[Bugfix]Disable the post_norm layer of the vision encoder for LLaVA models (#9653)

vllm/model_executor/models/llava.py

@@ -273,7 +273,8 @@ class LlavaForConditionalGeneration(nn.Module, SupportsMultiModal, SupportsPP):
             config.projector_hidden_act = "gelu"
 
         # TODO: Optionally initializes this for supporting embeddings.
-        self.vision_tower = init_vision_tower_for_llava(config, quant_config)
+        self.vision_tower = init_vision_tower_for_llava(
+            config, quant_config, require_post_norm=False)
         self.multi_modal_projector = LlavaMultiModalProjector(
             vision_hidden_size=config.vision_config.hidden_size,
             text_hidden_size=config.text_config.hidden_size,

vllm/model_executor/models/llava_next.py

@@ -277,7 +277,8 @@ class LlavaNextForConditionalGeneration(nn.Module, SupportsMultiModal,
         self.multimodal_config = multimodal_config
 
         # TODO: Optionally initializes this for supporting embeddings.
-        self.vision_tower = init_vision_tower_for_llava(config, quant_config)
+        self.vision_tower = init_vision_tower_for_llava(
+            config, quant_config, require_post_norm=False)
         self.image_newline = nn.Parameter(
             torch.empty(config.text_config.hidden_size))
         self.multi_modal_projector = LlavaMultiModalProjector(

vllm/model_executor/models/llava_next_video.py

@@ -256,7 +256,8 @@ class LlavaNextVideoForConditionalGeneration(nn.Module, SupportsMultiModal,
         self.multimodal_config = multimodal_config
 
         # Initialize the vision tower only up to the required feature layer
-        self.vision_tower = init_vision_tower_for_llava(config, quant_config)
+        self.vision_tower = init_vision_tower_for_llava(
+            config, quant_config, require_post_norm=False)
         self.vision_resampler = LlavaNextVideoPooler(config)
         self.multi_modal_projector = LlavaNextMultiModalProjector(
             vision_hidden_size=config.vision_config.hidden_size,

vllm/model_executor/models/llava_onevision.py

@@ -400,7 +400,8 @@ class LlavaOnevisionForConditionalGeneration(nn.Module, SupportsMultiModal,
         self.multimodal_config = multimodal_config
 
         # Initialize the vision tower only up to the required feature layer
-        self.vision_tower = init_vision_tower_for_llava(config, quant_config)
+        self.vision_tower = init_vision_tower_for_llava(
+            config, quant_config, require_post_norm=False)
         self.multi_modal_projector = LlavaOnevisionMultiModalProjector(config)
         self.language_model = init_vllm_registered_model(
             config.text_config, cache_config, quant_config)