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https://github.com/HDFGroup/hdf5.git
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fd70b2afa8
Trim trailing whitespace from source code files with this command:
find . \( -name "*.[ch]" -or -name "*.cpp" -or -name "*.f90" \) -print |xargs -n 1 sed -i "" 's/[[:blank:]]*$//'
Tested on:
None - eyeballed only
144 lines
4.8 KiB
Fortran
144 lines
4.8 KiB
Fortran
! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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! Copyright by The HDF Group. *
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! Copyright by the Board of Trustees of the University of Illinois. *
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! All rights reserved. *
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! *
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! This file is part of HDF5. The full HDF5 copyright notice, including *
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! terms governing use, modification, and redistribution, is contained in *
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! the files COPYING and Copyright.html. COPYING can be found at the root *
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! of the source code distribution tree; Copyright.html can be found at the *
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! root level of an installed copy of the electronic HDF5 document set and *
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! is linked from the top-level documents page. It can also be found at *
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! http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
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! access to either file, you may request a copy from help@hdfgroup.org. *
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! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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!
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! Fortran parallel example. Copied from Tutorial's example program of
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! dataset.f90.
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PROGRAM DATASET
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USE HDF5 ! This module contains all necessary modules
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IMPLICIT NONE
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INCLUDE 'mpif.h'
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CHARACTER(LEN=10), PARAMETER :: default_fname = "sds.h5" ! Default name
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CHARACTER(LEN=8), PARAMETER :: dsetname = "IntArray" ! Dataset name
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CHARACTER(LEN=100) :: filename ! File name
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INTEGER :: fnamelen ! File name length
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INTEGER(HID_T) :: file_id ! File identifier
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INTEGER(HID_T) :: dset_id ! Dataset identifier
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INTEGER(HID_T) :: filespace ! Dataspace identifier in file
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INTEGER(HID_T) :: plist_id ! Property list identifier
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INTEGER(HSIZE_T), DIMENSION(2) :: dimsf = (/5,8/) ! Dataset dimensions.
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! INTEGER, DIMENSION(7) :: dimsfi = (/5,8,0,0,0,0,0/)
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! INTEGER(HSIZE_T), DIMENSION(2) :: dimsfi = (/5,8/)
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INTEGER(HSIZE_T), DIMENSION(2) :: dimsfi
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INTEGER, ALLOCATABLE :: data(:,:) ! Data to write
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INTEGER :: rank = 2 ! Dataset rank
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INTEGER :: error, error_n ! Error flags
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INTEGER :: i, j
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!
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! MPI definitions and calls.
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!
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INTEGER :: mpierror ! MPI error flag
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INTEGER :: comm, info
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INTEGER :: mpi_size, mpi_rank
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comm = MPI_COMM_WORLD
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info = MPI_INFO_NULL
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CALL MPI_INIT(mpierror)
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CALL MPI_COMM_SIZE(comm, mpi_size, mpierror)
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CALL MPI_COMM_RANK(comm, mpi_rank, mpierror)
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!
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! Initialize data buffer with trivial data.
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!
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ALLOCATE ( data(dimsf(1),dimsf(2)))
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do i = 1, dimsf(2)
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do j = 1, dimsf(1)
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data(j,i) = j - 1 + (i-1)*dimsf(1)
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enddo
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enddo
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!
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! Initialize FORTRAN interface
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!
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CALL h5open_f(error)
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!
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! Setup file access property list with parallel I/O access.
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!
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CALL h5pcreate_f(H5P_FILE_ACCESS_F, plist_id, error)
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CALL h5pset_fapl_mpio_f(plist_id, comm, info, error)
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!
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! Figure out the filename to use. If your system does not support
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! getenv, comment that statement with this,
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! filename = ""
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CALL getenv("HDF5_PARAPREFIX", filename)
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fnamelen = LEN_TRIM(filename)
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if ( fnamelen == 0 ) then
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filename = default_fname
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else
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filename = filename(1:fnamelen) // "/" // default_fname
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endif
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print *, "Using filename = ", filename
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!
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! Create the file collectively.
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!
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CALL h5fcreate_f(filename, H5F_ACC_TRUNC_F, file_id, error, access_prp = plist_id)
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CALL h5pclose_f(plist_id, error)
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!
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! Create the data space for the dataset.
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!
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CALL h5screate_simple_f(rank, dimsf, filespace, error)
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!
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! Create the dataset with default properties.
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!
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CALL h5dcreate_f(file_id, dsetname, H5T_NATIVE_INTEGER, filespace, &
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dset_id, error)
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!
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! Create property list for collective dataset write
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!
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CALL h5pcreate_f(H5P_DATASET_XFER_F, plist_id, error)
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CALL h5pset_dxpl_mpio_f(plist_id, H5FD_MPIO_COLLECTIVE_F, error)
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!
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! For independent write use
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! CALL h5pset_dxpl_mpio_f(plist_id, H5FD_MPIO_INDEPENDENT_F, error)
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!
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!
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! Write the dataset collectively.
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!
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CALL h5dwrite_f(dset_id, H5T_NATIVE_INTEGER, data, dimsfi, error, &
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xfer_prp = plist_id)
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!
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! Deallocate data buffer.
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!
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DEALLOCATE(data)
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!
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! Close resources.
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!
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CALL h5sclose_f(filespace, error)
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CALL h5dclose_f(dset_id, error)
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CALL h5pclose_f(plist_id, error)
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CALL h5fclose_f(file_id, error)
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! Attempt to remove the data file. Remove the line if the compiler
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! does not support it.
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!CALL unlink(filename)
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!
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! Close FORTRAN interface
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!
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CALL h5close_f(error)
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CALL MPI_FINALIZE(mpierror)
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END PROGRAM DATASET
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