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!
! This example creates HDF5 file in a parallel environment
!
PROGRAM FILE_CREATE
USE HDF5 ! This module contains all necessary modules
IMPLICIT NONE
INCLUDE 'mpif.h'
CHARACTER(LEN=10), PARAMETER :: filename = "sds.h5" ! File name
INTEGER(HID_T) :: file_id ! File identifier
INTEGER(HID_T) :: plist_id ! Property list identifier
INTEGER :: error
!
! MPI definitions and calls.
!
INTEGER :: mpierror ! MPI error flag
INTEGER :: comm, info
INTEGER :: mpi_size, mpi_rank
comm = MPI_COMM_WORLD
info = MPI_INFO_NULL
CALL MPI_INIT(mpierror)
CALL MPI_COMM_SIZE(comm, mpi_size, mpierror)
CALL MPI_COMM_RANK(comm, mpi_rank, mpierror)
!
! Initialize FORTRAN predefined datatypes
!
CALL h5open_f(error)
!
! Setup file access property list with parallel I/O access.
!
CALL h5pcreate_f(H5P_FILE_ACCESS_F, plist_id, error)
CALL h5pset_fapl_mpio_f(plist_id, comm, info, error)
!
! Create the file collectively.
!
CALL h5fcreate_f(filename, H5F_ACC_TRUNC_F, file_id, error, access_prp = plist_id)
!
! Close property list and the file.
!
CALL h5pclose_f(plist_id, error)
CALL h5fclose_f(file_id, error)
!
! Close FORTRAN interface
!
CALL h5close_f(error)
CALL MPI_FINALIZE(mpierror)
END PROGRAM FILE_CREATE
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