HDFGroup/hdf5 - 2.2.0

2.2.0 Published: 2026-07-29T05:06:32Z

Release Notes

# 🔆 Executive Summary: HDF5 Version 2.2.0

## Performance Enhancements:

- Added an I/O block cache to the ROS3 VFD to reduce the number of requests to S3 for files not using paged allocation

- Improved the performance of several tools (h5dump, h5ls, h5diff, h5repack, h5stat and h5format_convert) for specific file structures where many objects are linked to with multiple hard links

## Enhanced Features:

- Made several improvements to the CMake logic for handling filter libraries

## Java Enhancements:

- Added CMake cache variables for configuring Java dependency JAR paths, allowing system-provided JARs to be used in place of the bundled copies

## Acknowledgements:

We would like to thank the many HDF5 community members who contributed to this release of HDF5.

## Changelog and release information:

The full list of changes in this release can be found in [CHANGELOG.md](https://github.com/HDFGroup/hdf5/blob/2.2.0/release_docs/CHANGELOG.md).

Information about a specific HDF5 release can be found at https://support.hdfgroup.org/documentation/hdf5/latest/release_specific_info.html.

> [!NOTE]
> Release assets: The `hdf5(-VERSION).zip` and `hdf5(-VERSION).tar.gz` archives contain the HDF5 source code for this release. Binary installers are provided for Windows and MacOS in .msi and .dmg format, respectively[^1]. `hdf5-VERSION.html.abi.reports.tar.gz` contains ABI compatibility reports for this release of HDF5. `hdf5-VERSION.doxygen.zip` contains the generated Doxygen documentation for this release of HDF5. The remaining archives contain HDF5 binaries with a pre-installed layout. These archives can be extracted and used directly, without having to use a binary installer program.

##
[^1]: While the HDF Group explores alternative packaging methods for future releases, RPM and DEB packages for Linux are not provided for this release of HDF5.

Assets

FilenameSizeSHA256Action
hdf5-2.2.0-macos15_clang.dmg 35.18 MB 2f3f686239e005a24b39b20b304d0d263af3db4fc4bf9b7e0dd039eee81fc1ca Download
hdf5-2.2.0-macos15_clang.tar.gz 33.19 MB 7402939a854b643022e239dfa544a200c048b798bb0861890010db48a72efc73 Download
hdf5-2.2.0-ubuntu-2404_gcc.tar.gz 53.39 MB efa520a59202830a0d48ac7da1312314507ec1fcc40c744cf7b1c37a5edfaaeb Download
hdf5-2.2.0-ubuntu-2404_gcc_s3.tar.gz 40.07 MB ac0f0ff9316fd34d150635293f289126a56cb87b3eda1065b10c774210eb0862 Download
hdf5-2.2.0-ubuntu-2404_intel.tar.gz 29.70 MB 0d16e36e0c69cfb2c1f43a24b314f382c0a427e7ff38bbf7b679f6dde50a3c62 Download
hdf5-2.2.0-win-vs2022_intel.msi 26.81 MB 1f74ff70cfc2a93268c170f71e197b52a91e18b7d7e75676f32caaa2dfe36904 Download
hdf5-2.2.0-win-vs2022_intel.zip 25.17 MB 7b8f4d2bf1e27f53fcf2985eafbe430d966d78d807ee9cc5b690471259998e4f Download
hdf5-2.2.0-win-vs2026_cl.msi 47.54 MB ced736a7d95ab3e29ebcc6d39c9071544b2a0b5de24f4d346618b425890a45fc Download
hdf5-2.2.0-win-vs2026_cl.zip 47.66 MB 0564e8d75cbc7cd86dec2a629afa8498f9ad22cdcb06d9078ebaa4e834390ac4 Download
hdf5-2.2.0.doxygen.zip 15.16 MB fef8f16c85e21b6b97b8d054109bd8c8fd19e8921712bca2e8ae608ec688bf79 Download
hdf5-2.2.0.html.abi.reports.tar.gz 6.47 KB 9790f30eeec6fc6e4d39e98dc6ff72a33ccafdefd2f6e095cfe27e1ce2b63842 Download
hdf5-2.2.0.sha256sums.txt 1.55 KB 1e49b821e2c5ddb8b69375bd4c8e7474baddb3c590c90adf99592ce218cffc4e Download
hdf5-2.2.0.tar.gz 40.18 MB 1a1ab8209b35586fbc1aa279ba76d102130b95badcb20ca329587219112d8c16 Download
hdf5-2.2.0.zip 42.69 MB 9a04c14a258a360582a18d1ed4f2a8e863ab7219870908499a0c1b4c39b1ab81 Download
hdf5.tar.gz 40.18 MB 1a1ab8209b35586fbc1aa279ba76d102130b95badcb20ca329587219112d8c16 Download
hdf5.zip 42.69 MB 9a04c14a258a360582a18d1ed4f2a8e863ab7219870908499a0c1b4c39b1ab81 Download

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