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MS-Windows users can read it more readily.

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-
- 
-                       HDF5 Release 1.4-Beta3
-
-
-INTRODUCTION
-
-This document describes the differences between HDF5-1.2.0 and
-HDF5-1.4-Beta3, and contains information on the platforms tested and
-known problems in HDF5-1.4-Beta3. For more details check the HISTORY 
-file in the HDF5 source.
-
-The HDF5 documentation can be found on the NCSA ftp server
-(ftp.ncsa.uiuc.edu) in the directory:
-
-     /HDF/HDF5/docs/
-
-For more information look at the HDF5 home page at:
-   
-    http://hdf.ncsa.uiuc.edu/HDF5/
-
-If you have any questions or comments, please send them to:
-
-    hdfhelp@ncsa.uiuc.edu
-
-
-CONTENTS
-
-- New Features
-- h4toh5 Utility 
-- F90 Support
-- C++ Support
-- Bug Fixes since HDF5-1.2.0 
-- Bug Fixes since HDF5-1.4.0-beta2
-- Platforms Tested
-- Known Problems
-
-New Features
-============
-   * The Virtual File Layer, VFL, was added to replace the old file
-     drivers. It also provides an API for user defined file drivers.
-   * New features added to snapshots. Use 'snapshot help' to see a
-     complete list of features.
-   * Improved configure to detect if MPIO routines are available when
-     parallel mode is requested.
-   * Added Thread-Safe support. Phase I implemented.
-   * Added data sieve buffering to raw data I/O path. This is enabled
-     for all VFL drivers except the mpio & core drivers. Setting the
-     sieve buffer size is controlled with the new API function,
-     H5Pset_sieve_buf_size(), and retrieved with H5Pget_sieve_buf_size().
-   * Added new Virtual File Driver, Stream VFD, to send/receive entire
-     HDF5 files via socket connections.
-   * As parts of VFL, HDF-GASS and HDF-SRB are also added to this
-     release. To find out details, please read INSTALL_VFL file. 
-   * Increased maximum number of dimensions for a dataset (H5S_MAX_RANK)
-     from 31 to 32 to align with HDF4 & netCDF.
-   * Added 'query' function to VFL drivers.  Also added 'type' parameter to
-     VFL 'read' & 'write' calls, so they are aware of the type of data
-     being accessed in the file.  Updated the VFL document also.
-   * A new h4toh5 uitlity, to convert HDF4 files to analogous HDF5 files.
-   * Added a new array datatype to the datatypes which can be created.  Removed
-     "array fields" from compound datatypes (use an array datatype instead).
-   * Parallel HDF5 works correctly with mpich-1.2.1 on Solaris, SGI, Linux.
-
-h4toh5 Utility 
-==============
-
-    The h4toh5 utility is a new utility that converts an HDF4 file to an 
-    HDF5 file.  For details, see the document, "Mapping HDF4 Objects to 
-    HDF5 Objects":
-       http://hdf.ncsa.uiuc.edu/HDF5/papers/H4-H5MappingGuidelines.pdf
-
-    Known Limitations of the h4toh5 beta release
-    ---------------------------------------------
-
-    1. Error Handling
-
-    Error reporting is minimal.
-
-    2. String Datatype
-
-    HDF4 has no 'string' type. String valued data are usually defined as
-    an array of 'char' in HDF4. The h4toh5 utility will generally map
-    these to HDF5 'String' types rather than array of char, with the
-    following additional rules:
-
-       * For the data of an HDF4 SDS, image, and palette, if the data is
-	 declared 'DFNT_CHAR8' it will be assumed to be integer and
-	 will be an H5T_INTEGER type.
-       * For attributes of any HDF4 object, data of type 'DFNT_CHAR8'
-	 will be converted to an HDF5 'H5T_STRING' type.
-       * For an HDF4 Vdata, it is difficult to determine whether data 
-	 of type 'DFNT_CHAR8' is intended to be bytes or characters.
-	 The h4toh5 utility will consider them to be C characters, and
-	 will convert them to an HDF5 'H5T_STRING' type.
-
-
-    3. Compression, Chunking and External Storage
-
-    Chunking is supported, but compression and external storage is not.
-
-    An HDF4 object that uses chunking will be converted to an HDF5 file
-    with analogous chunked storage.
-
-    An HDF4 object that uses compression will be converted to an
-    uncompressed HDF5 object.  
-
-    An HDF4 object that uses external storage will be converted to an
-    HDF5 object without external storage.  
-
-    4. Memory Use
-
-    The beta version of the h4toh5 utility copies data from HDF4 objects
-    in a single read followed by a single write to the HDF5 object. For
-    large objects, this requires a very large amount of memory, which may
-    be extremely slow or fail on some platforms.
-
-    Note that a dataset that has only been partly written will
-    be read completely, including uninitialized data, and all the
-    data will be written to the HDF5 object.
-
-    5. Platforms
-
-    The h4toh5 utility requires HDF5.1.4 and HDF4r1.4
-
-    The beta h4toh5 utility has been tested on Solaris 2.6, Solaris 2.5,
-    Irix 6.5, HPUX 11.0, DEC Unix, FreeBSD, Windows 2000(NT5.0),Windows NT 
-    and Windows 98.
-
-F90 Support
-===========
- 
-    This is the first release of the HDF5 Library with fully integrated 
-    F90 API support.  The Fortran Library is created when the 
-    --enable-fortran flag is specified during configuration.
-
-    Not all F90 subroutines are implemented. Please refer to the HDF5 
-    Reference Manual for more details.
-   
-    F90 APIs are available for the Solaris 2.6 and 2.7, Linux, DEC UNIX, 
-    T3E, J90 and O2K (64 bit option only) platforms. The Parallel version of 
-    the HDF5 F90 Library is supported on the O2K and T3E platforms.
-
-    Changes since the last prototype release (July 2000)
-    ----------------------------------------------------
-
-       * h5open_f and h5close_f must be called instead of h5init_types and 
-         h5close_types.
-
-       * The following subroutines are no longer available: 
-             h5pset_xfer_f
-             h5pget_xfer_f
-             h5pset_mpi_f
-             h5pget_mpi_f
-             h5pset_stdio_f
-             h5pget_stdio_f
-             h5pset_sec2_f
-             h5pget_sec2_f
-             h5pset_core_f
-             h5pget_core_f
-             h5pset_family_f
-             h5pget_family_f
-             
-       * The following functions have been added:
-             h5pset_fapl_mpio_f
-             h5pget_fapl_mpio_f
-             h5pset_dxpl_mpio_f
-             h5pget_dxpl_mpio_f
-        
-       * In the previous HDF5 F90 releases, the implementation of object 
-         references and dataset region references was not portable. This 
-         release introduces a portable implementation, but it also introduces 
-         changes to the read/write APIs that handle references.  If object or 
-         dataset region references are written or read to/from an HDF5 file, 
-         h5dwrite_f and h5dread_f must use the extra parameter, n, for the 
-         buffer size:
-
-            h5dwrite(read)_f(dset_id, mem_type_id, buf, n, hdferr, &
-                                                       ^^^ 
-                             mem_space_id, file_space_id, xfer_prp)
-
-         For other datatypes the APIs were not changed. 
-              
-             
-C++ Support
-===========
-
-        This is the first release of the HDF5 Library with fully integrated 
-        C++ API support. The HDF5 C++ library is built when the --enable-cxx
-        flag is specified during configuration.
-
-        Check the HDF5 Reference Manual for available C++ documentation.
-
-        C++ APIs are available for Solaris 2.6 and 2.7, Linux, and FreeBSD. 
- 
-
-Bug Fixes since HDF5-1.2.0
-==========================
-
-Library
--------
-
-   * The function H5Pset_mpi is renamed as H5Pset_fapl_mpio.
-   * Corrected a floating point number conversion error for the Cray J90
-     platform. The error did not convert the value 0.0 correctly.
-   * Error was fixed which was not allowing dataset region references to
-     have their regions retrieved correctly.
-   * Corrected a bug that caused non-parallel file drivers to fail in
-     the parallel version.
-   * Added internal free-lists to reduce memory required by the library
-     and H5garbage_collect API function
-   * Fixed error in H5Giterate which was not updating the "index"
-     parameter correctly.
-   * Fixed error in hyperslab iteration which was not walking through the
-     correct sequence of array elements if hyperslabs were staggered in a
-     certain pattern
-   * Fixed several other problems in hyperslab iteration code.
-   * Fixed another H5Giterate bug which was causes groups with large
-     numbers of objects in them to misbehave when the callback function
-     returned non-zero values.
-   * Changed return type of H5Aiterate and H5A_operator_t typedef to be
-     herr_t, to align them with the dataset and group iterator functions.
-   * Changed H5Screate_simple and H5Sset_extent_simple to not allow
-     dimensions of size 0 with out the same dimension being unlimited.
-   * QAK - 4/19/00 - Improved metadata hashing & caching algorithms to
-     avoid many hash flushes and also remove some redundant I/O when
-     moving metadata blocks in the file.
-   * The "struct(opt)" type conversion function which gets invoked for
-     certain compound datatype conversions was fixed for nested compound
-     types. This required a small change in the datatype conversion
-     function API.
-   * Re-wrote lots of the hyperslab code to speed it up quite a bit.
-   * Added bounded garbage collection for the free lists when they run
-     out of memory and also added H5set_free_list_limits API call to
-     allow users to put an upper limit on the amount of memory used for
-     free lists.
-   * Checked for non-existent or deleted objects when dereferencing one
-     with object or region references and disallow dereference.
-   * "Time" datatypes (H5T_UNIX_D*) were not being stored and retrieved
-     from object headers correctly, fixed now.
-   * Fixed H5Dread or H5Dwrite calls with H5FD_MPIO_COLLECTIVE requests
-     that may hang because not all processes are transfer the same amount
-     of data. (A.K.A. prematured collective return when zero amount data
-     requested.) Collective calls that may cause hanging is done via the
-     corresponding MPI-IO independent calls.
-   * If configure with --enable-debug=all, couple functions would issue
-     warning messages to "stderr" that the operation is expensive time-wise.
-     This messed up applications (like testings) that did not expect the
-     extra output. It is changed so that the warning will be printed only
-     if the corresponding Debug key is set.
-
-Configuration
--------------
-
-   * The hdf5.h include file was fixed to allow the HDF5 Library to be
-     compiled with other libraries/applications that use GNU autoconf. 
-   * Configuration for parallel HDF5 was improved. Configure now attempts
-     to link with libmpi.a and/or libmpio.a as the MPI libraries by
-     default. It also uses "mpirun" to launch MPI tests by default. It
-     tests to link MPIO routines during the configuration stage, rather
-     than failing later as before. One can just do "./configure
-     --enable-parallel" if the MPI library is in the system library.
-   * Added support for pthread library and thread-safe option.
-   * The libhdf5.settings file shows the correct machine byte-sex.
-   * Added option "--enable-stream-vfd" to configure w/o the Stream VFD.
-     For Solaris, added -lsocket to the LIBS list of libraries.
-
-Tools
------
-    * h5dump now accepts both short and long command-line parameters:
-          -h, --help          Print a usage message and exit
-          -B, --bootblock     Print the content of the boot block
-          -H, --header        Print the header only; no data is displayed
-          -i, --object-ids    Print the object ids
-          -V, --version       Print version number and exit
-          -a P, --attribute=P Print the specified attribute
-          -d P, --dataset=P   Print the specified dataset
-          -g P, --group=P     Print the specified group and all members
-          -l P, --soft-link=P Print the value(s) of the specified soft link
-          -o F, --output=F    Output raw data into file F
-          -t T, --datatype=T  Print the specified named data type
-          -w #, --width=#     Set the number of columns
-
-      P - is the full path from the root group to the object.
-      T - is the name of the data type.
-      F - is a filename.
-      # - is an integer greater than 1.
-    * A change from the old way command line parameters were interpreted
-      is that multiple attributes, datasets, groups, soft-links, and
-      object-ids cannot be specified with just one flag but you have to
-      use a flag with each object. I.e., instead of doing this:
-
-        h5dump -a /attr1 /attr2 foo.h5
-
-      do this:
-
-        h5dump -a /attr1 -a /attr2 foo.h5
-
-      The cases are similar for the other object types.
-    * h5dump correctly displays compound datatypes.
-    * Corrected an error in h5toh4 which did not convert the 32bits
-      int from HDF5 to HDF4 corectly for the T3E platform.
-    * h5dump correctly displays the committed copy of predefined types
-      correctly.
-    * Added an option, -V, to show the version information of h5dump.
-    * Fixed a core dumping bug of h5toh4 when executed on platforms like 
-      TFLOPS.
-    * The test script for h5toh4 used to not able to detect the hdp
-      dumper command was not valid.  It now detects and reports the
-      failure of hdp execution.
-    * Merged the tools with the 1.2.2 branch. Required adding new
-      macros, VERSION12 and VERSION13, used in conditional compilation.
-      Updated the Windows project files for the tools.            
-    * h5dump displays opaque and bitfield data correctly.
-    * h5dump and h5ls can browse files created with the Stream VFD
-      (eg. "h5ls <hostname>:<port>").
-    * h5dump has a new feature "-o <filename>" which outputs the raw data
-      of the dataset into ascii text file <filename>.
-    * h5toh4 used to converts hdf5 strings type to hdf4 DFNT_INT8 type.
-      Corrected to produce hdf4 DFNT_CHAR type instead.
-    * h5dump and h5ls displays array data correctly.
-
-Documentation
--------------
-
-    * User's Guide and Reference Manual were updated. 
-      See doc/html/PSandPDF/index.html for more details. 
-
-   
-Bug Fixes since HDF5-1.4.0-beta2
-================================
-
-    * Corrected configuration error which was not including compression support
-        correctly.
-    * Cleaned up lots of warnings.
-    * Changed a few h5dump command line switches and added long versions of
-        the switches.
-    * Changed parameters for H5Tconvert, H5Pset_bufer and H5Pget_buffer from
-        size_t to hsize_t
-    * Fixed fairly obscure bug in hyperslab I/O which could (in rare cases)
-        not copy all the data during a transfer.
-    * Removed ragged array code from library.
-    * F90 library and module files are installed properly now on all supported platforms.
-
-Platforms Tested
-================
-
- Note: Due to the nature of the bug fixes, only static versions of the
-       library and tools were tested.
-
-
-  AIX 4.3.2 (IBM SP)            mpcc_r 3.6.6
-  Cray T3E sn6711 2.0.5.43      Cray Standard C Version 6.4.0.0
-                                Cray Fortran Version 3.4.0.2
-  FreeBSD 4.2                   gcc 2.95.2
-                                g++ 2.95.2
-  HP-UX B.10.20                 HP C  HP92453-01 A.10.32.30
-  HP-UX B.11.00                 HP C  HP92453-01 A.11.00.13
-  IRIX 6.5                      MIPSpro cc 7.30
-  IRIX64 6.5 (64 & n32)         MIPSpro cc 7.3.1m
-                                mpt.1.4.0.2
-                                mpich-1.2.1
-  Linux 2.2.16-3smp             gcc-2.95.2
-                                g++ 2.95.2
-                                pgf90 3.1-3
-  OSF1 V4.0                     DEC-V5.2-040
-                                Digital Fortran 90 V4.1-270
-  SunOS 5.6                     WorkShop Compilers 5.0 98/12/15 C 5.0 
-  (Solaris 2.6)                 WorkShop Compilers 5.0 99/10/25 Fortran 90
-                                       2.0 Patch 107356-04
-                                Workshop Compilers 5.0 98/12/15 C++ 5.0
-  SunOS 5.7                     WorkShop Compilers 5.0 98/12/15 C 5.0
-  (Solaris 2.7)                 WorkShop Compilers 5.0 99/10/25 Fortran 90
-                                       2.0 Patch 107356-04
-                                Workshop Compilers 5.0 98/12/15 C++ 5.0
-  TFLOPS 3.3                    mpich-1.2.0 with local changes
-  Windows NT4.0, 2000 (NT5.0)   MSVC++ 6.0
-  Windows 98                    MSVC++ 6.0
-
-Known Problems
-==============
-
-* The --enable-static-exec configure flag fails to compile for Solaris
-  platforms. This is due to the fact that not all of the system
-  libraries on Solaris are available in a static format.
-
-  The --enable-static-exec configure flag also fails to correctly compile
-  on Linux platforms using the gcc-2.95.2 compiler.
-  
-  It is suggested that you don't use this option on these platforms
-  during configuration.
-
-* With the gcc 2.95.2 compiler, HDF 5 uses the `-ansi' flag during
-  compilation. The ANSI version of the compiler complains about not being
-  able to handle the `long long' datatype with the warning:
-
-        warning: ANSI C does not support `long long'
-  
-  This warning is innocuous and can be safely ignored.
-
-* SunOS 5.6 with C WorkShop Compilers 4.2:  Hyperslab selections will 
-  fail if library is compiled using optimization of any level.
-
-* When building hdf5 tools and applications on windows platform, a linking
-warning: defaultlib "LIBC" conflicts with use of other libs will appear
-on debug version when running VC++6.0. This warning doesn't affect building
-and testing hdf5 applications. We are investigating this now.
-* The Stream VFD was not tested yet under Windows.
-  It is not supported in the TFLOPS machine.
-
-* Shared library option is broken for IBM SP and some Origin 2000 platforms.
-  One needs to run ./configure with '--disable-shared'
-
-* The ./dsets tests failed in the TFLOPS machine if the test program,
-  dsets.c, is compiled with the -O option.  The hdf5 library still works
-  correctly with the -O option.  The test program works fine if it is
-  compiled with -O1 or -O0.  Only -O (same as -O2) causes the test
-  program to fail.
-
-* Certain platforms give false negatives when testing h5ls:
-    - Solaris x86 2.5.1, Cray T3E and Cray J90 give errors during testing
-        when displaying object references in certain files.  These are benign 
-        differences due to the difference in sizes of the objects created on
-        those platforms.  h5ls appears to be dumping object references
-        correctly.
-    - Cray J90 (and Cray T3E?) give errors during testing when displaying
-        some floating-point values.  These are benign differences due to the
-        different precision in the values displayed and h5ls appears to be
-        dumping floating-point numbers correctly.
-
-* Before building HDF5 F90 Library from source on Crays (T3E and J90) 
-  replace H5Aff.f90, H5Dff.f90 and H5Pff.f90 files in the fortran/src subdirectory 
-  in the top level directory with the Cray-specific files from the 
-  ftp://hdf.ncsa.uiuc.edu/pub/ougoing/hdf5/hdf5-1.4.0-beta/F90_source_for_Crays
-  directory.