Actual source code: mpi.h

petsc-3.11.3 2019-06-26
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  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)))
241: #define MPI_2DOUBLE            (15 << 20 | 1 << 8 | (int)(2*sizeof(double)))

243: /* Fortran datatypes; Jed Brown says they should be defined here */
244: #define MPI_INTEGER MPI_INT
245: #define MPI_DOUBLE_PRECISION MPI_DOUBLE
246: #define MPI_COMPLEX16 MPI_C_DOUBLE_COMPLEX
247: #define MPI_2DOUBLE_PRECISION MPI_2DOUBLE

249: #define MPI_ORDER_C            0
250: #define MPI_ORDER_FORTRAN      1

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

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

265: typedef int MPI_Request;
266: #define MPI_REQUEST_NULL 0

268: typedef int MPI_Group;
269: #define MPI_GROUP_NULL  0
270: #define MPI_GROUP_EMPTY 0

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

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

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

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

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

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

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

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

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

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

371: /*
372:     Routines we have replace with macros that do nothing
373:     Some return error codes others return success
374: */

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

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

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

855: #define MPI_Op_create(function,commute,op) \
856:      (MPIUNI_ARG(function),\
857:       MPIUNI_ARG(commute),\
858:       MPIUNI_ARG(op),\
859:       MPI_SUCCESS)
860: #define MPI_Op_free(op) \
861:      (*(op) = MPI_OP_NULL, MPI_SUCCESS)

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

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

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

958: /* MPI-IO additions */

960: typedef int MPI_File;
961: #define MPI_FILE_NULL 0

963: typedef int MPI_Offset;

965: #define MPI_MODE_RDONLY  0
966: #define MPI_MODE_WRONLY  0
967: #define MPI_MODE_CREATE  0

969: #define MPI_File_open(comm,filename,amode,info,mpi_fh) \
970:   (MPIUNI_ARG(comm),\
971:    MPIUNI_ARG(filename),\
972:    MPIUNI_ARG(amode),\
973:    MPIUNI_ARG(info),\
974:    MPIUNI_ARG(mpi_fh),\
975:    MPIUni_Abort(MPI_COMM_WORLD,0))

977: #define MPI_File_close(mpi_fh) \
978:   (MPIUNI_ARG(mpi_fh),\
979:    MPIUni_Abort(MPI_COMM_WORLD,0))

981: #define MPI_File_set_view(mpi_fh,disp,etype,filetype,datarep,info) \
982:   (MPIUNI_ARG(mpi_fh),\
983:    MPIUNI_ARG(disp),\
984:    MPIUNI_ARG(etype),\
985:    MPIUNI_ARG(filetype),\
986:    MPIUNI_ARG(datarep),\
987:    MPIUNI_ARG(info),\
988:    MPIUni_Abort(MPI_COMM_WORLD,0))

990: #define MPI_File_write_all(mpi_fh,buf,count,datatype,status) \
991:   (MPIUNI_ARG(mpi_fh),\
992:    MPIUNI_ARG(buf),\
993:    MPIUNI_ARG(count),\
994:    MPIUNI_ARG(datatype),\
995:    MPIUNI_ARG(status),\
996:    MPIUni_Abort(MPI_COMM_WORLD,0))

998: #define MPI_File_read_all(mpi_fh,buf,count,datatype,status) \
999:   (MPIUNI_ARG(mpi_fh),\
1000:    MPIUNI_ARG(buf),\
1001:    MPIUNI_ARG(count),\
1002:    MPIUNI_ARG(datatype),\
1003:    MPIUNI_ARG(status),\
1004:    MPIUni_Abort(MPI_COMM_WORLD,0))

1006:   /* called from PetscInitialize() - so return success */
1007: #define MPI_Register_datarep(name,read_conv_fn,write_conv_fn,extent_fn,state) \
1008:   (MPIUNI_ARG(name),\
1009:    MPIUNI_ARG(read_conv_fn),\
1010:    MPIUNI_ARG(write_conv_fn),\
1011:    MPIUNI_ARG(extent_fn),\
1012:    MPIUNI_ARG(state),\
1013:    MPI_SUCCESS)

1015: #define MPI_Type_create_subarray(ndims,array_of_sizes,array_of_subsizes,array_of_starts,order,oldtype,newtype) \
1016:   (MPIUNI_ARG(ndims),\
1017:    MPIUNI_ARG(array_of_sizes),\
1018:    MPIUNI_ARG(array_of_subsizes),\
1019:    MPIUNI_ARG(array_of_starts),\
1020:    MPIUNI_ARG(order),\
1021:    MPIUNI_ARG(oldtype),\
1022:    MPIUNI_ARG(newtype),\
1023:    MPIUni_Abort(MPI_COMM_WORLD,0))

1025: #define MPI_Type_create_resized(oldtype,lb,extent,newtype) \
1026:   (MPIUNI_ARG(oldtype),\
1027:    MPIUNI_ARG(lb),\
1028:    MPIUNI_ARG(extent),\
1029:    MPIUNI_ARG(newtype),\
1030:    MPIUni_Abort(MPI_COMM_WORLD,0))

1032: #if defined(__cplusplus)
1033: }
1034: #endif
1035: #endif