# 🔆 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.
| Filename | Size | SHA256 | Action |
|---|---|---|---|
| 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 |