Actual source code: mpi.h

petsc-3.10.4 2019-02-26
Report Typos and Errors
  1: /*
  2:    This is a special set of bindings for uni-processor use of MPI by the PETSc library.

  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 a full MPI implementation. With this, we
 17:   were able to provide PETSc on Windows, Windows64 even before any MPI
 18:   implementation was available on these platforms. [Or with certain
 19:   compilers - like borland, that do not have a usable MPI
 20:   implementation]

 22:   However - providing a seqential, standards compliant MPI
 23:   implementation is *not* the goal of MPIUNI. The development strategy
 24:   was - to make enough changes to it so that PETSc sources, examples
 25:   compile without errors, and runs in the uni-processor mode. This is
 26:   the reason each function is not documented.

 28:   PETSc usage of MPIUNI is primarily from C. However a minimal fortran
 29:   interface is also provided - to get PETSc fortran examples with a
 30:   few MPI calls working.

 32:   One of the optimzation with MPIUNI, is to avoid the function call
 33:   overhead, when possible. Hence most of the C functions are
 34:   implemented as macros. However the function calls cannot be avoided
 35:   with fortran usage.

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

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

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

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

 64:   Proper implementations of MPI [for eg: MPICH & OpenMPI] are
 65:   available for most machines. When these packages are available, Its
 66:   generally preferable to use one of them instead of MPIUNI - even if
 67:   the user is using PETSc sequentially.

 69:     - MPIUNI does not support all MPI functions [or functionality].
 70:     Hence it might not work with external packages or user code that
 71:     might have MPI calls in it.

 73:     - MPIUNI is not a standards compliant implementation for np=1.
 74:     For eg: if the user code has send/recv to self, then it will
 75:     abort. [Similar issues with a number of other MPI functionality]
 76:     However MPICH & OpenMPI are the correct implementations of MPI
 77:     standard for np=1.

 79:     - When user code uses multiple MPI based packages that have their
 80:     own *internal* stubs equivalent to MPIUNI - in sequential mode,
 81:     invariably these multiple implementations of MPI for np=1 conflict
 82:     with each other. The correct thing to do is: make all such
 83:     packages use the *same* MPI implementation for np=1. MPICH/OpenMPI
 84:     satisfy this requirement correctly [and hence the correct choice].

 86:     - Using MPICH/OpenMPI sequentially should have minimal
 87:     disadvantages. [for eg: these binaries can be run without
 88:     mpirun/mpiexec as ./executable, without requiring any extra
 89:     configurations for ssh/rsh/daemons etc..]. This should not be a
 90:     reason to avoid these packages for sequential use.

 92:     Instructions for building standalone MPIUNI [for eg: linux/gcc+gfortran]:
 93:     - extract include/mpiuni/mpi.h,mpif.f, src/sys/mpiuni/mpi.c from PETSc
 94:     - remove reference to petscconf.h from mpi.h
 95:     - gcc -c mpi.c -DPETSC_HAVE_STDLIB_H -DPETSC_HAVE_FORTRAN_UNDERSCORE
 96:     - ar cr libmpiuni.a mpi.o

 98: */


103: /* Required by abort() in mpi.c & for win64 */
104: #include <petscconf.h>
105: #include <stddef.h>

107: /*  This is reproduced from petscsys.h so that mpi.h can be used standalone without first including petscsys.h */
108: #if defined(_WIN32) && defined(PETSC_USE_SHARED_LIBRARIES)
109: #  define MPIUni_ __declspec(dllexport)
110: #  define MPIUni_PETSC_DLLIMPORT __declspec(dllimport)
111: #elif defined(PETSC_USE_VISIBILITY_CXX) && defined(__cplusplus)
112: #  define MPIUni_ __attribute__((visibility ("default")))
113: #  define MPIUni_PETSC_DLLIMPORT __attribute__((visibility ("default")))
114: #elif defined(PETSC_USE_VISIBILITY_C) && !defined(__cplusplus)
115: #  define MPIUni_ __attribute__((visibility ("default")))
116: #  define MPIUni_PETSC_DLLIMPORT __attribute__((visibility ("default")))
117: #else
118: #  define MPIUni_
119: #  define MPIUni_PETSC_DLLIMPORT
120: #endif

122: #if defined(petsc_EXPORTS)
123: #  define MPIUni_PETSC_VISIBILITY_PUBLIC MPIUni_
124: #else  /* Win32 users need this to import symbols from petsc.dll */
125: #  define MPIUni_PETSC_VISIBILITY_PUBLIC MPIUni_PETSC_DLLIMPORT
126: #endif

128: #if defined(__cplusplus)
129: #define MPIUni_PETSC_EXTERN extern "C" MPIUni_PETSC_VISIBILITY_PUBLIC
130: #else
131: #define MPIUni_PETSC_EXTERN extern MPIUni_PETSC_VISIBILITY_PUBLIC
132: #endif

134: #if defined(__cplusplus)
135: extern "C" {
136: #endif

138: /* MPI_Aint has to be an signed integral type large enough to hold a pointer */
139: #if PETSC_SIZEOF_INT == PETSC_SIZEOF_VOID_P
140: typedef int MPI_Aint;
141: #elif PETSC_SIZEOF_LONG == PETSC_SIZEOF_VOID_P
142: typedef long MPI_Aint;
143: #else
144: typedef ptrdiff_t MPI_Aint;
145: #endif

147: /* old 32bit MS compiler does not support long long */
148: #if defined(PETSC_SIZEOF_LONG_LONG)
149: typedef long long MPIUNI_INT64;
150: typedef unsigned long long MPIUNI_UINT64;
151: #elif defined(PETSC_HAVE___INT64)
152: typedef _int64 MPIUNI_INT64;
153: typedef unsigned _int64 MPIUNI_UINT64;
154: #else
155: #error "cannot determine MPIUNI_INT64, MPIUNI_UINT64 types"
156: #endif

158: /*

160:  MPIUNI_ARG is used in the macros below only to stop various C/C++ compilers
161:  from generating warning messages about unused variables while compiling PETSc.
162: */
163: MPIUni_PETSC_EXTERN void *MPIUNI_TMP;
164: #define MPIUNI_ARG(arg) (MPIUNI_TMP = (void *)(MPI_Aint) (arg))

166: #define MPI_IDENT            0
167: #define MPI_CONGRUENT        1
168: #define MPI_SIMILAR          2
169: #define MPI_UNEQUAL          3

171: #define MPI_BOTTOM   ((void *) 0)
172: #define MPI_IN_PLACE ((void *)-1)

174: #define MPI_PROC_NULL      (-1)
175: #define MPI_ANY_SOURCE     (-2)
176: #define MPI_ANY_TAG        (-1)
177: #define MPI_UNDEFINED  (-32766)

179: #define MPI_SUCCESS          0
180: #define MPI_ERR_OTHER       17
181: #define MPI_ERR_UNKNOWN     18
182: #define MPI_ERR_INTERN      21

184: #define MPI_KEYVAL_INVALID   0
185: #define MPI_TAG_UB           0

187: #define MPI_MAX_PROCESSOR_NAME 1024
188: #define MPI_MAX_ERROR_STRING   2056

190: typedef int MPI_Comm;
191: #define MPI_COMM_NULL  0
192: #define MPI_COMM_SELF  1
193: #define MPI_COMM_WORLD 2
194: #define MPI_COMM_TYPE_SHARED 1

196: typedef int MPI_Info;
197: #define MPI_INFO_NULL 0

199: typedef struct {int MPI_SOURCE,MPI_TAG,MPI_ERROR;} MPI_Status;
200: #define MPI_STATUS_IGNORE   (MPI_Status *)0
201: #define MPI_STATUSES_IGNORE (MPI_Status *)0

203: /* 32-bit packing scheme: [combiner:4 | type-index:8 | count:12 | base-bytes:8] */
204: /* Any changes here must also be reflected in mpif.h */
205: typedef int MPI_Datatype;
206: #define MPI_DATATYPE_NULL      0
207: #define MPI_PACKED             0

209: #define MPI_FLOAT              (1 << 20 | 1 << 8 | (int)sizeof(float))
210: #define MPI_DOUBLE             (1 << 20 | 1 << 8 | (int)sizeof(double))
211: #define MPI_LONG_DOUBLE        (1 << 20 | 1 << 8 | (int)sizeof(long double))

213: #define MPI_COMPLEX            (2 << 20 | 1 << 8 | 2*(int)sizeof(float))
214: #define MPI_C_COMPLEX          (2 << 20 | 1 << 8 | 2*(int)sizeof(float))
215: #define MPI_C_FLOAT_COMPLEX    (2 << 20 | 1 << 8 | 2*(int)sizeof(float))
216: #define MPI_DOUBLE_COMPLEX     (2 << 20 | 1 << 8 | 2*(int)sizeof(double))
217: #define MPI_C_DOUBLE_COMPLEX   (2 << 20 | 1 << 8 | 2*(int)sizeof(double))

219: #define MPI_CHAR               (3 << 20 | 1 << 8 | (int)sizeof(char))
220: #define MPI_BYTE               (3 << 20 | 1 << 8 | (int)sizeof(char))
221: #define MPI_SIGNED_CHAR        (3 << 20 | 1 << 8 | (int)sizeof(signed char))
222: #define MPI_UNSIGNED_CHAR      (3 << 20 | 1 << 8 | (int)sizeof(unsigned char))

224: #define MPI_SHORT              (4 << 20 | 1 << 8 | (int)sizeof(short))
225: #define MPI_INT                (4 << 20 | 1 << 8 | (int)sizeof(int))
226: #define MPI_LONG               (4 << 20 | 1 << 8 | (int)sizeof(long))
227: #define MPI_LONG_LONG          (4 << 20 | 1 << 8 | (int)sizeof(MPIUNI_INT64))
228: #define MPI_LONG_LONG_INT      MPI_LONG_LONG
229: #define MPI_INTEGER8           MPI_LONG_LONG

231: #define MPI_UNSIGNED_SHORT     (5 << 20 | 1 << 8 | (int)sizeof(unsigned short))
232: #define MPI_UNSIGNED           (5 << 20 | 1 << 8 | (int)sizeof(unsigned))
233: #define MPI_UNSIGNED_LONG      (5 << 20 | 1 << 8 | (int)sizeof(unsigned long))
234: #define MPI_UNSIGNED_LONG_LONG (5 << 20 | 1 << 8 | (int)sizeof(MPIUNI_UINT64))

236: #define MPI_FLOAT_INT          (10 << 20 | 1 << 8 | (int)(sizeof(float) + sizeof(int)))
237: #define MPI_DOUBLE_INT         (11 << 20 | 1 << 8 | (int)(sizeof(double) + sizeof(int)))
238: #define MPI_LONG_INT           (12 << 20 | 1 << 8 | (int)(sizeof(long) + sizeof(int)))
239: #define MPI_SHORT_INT          (13 << 20 | 1 << 8 | (int)(sizeof(short) + sizeof(int)))
240: #define MPI_2INT               (14 << 20 | 1 << 8 | (int)(2*sizeof(int)))

242: /* Fortran datatypes; Jed Brown says they should be defined here */
243: #define MPI_INTEGER MPI_INT
244: #define MPI_DOUBLE_PRECISION MPI_DOUBLE
245: #define MPI_COMPLEX16 MPI_C_DOUBLE_COMPLEX

247: #define MPI_ORDER_C            0
248: #define MPI_ORDER_FORTRAN      1

250: #define MPI_sizeof_default(datatype) ((((datatype) >> 8) & 0xfff) * ((datatype) & 0xff))
251: #if defined(PETSC_USE_REAL___FP16)
252: MPIUni_PETSC_EXTERN MPI_Datatype MPIU___FP16;
253: #define MPI_sizeof(datatype) ((datatype == MPIU___FP16) ? (int)(2*sizeof(char)) : MPI_sizeof_default(datatype))
254: #elif defined(PETSC_USE_REAL___FLOAT128)
255: MPIUni_PETSC_EXTERN MPI_Datatype MPIU___FLOAT128;
256: #define MPI_sizeof(datatype) ((datatype == MPIU___FLOAT128) ? (int)(2*sizeof(double)) : MPI_sizeof_default(datatype))
257: #else
258: #define MPI_sizeof(datatype) (MPI_sizeof_default(datatype))
259: #endif

261: MPIUni_PETSC_EXTERN int MPIUNI_Memcpy(void*,const void*,int);

263: typedef int MPI_Request;
264: #define MPI_REQUEST_NULL 0

266: typedef int MPI_Group;
267: #define MPI_GROUP_NULL  0
268: #define MPI_GROUP_EMPTY 0

270: typedef int MPI_Op;
271: #define MPI_OP_NULL    0
272: #define MPI_SUM        1
273: #define MPI_MAX        2
274: #define MPI_MIN        3
275: #define MPI_REPLACE    4
276: #define MPI_PROD       5
277: #define MPI_LAND       6
278: #define MPI_BAND       7
279: #define MPI_LOR        8
280: #define MPI_BOR        9
281: #define MPI_LXOR       10
282: #define MPI_BXOR       11
283: #define MPI_MAXLOC     12
284: #define MPI_MINLOC     13

286: typedef void (MPI_User_function)(void*, void *, int *, MPI_Datatype *);

288: typedef int MPI_Errhandler;
289: #define MPI_ERRHANDLER_NULL  0
290: #define MPI_ERRORS_RETURN    0
291: #define MPI_ERRORS_ARE_FATAL 0
292: typedef void (MPI_Handler_function)(MPI_Comm *, int *, ...);

294: /*
295:   Prototypes of some functions which are implemented in mpi.c
296: */
297: typedef int (MPI_Copy_function)(MPI_Comm,int,void *,void *,void *,int *);
298: typedef int (MPI_Delete_function)(MPI_Comm,int,void *,void *);
299: #define MPI_NULL_COPY_FN   (MPI_Copy_function*)0
300: #define MPI_NULL_DELETE_FN (MPI_Delete_function*)0

302: /*
303:   To enable linking PETSc+MPIUNI with any other package that might have its
304:   own MPIUNI (equivalent implementation) we need to avoid using 'MPI'
305:   namespace for MPIUNI functions that go into the petsc library.

307:   For C functions below (that get compiled into petsc library) - we map
308:   the 'MPI' functions to use 'Petsc_MPI' namespace.

310:   With fortran we use similar mapping - thus requiring the use of
311:   c-preprocessor with mpif.h
312: */
313: #define MPI_Abort         Petsc_MPI_Abort
314: #define MPIUni_Abort      Petsc_MPIUni_Abort
315: #define MPI_Attr_get      Petsc_MPI_Attr_get
316: #define MPI_Keyval_free   Petsc_MPI_Keyval_free
317: #define MPI_Attr_put      Petsc_MPI_Attr_put
318: #define MPI_Attr_delete   Petsc_MPI_Attr_delete
319: #define MPI_Keyval_create Petsc_MPI_Keyval_create
320: #define MPI_Comm_free     Petsc_MPI_Comm_free
321: #define MPI_Comm_dup      Petsc_MPI_Comm_dup
322: #define MPI_Comm_create   Petsc_MPI_Comm_create
323: #define MPI_Init          Petsc_MPI_Init
324: #define MPI_Finalize      Petsc_MPI_Finalize
325: #define MPI_Initialized   Petsc_MPI_Initialized
326: #define MPI_Finalized     Petsc_MPI_Finalized
327: #define MPI_Comm_size     Petsc_MPI_Comm_size
328: #define MPI_Comm_rank     Petsc_MPI_Comm_rank
329: #define MPI_Wtime         Petsc_MPI_Wtime
330: #define MPI_Type_get_envelope Petsc_MPI_Type_get_envelope
331: #define MPI_Type_get_contents Petsc_MPI_Type_get_contents
332: #define MPI_Add_error_class   Petsc_MPI_Add_error_class
333: #define MPI_Add_error_code    Petsc_MPI_Add_error_code

335: /* identical C bindings */
336: #define MPI_Comm_copy_attr_function   MPI_Copy_function
337: #define MPI_Comm_delete_attr_function MPI_Delete_function
338: #define MPI_COMM_NULL_COPY_FN         MPI_NULL_COPY_FN
339: #define MPI_COMM_NULL_DELETE_FN       MPI_NULL_DELETE_FN
340: #define MPI_Comm_create_keyval        Petsc_MPI_Keyval_create
341: #define MPI_Comm_free_keyval          Petsc_MPI_Keyval_free
342: #define MPI_Comm_get_attr             Petsc_MPI_Attr_get
343: #define MPI_Comm_set_attr             Petsc_MPI_Attr_put
344: #define MPI_Comm_delete_attr          Petsc_MPI_Attr_delete

346: MPIUni_PETSC_EXTERN int    MPIUni_Abort(MPI_Comm,int);
347: MPIUni_PETSC_EXTERN int    MPI_Abort(MPI_Comm,int);
348: MPIUni_PETSC_EXTERN int    MPI_Attr_get(MPI_Comm comm,int keyval,void *attribute_val,int *flag);
349: MPIUni_PETSC_EXTERN int    MPI_Keyval_free(int*);
350: MPIUni_PETSC_EXTERN int    MPI_Attr_put(MPI_Comm,int,void *);
351: MPIUni_PETSC_EXTERN int    MPI_Attr_delete(MPI_Comm,int);
352: MPIUni_PETSC_EXTERN int    MPI_Keyval_create(MPI_Copy_function *,MPI_Delete_function *,int *,void *);
353: MPIUni_PETSC_EXTERN int    MPI_Comm_free(MPI_Comm*);
354: MPIUni_PETSC_EXTERN int    MPI_Comm_dup(MPI_Comm,MPI_Comm *);
355: MPIUni_PETSC_EXTERN int    MPI_Comm_create(MPI_Comm,MPI_Group,MPI_Comm *);
356: MPIUni_PETSC_EXTERN int    MPI_Init(int *, char ***);
357: MPIUni_PETSC_EXTERN int    MPI_Finalize(void);
358: MPIUni_PETSC_EXTERN int    MPI_Initialized(int*);
359: MPIUni_PETSC_EXTERN int    MPI_Finalized(int*);
360: MPIUni_PETSC_EXTERN int    MPI_Comm_size(MPI_Comm,int*);
361: MPIUni_PETSC_EXTERN int    MPI_Comm_rank(MPI_Comm,int*);
362: MPIUni_PETSC_EXTERN double MPI_Wtime(void);

364: MPIUni_PETSC_EXTERN int MPI_Type_get_envelope(MPI_Datatype,int*,int*,int*,int*);
365: MPIUni_PETSC_EXTERN int MPI_Type_get_contents(MPI_Datatype,int,int,int,int*,MPI_Aint*,MPI_Datatype*);
366: MPIUni_PETSC_EXTERN int MPI_Add_error_class(int*);
367: MPIUni_PETSC_EXTERN int MPI_Add_error_code(int,int*);

369: /*
370:     Routines we have replace with macros that do nothing
371:     Some return error codes others return success
372: */

374: typedef int MPI_Fint;
375: #define MPI_Comm_f2c(comm) (MPI_Comm)(comm)
376: #define MPI_Comm_c2f(comm) (MPI_Fint)(comm)
377: #define MPI_Type_f2c(type) (MPI_Datatype)(type)
378: #define MPI_Type_c2f(type) (MPI_Fint)(type)
379: #define MPI_Op_f2c(op)     (MPI_Op)(op)
380: #define MPI_Op_c2f(op)     (MPI_Fint)(op)

382: #define MPI_Send(buf,count,datatype,dest,tag,comm)  \
383:      (MPIUNI_ARG(buf),\
384:       MPIUNI_ARG(count),\
385:       MPIUNI_ARG(datatype),\
386:       MPIUNI_ARG(dest),\
387:       MPIUNI_ARG(tag),\
388:       MPIUNI_ARG(comm),\
389:       MPIUni_Abort(MPI_COMM_WORLD,0))
390: #define MPI_Recv(buf,count,datatype,source,tag,comm,status) \
391:      (MPIUNI_ARG(buf),\
392:       MPIUNI_ARG(count),\
393:       MPIUNI_ARG(datatype),\
394:       MPIUNI_ARG(source),\
395:       MPIUNI_ARG(tag),\
396:       MPIUNI_ARG(comm),\
397:       MPIUNI_ARG(status),\
398:       MPIUni_Abort(MPI_COMM_WORLD,0))
399: #define MPI_Get_count(status,datatype,count) \
400:      (MPIUNI_ARG(status),\
401:       MPIUNI_ARG(datatype),\
402:       MPIUNI_ARG(count),\
403:       MPIUni_Abort(MPI_COMM_WORLD,0))
404: #define MPI_Bsend(buf,count,datatype,dest,tag,comm)  \
405:      (MPIUNI_ARG(buf),\
406:       MPIUNI_ARG(count),\
407:       MPIUNI_ARG(datatype),\
408:       MPIUNI_ARG(dest),\
409:       MPIUNI_ARG(tag),\
410:       MPIUNI_ARG(comm),\
411:       MPIUni_Abort(MPI_COMM_WORLD,0))
412: #define MPI_Ssend(buf,count,datatype,dest,tag,comm) \
413:      (MPIUNI_ARG(buf),\
414:       MPIUNI_ARG(count),\
415:       MPIUNI_ARG(datatype),\
416:       MPIUNI_ARG(dest),\
417:       MPIUNI_ARG(tag),\
418:       MPIUNI_ARG(comm),\
419:       MPIUni_Abort(MPI_COMM_WORLD,0))
420: #define MPI_Rsend(buf,count,datatype,dest,tag,comm) \
421:      (MPIUNI_ARG(buf),\
422:       MPIUNI_ARG(count),\
423:       MPIUNI_ARG(datatype),\
424:       MPIUNI_ARG(dest),\
425:       MPIUNI_ARG(tag),\
426:       MPIUNI_ARG(comm),\
427:       MPIUni_Abort(MPI_COMM_WORLD,0))
428: #define MPI_Buffer_attach(buffer,size) \
429:      (MPIUNI_ARG(buffer),\
430:       MPIUNI_ARG(size),\
431:       MPI_SUCCESS)
432: #define MPI_Buffer_detach(buffer,size)\
433:      (MPIUNI_ARG(buffer),\
434:       MPIUNI_ARG(size),\
435:       MPI_SUCCESS)
436: #define MPI_Ibsend(buf,count,datatype,dest,tag,comm,request) \
437:      (MPIUNI_ARG(buf),\
438:       MPIUNI_ARG(count),\
439:       MPIUNI_ARG(datatype),\
440:       MPIUNI_ARG(dest),\
441:       MPIUNI_ARG(tag),\
442:       MPIUNI_ARG(comm),\
443:       MPIUNI_ARG(request),\
444:       MPIUni_Abort(MPI_COMM_WORLD,0))
445: #define MPI_Issend(buf,count,datatype,dest,tag,comm,request) \
446:      (MPIUNI_ARG(buf),\
447:       MPIUNI_ARG(count),\
448:       MPIUNI_ARG(datatype),\
449:       MPIUNI_ARG(dest),\
450:       MPIUNI_ARG(tag),\
451:       MPIUNI_ARG(comm),\
452:       MPIUNI_ARG(request),\
453:       MPIUni_Abort(MPI_COMM_WORLD,0))
454: #define MPI_Irsend(buf,count,datatype,dest,tag,comm,request) \
455:      (MPIUNI_ARG(buf),\
456:       MPIUNI_ARG(count),\
457:       MPIUNI_ARG(datatype),\
458:       MPIUNI_ARG(dest),\
459:       MPIUNI_ARG(tag),\
460:       MPIUNI_ARG(comm),\
461:       MPIUNI_ARG(request),\
462:       MPIUni_Abort(MPI_COMM_WORLD,0))
463: #define MPI_Irecv(buf,count,datatype,source,tag,comm,request) \
464:      (MPIUNI_ARG(buf),\
465:       MPIUNI_ARG(count),\
466:       MPIUNI_ARG(datatype),\
467:       MPIUNI_ARG(source),\
468:       MPIUNI_ARG(tag),\
469:       MPIUNI_ARG(comm),\
470:       MPIUNI_ARG(request),\
471:       MPIUni_Abort(MPI_COMM_WORLD,0))
472: #define MPI_Isend(buf,count,datatype,dest,tag,comm,request) \
473:      (MPIUNI_ARG(buf),\
474:       MPIUNI_ARG(count),\
475:       MPIUNI_ARG(datatype),\
476:       MPIUNI_ARG(dest),\
477:       MPIUNI_ARG(tag),\
478:       MPIUNI_ARG(comm),\
479:       MPIUNI_ARG(request),\
480:       MPIUni_Abort(MPI_COMM_WORLD,0))
481: #define MPI_Wait(request,status) \
482:      (MPIUNI_ARG(request),\
483:       MPIUNI_ARG(status),\
484:       MPI_SUCCESS)
485: #define MPI_Test(request,flag,status) \
486:      (MPIUNI_ARG(request),\
487:       MPIUNI_ARG(status),\
488:       *(flag) = 0,\
489:       MPI_SUCCESS)
490: #define MPI_Request_free(request) \
491:      (MPIUNI_ARG(request),\
492:       MPI_SUCCESS)
493: #define MPI_Waitany(count,array_of_requests,index,status) \
494:      (MPIUNI_ARG(count),\
495:       MPIUNI_ARG(array_of_requests),\
496:       MPIUNI_ARG(status),\
497:       *(index) = 0,\
498:       MPI_SUCCESS)
499: #define MPI_Testany(a,b,c,d,e) \
500:      (MPIUNI_ARG(a),\
501:       MPIUNI_ARG(b),\
502:       MPIUNI_ARG(c),\
503:       MPIUNI_ARG(d),\
504:       MPIUNI_ARG(e),\
505:       MPI_SUCCESS)
506: #define MPI_Waitall(count,array_of_requests,array_of_statuses) \
507:      (MPIUNI_ARG(count),\
508:       MPIUNI_ARG(array_of_requests),\
509:       MPIUNI_ARG(array_of_statuses),\
510:       MPI_SUCCESS)
511: #define MPI_Testall(count,array_of_requests,flag,array_of_statuses) \
512:      (MPIUNI_ARG(count),\
513:       MPIUNI_ARG(array_of_requests),\
514:       MPIUNI_ARG(flag),\
515:       MPIUNI_ARG(array_of_statuses),\
516:       MPI_SUCCESS)
517: #define MPI_Waitsome(incount,array_of_requests,outcount,\
518:                      array_of_indices,array_of_statuses)        \
519:      (MPIUNI_ARG(incount),\
520:       MPIUNI_ARG(array_of_requests),\
521:       MPIUNI_ARG(outcount),\
522:       MPIUNI_ARG(array_of_indices),\
523:       MPIUNI_ARG(array_of_statuses),\
524:       MPI_SUCCESS)
525: #define MPI_Comm_group(comm,group) \
526:      (MPIUNI_ARG(comm),\
527:       *group = 1,\
528:       MPI_SUCCESS)
529: #define MPI_Group_incl(group,n,ranks,newgroup) \
530:      (MPIUNI_ARG(group),\
531:       MPIUNI_ARG(n),\
532:       MPIUNI_ARG(ranks),\
533:       MPIUNI_ARG(newgroup),\
534:       MPI_SUCCESS)
535: #define MPI_Testsome(incount,array_of_requests,outcount,\
536:                      array_of_indices,array_of_statuses) \
537:      (MPIUNI_ARG(incount),\
538:       MPIUNI_ARG(array_of_requests),\
539:       MPIUNI_ARG(outcount),\
540:       MPIUNI_ARG(array_of_indices),\
541:       MPIUNI_ARG(array_of_statuses),\
542:       MPI_SUCCESS)
543: #define MPI_Iprobe(source,tag,comm,flag,status) \
544:      (MPIUNI_ARG(source),\
545:       MPIUNI_ARG(tag),\
546:       MPIUNI_ARG(comm),\
547:       *(flag)=0,\
548:       MPIUNI_ARG(status),\
549:       MPI_SUCCESS)
550: #define MPI_Probe(source,tag,comm,status) \
551:      (MPIUNI_ARG(source),\
552:       MPIUNI_ARG(tag),\
553:       MPIUNI_ARG(comm),\
554:       MPIUNI_ARG(status),\
555:       MPI_SUCCESS)
556: #define MPI_Cancel(request) \
557:      (MPIUNI_ARG(request),\
558:       MPI_SUCCESS)
559: #define MPI_Test_cancelled(status,flag) \
560:      (MPIUNI_ARG(status),\
561:       *(flag)=0,\
562:       MPI_SUCCESS)
563: #define MPI_Send_init(buf,count,datatype,dest,tag,comm,request) \
564:      (MPIUNI_ARG(buf),\
565:       MPIUNI_ARG(count),\
566:       MPIUNI_ARG(datatype),\
567:       MPIUNI_ARG(dest),\
568:       MPIUNI_ARG(tag),\
569:       MPIUNI_ARG(comm),\
570:       MPIUNI_ARG(request),\
571:       MPI_SUCCESS)
572: #define MPI_Bsend_init(buf,count,datatype,dest,tag,comm,request) \
573:      (MPIUNI_ARG(buf),\
574:       MPIUNI_ARG(count),\
575:       MPIUNI_ARG(datatype),\
576:       MPIUNI_ARG(dest),\
577:       MPIUNI_ARG(tag),\
578:       MPIUNI_ARG(comm),\
579:       MPIUNI_ARG(request),\
580:       MPI_SUCCESS)
581: #define MPI_Ssend_init(buf,count,datatype,dest,tag,comm,request) \
582:      (MPIUNI_ARG(buf),\
583:       MPIUNI_ARG(count),\
584:       MPIUNI_ARG(datatype),\
585:       MPIUNI_ARG(dest),\
586:       MPIUNI_ARG(tag),\
587:       MPIUNI_ARG(comm),\
588:       MPIUNI_ARG(request),\
589:       MPI_SUCCESS)
590: #define MPI_Bsend_init(buf,count,datatype,dest,tag,comm,request) \
591:      (MPIUNI_ARG(buf),\
592:       MPIUNI_ARG(count),\
593:       MPIUNI_ARG(datatype),\
594:       MPIUNI_ARG(dest),\
595:       MPIUNI_ARG(tag),\
596:       MPIUNI_ARG(comm),\
597:       MPIUNI_ARG(request),\
598:       MPI_SUCCESS)
599: #define MPI_Rsend_init(buf,count,datatype,dest,tag,comm,request) \
600:      (MPIUNI_ARG(buf),\
601:       MPIUNI_ARG(count),\
602:       MPIUNI_ARG(datatype),\
603:       MPIUNI_ARG(dest),\
604:       MPIUNI_ARG(tag),\
605:       MPIUNI_ARG(comm),\
606:       MPIUNI_ARG(request),\
607:       MPI_SUCCESS)
608: #define MPI_Recv_init(buf,count,datatype,source,tag,comm,request) \
609:      (MPIUNI_ARG(buf),\
610:       MPIUNI_ARG(count),\
611:       MPIUNI_ARG(datatype),\
612:       MPIUNI_ARG(source),\
613:       MPIUNI_ARG(tag),\
614:       MPIUNI_ARG(comm),\
615:       MPIUNI_ARG(request),\
616:       MPI_SUCCESS)
617: #define MPI_Start(request) \
618:      (MPIUNI_ARG(request),\
619:       MPI_SUCCESS)
620: #define MPI_Startall(count,array_of_requests) \
621:      (MPIUNI_ARG(count),\
622:       MPIUNI_ARG(array_of_requests),\
623:       MPI_SUCCESS)
624: #define MPI_Sendrecv(sendbuf,sendcount,sendtype,\
625:                      dest,sendtag,recvbuf,recvcount,\
626:                      recvtype,source,recvtag,\
627:                      comm,status) \
628:      (MPIUNI_ARG(dest),\
629:       MPIUNI_ARG(sendtag),\
630:       MPIUNI_ARG(recvcount),\
631:       MPIUNI_ARG(recvtype),\
632:       MPIUNI_ARG(source),\
633:       MPIUNI_ARG(recvtag),\
634:       MPIUNI_ARG(comm),\
635:       MPIUNI_ARG(status),\
636:       MPIUNI_Memcpy(recvbuf,sendbuf,(sendcount)*MPI_sizeof(sendtype)))
637: #define MPI_Sendrecv_replace(buf,count,datatype,dest,sendtag,\
638:                              source,recvtag,comm,status) \
639:      (MPIUNI_ARG(buf),\
640:       MPIUNI_ARG(count),\
641:       MPIUNI_ARG(datatype),\
642:       MPIUNI_ARG(dest),\
643:       MPIUNI_ARG(sendtag),\
644:       MPIUNI_ARG(source),\
645:       MPIUNI_ARG(recvtag),\
646:       MPIUNI_ARG(comm),\
647:       MPIUNI_ARG(status),\
648:       MPI_SUCCESS)

650: #define MPI_COMBINER_NAMED      0
651: #define MPI_COMBINER_DUP        1
652: #define MPI_COMBINER_CONTIGUOUS 2
653:   /* 32-bit packing scheme: [combiner:4 | type-index:8 | count:12 | base-bytes:8] */
654: #define MPI_Type_dup(oldtype,newtype) \
655:      (*(newtype) = oldtype, MPI_SUCCESS)
656: #define MPI_Type_contiguous(count,oldtype,newtype) \
657:      (*(newtype) = (MPI_COMBINER_CONTIGUOUS<<28)|((oldtype)&0x0ff00000)|(((oldtype)>>8&0xfff)*(count))<<8|((oldtype)&0xff), MPI_SUCCESS)
658: #define MPI_Type_vector(count,blocklength,stride,oldtype,newtype) \
659:      (MPIUNI_ARG(count),\
660:       MPIUNI_ARG(blocklength),\
661:       MPIUNI_ARG(stride),\
662:       MPIUNI_ARG(oldtype),\
663:       MPIUNI_ARG(newtype),\
664:       MPIUni_Abort(MPI_COMM_WORLD,0))
665: #define MPI_Type_hvector(count,blocklength,stride,oldtype,newtype) \
666:      (MPIUNI_ARG(count),\
667:       MPIUNI_ARG(blocklength),\
668:       MPIUNI_ARG(stride),\
669:       MPIUNI_ARG(oldtype),\
670:       MPIUNI_ARG(newtype),\
671:       MPIUni_Abort(MPI_COMM_WORLD,0))
672: #define MPI_Type_indexed(count,array_of_blocklengths,array_of_displacements,oldtype,newtype) \
673:      (MPIUNI_ARG(count),\
674:       MPIUNI_ARG(array_of_blocklengths),\
675:       MPIUNI_ARG(array_of_displacements),\
676:       MPIUNI_ARG(oldtype),\
677:       MPIUNI_ARG(newtype),\
678:       MPIUni_Abort(MPI_COMM_WORLD,0))
679: #define MPI_Type_hindexed(count,array_of_blocklengths,array_of_displacements,oldtype,newtype) \
680:      (MPIUNI_ARG(count),\
681:       MPIUNI_ARG(array_of_blocklengths),\
682:       MPIUNI_ARG(array_of_displacements),\
683:       MPIUNI_ARG(oldtype),\
684:       MPIUNI_ARG(newtype),\
685:       MPIUni_Abort(MPI_COMM_WORLD,0))
686: #define MPI_Type_struct(count,array_of_blocklengths,array_of_displacements,array_of_types,newtype) \
687:      (MPIUNI_ARG(count),\
688:       MPIUNI_ARG(array_of_blocklengths),\
689:       MPIUNI_ARG(array_of_displacements),\
690:       MPIUNI_ARG(array_of_types),\
691:       MPIUNI_ARG(newtype),\
692:       MPIUni_Abort(MPI_COMM_WORLD,0))
693: #define MPI_Address(location,address) \
694:      (*(address) = (MPI_Aint)((char *)(location)), MPI_SUCCESS)
695: #define MPI_Type_size(datatype,size) (*(size) = MPI_sizeof((datatype)), MPI_SUCCESS)
696: #define MPI_Type_lb(datatype,lb) (MPIUNI_ARG(datatype), *(lb) = 0, MPI_SUCCESS)
697: #define MPI_Type_ub(datatype,ub) (*(ub) = MPI_sizeof((datatype)), MPI_SUCCESS)
698: #define MPI_Type_extent(datatype,extent) \
699:      (*(extent) = MPI_sizeof((datatype)), MPI_SUCCESS)
700: #define MPI_Type_get_extent(datatype,lb,extent) \
701:      (*(lb) = 0, *(extent) = MPI_sizeof((datatype)), MPI_SUCCESS)
702: #define MPI_Type_commit(datatype) (MPIUNI_ARG(datatype), MPI_SUCCESS)
703: #define MPI_Type_free(datatype) (*(datatype) = MPI_DATATYPE_NULL, MPI_SUCCESS)
704: #define MPI_Get_elements(status,datatype,count) \
705:      (MPIUNI_ARG(status),\
706:       MPIUNI_ARG(datatype),\
707:       MPIUNI_ARG(count),\
708:       MPIUni_Abort(MPI_COMM_WORLD,0))
709: #define MPI_Pack(inbuf,incount,datatype,outbuf,outsize,position,comm) \
710:      (MPIUNI_ARG(inbuf),\
711:       MPIUNI_ARG(incount),\
712:       MPIUNI_ARG(datatype),\
713:       MPIUNI_ARG(outbuf),\
714:       MPIUNI_ARG(outsize),\
715:       MPIUNI_ARG(position),\
716:       MPIUNI_ARG(comm),\
717:       MPIUni_Abort(MPI_COMM_WORLD,0))
718: #define MPI_Unpack(inbuf,insize,position,outbuf,outcount,datatype,comm) \
719:      (MPIUNI_ARG(inbuf),\
720:       MPIUNI_ARG(insize),\
721:       MPIUNI_ARG(position),\
722:       MPIUNI_ARG(outbuf),\
723:       MPIUNI_ARG(outcount),\
724:       MPIUNI_ARG(datatype),\
725:       MPIUNI_ARG(comm),\
726:       MPIUni_Abort(MPI_COMM_WORLD,0))
727: #define MPI_Pack_size(incount,datatype,comm,size) \
728:      (MPIUNI_ARG(incount),\
729:       MPIUNI_ARG(datatype),\
730:       MPIUNI_ARG(comm),\
731:       MPIUNI_ARG(size),\
732:       MPIUni_Abort(MPI_COMM_WORLD,0))
733: #define MPI_Barrier(comm) \
734:      (MPIUNI_ARG(comm),\
735:       MPI_SUCCESS)
736: #define MPI_Bcast(buffer,count,datatype,root,comm) \
737:      (MPIUNI_ARG(buffer),\
738:       MPIUNI_ARG(count),\
739:       MPIUNI_ARG(datatype),\
740:       MPIUNI_ARG(root),\
741:       MPIUNI_ARG(comm),\
742:       MPI_SUCCESS)
743: #define MPI_Gather(sendbuf,sendcount,sendtype,\
744:                    recvbuf,recvcount, recvtype,\
745:                    root,comm) \
746:      (MPIUNI_ARG(recvcount),\
747:       MPIUNI_ARG(root),\
748:       MPIUNI_ARG(recvtype),\
749:       MPIUNI_ARG(comm),\
750:       MPIUNI_Memcpy(recvbuf,sendbuf,(sendcount)*MPI_sizeof(sendtype)))
751: #define MPI_Gatherv(sendbuf,sendcount,sendtype,\
752:                     recvbuf,recvcounts,displs,\
753:                     recvtype,root,comm) \
754:      (MPIUNI_ARG(recvcounts),\
755:       MPIUNI_ARG(displs),\
756:       MPIUNI_ARG(recvtype),\
757:       MPIUNI_ARG(root),\
758:       MPIUNI_ARG(comm),\
759:       MPIUNI_Memcpy(recvbuf,sendbuf,(sendcount)*MPI_sizeof(sendtype)))
760: #define MPI_Scatter(sendbuf,sendcount,sendtype,\
761:                     recvbuf,recvcount,recvtype,\
762:                     root,comm) \
763:      (MPIUNI_ARG(sendcount),\
764:       MPIUNI_ARG(sendtype),\
765:       MPIUNI_ARG(recvbuf),\
766:       MPIUNI_ARG(recvtype),\
767:       MPIUNI_ARG(root),\
768:       MPIUNI_ARG(comm),\
769:       MPIUNI_Memcpy(recvbuf,sendbuf,(recvcount)*MPI_sizeof(recvtype)))
770: #define MPI_Scatterv(sendbuf,sendcounts,displs,\
771:                      sendtype,recvbuf,recvcount,\
772:                      recvtype,root,comm) \
773:      (MPIUNI_ARG(displs),\
774:       MPIUNI_ARG(sendtype),\
775:       MPIUNI_ARG(sendcounts),\
776:       MPIUNI_ARG(root),\
777:       MPIUNI_ARG(comm),\
778:       MPIUNI_Memcpy(recvbuf,sendbuf,(recvcount)*MPI_sizeof(recvtype)))
779: #define MPI_Allgather(sendbuf,sendcount,sendtype,\
780:                      recvbuf,recvcount,recvtype,comm) \
781:      (MPIUNI_ARG(recvcount),\
782:       MPIUNI_ARG(recvtype),\
783:       MPIUNI_ARG(comm),\
784:       MPIUNI_Memcpy(recvbuf,sendbuf,(sendcount)*MPI_sizeof(sendtype)))
785: #define MPI_Allgatherv(sendbuf,sendcount,sendtype,\
786:      recvbuf,recvcounts,displs,recvtype,comm) \
787:      (MPIUNI_ARG(recvcounts),\
788:       MPIUNI_ARG(displs),\
789:       MPIUNI_ARG(recvtype),\
790:       MPIUNI_ARG(comm),\
791:       MPIUNI_Memcpy(recvbuf,sendbuf,(sendcount)*MPI_sizeof(sendtype)))
792: #define MPI_Alltoall(sendbuf,sendcount,sendtype,\
793:                      recvbuf,recvcount,recvtype,comm) \
794:      (MPIUNI_ARG(recvcount),\
795:       MPIUNI_ARG(recvtype),\
796:       MPIUNI_ARG(comm),\
797:       MPIUNI_Memcpy(recvbuf,sendbuf,(sendcount)*MPI_sizeof(sendtype)))
798: #define MPI_Alltoallv(sendbuf,sendcounts,sdispls,sendtype,\
799:                       recvbuf,recvcounts,rdispls,recvtype,comm) \
800:      (MPIUNI_ARG(sendbuf),\
801:       MPIUNI_ARG(sendcounts),\
802:       MPIUNI_ARG(sdispls),\
803:       MPIUNI_ARG(sendtype),\
804:       MPIUNI_ARG(recvbuf),\
805:       MPIUNI_ARG(recvcounts),\
806:       MPIUNI_ARG(rdispls),\
807:       MPIUNI_ARG(recvtype),\
808:       MPIUNI_ARG(comm),\
809:       MPIUni_Abort(MPI_COMM_WORLD,0))
810: #define MPI_Alltoallw(sendbuf,sendcounts,sdispls,sendtypes,\
811:                       recvbuf,recvcounts,rdispls,recvtypes,comm) \
812:      (MPIUNI_ARG(sendbuf),\
813:       MPIUNI_ARG(sendcounts),\
814:       MPIUNI_ARG(sdispls),\
815:       MPIUNI_ARG(sendtypes),\
816:       MPIUNI_ARG(recvbuf),\
817:       MPIUNI_ARG(recvcount),\
818:       MPIUNI_ARG(rdispls),\
819:       MPIUNI_ARG(recvtypes),\
820:       MPIUNI_ARG(comm),\
821:       MPIUni_Abort(MPI_COMM_WORLD,0))
822: #define MPI_Reduce(sendbuf,recvbuf,count,datatype,op,root,comm) \
823:      (MPIUNI_ARG(op),\
824:       MPIUNI_ARG(root),\
825:       MPIUNI_ARG(comm),\
826:       MPIUNI_Memcpy(recvbuf,sendbuf,(count)*MPI_sizeof(datatype)))
827: #define MPI_Allreduce(sendbuf, recvbuf,count,datatype,op,comm) \
828:      (MPIUNI_ARG(op),\
829:       MPIUNI_ARG(comm),\
830:       MPIUNI_Memcpy(recvbuf,sendbuf,(count)*MPI_sizeof(datatype)))
831: #define MPI_Scan(sendbuf, recvbuf,count,datatype,op,comm) \
832:      (MPIUNI_ARG(op),\
833:       MPIUNI_ARG(comm),\
834:       MPIUNI_Memcpy(recvbuf,sendbuf,(count)*MPI_sizeof(datatype)))
835: #define MPI_Exscan(sendbuf,recvbuf,count,datatype,op,comm) \
836:      (MPIUNI_ARG(sendbuf),\
837:       MPIUNI_ARG(recvbuf),\
838:       MPIUNI_ARG(count),\
839:       MPIUNI_ARG(datatype),\
840:       MPIUNI_ARG(op),\
841:       MPIUNI_ARG(comm),\
842:       MPI_SUCCESS)
843: #define MPI_Reduce_scatter(sendbuf,recvbuf,recvcounts,datatype,op,comm) \
844:      (MPIUNI_ARG(sendbuf),\
845:       MPIUNI_ARG(recvbuf),\
846:       MPIUNI_ARG(recvcounts),\
847:       MPIUNI_ARG(datatype),\
848:       MPIUNI_ARG(op),\
849:       MPIUNI_ARG(comm),\
850:       MPIUni_Abort(MPI_COMM_WORLD,0))

852: #define MPI_Op_create(function,commute,op) \
853:      (MPIUNI_ARG(function),\
854:       MPIUNI_ARG(commute),\
855:       MPIUNI_ARG(op),\
856:       MPI_SUCCESS)
857: #define MPI_Op_free(op) \
858:      (*(op) = MPI_OP_NULL, MPI_SUCCESS)

860: #define MPI_Group_size(group,size) \
861:   (MPIUNI_ARG(group),\
862:    *(size)=1,\
863:    MPI_SUCCESS)
864: #define MPI_Group_rank(group,rank) \
865:   (MPIUNI_ARG(group),\
866:    *(rank)=0,\
867:    MPI_SUCCESS)
868: #define MPI_Group_translate_ranks(group1,n,ranks1,group2,ranks2) \
869:      (MPIUNI_ARG(group1),\
870:       MPIUNI_ARG(group2),\
871:       MPIUNI_Memcpy((ranks2),(ranks1),(n)*sizeof(int)))
872: #define MPI_Group_compare(group1,group2,result) \
873:     (MPIUNI_ARG(group1),\
874:      MPIUNI_ARG(group2),\
875:      *(result)=1,\
876:      MPI_SUCCESS)
877: #define MPI_Group_union(group1,group2,newgroup) MPI_SUCCESS
878: #define MPI_Group_intersection(group1,group2,newgroup) MPI_SUCCESS
879: #define MPI_Group_difference(group1,group2,newgroup) MPI_SUCCESS
880: #define MPI_Group_excl(group,n,ranks,newgroup) MPI_SUCCESS
881: #define MPI_Group_range_incl(group,n,ranges,newgroup) MPI_SUCCESS
882: #define MPI_Group_range_excl(group,n,ranges,newgroup) MPI_SUCCESS
883: #define MPI_Group_free(group) \
884:      (*(group) = MPI_GROUP_NULL, MPI_SUCCESS)

886: #define MPI_Comm_compare(comm1,comm2,result) \
887:      (MPIUNI_ARG(comm1),\
888:       MPIUNI_ARG(comm2),\
889:       *(result)=MPI_IDENT,\
890:       MPI_SUCCESS)
891: #define MPI_Comm_split(comm,color,key,newcomm) \
892:      (MPIUNI_ARG(color),\
893:       MPIUNI_ARG(key),\
894:       MPI_Comm_dup(comm,newcomm))
895: #define MPI_Comm_split_type(comm,color,key,info,newcomm) \
896:      (MPIUNI_ARG(color),\
897:       MPIUNI_ARG(key),\
898:       MPIUNI_ARG(info),\
899:       MPI_Comm_dup(comm,newcomm))
900: #define MPI_Comm_test_inter(comm,flag) (*(flag)=1, MPI_SUCCESS)
901: #define MPI_Comm_remote_size(comm,size) (*(size)=1 ,MPI_SUCCESS)
902: #define MPI_Comm_remote_group(comm,group) MPI_SUCCESS
903: #define MPI_Intercomm_create(local_comm,local_leader,peer_comm,\
904:      remote_leader,tag,newintercomm) MPI_SUCCESS
905: #define MPI_Intercomm_merge(intercomm,high,newintracomm) MPI_SUCCESS
906: #define MPI_Topo_test(comm,flag) MPI_SUCCESS
907: #define MPI_Cart_create(comm_old,ndims,dims,periods,\
908:      reorder,comm_cart) MPIUni_Abort(MPI_COMM_WORLD,0)
909: #define MPI_Dims_create(nnodes,ndims,dims) MPIUni_Abort(MPI_COMM_WORLD,0)
910: #define MPI_Graph_create(comm,a,b,c,d,e) MPIUni_Abort(MPI_COMM_WORLD,0)
911: #define MPI_Graphdims_Get(comm,nnodes,nedges) MPIUni_Abort(MPI_COMM_WORLD,0)
912: #define MPI_Graph_get(comm,a,b,c,d) MPIUni_Abort(MPI_COMM_WORLD,0)
913: #define MPI_Cartdim_get(comm,ndims) MPIUni_Abort(MPI_COMM_WORLD,0)
914: #define MPI_Cart_get(comm,maxdims,dims,periods,coords) \
915:      MPIUni_Abort(MPI_COMM_WORLD,0)
916: #define MPI_Cart_rank(comm,coords,rank) MPIUni_Abort(MPI_COMM_WORLD,0)
917: #define MPI_Cart_coords(comm,rank,maxdims,coords) \
918:      MPIUni_Abort(MPI_COMM_WORLD,0)
919: #define MPI_Graph_neighbors_count(comm,rank,nneighbors) \
920:      MPIUni_Abort(MPI_COMM_WORLD,0)
921: #define MPI_Graph_neighbors(comm,rank,maxneighbors,neighbors) \
922:      MPIUni_Abort(MPI_COMM_WORLD,0)
923: #define MPI_Cart_shift(comm,direction,disp,rank_source,rank_dest) \
924:      MPIUni_Abort(MPI_COMM_WORLD,0)
925: #define MPI_Cart_sub(comm,remain_dims,newcomm) MPIUni_Abort(MPI_COMM_WORLD,0)
926: #define MPI_Cart_map(comm,ndims,dims,periods,newrank) MPIUni_Abort(MPI_COMM_WORLD,0)
927: #define MPI_Graph_map(comm,a,b,c,d) MPIUni_Abort(MPI_COMM_WORLD,0)

929: #define MPI_Get_processor_name(name,result_len)                         \
930:      (*(result_len) = 9,MPIUNI_Memcpy(name,"localhost",10*sizeof(char)))
931: #define MPI_Errhandler_create(function,errhandler) \
932:      (MPIUNI_ARG(function),\
933:       *(errhandler) = MPI_ERRORS_RETURN,\
934:       MPI_SUCCESS)
935: #define MPI_Errhandler_set(comm,errhandler) \
936:      (MPIUNI_ARG(comm),\
937:       MPIUNI_ARG(errhandler),\
938:       MPI_SUCCESS)
939: #define MPI_Errhandler_get(comm,errhandler) \
940:      (MPIUNI_ARG(comm),\
941:       (*errhandler) = MPI_ERRORS_RETURN,\
942:       MPI_SUCCESS)
943: #define MPI_Errhandler_free(errhandler) \
944:      (*(errhandler) = MPI_ERRHANDLER_NULL,\
945:       MPI_SUCCESS)
946: #define MPI_Error_string(errorcode,string,result_len) \
947:      (MPIUNI_ARG(errorcode),\
948:       *(result_len) = 9,\
949:       MPIUNI_Memcpy(string,"MPI error",10*sizeof(char)))
950: #define MPI_Error_class(errorcode,errorclass) \
951:      (*(errorclass) = errorcode, MPI_SUCCESS)
952: #define MPI_Wtick() 1.0
953: #define MPI_Pcontrol(level) MPI_SUCCESS

955: /* MPI-IO additions */

957: typedef int MPI_File;
958: #define MPI_FILE_NULL 0

960: typedef int MPI_Offset;

962: #define MPI_MODE_RDONLY  0
963: #define MPI_MODE_WRONLY  0
964: #define MPI_MODE_CREATE  0

966: #define MPI_File_open(comm,filename,amode,info,mpi_fh) \
967:   (MPIUNI_ARG(comm),\
968:    MPIUNI_ARG(filename),\
969:    MPIUNI_ARG(amode),\
970:    MPIUNI_ARG(info),\
971:    MPIUNI_ARG(mpi_fh),\
972:    MPIUni_Abort(MPI_COMM_WORLD,0))

974: #define MPI_File_close(mpi_fh) \
975:   (MPIUNI_ARG(mpi_fh),\
976:    MPIUni_Abort(MPI_COMM_WORLD,0))

978: #define MPI_File_set_view(mpi_fh,disp,etype,filetype,datarep,info) \
979:   (MPIUNI_ARG(mpi_fh),\
980:    MPIUNI_ARG(disp),\
981:    MPIUNI_ARG(etype),\
982:    MPIUNI_ARG(filetype),\
983:    MPIUNI_ARG(datarep),\
984:    MPIUNI_ARG(info),\
985:    MPIUni_Abort(MPI_COMM_WORLD,0))

987: #define MPI_File_write_all(mpi_fh,buf,count,datatype,status) \
988:   (MPIUNI_ARG(mpi_fh),\
989:    MPIUNI_ARG(buf),\
990:    MPIUNI_ARG(count),\
991:    MPIUNI_ARG(datatype),\
992:    MPIUNI_ARG(status),\
993:    MPIUni_Abort(MPI_COMM_WORLD,0))

995: #define MPI_File_read_all(mpi_fh,buf,count,datatype,status) \
996:   (MPIUNI_ARG(mpi_fh),\
997:    MPIUNI_ARG(buf),\
998:    MPIUNI_ARG(count),\
999:    MPIUNI_ARG(datatype),\
1000:    MPIUNI_ARG(status),\
1001:    MPIUni_Abort(MPI_COMM_WORLD,0))

1003:   /* called from PetscInitialize() - so return success */
1004: #define MPI_Register_datarep(name,read_conv_fn,write_conv_fn,extent_fn,state) \
1005:   (MPIUNI_ARG(name),\
1006:    MPIUNI_ARG(read_conv_fn),\
1007:    MPIUNI_ARG(write_conv_fn),\
1008:    MPIUNI_ARG(extent_fn),\
1009:    MPIUNI_ARG(state),\
1010:    MPI_SUCCESS)

1012: #define MPI_Type_create_subarray(ndims,array_of_sizes,array_of_subsizes,array_of_starts,order,oldtype,newtype) \
1013:   (MPIUNI_ARG(ndims),\
1014:    MPIUNI_ARG(array_of_sizes),\
1015:    MPIUNI_ARG(array_of_subsizes),\
1016:    MPIUNI_ARG(array_of_starts),\
1017:    MPIUNI_ARG(order),\
1018:    MPIUNI_ARG(oldtype),\
1019:    MPIUNI_ARG(newtype),\
1020:    MPIUni_Abort(MPI_COMM_WORLD,0))

1022: #define MPI_Type_create_resized(oldtype,lb,extent,newtype) \
1023:   (MPIUNI_ARG(oldtype),\
1024:    MPIUNI_ARG(lb),\
1025:    MPIUNI_ARG(extent),\
1026:    MPIUNI_ARG(newtype),\
1027:    MPIUni_Abort(MPI_COMM_WORLD,0))

1029: #if defined(__cplusplus)
1030: }
1031: #endif
1032: #endif