Release of HDF5 1.10.2 – Newsletter #160

The HDF5 1.10.2 release is now available for download from: https://www.hdfgroup.org/downloads/hdf5/
The source code (only) can also be obtained from: https://portal.hdfgroup.org/display/support/HDF5+1.10.2
User documentation for HDF5 1.10 can be accessed here: https://portal.hdfgroup.org/display/HDF5/

This release contains several major new features and changes, including the following:

• Parallel HDF5 includes several improvements:
  • Compressed datasets can now be written using the MPI I/O driver.
  • Optimizations were added to improve performance of the HDF5 parallel open/close/flush operations.
  • MPI I/O transfers now allow reading or writing of more than 2GB of data in a single I/O operation.
• The following vulnerabilities were addressed:
  • CVE-2017-17505: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17505
  • CVE-2017-17506: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17506
  • CVE-2017-17508: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17508
  • CVE-2017-17509: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17509
• The following changes were added to the HDF5 library:
  • The H5F_LIBVER_V18 parameter can now be specified in the H5Pset_libver_bounds() function to provide control over object creation and ensure that files are fully compatible with HDF5 1.8.In addition, H5_LIBVER_LATEST is now set to H5F_LIBVER_V110. Please note that any applications that call H5Pset_libver_bounds to specify the latest file format will use HDF5 1.10 as the latest file format as of this release. (However, the h5format_convert utility can be used to change the file format version, if need be.)
  • The issue has been addressed where the path to VDS source files was interpreted (incorrectly) as relative to the directory where the executable ran (HDFFV-9724). The location of the source files can now be set with a function call or with an environment variable. For details, see H5Pset_virtual, and the new APIs H5Pset_virtual_prefix and H5Pget_virtual_prefix.
  • The H5DOread_chunk and H5Dget_chunk_storage_size functions were added to enable and support reading a raw data chunk directly from a dataset in a file into a buffer.
  • The H5Fget_eoa and H5Fincrement_filesize functions were added for retrieving and setting a file’s EOA/EOF. New options were also added to h5clear to do the same:
    -- filesize     Print the file’s EOA and EOF
    -- increment=C  Set the file’s EOA to the maximum of (EOA, EOF) + C for the file
  • The H5FDdriver_query function was added to query a VFL driver for its feature flags when a file is not available.
• Several changes to CMake were added:
  • The minimum CMake version required was changed to 3.10.
  • pkg-config file generation was added.
  • The creation of h5cc and similar compile scripts in builds was added for Linux.
• C++ API wrappers and classes were added for link operations.
• Several Java wrappers were added.

There are many other changes not listed here. Please see the release notes for details: https://portal.hdfgroup.org/display/support/HDF5+1.10.2

Also refer to the HDF5 Software Changes from Release to Release for HDF5 1.10: https://portal.hdfgroup.org/display/HDF5/Software+Changes+from+Release+to+Release+for+HDF5-1.10

Future Changes to Supported Compilers and Platforms

Please be aware that after this release, we will be dropping support for VS 2013 and adding support for VS 2017.