v1.4.0

:Date: July 25, 2024

• Add a live_data option for real-time data collection / plotting. #1310
• nworkers/is_manager are set when Ensemble object is created. #1331/ #1336
  • This update locks the comms method when Ensemble object is created.
• Add a group_size option to deal with unevenly resourced nodes. #1349
• Bug fix: Fix shutdown hang on worker error when using gen_on_manager. #1348
• Bug fix: Log level was locked to INFO when using class interface. #1351
• Updated code to support numpy 2.0. #1332

Documentation:

• Notebook examples with Colab links added to documentation. #1310
  • E.g., https://colab.research.google.com/github/Libensemble/libensemble/blob/develop/examples/tutorials/aposmm/aposmm_tutorial_notebook.ipynb
• Example of templating input files added to forces tutorial. #1310

Example user functions:

• Update gpCAM generators to work with latest interface. #1355
• Change one_d_func to norm_eval. Works with multiple dimensions. #1352 / #1354

:Note:

• Tests were run on Linux and MacOS with Python versions 3.9, 3.10, 3.11, 3.12
• Heterogeneous workflows tested on Frontier (OLCF), Polaris (ALCF), and Perlmutter (NERSC).
• Note that tests have been recently run on Aurora (ALCF), but the system was unavailable at time of release.
• Tests were also run on Bebop and Improv LCRC systems.

:Known Issues:

• See known issues section in the documentation.