Actual source code: mpi.h
petsc-3.10.5 2019-03-28
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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)))

    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