The OpenQuake engine version 3.26 has been released

[Michele Simionato]

Version 3.26 is the culmination of 4 months of work involving over 320 pull requests. It is the minimum version required to run the 2026 release of Global Hazard and Risk Models.

Users not needing the latest models may want to stay with the LTS release, currently at version 3.23.4.

The complete set of changes is listed in the changelog:

https://github.com/gem/oq-engine/blob/engine-3.26/debian/changelog

A summary of the new features and optimizations is given here:

https://docs.openquake.org/oq-engine/3.26/manual/release-notes/whats-new-3.26.html

You can install on all supported platforms (Linux, Windows, macOS) by
using the universal installer:

https://github.com/gem/oq-engine/blob/engine-3.26/doc/installing/universal.md

Windows user may prefer the native installer

https://downloads.openquake.org/pkgs/windows/oq-engine/OpenQuake_Engine_3.26.1-1-no-toolkit.exe

The OpenQuake engine manual is available here:

https://docs.openquake.org/oq-engine/3.26/manual/getting-started/index.html

Before installing the new release you should uninstall the previous
release, if you have one. As always, before upgrading, you should export any
output of interests, since exporting an output computed with an older
version of the engine may raise an error. Moreover, it is generally
not possible to run a risk calculation starting from a hazard computed
with an older version.

That's all, please let us know if you have any trouble with the upgrade.

           Michele Simionato on behalf of the OpenQuake Team