v1.2.0

:Date: February 8, 2024

New capabilities:

• Support for both Pydantic 1 and 2. #1135
• Support object dtype in history array. #1179 / #1181
• Users can add additional fields to output arrays in user functions. #1203
• Decorators to provide user function in/out specs. #1072

Fixes:

• Bug fix - Overwrite history file on completion when even when the pathname is unchanged. #1177
• Prevent duplicate save when using save_every_k_gens. #1154
• Add a FAILED_TO_START task status. #1229
• Set ensemble.nworkers when create ensemble object even when parse_args is False. #1162

Platform support:

• Add platform support for Aurora. #1183
  • Support for GPU tiles (new platform spec tiles_per_gpu).
  • Add libE_specs option use_tiles_as_gpus to treat each tile as a GPU.
  • Add Aurora platform guide.
• Add platform guide for Improv. #1235
• Detection of Perlmutter GPU nodes updated. #1211
• Make srun GPU setting default to gpus_per_task instead of gpus_per_node. #1206
• Remove Theta support and guide. #1200

Example user functions:

• Add gpCAM generator. #1189 / #1213 / #1220
• Support for IBCDFO local optimization methods in APOSMM. #998
• Add mock_sim to enable replay of a previous run using history file. #1207
• Fix Sine tutorial. #1168

:Note:

• Tests were run on Linux and MacOS with Python versions 3.9, 3.10, 3.11, 3.12
• Heterogeneous workflows tested on Aurora (ALCF), Frontier (OLCF), Polaris, and Perlmutter (NERSC).
• Tests were also run on Bebop and Improv LCRC systems.

:Known Issues:

• See known issues section in the documentation.