1999-02-02 07:14:56 +08:00
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Release information for hdf5-1.1.x
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1998-07-18 03:03:43 +08:00
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------------------------------------
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1998-10-30 22:40:37 +08:00
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1999-02-02 07:14:56 +08:00
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CHANGES SINCE THE Version 1.0.0 RELEASE
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1999-02-17 22:11:52 +08:00
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* [Improvement]: configure sets up the Makefile in the parallel tests
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suit (testpar/) correctly. (Tested for O2K only.)
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1999-02-02 07:14:56 +08:00
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* [Bug-Fix]: Configure failed for all IRIX versions other than 6.3.
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It now configures correctly for all IRIX 6.x version.
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1998-10-30 22:40:37 +08:00
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CHANGES SINCE THE BETA RELEASE
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* Added fill values for datasets. For contiguous datasets fill value
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performance may be quite poor since the fill value is written to the
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entire dataset when the dataset is created. This will be remedied
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in a future version. Chunked datasets using fill values do not
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incur any additional overhead. See H5Pset_fill_value().
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* Multiple hdf5 files can be "mounted" on one another to create a
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larger virtual file. See H5Fmount().
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* Object names can be removed or changed but objects are never
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actually removed from the file yet. See H5Gunlink() and H5Gmove().
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* Added a tuning mechanism for B-trees to insure that sequential
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writes to chunked datasets use less overhead. See H5Pset_btree_ratios().
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* Various optimizations and bug fixes.
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1998-07-21 04:16:04 +08:00
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CHANGES SINCE THE SECOND ALPHA
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* Strided hyperslab selections in dataspaces now working.
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1998-01-30 05:56:06 +08:00
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1998-08-07 05:32:33 +08:00
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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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1998-09-09 03:15:44 +08:00
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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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1998-08-31 21:46:47 +08:00
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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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1998-07-01 05:30:28 +08:00
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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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1998-07-18 03:03:43 +08:00
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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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1998-07-01 05:30:28 +08:00
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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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1998-07-18 03:03:43 +08:00
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share objects. Dangling and recursive symbolic links are supported.
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1998-07-01 05:30:28 +08:00
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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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1998-07-13 14:03:41 +08:00
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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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1998-07-01 05:30:28 +08:00
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LIST OF API FUNCTIONS
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1998-01-30 05:56:06 +08:00
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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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1998-01-31 03:25:44 +08:00
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Library
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1998-06-23 11:41:22 +08:00
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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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1998-09-09 03:15:44 +08:00
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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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1998-01-31 03:25:44 +08:00
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1998-06-23 11:41:22 +08:00
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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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1998-09-09 03:15:44 +08:00
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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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1998-06-23 11:41:22 +08:00
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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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1998-01-30 05:56:06 +08:00
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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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1998-06-23 11:41:22 +08:00
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H5Dget_type - get data type
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H5Dget_create_plist - get dataset creation properties
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1998-01-30 05:56:06 +08:00
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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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1998-06-23 11:41:22 +08:00
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H5Dextend - extend a dataset
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Attributes
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1998-09-09 03:15:44 +08:00
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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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1998-06-23 11:41:22 +08:00
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H5Awrite - write values into an attribute
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H5Aread - read values from an attribute
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1998-09-09 03:15:44 +08:00
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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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1998-06-23 11:41:22 +08:00
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H5Aclose - close an attribute
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1998-01-30 05:56:06 +08:00
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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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1998-09-09 03:15:44 +08:00
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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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1998-06-23 11:41:22 +08:00
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H5Ewalk - iterate over the error stack
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1998-09-09 03:15:44 +08:00
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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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1998-01-30 05:56:06 +08:00
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Files
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1998-09-09 03:15:44 +08:00
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H5Fclose - close a file and release resources
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1998-01-30 05:56:06 +08:00
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H5Fcreate - create a new file
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1998-09-09 03:15:44 +08:00
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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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1998-01-30 05:56:06 +08:00
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H5Fis_hdf5 - determine if a file is an hdf5 file
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1998-09-09 03:15:44 +08:00
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H5Fopen - open an existing file
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1998-01-30 05:56:06 +08:00
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Groups
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H5Gclose - close a group and release resources
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1998-09-09 03:15:44 +08:00
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H5Gcreate - create a new group
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1998-01-30 05:56:06 +08:00
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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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1998-09-09 03:15:44 +08:00
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H5Giterate - iterate over the contents of a group
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1998-06-23 11:41:22 +08:00
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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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1998-09-09 03:15:44 +08:00
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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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1998-06-23 11:41:22 +08:00
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H5Gget_linkval - get the value of a soft link
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1998-09-09 03:15:44 +08:00
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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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1998-01-30 05:56:06 +08:00
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1998-07-15 13:42:11 +08:00
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Dataspaces
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1998-09-09 03:15:44 +08:00
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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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1998-07-15 13:42:11 +08:00
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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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1998-09-09 03:15:44 +08:00
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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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1998-07-15 13:42:11 +08:00
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Datatypes
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1998-01-30 05:56:06 +08:00
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H5Tclose - release data type resources
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1998-06-23 11:41:22 +08:00
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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
|
1998-01-30 05:56:06 +08:00
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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
|
1998-09-09 03:15:44 +08:00
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H5Tlock - lock type to prevent changes
|
1998-01-30 05:56:06 +08:00
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H5Tfind - find a data type conversion function
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1998-06-23 11:41:22 +08:00
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H5Tconvert - convert data from one type to another
|
1998-09-09 03:15:44 +08:00
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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
|
1998-01-30 05:56:06 +08:00
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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
|
1998-09-09 03:15:44 +08:00
|
|
|
H5Tinsert - insert scalar struct member
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|
H5Tinsert_array - insert array struct member
|
1998-01-30 05:56:06 +08:00
|
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|
H5Tpack - pack struct members
|
|
|
|
H5Tset_cset - set character set
|
|
|
|
H5Tset_ebias - set exponent bias
|
|
|
|
H5Tset_fields - set floating point fields
|
|
|
|
H5Tset_inpad - set inter-field padding
|
|
|
|
H5Tset_norm - set floating point normalization
|
|
|
|
H5Tset_offset - set bit offset within type
|
|
|
|
H5Tset_order - set byte order
|
|
|
|
H5Tset_pad - set padding type
|
|
|
|
H5Tset_precision - set precision in bits
|
|
|
|
H5Tset_sign - set integer sign type
|
|
|
|
H5Tset_size - set size in bytes
|
|
|
|
H5Tset_strpad - set string padding
|
|
|
|
|
1998-09-09 03:15:44 +08:00
|
|
|
Filters
|
|
|
|
H5Tregister - register a new filter method
|
|
|
|
|
|
|
|
Ragged Arrays (alpha)
|
|
|
|
H5Rcreate - create a new ragged array
|
|
|
|
H5Ropen - open an existing array
|
|
|
|
H5Rclose - close a ragged array
|
|
|
|
H5Rwrite - write to an array
|
|
|
|
H5Rread - read from an array
|
1998-06-23 11:41:22 +08:00
|
|
|
|
1998-01-30 05:56:06 +08:00
|
|
|
This release has been tested on UNIX platforms only; specifically:
|
|
|
|
Linux, FreedBSD, IRIX, Solaris & Dec UNIX.
|
1998-02-16 12:39:58 +08:00
|
|
|
|
|
|
|
|
1999-02-05 08:39:05 +08:00
|
|
|
RELEASE INFORMATION FOR PARALLEL HDF5
|
|
|
|
-------------------------------------
|
1998-02-16 12:39:58 +08:00
|
|
|
|
1998-09-09 03:15:44 +08:00
|
|
|
* Current release supports independent access to fixed dimension datasets
|
|
|
|
only.
|
1998-02-16 12:39:58 +08:00
|
|
|
|
1998-09-09 03:15:44 +08:00
|
|
|
* The comm and info arguments of H5Cset_mpi are not used. All parallel
|
|
|
|
I/O are done via MPI_COMM_WORLD. Access_mode for H5Cset_mpi can be
|
|
|
|
H5ACC_INDEPENDENT only.
|
1998-02-16 12:39:58 +08:00
|
|
|
|
1998-09-09 03:15:44 +08:00
|
|
|
* This release of parallel HDF5 has been tested on IBM SP2 and SGI
|
|
|
|
Origin 2000 systems. It uses the ROMIO version of MPIO interface
|
|
|
|
for parallel I/O supports.
|
1998-02-16 12:39:58 +08:00
|
|
|
|
1998-09-09 03:15:44 +08:00
|
|
|
* Useful URL's.
|
|
|
|
Parallel HDF webpage: "http://hdf.ncsa.uiuc.edu/Parallel_HDF/"
|
|
|
|
ROMIO webpage: "http://www.mcs.anl.gov/home/thakur/romio/"
|
1998-02-16 12:39:58 +08:00
|
|
|
|
1998-09-09 03:15:44 +08:00
|
|
|
* Some to-do items for future releases
|
|
|
|
support for Intel Teraflop platform.
|
|
|
|
support for unlimited dimension datasets.
|
|
|
|
support for file access via a communicator besides MPI_COMM_WORLD.
|
|
|
|
support for collective access to datasets.
|
|
|
|
support for independent create/open of datasets.
|
1999-02-05 08:39:05 +08:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
PLATFORMS SUPPORTED
|
|
|
|
-------------------
|
|
|
|
|
|
|
|
Platform(OS) C-Compiler Fortran-Compiler
|
|
|
|
------------ ---------- ----------------
|
|
|
|
Sun4(Solaris 2.5) CC SC4.0 f77 SC4.0
|
|
|
|
SGI (IRIX v6.5) CC 7.21 f77 7.21
|
|
|
|
SGI-Origin(IRIX64 v6.4-n32) CC 7.2.1.2m f77 7.2.1.2m
|
|
|
|
SGI-Origin(IRIX64 v6.4-64) CC 7.2.1.2m f77 7.2.1.2m
|