17.2.157. MPI_File_write_shared

MPI_File_write_shared - Writes a file using the shared file pointer (blocking, noncollective).

17.2.157.1. Syntax

17.2.157.1.1. C Syntax

#include <mpi.h>

int MPI_File_write_shared(MPI_File fh, const void *buf, int count,
    MPI_Datatype datatype, MPI_Status *status)

17.2.157.1.2. Fortran Syntax

USE MPI
! or the older form: INCLUDE 'mpif.h'

MPI_FILE_WRITE_SHARED(FH, BUF, COUNT, DATATYPE, STATUS, IERROR)
    <type>  BUF(*)
      INTEGER   FH, COUNT, DATATYPE, STATUS(MPI_STATUS_SIZE), IERROR

17.2.157.1.3. Fortran 2008 Syntax

USE mpi_f08

MPI_File_write_shared(fh, buf, count, datatype, status, ierror)
    TYPE(MPI_File), INTENT(IN) :: fh
    TYPE(*), DIMENSION(..), INTENT(IN) :: buf
    INTEGER, INTENT(IN) :: count
    TYPE(MPI_Datatype), INTENT(IN) :: datatype
    TYPE(MPI_Status) :: status
    INTEGER, OPTIONAL, INTENT(OUT) :: ierror

17.2.157.2. Input/Output Parameter

fh : File handle (handle).

17.2.157.3. Input Parameters

buf : Initial address of buffer (choice).
count : Number of elements in buffer (integer).
datatype : Data type of each buffer element (handle).

17.2.157.4. Output Parameters

status : Status object (status).
IERROR : Fortran only: Error status (integer).

17.2.157.5. Description

MPI_File_write_shared is a blocking routine that uses the shared file pointer to write files. The order of serialization is not deterministic for this noncollective routine.

17.2.157.6. Errors

Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument.

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.