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[NVBug: 6445613] handle nested vocab_size for multimodal configs (Gemma4) #2040

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[NVBug: 6445613] handle nested vocab_size for multimodal configs (Gemma4) #2040

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5 changes: 4 additions & 1 deletion modelopt/torch/export/model_config_export.py
100644 → 100755
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Original file line number Diff line number Diff line change
Expand Up @@ -149,7 +149,10 @@ def torch_to_tensorrt_llm_checkpoint(
elif hasattr(model, "config"):
# Huggingface models
model_metadata_config = model.config.__dict__
vocab_size = model.config.vocab_size
if hasattr(model.config, "vocab_size"):
vocab_size = model.config.vocab_size
else:
vocab_size = model.config.text_config.vocab_size
hf_config = model.config
architectures = getattr(model.config, "architectures", None)
architecture = architectures[0] if architectures else ""
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