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[Misc] Update WeightsMapper for qwen2-vl/qwen2.5-vl #19054

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Merged
DarkLight1337 merged 1 commit into from
Jun 3, 2025
Merged

[Misc] Update WeightsMapper for qwen2-vl/qwen2.5-vl #19054

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13 changes: 9 additions & 4 deletions vllm/model_executor/models/qwen2_5_vl.py
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Original file line number Diff line number Diff line change
Expand Up @@ -823,10 +823,15 @@ class Qwen2_5_VLForConditionalGeneration(nn.Module, SupportsMultiModal,
SupportsLoRA, SupportsPP):

# To ensure correct weight loading and mapping.
hf_to_vllm_mapper = WeightsMapper(orig_to_new_prefix={
"lm_head.": "language_model.lm_head.",
"model.": "language_model.model.",
})
hf_to_vllm_mapper = WeightsMapper(
orig_to_new_prefix={
# mapping for new names in checkpoint saved after transformers v4.52
"model.language_model.": "language_model.model.",
"model.visual.": "visual.",
# mapping for original checkpoint
"lm_head.": "language_model.lm_head.",
"model.": "language_model.model.",
})

def __init__(self, *, vllm_config: VllmConfig, prefix: str = ""):
super().__init__()
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13 changes: 9 additions & 4 deletions vllm/model_executor/models/qwen2_vl.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1071,10 +1071,15 @@ class Qwen2VLForConditionalGeneration(nn.Module, SupportsMultiModal,
SupportsLoRA, SupportsPP):

# To ensure correct weight loading and mapping.
hf_to_vllm_mapper = WeightsMapper(orig_to_new_prefix={
"lm_head.": "language_model.lm_head.",
"model.": "language_model.model.",
})
hf_to_vllm_mapper = WeightsMapper(
orig_to_new_prefix={
# mapping for new names in checkpoint saved after transformers v4.52
"model.language_model.": "language_model.model.",
"model.visual.": "visual.",
# mapping for original checkpoint
"lm_head.": "language_model.lm_head.",
"model.": "language_model.model.",
})

def __init__(self, *, vllm_config: VllmConfig, prefix: str = ""):
super().__init__()
Expand Down