LAMBench

Note

Please visit the OpenLAM project webpage for comprehensive information, interactive results, and community rankings.

Overview

LAMBench is a benchmark designed to evaluate the performance of machine learning interatomic potentials (MLIPs) across multiple domains. It provides a comprehensive suite of tests and metrics to help developers and researchers understand the generalizability of their machine learning models.

Our mission is to:

• Provide a comprehensive benchmark: Covering diverse atomic systems across multiple domains, moving beyond domain-specific benchmarks.
• Align with real-world applications: Bridging the gap between model performance on benchmarks and their impact on scientific discovery.
• Enable clear model differentiation: Offering high discriminative power to distinguish between models with varying performance.
• Facilitate continuous improvement: Creating dynamically evolving benchmarks that grow with the community, integrating new tasks and models.

Features

• Comprehensive Benchmarks: Includes a wide range of benchmarks for different downstream tasks.
• Easy to Use: Simple setup and configuration to get started quickly.
• Extensible: Easily add new benchmarks and metrics.
• Detailed Reports: Generates detailed performance reports and visualizations.

Installation

pip install git+https://github.com/deepmodeling/LAMBench.git#egg=lambench[deepmd,mace,sevenn,orb]

The optional dependencies are required for the corresponding models.

Usage

To reproduce the results locally or test a custom model, please refer to the ASEModel.evaluate method.

• For direct prediction tasks, you can use the staticmethod run_ase_dptest(calc: Calculator, test_data: Path) -> dict. The test data can be found here.
• For calculator tasks, you can use the corresponding scripts provided in lambench.tasks.calculator.

  • The phonon test data can be found here.

  • An ASEModel object is needed for such tasks; you can create a dummy model as follows:

    model = ASEModel(
            model_name="dummy",
            model_type="ASE",
            model_family="<FAMILY_NAME>",
            virtualenv="dummy-env", # not used in local tests
            model_metadata={
                "pretty_name":"<DUMMY_NAME>",
                "num_parameters":1,
                "packages": {"pydummy": "1.0.0"}, # for pydantic validations
                "date_added": datetime(2025,5,19)
            }
        )
    # Note: the corresponding ASE calculator needs to be defined in ASEModel.calc.

• For finetune tasks, only models based on DeePMD-kit framework are supported, please raise an issue if you would like to test other models.

Contributing

We welcome contributions from the community. To contribute, please fork the repository, create a new branch, and submit a pull request with your changes.

Adding a new model

To add a model, please modify the lambench/models/models_config.yaml file.

The file contains a list of models with the following structure:

- model_name: a short and concise name for the model
  model_family: the family of the model; used for selecting ASE Calculator in `ase_models.py`
  model_type: usually `ASE`; use `DP` for deepmd-kit models
  model_path: local path to the model weight; null if not required
  virtualenv: (not used yet)
  model_metadata:
    pretty_name: a human-readable name for the model
    num_parameters: the number of parameters in the model
    packages:
      package_name: package_version
    model_description:
    date_added: datetime(yyyy,mm,dd)

Please refer to lambench/models/basemodel.py for the field definitions.

Now, add the ASE calculator interface of your model to lambench/models/ase_models.py. Once these modifications are done, please create a pull request. If you have any questions, feel free to create an issue.

Adding a new task

To add a task (specifically a calculator task), please modify the lambench/tasks/calculator/calculator_tasks.yml file. Please use this pull request as an example.

License

LAMBench is licensed under the MIT License. See the LICENSE file for more details.

Cite

@misc{peng2025lambenchbenchmarklargeatomic,
      title={LAMBench: A Benchmark for Large Atomic Models},
      author={Anyang Peng and Chun Cai and Mingyu Guo and Duo Zhang and Chengqian Zhang and Antoine Loew and Linfeng Zhang and Han Wang},
      year={2025},
      eprint={2504.19578},
      archivePrefix={arXiv},
      primaryClass={physics.comp-ph},
      url={https://arxiv.org/abs/2504.19578},
}