[Yuri Khrustalev (ykhrustalev)]

Problem
onnxruntime-genai 0.16 dropped the int4_ prefix from the model builder's quantization options and no longer accepts the old names. Olive still forwards its int4_block_size, int4_accuracy_level, int4_is_symmetric, int4_op_types_to_quantize, int4_nodes_to_exclude and int4_algo_config settings under the old names, so the builder ignores them without a warning, including the values olive optimize, olive capture-onnx-graph and olive init set.

Solution

• Forwards the int4_* ModelBuilder options under the builder's current names (block_size, algo_config, ...); Olive's option names stay the same
• Drops the comments that say the builder renames the old names itself
• The new names exist in every onnxruntime-genai the pass supports (0.15 and later, the first release with the check_extra_options call it makes)

Testing

• New test_model_builder_applies_int4_options builds a tiny Llama with five of the options and checks each one in the graph; it fails on main
• olive capture-onnx-graph --use_model_builder --precision int4 --int4_block_size 128 on Qwen2.5-0.5B-Instruct builds with block size 32 on main and 128 with this change (onnxruntime-genai 0.17.1)

Refs microsoft/onnxruntime-genai#2629

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[Copilot]

🟡 Changes recommended

Documented extra_mb_options still bypass normalization and forward unsupported prefixed names.

1 open finding

• Normalize legacy extra_options keys for ORT GenAI 0.16+ · New

What changed in this PR

Aligns ModelBuilder INT4 option forwarding with current ONNX Runtime GenAI names while preserving Olive’s pass configuration names.

Changes:

• Removes int4_ prefixes before forwarding typed options.
• Updates list serialization and adds graph-level validation.

File	Description
olive/​passes/​onnx/​model_builder.py	Renames forwarded INT4 options.
test/​passes/​onnx/​test_model_builder.py	Tests option forwarding and graph output.

🧠 Review effort: Balanced

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[kunal-vaishnavi]

/azp run Olive CI

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[Yuri Khrustalev (ykhrustalev)]

Merged main to fix a conflict in the --extra_mb_options help text (32f6572). The rest of the diff is unchanged, and it needs a new approval after this merge.

[Yuri Khrustalev (ykhrustalev)]

kunal-vaishnavi your approval was dropped when I merged main to fix a conflict in the --extra_mb_options help text in capture_onnx.py. The rest of the diff is the same as the version you approved. Could you approve it again when you have time?