snapshot-1.16

HDF5 version 1.16.0-1 currently under development

Features included for the next major release:

---

Please see the full release notes for detailed information regarding this release,
including a detailed list of changes.

HDF5 Release 1.14.5

HDF5 version 1.14.5 released on 2024-09-30

This is a maintenance release with a few changes and updates:

• The release process now provides signed Windows and Mac installation binaries
  in addition to the Debian and rpm installation binaries. The Mac binaries are
  built as universal binaries on an ARM-based Mac.

• Added new routines for interacting with error stacks: H5Epause_stack,
  H5Eresume_stack, and H5Eis_paused. These routines can be used to indicate
  that errors from a call to an HDF5 routine should not be pushed on to an error
  stack.

---

Please see the full release notes for detailed information regarding this release,
including a detailed list of changes.

HDF5 Release 1.14.4.3

HDF5 version 1.14.4-3 released on 2024-05-22

This is a maintenance release with a few changes and updates:

• Fixed a leak of datatype IDs created internally during datatype conversion

  Fixes h5py GitHub h5py/h5py#2419

• Added support for _Float16 16-bit floating-point datatype

  Support for the 16-bit floating-point _Float16 C type has been added to
  HDF5. On platforms where this type is available, this can enable more
  efficient storage of floating-point data when an application doesn't
  need the precision of larger floating-point datatypes. It can also allow
  for improved performance when converting between 16-bit floating-point
  data and data of another HDF5 datatype.

• Improved type conversion performance

  As a part of the _Float16 work, the type conversion code was overhauled,
  which has improved the performance of type conversion code. The speedup
  varies depending on the datatypes involved, but can be upwards of 10x
  for compound types and 100x when converting floats to integers where the
  library doesn't have a fast conversion path available from the compiler.

• Added improvements for cloud-optimized HDF5

  As a part of our continued push to improve access to HDF5 files stored in the
  cloud, we've added a few things to make working with cloudy HDF5 files more
  efficient:

  • Page buffering setup is now more tolerant of being used with HDF5 files
    that did not use paged storage. This avoids having to open/close/re-open
    the file to determine appropriate page buffering settings.

  • Added support for temporary credentials with the read-only S3 VFD

• Added build system improvements

  We are always working to ensure that HDF5 can be built on a wide variety of
  systems with the latest compilers. In this release, we've incorporated some
  improvements, including:

  • Further improvements to cross-compiling
  • Support for the new standards-compliant MSVC preprocessor
  • Better support for Cygwin and MinGW, particularly with the Autotools
  • Many other build system tweaks

  If you have a system that has problems building HDF5, please let us know on
  the HDF Group Forum (https://forum.hdfgroup.org/)

• Fixed many CVE issues

  Many soon-to-be-reported CVE issues were fixed in this release. These are
  similar to previously reported CVE issues in that they involve file parsing
  errors that generally result in a segfault. They are usually rated as
  medium severity by NIST. These issues do not have official CVE numbers yet.

  With these fixes, HDF5 will once again be CVE-free.

• The release tag in GitHub will be hdf5_1.14.4.3

  We used to use tags with names like hdf5-1_14_3, but we've been informed
  that dashes are forbidden in version strings by many package management
  schemes. If a patch release is necessary, we'll simply append another
  dot and number - e.g. hdf5_1.14.4.3 (instead of our previous hdf5-1_14_4-3).

• Many other improvements and bugfixes!

  Please see the full release notes for detailed information regarding this
  release, including a detailed list of changes.

---

HDF5 Release 1.14.4.2

HDF5 version 1.14.4-2 released on 2024-04-15

This is a maintenance release with a few changes and updates:

• Added support for _Float16 16-bit floating-point datatype

  Support for the 16-bit floating-point _Float16 C type has been added to
  HDF5. On platforms where this type is available, this can enable more
  efficient storage of floating-point data when an application doesn't
  need the precision of larger floating-point datatypes. It can also allow
  for improved performance when converting between 16-bit floating-point
  data and data of another HDF5 datatype.

• Improved type conversion performance

  As a part of the _Float16 work, the type conversion code was overhauled,
  which has improved the performance of type conversion code. The speedup
  varies depending on the datatypes involved, but can be upwards of 10x
  for compound types and 100x when converting floats to integers where the
  library doesn't have a fast conversion path available from the compiler.

• Added improvements for cloud-optimized HDF5

  As a part of our continued push to improve access to HDF5 files stored in the
  cloud, we've added a few things to make working with cloudy HDF5 files more
  efficient:

  • Page buffering setup is now more tolerant of being used with HDF5 files
    that did not use paged storage. This avoids having to open/close/re-open
    the file to determine appropriate page buffering settings.

  • Added support for temporary credentials with the read-only S3 VFD

• Added build system improvements

  We are always working to ensure that HDF5 can be built on a wide variety of
  systems with the latest compilers. In this release, we've incorporated some
  improvements, including:

  • Further improvements to cross-compiling
  • Support for the new standards-compliant MSVC preprocessor
  • Better support for Cygwin and MinGW, particularly with the Autotools
  • Many other build system tweaks

  If you have a system that has problems building HDF5, please let us know on
  the HDF Group Forum (https://forum.hdfgroup.org/)

• Fixed many CVE issues

  Many soon-to-be-reported CVE issues were fixed in this release. These are
  similar to previously reported CVE issues in that they involve file parsing
  errors that generally result in a segfault. They are usually rated as
  medium severity by NIST. These issues do not have official CVE numbers yet.

  With these fixes, HDF5 will once again be CVE-free.

• The release tag in GitHub will be hdf5_1.14.4

  We used to use tags with names like hdf5-1_14_3, but we've been informed
  that dashes are forbidden in version strings by many package management
  schemes. If a patch release is necessary, we'll simply append another
  dot and number - e.g. hdf5_1.14.4.2 (instead of our previous hdf5-1_14_4-2).

• Many other improvements and bugfixes!

  Please see the full release notes for detailed information regarding this
  release, including a detailed list of changes.

---

snapshot

HDF5 version 2.0.0 currently under development

Features included for the next major release:

---

Please see the full release notes for detailed information regarding this release,
including a detailed list of changes.

snapshot-1.14

HDF5 version 1.14.6-1 currently under development

Features included for the next major release:

---

Please see the full release notes for detailed information regarding this release,
including a detailed list of changes.

HDF5 release 1.12.3

New features in this release:

• Bumped the minimum required version of Autoconf to 2.71.
• Added new option to build libaec and zlib inline with CMake.
• Changed the error handling for a not found path in the find plugin process.
• Removed "-commons" linking option to fix a compile error on MacOS Sonoma that resulted in build failure.
• Doxygen User Guide documentation can be configured and generated.

See release_docs/RELEASE.txt for bug fixes, other changes and full details.

HDF5 release 1.14.3

• Improved support for Intel oneAPI.
• Added support for AOCC and classic Flang w/ the Autotools.
• Thread-safety + static library disabled on Windows w/ CMake.
• Running H5make_libsettings is no longer required for cross-compiling.
• Running H5detect is no longer required for cross-compiling.
• Added a simple cache to the read-only S3 (ros3) VFD.
• Added new API function H5Pget_actual_selection_io_mode().
• Added optimized support for the parallel compression feature when using the multi-dataset I/O API routines collectively.
• Changed H5Pset_evict_on_close so that it can be called with a parallel build of HDF5.
• Fortran async APIs H5A, H5D, H5ES, H5G, H5F, H5L and H5O were added.
• Removed "-commons" linking option on Darwin, as COMMON and EQUIVALENCE are no longer used in the Fortran source.
• Disabled running of MPI Atomicity tests for OpenMPI major versions < 5.

HDF5 release 1.10.11

The HDF5 Library and Tools 1.10.11 release is now available from the HDF5 1.10.11 download page on the HDF Support Portal. 
    
This is a maintenance release with a few changes and updates:

• Some fixes and improved support for CMake, merged from the develop branch.
• Fixed multiple bugs, CVEs, and GitHub issues.

Please see the full release notes for detailed information regarding this release, including a detailed list of changes.

We also maintain a release schedule for all HDF5 versions in the README on Github. As always, feel free to post on the forum with any questions. 

HDF5 release 1.14.2

- Added support for in-place type conversion in most cases
- Changed selection I/O to be on by default when using the MPIO file driver
- Added support for selection I/O in the MPIO file driver
- Change the error handling for a not found path in the find plugin process.