MPI_File_write_ordered - Writes a file at a location specified by a shared file pointer (blocking, collective).
18.104.22.168.1. C Syntax
#include <mpi.h> int MPI_File_write_ordered(MPI_File fh, const void *buf, int count, MPI_Datatype datatype, MPI_Status *status)
22.214.171.124.2. Fortran Syntax
USE MPI ! or the older form: INCLUDE 'mpif.h' MPI_FILE_WRITE_ORDERED(FH, BUF, COUNT, DATATYPE, STATUS, IERROR) <type> BUF(*) INTEGER FH, COUNT, DATATYPE, STATUS(MPI_STATUS_SIZE), IERROR
126.96.36.199.3. Fortran 2008 Syntax
USE mpi_f08 MPI_File_write_ordered(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
188.8.131.52. 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).
184.108.40.206. Output Parameters
status: Status object (Status).
IERROR: Fortran only: Error status (integer).
MPI_File_write_ordered is a collective routine. This routine must be
called by all processes in the communicator group associated with the
fh. Each process may pass different argument values for
count arguments. Each process attempts to
write, into the file associated with
fh, a total number of
data items having
datatype type contained in the user’s buffer
buf. For each process, the location in the file at which data is
written is the position at which the shared file pointer would be after
all processes whose ranks within the group are less than that of this
process had written their data. MPI_File_write_ordered returns the
datatype elements written in
status. The shared file
pointer is updated by the amounts of data requested by all processes of
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.