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! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
! Copyright by The HDF Group. *
! Copyright by the Board of Trustees of the University of Illinois. *
! All rights reserved. *
! *
! This file is part of HDF5. The full HDF5 copyright notice, including *
! terms governing use, modification, and redistribution, is contained in *
! the files COPYING and Copyright.html. COPYING can be found at the root *
! of the source code distribution tree; Copyright.html can be found at the *
! root level of an installed copy of the electronic HDF5 document set and *
! is linked from the top-level documents page. It can also be found at *
! http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
! access to either file, you may request a copy from help@hdfgroup.org. *
! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
!//////////////////////////////////////////////////////////
! main program for parallel HDF5 Fortran tests
!//////////////////////////////////////////////////////////
PROGRAM parallel_test
USE hdf5
USE mpi
IMPLICIT NONE
INTEGER :: mpierror ! MPI hdferror flag
INTEGER :: hdferror ! HDF hdferror flag
LOGICAL :: do_collective ! use collective MPI I/O
LOGICAL :: do_chunk ! use chunking
INTEGER :: nerrors = 0 ! number of errors
INTEGER :: mpi_size ! number of processes in the group of communicator
INTEGER :: mpi_rank ! rank of the calling process in the communicator
INTEGER :: length = 12000 ! length of array
!//////////////////////////////////////////////////////////
! initialize MPI
!//////////////////////////////////////////////////////////
CALL mpi_init(mpierror)
IF (mpierror .NE. MPI_SUCCESS) THEN
WRITE(*,*) "MPI_INIT *FAILED*"
ENDIF
CALL mpi_comm_rank( MPI_COMM_WORLD, mpi_rank, mpierror )
IF (mpierror .NE. MPI_SUCCESS) THEN
WRITE(*,*) "MPI_COMM_RANK *FAILED* Process = ", mpi_rank
ENDIF
CALL mpi_comm_size( MPI_COMM_WORLD, mpi_size, mpierror )
IF (mpierror .NE. MPI_SUCCESS) THEN
WRITE(*,*) "MPI_COMM_SIZE *FAILED* Process = ", mpi_rank
ENDIF
!//////////////////////////////////////////////////////////
! initialize the HDF5 fortran interface
!//////////////////////////////////////////////////////////
CALL h5open_f(hdferror)
!//////////////////////////////////////////////////////////
! test write/read dataset by hyperslabs with independent MPI I/O
!//////////////////////////////////////////////////////////
IF (mpi_rank == 0) WRITE(*,*) 'Writing/reading dataset by hyperslabs (contiguous layout, independent MPI I/O)'
do_collective = .FALSE.
do_chunk = .FALSE.
CALL hyper(length, do_collective, do_chunk, mpi_size, mpi_rank, nerrors)
!//////////////////////////////////////////////////////////
! test write/read dataset by hyperslabs with collective MPI I/O
!//////////////////////////////////////////////////////////
IF (mpi_rank == 0) WRITE(*,*) 'Writing/reading dataset by hyperslabs (contiguous layout, collective MPI I/O)'
do_collective = .TRUE.
do_chunk = .FALSE.
CALL hyper(length, do_collective, do_chunk, mpi_size, mpi_rank, nerrors)
!//////////////////////////////////////////////////////////
! test write/read dataset by hyperslabs with independent MPI I/O
!//////////////////////////////////////////////////////////
IF (mpi_rank == 0) WRITE(*,*) 'Writing/reading dataset by hyperslabs (chunk layout, independent MPI I/O)'
do_collective = .FALSE.
do_chunk = .TRUE.
CALL hyper(length, do_collective, do_chunk, mpi_size, mpi_rank, nerrors)
!//////////////////////////////////////////////////////////
! test write/read dataset by hyperslabs with collective MPI I/O
!//////////////////////////////////////////////////////////
IF (mpi_rank == 0) WRITE(*,*) 'Writing/reading dataset by hyperslabs (chunk layout, collective MPI I/O)'
do_collective = .TRUE.
do_chunk = .TRUE.
CALL hyper(length, do_collective, do_chunk, mpi_size, mpi_rank, nerrors)
!//////////////////////////////////////////////////////////
! test write/read several datasets (independent MPI I/O)
!//////////////////////////////////////////////////////////
IF (mpi_rank == 0) WRITE(*,*) 'Writing/reading several datasets (contiguous layout, independent MPI I/O)'
do_collective = .FALSE.
do_chunk = .FALSE.
CALL multiple_dset_write(length, do_collective, do_chunk, mpi_size, mpi_rank, nerrors)
!//////////////////////////////////////////////////////////
! close HDF5 interface
!//////////////////////////////////////////////////////////
CALL h5close_f(hdferror)
!//////////////////////////////////////////////////////////
! close MPI
!//////////////////////////////////////////////////////////
IF (nerrors == 0) THEN
CALL mpi_finalize(mpierror)
IF (mpierror .NE. MPI_SUCCESS) THEN
WRITE(*,*) "MPI_FINALIZE *FAILED* Process = ", mpi_rank
ENDIF
ELSE
WRITE(*,*) 'Errors detected in process ', mpi_rank
CALL mpi_abort(MPI_COMM_WORLD, 1, mpierror)
IF (mpierror .NE. MPI_SUCCESS) THEN
WRITE(*,*) "MPI_ABORT *FAILED* Process = ", mpi_rank
ENDIF
ENDIF
!//////////////////////////////////////////////////////////
! end main program
!//////////////////////////////////////////////////////////
END PROGRAM parallel_test
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