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Llama4 Export: Remove outdated MLP weight transform #14297

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Merged
merged 2 commits into from
Jul 24, 2025
Merged

Llama4 Export: Remove outdated MLP weight transform #14297

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2552d0c
Update HFLlamaExporter to remove outdated MLP weight transform for Ll…
suiyoubi Jul 21, 2025
7856791
Apply isort and black reformatting
suiyoubi Jul 21, 2025
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7 changes: 7 additions & 0 deletions nemo/collections/llm/gpt/model/llama.py
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Original file line number Diff line number Diff line change
Expand Up @@ -900,6 +900,13 @@ def convert_state(self, source, target, source_config=None):
"decoder.layers.*.mlp.experts.linear_fc1.weight": "model.layers.*.feed_forward.experts.gate_up_proj",
}
)

# Remove the transform with source_key "decoder.layers.*.mlp.linear_fc1.weight" from transforms
# Llama4's HF model has a different mapping for the MLP weights (map to feed_forward instead of mlp)
transforms = [
t for t in transforms if getattr(t, "source_key", None) != "decoder.layers.*.mlp.linear_fc1.weight"
]

transforms.extend(
[
io.state_transform(
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