SUCCESS)
343: #define MPI_Send_init(buf,count, datatype,dest,tag,comm,request) \
344:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buf),\
345:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
346:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
347:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (dest),\
348:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (tag),\
349:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
350:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (request),\
351:      MPI_SUCCESS)
352: #define MPI_Bsend_init(buf,count, datatype,dest,tag,comm,request) \
353:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buf),\
354:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
355:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
356:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (dest),\
357:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (tag),\
358:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
359:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (request),\
360:      MPI_SUCCESS)
361: #define MPI_Ssend_init(buf,count, datatype,dest,tag,comm,request) \
362:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buf),\
363:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
364:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
365:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (dest),\
366:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (tag),\
367:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
368:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (request),\
369:      MPI_SUCCESS)
370: #define MPI_Bsend_init(buf,count, datatype,dest,tag,comm,request) \
371:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buf),\
372:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
373:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
374:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (dest),\
375:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (tag),\
376:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
377:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (request),\
378:      MPI_SUCCESS)
379: #define MPI_Rsend_init(buf,count, datatype,dest,tag,comm,request) \
380:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buf),\
381:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
382:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
383:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (dest),\
384:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (tag),\
385:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
386:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (request),\
387:      MPI_SUCCESS)
388: #define MPI_Recv_init(buf,count, datatype,source,tag,comm,request) \
389:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buf),\
390:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
391:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
392:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (source),\
393:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (tag),\
394:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
395:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (request),\
396:      MPI_SUCCESS)
397: #define MPI_Start(request) (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (request),MPI_SUCCESS)
398: #define MPI_Startall(count,array_of_requests) \
399:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
400:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (array_of_requests),\
401:      MPI_SUCCESS)
402: #define MPI_Op_create(function,commute,op) \
403:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (function),\
404:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (commute),\
405:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (op),\
406:      MPI_SUCCESS)
407: #define MPI_Op_free(op) \
408:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (op),\
409:      MPI_SUCCESS)
410:      /* Need to determine sizeof "sendtype" */
411: #define MPI_Sendrecv(sendbuf,sendcount, sendtype,\
412:      dest,sendtag,recvbuf,recvcount,\
413:      recvtype,source,recvtag,\
414:      comm,status) \
415:      MPIUNI_Memcpy(recvbuf,sendbuf,(sendcount) * (sendtype))
416: #define MPI_Sendrecv_replace(buf,count, datatype,dest,sendtag,\
417:      source,recvtag,comm,status) MPI_SUCCESS
418: #define MPI_Type_contiguous(count, oldtype,newtype) \
419:      (*(newtype) = (count)*(oldtype),MPI_SUCCESS)
420: #define MPI_Type_vector(count,blocklength,stride,oldtype, newtype) MPI_SUCCESS
421: #define MPI_Type_hvector(count,blocklength,stride,oldtype, newtype) MPI_SUCCESS
422: #define MPI_Type_indexed(count,array_of_blocklengths,\
423:      array_of_displacements, oldtype,\
424:      newtype) MPI_SUCCESS
425: #define MPI_Type_hindexed(count,array_of_blocklengths,\
426:      array_of_displacements, oldtype,\
427:      newtype) MPI_SUCCESS
428: #define MPI_Type_struct(count,array_of_blocklengths,\
429:      array_of_displacements,\
430:      array_of_types, newtype) MPI_SUCCESS
431: #define MPI_Address(location,address) \
432:      (*(address) = (MPIUNI_INTPTR)(char *)(location),MPI_SUCCESS)
433: #define MPI_Type_extent(datatype,extent) \
434:      MPI_Abort(MPI_COMM_WORLD,0)
435: #define MPI_Type_size(datatype,size) \
436:      MPI_Abort(MPI_COMM_WORLD,0)
437: #define MPI_Type_lb(datatype,displacement) \
438:      MPI_Abort(MPI_COMM_WORLD,0)
439: #define MPI_Type_ub(datatype,displacement) \
440:      MPI_Abort(MPI_COMM_WORLD,0)
441: #define MPI_Type_commit(datatype) (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
442:      MPI_SUCCESS)
443: #define MPI_Type_free(datatype) MPI_SUCCESS
444: #define MPI_Get_elements(status, datatype,count) \
445:      MPI_Abort(MPI_COMM_WORLD,0)
446: #define MPI_Pack(inbuf,incount, datatype,outbuf,\
447:      outsize,position, comm) \
448:      MPI_Abort(MPI_COMM_WORLD,0)
449: #define MPI_Unpack(inbuf,insize,position,outbuf,\
450:      outcount, datatype,comm) \
451:      MPI_Abort(MPI_COMM_WORLD,0)
452: #define MPI_Pack_size(incount, datatype,comm,size) \
453:      MPI_Abort(MPI_COMM_WORLD,0)
454: #define MPI_Barrier(comm) \
455:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
456:      MPI_SUCCESS)
457: #define MPI_Bcast(buffer,count,datatype,root,comm) \
458:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (buffer),\
459:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (count),\
460:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (datatype),\
461:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
462:      MPI_SUCCESS)
463: #define MPI_Gather(sendbuf,sendcount, sendtype,\
464:      recvbuf,recvcount, recvtype,\
465:      root,comm) \
466:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (recvcount),\
467:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (root),\
468:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (recvtype),\
469:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
470:      MPIUNI_Memcpy(recvbuf,sendbuf,(sendcount)* (sendtype)),\
471:      MPI_SUCCESS)
472: #define MPI_Gatherv(sendbuf,sendcount, sendtype,\
473:      recvbuf,recvcounts,displs,\
474:      recvtype,root,comm) \
475:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (recvcounts),\
476:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (displs),\
477:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (recvtype),\
478:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (root),\
479:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
480:      MPIUNI_Memcpy(recvbuf,sendbuf,(sendcount)* (sendtype)),\
481:      MPI_SUCCESS)
482: #define MPI_Scatter(sendbuf,sendcount, sendtype,\
483:      recvbuf,recvcount, recvtype,\
484:      root,comm) \
485:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (sendbuf),\
486:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (sendcount),\
487:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (sendtype),\
488:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (recvbuf),\
489:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (recvcount),\
490:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (recvtype),\
491:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (root),\
492:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),MPI_Abort(MPI_COMM_WORLD,0))
493: #define MPI_Scatterv(sendbuf,sendcounts,displs,\
494:      sendtype, recvbuf,recvcount,\
495:      recvtype,root,comm) \
496:      (MPIUNI_Memcpy(recvbuf,sendbuf,(recvcount)*(recvtype)),\
497:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (displs),\
498:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (sendtype),\
499:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (sendcounts),\
500:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (root),\
501:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
502:      MPI_SUCCESS)
503: #define MPI_Allgather(sendbuf,sendcount, sendtype,\
504:      recvbuf,recvcount, recvtype,comm) \
505:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (recvcount),\
506:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (recvtype),\
507:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
508:      MPIUNI_Memcpy(recvbuf,sendbuf,(sendcount)* (sendtype)),\
509:      MPI_SUCCESS)
510: #define MPI_Allgatherv(sendbuf,sendcount, sendtype,\
511:      recvbuf,recvcounts,displs,recvtype,comm) \
512:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (recvcounts),\
513:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (displs),\
514:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (recvtype),\
515:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
516:      MPIUNI_Memcpy(recvbuf,sendbuf,(sendcount)* (sendtype)),\
517:      MPI_SUCCESS)
518: #define MPI_Alltoall(sendbuf,sendcount, sendtype,\
519:      recvbuf,recvcount, recvtype,comm) \
520:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (recvcount),\
521:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (recvtype),\
522:       MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
523:       MPIUNI_Memcpy(recvbuf,sendbuf,(sendcount)* (sendtype)),\
524:       MPI_SUCCESS)
525: #define MPI_Alltoallv(sendbuf,sendcounts,sdispls,\
526:      sendtype, recvbuf,recvcounts,\
527:      rdispls, recvtype,comm) MPI_Abort(MPI_COMM_WORLD,0)
528: #define MPI_Reduce(sendbuf, recvbuf,count,\
529:      datatype,op,root,comm) \
530:      (MPIUNI_Memcpy(recvbuf,sendbuf,(count)*(datatype)),\
531:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),MPI_SUCCESS)
532: #define MPI_Allreduce(sendbuf, recvbuf,count,datatype,op,comm) \
533:      (MPIUNI_Memcpy(recvbuf,sendbuf,(count)*(datatype)),\
534:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),MPI_SUCCESS)
535: #define MPI_Scan(sendbuf, recvbuf,count,datatype,op,comm) \
536:      (MPIUNI_Memcpy(recvbuf,sendbuf,(count)*(datatype)),\
537:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),MPI_SUCCESS)
538: #define MPI_Reduce_scatter(sendbuf, recvbuf,recvcounts,\
539:      datatype,op,comm) \
540:      MPI_Abort(MPI_COMM_WORLD,0)
541: #define MPI_Group_size(group,size) (*(size)=1,MPI_SUCCESS)
542: #define MPI_Group_rank(group,rank) (*(rank)=0,MPI_SUCCESS)
543: #define MPI_Group_translate_ranks (group1,n,ranks1,\
544:      group2,ranks2) MPI_Abort(MPI_COMM_WORLD,0)
545: #define MPI_Group_compare(group1,group2,result) \
546:      (*(result)=1,MPI_SUCCESS)
547: #define MPI_Group_union(group1,group2,newgroup) MPI_SUCCESS
548: #define MPI_Group_intersection(group1,group2,newgroup) MPI_SUCCESS
549: #define MPI_Group_difference(group1,group2,newgroup) MPI_SUCCESS
550: #define MPI_Group_excl(group,n,ranks,newgroup) MPI_SUCCESS
551: #define MPI_Group_range_incl(group,n,ranges,newgroup) MPI_SUCCESS
552: #define MPI_Group_range_excl(group,n,ranges,newgroup) MPI_SUCCESS
553: #define MPI_Group_free(group) \
554:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (group),\
555:      MPI_SUCCESS)
556: #define MPI_Comm_size(comm,size) \
557:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
558:      *(size)=1,\
559:      MPI_SUCCESS)
560: #define MPI_Comm_rank(comm,rank) \
561:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
562:      *(rank)=0,\
563:      MPI_SUCCESS)
564: #define MPI_Comm_compare(comm1,comm2,result) \
565:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm1),\
566:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm2),\
567:      *(result)=MPI_IDENT,\
568:      MPI_SUCCESS)
569: #define MPI_Comm_create(comm,group,newcomm)  \
570:      (*(newcomm) =  (comm),\
571:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (group),\
572:      MPI_SUCCESS)
573: #define MPI_Comm_split(comm,color,key,newcomm) MPI_SUCCESS
574: #define MPI_Comm_test_inter(comm,flag) (*(flag)=1,MPI_SUCCESS)
575: #define MPI_Comm_remote_size(comm,size) (*(size)=1,MPI_SUCCESS)
576: #define MPI_Comm_remote_group(comm,group) MPI_SUCCESS
577: #define MPI_Intercomm_create(local_comm,local_leader,peer_comm,\
578:      remote_leader,tag,newintercomm) MPI_SUCCESS
579: #define MPI_Intercomm_merge(intercomm,high,newintracomm) MPI_SUCCESS

581: #define MPI_Topo_test(comm,status) MPI_SUCCESS
582: #define MPI_Cart_create(comm_old,ndims,dims,periods,\
583:      reorder,comm_cart) MPI_SUCCESS
584: #define MPI_Dims_create(nnodes,ndims,dims) MPI_Abort(MPI_COMM_WORLD,0)
585: #define MPI_Graph_create(comm,a,b,c,d,e) MPI_SUCCESS
586: #define MPI_Graphdims_Get(comm,nnodes,nedges) MPI_Abort(MPI_COMM_WORLD,0)
587: #define MPI_Graph_get(comm,a,b,c,d) MPI_Abort(MPI_COMM_WORLD,0)
588: #define MPI_Cartdim_get(comm,ndims) MPI_Abort(MPI_COMM_WORLD,0)
589: #define MPI_Cart_get(comm,maxdims,dims,periods,coords) \
590:      MPI_Abort(MPI_COMM_WORLD,0)
591: #define MPI_Cart_rank(comm,coords,rank) MPI_Abort(MPI_COMM_WORLD,0)
592: #define MPI_Cart_coords(comm,rank,maxdims,coords) \
593:      MPI_Abort(MPI_COMM_WORLD,0)
594: #define MPI_Graph_neighbors_count(comm,rank,nneighbors) \
595:      MPI_Abort(MPI_COMM_WORLD,0)
596: #define MPI_Graph_neighbors(comm,rank,maxneighbors,neighbors) \
597:      MPI_Abort(MPI_COMM_WORLD,0)
598: #define MPI_Cart_shift(comm,direction,disp,rank_source,rank_dest) \
599:      MPI_Abort(MPI_COMM_WORLD,0)
600: #define MPI_Cart_sub(comm,remain_dims,newcomm) MPI_Abort(MPI_COMM_WORLD,0)
601: #define MPI_Cart_map(comm,ndims,dims,periods,newrank) MPI_Abort(MPI_COMM_WORLD,0)
602: #define MPI_Graph_map(comm,a,b,c,d) MPI_Abort(MPI_COMM_WORLD,0)
603: #define MPI_Get_processor_name(name,result_len) \
604:      (MPIUNI_Memcpy(name,"localhost",9*sizeof(char)),name[10] = 0,*(result_len) = 10)
605: #define MPI_Errhandler_create(function,errhandler) \
606:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (errhandler),\
607:      MPI_SUCCESS)
608: #define MPI_Errhandler_set(comm,errhandler) \
609:      (MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (comm),\
610:      MPIUNI_TMP = (void*)(MPIUNI_INTPTR) (errhandler),\
611:      MPI_SUCCESS)
612: #define MPI_Errhandler_get(comm,errhandler) MPI_SUCCESS
613: #define MPI_Errhandler_free(errhandler) MPI_SUCCESS
614: #define MPI_Error_string(errorcode,string,result_len) MPI_SUCCESS
615: #define MPI_Error_class(errorcode,errorclass) MPI_SUCCESS
616: #define MPI_Wtick() 1.0
617: #define MPI_Wtime() 0.0
618: #define MPI_Pcontrol(level) MPI_SUCCESS

620: #define MPI_NULL_COPY_FN   0
621: #define MPI_NULL_DELETE_FN 0

623: #if defined(__cplusplus)
624: }
625: #endif
626: #endif