Loading Exported Policies

Runtime loads Studio export directories (or Hub snapshots that mirror them) through InferenceModel in src/physicalai/inference/model.py. Manifest parsing lives in src/physicalai/inference/manifest.py; backends register in src/physicalai/inference/adapters/registry.py (onnx → .onnx, openvino → .xml). Hub downloads use src/physicalai/inference/utils/_hub.py.

Workflow

1. Identify the artifact: local export directory or Hub repo_id, expected backend, and whether the user needs select_action vs predict_action_chunk.

   • Done when: load path and API entry point are chosen before editing code.

2. Load with auto-detection first (local):

   from physicalai.inference import InferenceModel
   model = InferenceModel("./exports/act_policy")
   

   • Done when: model constructs without explicit backend= when artifacts match a registered extension.

3. Hub load when the package is published: