Exporting a model with getitune

After training, export a model to a deployable format with engine.export(...) (Python API) or getitune export (CLI). getitune exports to OpenVINO IR (default) or ONNX, each at FP32 (default) or FP16 precision. Exported artifacts load back for inference via the OpenVINO/ONNX path (see the getitune-running-inference skill).

Run everything from libraries/getitune/.

Python API workflow

from getitune.engine import create_engine
from getitune.types import ExportFormat, Precision

engine = create_engine(
    model="efficientnet_b0",
    data="/path/to/dataset",
    work_dir="./my_workspace",
)
engine.train(max_epochs=50)

# FP32 OpenVINO IR (default) -> returns the .xml path
ov_ir_path = engine.export()

# FP32 ONNX
onnx_path = engine.export(export_format=ExportFormat.ONNX)

# FP16 ONNX (same pattern works for OpenVINO IR)
onnx_fp16 = engine.export(export_format=ExportFormat.ONNX, export_precision=Precision.FP16)

1. Train or load a model into the engine first (export operates on the engine's current model).
   • Done when: engine.test() produces sensible metrics before you export.
2. Choose format and precision. Default is FP32 OpenVINO IR. Use export_format=ExportFormat.ONNX for ONNX; export_precision=Precision.FP16 to halve size for supported hardware. Both enums live in getitune.types.
   • Done when: engine.export(...) returns a path to the written artifact.
3. Confirm the artifact exists under work_dir (.xml + .bin for OpenVINO IR, .onnx for ONNX).
   • Done when: the returned path exists on disk.
4. Validate parity by loading the exported model back and running engine.test() — accuracy should closely match the trained model (small FP16 drift is expected). See getitune-running-inference.
   • Done when: exported-model metrics are within tolerance of the trained model.

CLI workflow

# from libraries/getitune/
getitune export --data_root /path/to/dataset --model efficientnet_b0
# use --help -v for export-format / precision flags

Export/load contract

• Each model implements forward_for_tracing(...) under libraries/getitune/src/getitune/backend/lightning/models/<task>/; that is what defines the exported graph. If you change model I/O, keep this method in sync or export parity breaks.
• Exported OpenVINO IR / ONNX models are loaded for inference through the OpenVINO backend (OVEngine) using ModelAPI.
• Each task also ships an openvino_model.yaml recipe for loading a pre-exported IR model directly.

Verify

# from libraries/getitune/
just lint
just test-unit -- -k export        # when you touched export/tracing code

Related skills

• getitune-training-a-model — produce the checkpoint to export.
• getitune-running-inference — load and validate the exported model.
• getitune-optimizing-a-model — quantize an exported OpenVINO model to INT8.