github-issues/T-140.md

ISSUE #140: Artifact Export and Model Metadata

Status: status:todo Parent: #139 (GENESIS) Depends On: #139 (Workstation Foundation)

Summary

Owns the generation and validation of real model artifacts (IREE/ONNX) and their associated metadata. This issue is strictly about artifact production, not placeholders.

Tasks

• IREE/ONNX Artifact Generation: Produce ready-to-execute bytecode (.vmfb) and .onnx files for Magenta RT and MIDI models.
• Quantized Artifacts: Generate 4-bit (NF4) and INT8 variants optimized for the RX 6700 XT.
• Metadata Specification: Create artifact_metadata.json for each model defining input/output shapes, quantization levels, and performance targets.
• Fail-Closed Validation: Implement a script to verify that generated artifacts match the metadata and are loadable by the NNE runtime.

Acceptance Criteria

• No dummy graph exports or placeholder benchmarks.
• All artifacts saved to Content/MagentaRT/Models/.
• Metadata correctly identifies 800M Mother vs 200M Submodel paths.