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MPI_File_write(3) man page (version 1.2.9)

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NAME

       MPI_File_write  -  Writes  a file starting at the location specified by
       the individual file pointer (blocking, noncollective).

SYNTAX

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

       Fortran Syntax
           INCLUDE 'mpif.h'
           MPI_FILE_WRITE(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(const void* buf, int count,
            const MPI::Datatype& datatype, MPI::Status& status)

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

INPUT/OUTPUT PARAMETER

       fh        File handle (handle).

INPUT PARAMETERS

       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 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 stores the number of datatype  ele-
       ments actually written in status.  All other fields of status are unde-
       fined.

       It is erroneous to call this function if MPI_MODE_SEQUENTIAL  mode  was
       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.

Open MPI 1.2                    September 2006        MPI_File_write(3OpenMPI)

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