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---------------------- ./COPYING Reformatted as text instead of C. Removed zlib crew from the list of contributors since no zlib code is actually in the hdf5 library. ./INSTALL ./INSTALL.ascired ./MANIFEST Minor updates for Beta release including version number change. ./INSTALL_MAINT Added information about making a release. ./RELEASE Updated function list based on public header files. ./bin/checkposix Got rid of complaints about some obvious things. ./doc/html/H5.api.html ./doc/html/RM_H5F.html ./src/H5F.c ./src/H5Fpublic.h ./test/tfile.c Changed H5Fget_create_template() and H5Fget_access_template() to H5Fget_create_plist() and H5Fget_access_plist() since that conforms better to lots of other names. ./doc/html/Datatypes.html ./doc/html/ExternalFiles.html ./doc/html/Files.html ./doc/html/H5.api.html ./doc/html/H5.sample_code.html ./doc/html/RM_H5F.html ./doc/html/RM_H5Front.html Changed `template' to `property list', etc. ./doc/html/Ragged.html [NEW] Documentation for ragged arrays. ./src/H5Iprivate.h ./src/H5Ipublic.h ./src/H5I.c Changed the scope of some symbols to be more local. ./src/H5.c ./src/H5AC.c ./src/H5D.c ./src/H5E.c ./src/H5F.c ./src/H5Ffamily.c ./src/H5Fistore.c ./src/H5Flow.c ./src/H5Fsec2.c ./src/H5Fsplit.c ./src/H5Fstdio.c ./src/H5G.c ./src/H5Gnode.c ./src/H5HG.c ./src/H5I.c ./src/H5O.c ./src/H5Ocomp.c ./src/H5Odtype.c ./src/H5Oefl.c ./src/H5Omtime.c ./src/H5Oname.c ./src/H5P.c ./src/H5S.c ./src/H5Shyper.c ./src/H5Tbit.c ./src/H5Tconv.c ./src/H5V.c ./src/H5Z.c ./src/H5private.h Fixed some violations of our naming scheme by adding HD to the beginning of all Posix functions.
362 lines
15 KiB
Plaintext
362 lines
15 KiB
Plaintext
Release information for hdf5-1.0.23a
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------------------------------------
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CHANGES SINCE THE SECOND ALPHA
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* Strided hyperslab selections in dataspaces now working.
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* The compression API has been replaced with a more general filter
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API. See doc/html/Filters.html for details.
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* Alpha-quality 2d ragged arrays are implemented as a layer built on
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top of other hdf5 objects. The API and storage format will almost
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certainly change.
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* More debugging support including API tracing. See Debugging.html.
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* C and Fortran style 8-bit fixed-length character string types are
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supported with space or null padding or null termination and
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translations between them.
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* Added function H5Fflush() to write all cached data immediately to
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the file.
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* Datasets maintain a modification time which can be retrieved with
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H5Gstat().
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* The h5ls tool can display much more information, including all the
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values of a dataset.
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CHANGES SINCE THE FIRST ALPHA
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* Two of the packages have been renamed. The data space API has been
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renamed from `H5P' to `H5S' and the property list (template) API has
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been renamed from `H5C' to `H5P'.
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* The new attribute API `H5A' has been added. An attribute is a small
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dataset which can be attached to some other object (for instance, a
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4x4 transformation matrix attached to a 3-dimensional dataset, or an
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English abstract attached to a group).
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* The error handling API `H5E' has been completed. By default, when an
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API function returns failure an error stack is displayed on the
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standard error stream. The H5Eset_auto() controls the automatic
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printing and H5E_BEGIN_TRY/H5E_END_TRY macros can temporarily
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disable the automatic error printing.
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* Support for large files and datasets (>2GB) has been added. There
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is an html document that describes how it works. Some of the types
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for function arguments have changed to support this: all arguments
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pertaining to sizes of memory objects are `size_t' and all arguments
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pertaining to file sizes are `hsize_t'.
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* More data type conversions have been added although none of them are
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fine tuned for performance. There are new converters from integer
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to integer and float to float, but not between integers and floating
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points. A bug has been fixed in the converter between compound
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types.
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* The numbered types have been removed from the API: int8, uint8,
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int16, uint16, int32, uint32, int64, uint64, float32, and float64.
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Use standard C types instead. Similarly, the numbered types were
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removed from the H5T_NATIVE_* architecture; use unnumbered types
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which correspond to the standard C types like H5T_NATIVE_INT.
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* More debugging support was added. If tracing is enabled at
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configuration time (the default) and the HDF5_TRACE environment
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variable is set to a file descriptor then all API calls will emit
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the function name, argument names and values, and return value on
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that file number. There is an html document that describes this.
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If appropriate debugging options are enabled at configuration time,
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some packages will display performance information on stderr.
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* Data types can be stored in the file as independent objects and
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multiple datasets can share a data type.
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* The raw data I/O stream has been implemented and the application can
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control meta and raw data caches, so I/O performance should be
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improved from the first alpha release.
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* Group and attribute query functions have been implemented so it is
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now possible to find out the contents of a file with no prior
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knowledge.
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* External raw data storage allows datasets to be written by other
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applications or I/O libraries and described and accessed through
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HDF5.
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* Hard and soft (symbolic) links are implemented which allow groups to
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share objects. Dangling and recursive symbolic links are supported.
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* User-defined data compression is implemented although we may
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generalize the interface to allow arbitrary user-defined filters
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which can be used for compression, checksums, encryption,
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performance monitoring, etc. The publicly-available `deflate'
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method is predefined if the GNU libz.a can be found at configuration
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time.
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* The configuration scripts have been modified to make it easier to
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build debugging vs. production versions of the library.
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* The library automatically checks that the application was compiled
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with the correct version of header files.
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Parallel HDF5 Changes
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* Parallel support for fixed dimension datasets with contiguous or
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chunked storages. Also, support unlimited dimension datasets which
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must use chunk storage. No parallel support for compressed datasets.
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* Collective data transfer for H5Dread/H5Dwrite. Collective access
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support for datasets with contiguous storage only, thus only fixed
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dimension datasets for now.
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* H5Pset_mpi and H5Pget_mpi no longer have the access_mode
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argument. It is taken over by the data-transfer property list
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of H5Dread/H5Dwrite.
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* New functions H5Pset_xfer and H5Pget_xfer to handle the
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specification of independent or collective data transfer_mode
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in the dataset transfer properties list. The properties
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list can be used to specify data transfer mode in the H5Dwrite
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and H5Dread function calls.
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* Added parallel support for datasets with chunked storage layout.
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When a dataset is extend in a PHDF5 file, all processes that open
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the file must collectively call H5Dextend with identical new dimension
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sizes.
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LIST OF API FUNCTIONS
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The following functions are implemented. Errors are returned if an
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attempt is made to use some feature which is not implemented and
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printing the error stack will show `not implemented yet'.
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Library
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H5check - check that lib version matches header version
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H5open - initialize library (happens automatically)
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H5close - shut down the library (happens automatically)
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H5dont_atexit - don't call H5close on exit
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H5get_libversion - retrieve library version info
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H5check_version - check for specific library version
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Property Lists
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H5Pclose - release template resources
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H5Pcopy - copy a template
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H5Pcreate - create a new template
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H5Pget_chunk - get chunked storage properties
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H5Pset_chunk - set chunked storage properties
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H5Pget_class - get template class
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H5Pget_istore_k - get chunked storage properties
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H5Pset_istore_k - set chunked storage properties
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H5Pget_layout - get raw data layout class
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H5Pset_layout - set raw data layout class
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H5Pget_sizes - get address and size sizes
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H5Pset_sizes - set address and size sizes
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H5Pget_sym_k - get symbol table storage properties
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H5Pset_sym_k - set symbol table storage properties
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H5Pget_userblock - get user-block size
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H5Pset_userblock - set user-block size
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H5Pget_version - get file version numbers
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H5Pget_alignment - get data alignment properties
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H5Pset_alignment - set data alignment properties
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H5Pget_external_count- get count of external data files
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H5Pget_external - get information about an external data file
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H5Pset_external - add a new external data file to the list
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H5Pget_driver - get low-level file driver class
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H5Pget_stdio - get properties for stdio low-level driver
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H5Pset_stdio - set properties for stdio low-level driver
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H5Pget_sec2 - get properties for sec2 low-level driver
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H5Pset_sec2 - set properties for sec2 low-level driver
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H5Pget_core - get properties for core low-level driver
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H5Pset_core - set properties for core low-level driver
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H5Pget_split - get properties for split low-level driver
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H5Pset_split - set properties for split low-level driver
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H5P_get_family - get properties for family low-level driver
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H5P_set_family - set properties for family low-level driver
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H5Pget_cache - get meta- and raw-data caching properties
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H5Pset_cache - set meta- and raw-data caching properties
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H5Pget_buffer - get raw-data I/O pipe buffer properties
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H5Pset_buffer - set raw-data I/O pipe buffer properties
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H5Pget_preserve - get type conversion preservation properties
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H5Pset_preserve - set type conversion preservation properties
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H5Pget_nfilters - get number of raw data filters
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H5Pget_filter - get raw data filter properties
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H5Pset_filter - set raw data filter properties
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H5Pset_deflate - set deflate compression filter properties
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H5Pget_mpi - get MPI-IO properties
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H5Pset_mpi - set MPI-IO properties
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H5Pget_xfer - get data transfer properties
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H5Pset_xfer - set data transfer properties
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Datasets
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H5Dclose - release dataset resources
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H5Dcreate - create a new dataset
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H5Dget_space - get data space
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H5Dget_type - get data type
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H5Dget_create_plist - get dataset creation properties
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H5Dopen - open an existing dataset
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H5Dread - read raw data
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H5Dwrite - write raw data
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H5Dextend - extend a dataset
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Attributes
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H5Acreate - create a new attribute
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H5Aopen_name - open an attribute by name
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H5Aopen_idx - open an attribute by number
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H5Awrite - write values into an attribute
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H5Aread - read values from an attribute
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H5Aget_space - get attribute data space
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H5Aget_type - get attribute data type
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H5Aget_name - get attribute name
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H5Anum_attrs - return the number of attributes for an object
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H5Aiterate - iterate over an object's attributes
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H5Adelete - delete an attribute
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H5Aclose - close an attribute
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Errors
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H5Eclear - clear the error stack
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H5Eprint - print an error stack
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H5Eget_auto - get automatic error reporting settings
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H5Eset_auto - set automatic error reporting
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H5Ewalk - iterate over the error stack
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H5Ewalk_cb - the default error stack iterator function
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H5Eget_major - get the message for the major error number
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H5Eget_minor - get the message for the minor error number
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Files
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H5Fclose - close a file and release resources
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H5Fcreate - create a new file
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H5Fget_create_plist - get file creation property list
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H5Fget_access_plist - get file access property list
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H5Fis_hdf5 - determine if a file is an hdf5 file
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H5Fopen - open an existing file
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Groups
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H5Gclose - close a group and release resources
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H5Gcreate - create a new group
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H5Gopen - open an existing group
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H5Gpop - pop a group from the cwg stack
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H5Gpush - push a group onto the cwg stack
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H5Gset - set the current working group (cwg)
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H5Giterate - iterate over the contents of a group
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H5Gmove - change the name of some object
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H5Glink - create a hard or soft link to an object
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H5Gunlink - break the link between a name and an object
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H5Gget_objinfo - get information about a group entry
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H5Gget_linkval - get the value of a soft link
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H5Gget_comment - get the comment string for an object
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H5Gset_comment - set the comment string for an object
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Dataspaces
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H5Screate - create a new data space
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H5Scopy - copy a data space
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H5Sclose - release data space
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H5Screate_simple - create a new simple data space
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H5Sset_space - set simple data space extents
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H5Sis_simple - determine if data space is simple
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H5Sset_extent_simple - set simple data space dimensionality and size
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H5Sget_simple_extent_npoints - get number of points in simple extent
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H5Sget_simple_extent_ndims - get simple data space dimensionality
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H5Sget_simple_extent_dims - get simple data space size
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H5Sget_simple_extent_type - get type of simple extent
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H5Sset_extent_none - reset extent to be empty
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H5Sextent_copy - copy the extent from one data space to another
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H5Sget_select_npoints - get number of points selected for I/O
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H5Sselect_hyperslab - set hyperslab dataspace selection
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H5Sselect_elements - set element sequence dataspace selection
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H5Sselect_all - select entire extent for I/O
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H5Sselect_none - deselect all elements of extent
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H5Soffset_simple - set selection offset
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H5Sselect_valid - determine if selection is valid for extent
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Datatypes
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H5Tclose - release data type resources
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H5Topen - open a named data type
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H5Tcommit - name a data type
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H5Tcommitted - determine if a type is named
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H5Tcopy - copy a data type
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H5Tcreate - create a new data type
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H5Tequal - compare two data types
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H5Tlock - lock type to prevent changes
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H5Tfind - find a data type conversion function
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H5Tconvert - convert data from one type to another
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H5Tregister_hard - register specific type conversion function
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H5Tregister_soft - register general type conversion function
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H5Tunregister - remove a type conversion function
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H5Tget_overflow - get function that handles overflow conv. cases
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H5Tset_overflow - set function to handle overflow conversion cases
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H5Tget_class - get data type class
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H5Tget_cset - get character set
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H5Tget_ebias - get exponent bias
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H5Tget_fields - get floating point fields
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H5Tget_inpad - get inter-field padding
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H5Tget_member_dims - get struct member dimensions
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H5Tget_member_name - get struct member name
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H5Tget_member_offset - get struct member byte offset
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H5Tget_member_type - get struct member type
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H5Tget_nmembers - get number of struct members
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H5Tget_norm - get floating point normalization
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H5Tget_offset - get bit offset within type
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H5Tget_order - get byte order
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H5Tget_pad - get padding type
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H5Tget_precision - get precision in bits
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H5Tget_sign - get integer sign type
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H5Tget_size - get size in bytes
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H5Tget_strpad - get string padding
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H5Tinsert - insert scalar struct member
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H5Tinsert_array - insert array struct member
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H5Tpack - pack struct members
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H5Tset_cset - set character set
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H5Tset_ebias - set exponent bias
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H5Tset_fields - set floating point fields
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H5Tset_inpad - set inter-field padding
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H5Tset_norm - set floating point normalization
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H5Tset_offset - set bit offset within type
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H5Tset_order - set byte order
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H5Tset_pad - set padding type
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H5Tset_precision - set precision in bits
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H5Tset_sign - set integer sign type
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H5Tset_size - set size in bytes
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H5Tset_strpad - set string padding
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Filters
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H5Tregister - register a new filter method
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Ragged Arrays (alpha)
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H5Rcreate - create a new ragged array
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H5Ropen - open an existing array
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H5Rclose - close a ragged array
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H5Rwrite - write to an array
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H5Rread - read from an array
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This release has been tested on UNIX platforms only; specifically:
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Linux, FreedBSD, IRIX, Solaris & Dec UNIX.
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Release information for parallel HDF5
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-------------------------------------
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* Current release supports independent access to fixed dimension datasets
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only.
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* The comm and info arguments of H5Cset_mpi are not used. All parallel
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I/O are done via MPI_COMM_WORLD. Access_mode for H5Cset_mpi can be
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H5ACC_INDEPENDENT only.
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* This release of parallel HDF5 has been tested on IBM SP2 and SGI
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Origin 2000 systems. It uses the ROMIO version of MPIO interface
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for parallel I/O supports.
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* Useful URL's.
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Parallel HDF webpage: "http://hdf.ncsa.uiuc.edu/Parallel_HDF/"
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ROMIO webpage: "http://www.mcs.anl.gov/home/thakur/romio/"
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* Some to-do items for future releases
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support for Intel Teraflop platform.
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support for unlimited dimension datasets.
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support for file access via a communicator besides MPI_COMM_WORLD.
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support for collective access to datasets.
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support for independent create/open of datasets.
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