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name: onnx-export description: "Guides FCOS ONNX export command construction, output tensor contracts, backend constraints, and ONNX evaluation troubleshooting." disable-model-invocation: true metadata: disco-role: operating license: NOASSERTION

FCOS ONNX Export

Use this sub-skill when the user asks to export an FCOS model to ONNX, inspect ONNX output tensors, test an ONNX FCOS file, handle Caffe2 backend constraints, or reduce ONNX export/evaluation memory.

Start here

1. Read references/workflows.md for export and ONNX test flows.
2. Read references/output-contract.md for dummy input and output tensor names/order.
3. Use scripts/build_onnx_export_command.py to produce a safe export command without running it.
4. Read references/troubleshooting.md before installing ONNX/Caffe2 dependencies or running large exports.

Boundaries

• Route config selection and dataset layout to ../data-configs/SKILL.md.
• Route normal PyTorch train/eval to ../training-evaluation/SKILL.md.
• Route one-image high-level detector demos to ../inference-demo/SKILL.md.
• Route source-level postprocessor edits to ../internals-maintenance/SKILL.md.

Safety rule

ONNX export constructs the FCOS model and loads weights. ONNX testing may require datasets and the Caffe2 ONNX backend. Do not run export/test by default; build commands and validate prerequisites first.