NAME

       MPI_File_write_all  - Writes a file starting at the locations specified by individual file
       pointers (blocking, collective).

SYNTAX

       C Syntax
           #include <mpi.h>
           int MPI_File_write_all(MPI_File fh, const void *buf,
                  int count, MPI_Datatype datatype, MPI_Status *status)

Fortran Syntax

           INCLUDE 'mpif.h'
           MPI_FILE_WRITE_ALL(FH,  BUF, COUNT,
                   DATATYPE, STATUS,  IERROR)
             <type>        BUF(*)
             INTEGER  FH, COUNT, DATATYPE, STATUS(MPI_STATUS_SIZE),
                      IERROR

C++ Syntax

       #include <mpi.h>
       void MPI::File::Write_all(const void* buf, int count,
            const MPI::Datatype& datatype, MPI::Status& status)

       void MPI::File::Write_all(const void* buf, int count,
            const MPI::Datatype& datatype)

INPUT PARAMETERS

       fh        File handle (handle).

       buf       Initial address of buffer (choice).

       count     Number of elements in buffer (integer).

       datatype  Data type of each buffer element (handle).

OUTPUT PARAMETERS

       status    Status object (status).

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       MPI_File_write_all is a collective routine that attempts to write into the file associated
       with fh (at the current individual file pointer position maintained by the system) a total
       number of count data items having datatype type from the user's buffer buf.  The  data  is
       written  into  those  parts  of the file specified by the current view. MPI_File_write_all
       stores the number of datatype elements actually written in status.  All  other  fields  of
       status are undefined.

       It  is  erroneous to call this function if MPI_MODE_SEQUENTIAL mode was specified when the
       file was opened.

ERRORS

       Almost all MPI routines return an error value; C routines as the value of the function and
       Fortran  routines in the last argument. C++ functions do not return errors. If the default
       error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then  on  error  the  C++  exception
       mechanism will be used to throw an MPI::Exception object.

       Before  the  error value is returned, the current MPI error handler is called. For MPI I/O
       function errors, the default error handler is set to MPI_ERRORS_RETURN. The error  handler
       may    be   changed   with   MPI_File_set_errhandler;   the   predefined   error   handler
       MPI_ERRORS_ARE_FATAL may be used to  make  I/O  errors  fatal.  Note  that  MPI  does  not
       guarantee that an MPI program can continue past an error.