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_LONG_DOUBLE     sizeof(long double)
113: #define MPI_CHAR            sizeof(char)
114: #define MPI_BYTE            sizeof(char)
115: #define MPI_INT             sizeof(int)
116: #define MPI_LONG            sizeof(long)
117: #define MPI_LONG_LONG_INT   sizeof(long long)
118: #define MPI_SHORT           sizeof(short)
119: #define MPI_UNSIGNED_SHORT  sizeof(unsigned short)
120: #define MPI_UNSIGNED        sizeof(unsigned)
121: #define MPI_UNSIGNED_CHAR   sizeof(unsigned char)
122: #define MPI_UNSIGNED_LONG   sizeof(unsigned long)
123: #define MPI_COMPLEX         2*sizeof(float)
124: #define MPI_DOUBLE_COMPLEX  2*sizeof(double)
125: #define MPI_FLOAT_INT       (sizeof(float) + sizeof(int))
126: #define MPI_DOUBLE_INT      (sizeof(double) + sizeof(int))
127: #define MPI_LONG_INT        (sizeof(long) + sizeof(int))
128: #define MPI_SHORT_INT       (sizeof(short) + sizeof(int))
129: #define MPI_2INT            (2* sizeof(int))

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

135: #define MPI_SUM           0
136: #define MPI_ANY_TAG     (-1)
137: #define MPI_DATATYPE_NULL 0

139: #define MPI_MAX_ERROR_STRING 2056
140: /*
141:   Prototypes of some functions which are implemented in mpi.c
142: */
143: typedef int   (MPI_Copy_function)(MPI_Comm,int,void *,void *,void *,int *);
144: typedef int   (MPI_Delete_function)(MPI_Comm,int,void *,void *);
145: typedef void  (MPI_User_function)(void*, void *, int *, MPI_Datatype *);

147: /*
148:   In order that the PETSc MPIUNI can be used with another package that has its
149:   own MPIUni we map the following function names to a unique PETSc name. Those functions
150:   are defined in mpi.c
151: */

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

174: #define MPI_Aint int
175: /* 
176:     Routines we have replace with macros that do nothing 
177:     Some return error codes others return success
178: */

180: #define MPI_Comm_f2c(comm) (MPI_Comm)(comm)
181: #define MPI_Comm_c2f(comm) (MPI_Fint)(comm)

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

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

623: #define MPI_NULL_COPY_FN   0
624: #define MPI_NULL_DELETE_FN 0

626: #if defined(__cplusplus)
627: }
628: #endif
629: #endif