Feedback on DLML v3 and DLML Explorer

[zsarnoczay]

DLML v3
The library is now an installable Python package, with the model data bundled in the wheel, a read API, and a CLI:

pip install simcenter-dlml

DLML Explorer
A web interface for searching, reviewing, and downloading models from the library: https://dlml-explorer.streamlit.app

The README covers the API and the CLI, and the Explorer's About page covers the library itself.

We are looking for feedback

We are particularly interested in:

1. Models you would like to see in the library — our one requirement is a reference documenting each model.
2. Corrections. If a parameter or damage state looks wrong, please tell us.
3. What is missing from the data schema for your workflows.
4. What would make the DLML Explorer easier to use.

The next phase focuses on developing a formal submission and review process, and the posts here will shape what that process looks like.

If you use Pelicun, read this part

v3.0 and v3.1 are now published as GitHub Releases, which means this repository's latest release points at the v3 layout.

Pelicun 3.10 and later: nothing to do. They install simcenter-dlml from PyPI.

Pelicun 3.9 and earlier: these versions fetched model data from the latest release of the DLML repository when you imported them, and they are not compatible with DLML v3.0 or later. A fresh Pelicun 3.9 install will now fail with a download error. An install that already has the data on disk keeps working, but will warn you that an update is available, and that update will fail.

The fix is to upgrade pelicun:

pip install --upgrade pelicun

The PBE and R2D desktop applications released in August 2026 already ship Pelicun 3.10.

If you need to stay on an older Pelicun for now, pin the model data to the last release those versions can read:

pelicun dlml update v2.1.0

That release is not going away. We would still rather you upgrade — tell us here if something is blocking you, because that is useful for us to know.