[VLM] Enable overriding whether post layernorm is used in vision encoder + fix quant args (#9217)

Co-authored-by: Isotr0py <2037008807@qq.com>

vllm/model_executor/layers/quantization/awq.py

@@ -3,7 +3,8 @@ from typing import Any, Dict, List, Optional
 import torch
 
 from vllm import _custom_ops as ops
-from vllm.model_executor.layers.linear import LinearBase, LinearMethodBase
+from vllm.model_executor.layers.linear import (LinearBase, LinearMethodBase,
+                                               UnquantizedLinearMethod)
 from vllm.model_executor.layers.quantization.base_config import (
     QuantizationConfig)
 from vllm.model_executor.parameter import (GroupQuantScaleParameter,
@@ -21,10 +22,12 @@ class AWQConfig(QuantizationConfig):
         weight_bits: int,
         group_size: int,
         zero_point: bool,
+        modules_to_not_convert: Optional[List[str]] = None,
     ) -> None:
         self.weight_bits = weight_bits
         self.group_size = group_size
         self.zero_point = zero_point
+        self.modules_to_not_convert = modules_to_not_convert or []
 
         if self.weight_bits != 4:
             raise ValueError(
@@ -35,7 +38,8 @@ class AWQConfig(QuantizationConfig):
     def __repr__(self) -> str:
         return (f"AWQConfig(weight_bits={self.weight_bits}, "
                 f"group_size={self.group_size}, "
-                f"zero_point={self.zero_point})")
+                f"zero_point={self.zero_point}, "
+                f"modules_to_not_convert={self.modules_to_not_convert})")
 
     def get_name(self) -> str:
         return "awq"
@@ -61,11 +65,15 @@ class AWQConfig(QuantizationConfig):
         weight_bits = cls.get_from_keys(config, ["w_bit", "bits"])
         group_size = cls.get_from_keys(config, ["q_group_size", "group_size"])
         zero_point = cls.get_from_keys(config, ["zero_point"])
-        return cls(weight_bits, group_size, zero_point)
+        modules_to_not_convert = cls.get_from_keys_or(
+            config, ["modules_to_not_convert"], None)
+        return cls(weight_bits, group_size, zero_point, modules_to_not_convert)
 
     def get_quant_method(self, layer: torch.nn.Module,
-                         prefix: str) -> Optional["AWQLinearMethod"]:
+                         prefix: str) -> Optional["LinearMethodBase"]:
         if isinstance(layer, LinearBase):
+            if is_layer_skipped_awq(prefix, self.modules_to_not_convert):
+                return UnquantizedLinearMethod()
             return AWQLinearMethod(self)
         return None
 
@@ -73,6 +81,10 @@ class AWQConfig(QuantizationConfig):
         return ["gelu", "gelu_fast", "gelu_new", "gelu_pytorch_tanh"]
 
 
+def is_layer_skipped_awq(prefix: str, modules_to_not_convert: List[str]):
+    return any(module_name in prefix for module_name in modules_to_not_convert)
+
+
 class AWQLinearMethod(LinearMethodBase):
     """Linear method for AWQ.
 

vllm/model_executor/models/blip.py

@@ -122,7 +122,7 @@ def input_processor_for_blip(
 # Adapted from https://github.com/huggingface/transformers/blob/v4.39.0/src/transformers/models/blip/modeling_blip.py#L164 # noqa
 class BlipVisionEmbeddings(nn.Module):
 
-    def __init__(self, config: BlipVisionConfig):
+    def __init__(self, config: Union[BlipVisionConfig, Blip2VisionConfig]):
         super().__init__()
 
         self.config = config
@@ -167,9 +167,10 @@ class BlipParallelAttention(nn.Module):
 
     def __init__(
         self,
-        config: BlipVisionConfig,
+        config: Union[BlipVisionConfig, Blip2VisionConfig],
         quant_config: Optional[QuantizationConfig] = None,
-    ):
+        prefix: str = "",
+    ) -> None:
         super().__init__()
         self.config = config
         self.embed_dim = config.hidden_size
@@ -189,11 +190,13 @@ class BlipParallelAttention(nn.Module):
             self.num_heads,
             bias=config.qkv_bias,
             quant_config=quant_config,
+            prefix=f"{prefix}.qkv",
         )
         self.projection = RowParallelLinear(
             self.embed_dim,
             self.embed_dim,
             quant_config=quant_config,
+            prefix=f"{prefix}.projection",
         )
 
         self.tp_size = get_tensor_model_parallel_world_size()
@@ -235,9 +238,12 @@ class BlipParallelAttention(nn.Module):
 
 class BlipMLP(nn.Module):
 
-    def __init__(self,
+    def __init__(
-                 config: BlipVisionConfig,
+        self,
-                 quant_config: Optional[QuantizationConfig] = None):
+        config: BlipVisionConfig,
+        quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
 
         self.config = config
@@ -246,11 +252,13 @@ class BlipMLP(nn.Module):
         self.fc1 = ColumnParallelLinear(config.hidden_size,
                                         config.intermediate_size,
                                         bias=True,
-                                        quant_config=quant_config)
+                                        quant_config=quant_config,
+                                        prefix=f"{prefix}.fc1")
         self.fc2 = RowParallelLinear(config.intermediate_size,
                                      config.hidden_size,
                                      bias=True,
-                                     quant_config=quant_config)
+                                     quant_config=quant_config,
+                                     prefix=f"{prefix}.fc2")
 
     def forward(self, hidden_states: torch.Tensor) -> torch.Tensor:
         hidden_states, _ = self.fc1(hidden_states)
@@ -262,24 +270,32 @@ class BlipMLP(nn.Module):
 
 class BlipEncoderLayer(nn.Module):
 
-    def __init__(self,
+    def __init__(
-                 config: BlipVisionConfig,
+        self,
-                 quant_config: Optional[QuantizationConfig] = None):
+        config: BlipVisionConfig,
+        quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
 
         # fallback to sdpa attention if tp unavailable
         num_heads = config.num_attention_heads
         tp_size = get_tensor_model_parallel_world_size()
         if USE_XFORMERS_OPS and num_heads % tp_size == 0:
-            self.self_attn = BlipParallelAttention(config,
+            self.self_attn = BlipParallelAttention(
-                                                   quant_config=quant_config)
+                config,
+                quant_config=quant_config,
+                prefix=f"{prefix}.self_attn",
+            )
         else:
             # Blip doesn't have SDPA attention implemented in transformers
             # use eager attention instead for cpu backend
             self.self_attn = BlipAttention(config)
         self.layer_norm1 = nn.LayerNorm(config.hidden_size,
                                         eps=config.layer_norm_eps)
-        self.mlp = BlipMLP(config, quant_config=quant_config)
+        self.mlp = BlipMLP(config,
+                           quant_config=quant_config,
+                           prefix=f"{prefix}.mlp")
         self.layer_norm2 = nn.LayerNorm(config.hidden_size,
                                         eps=config.layer_norm_eps)
 
@@ -307,10 +323,13 @@ class BlipEncoder(nn.Module):
         config: BlipConfig
     """
 
-    def __init__(self,
+    def __init__(
-                 config: BlipVisionConfig,
+        self,
-                 quant_config: Optional[QuantizationConfig] = None,
+        config: BlipVisionConfig,
-                 num_hidden_layers_override: Optional[int] = None):
+        quant_config: Optional[QuantizationConfig] = None,
+        num_hidden_layers_override: Optional[int] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
 
         self.config = config
@@ -321,8 +340,10 @@ class BlipEncoder(nn.Module):
             num_hidden_layers = num_hidden_layers_override
 
         self.layers = nn.ModuleList([
-            BlipEncoderLayer(config=config, quant_config=quant_config)
+            BlipEncoderLayer(config=config,
-            for _ in range(num_hidden_layers)
+                             quant_config=quant_config,
+                             prefix=f"{prefix}.layers.{layer_idx}")
+            for layer_idx in range(num_hidden_layers)
         ])
 
     def forward(self, inputs_embeds: torch.Tensor):
@@ -337,10 +358,15 @@ class BlipVisionModel(nn.Module):
     config_class = BlipVisionConfig
     main_input_name = "pixel_values"
 
-    def __init__(self,
+    def __init__(
-                 config: BlipVisionConfig,
+        self,
-                 quant_config: Optional[QuantizationConfig] = None,
+        config: BlipVisionConfig,
-                 num_hidden_layers_override: Optional[int] = None):
+        quant_config: Optional[QuantizationConfig] = None,
+        *,
+        num_hidden_layers_override: Optional[int] = None,
+        require_post_norm: Optional[bool] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
 
         tp_size = get_tensor_model_parallel_world_size()
@@ -354,19 +380,24 @@ class BlipVisionModel(nn.Module):
             config=config,
             quant_config=quant_config,
             num_hidden_layers_override=num_hidden_layers_override,
+            prefix=f"{prefix}.encoder",
         )
 
+        num_hidden_layers = config.num_hidden_layers
         if len(self.encoder.layers) > config.num_hidden_layers:
             raise ValueError(
-                f"The original encoder only has {config.num_hidden_layers} "
+                f"The original encoder only has {num_hidden_layers} "
                 f"layers, but you requested {len(self.encoder.layers)} layers."
             )
-        elif len(self.encoder.layers) == config.num_hidden_layers:
+
+        # If possible, skip post_layernorm to conserve memory
+        if require_post_norm is None:
+            require_post_norm = len(self.encoder.layers) == num_hidden_layers
+
+        if require_post_norm:
             self.post_layernorm = nn.LayerNorm(config.hidden_size,
                                                eps=config.layer_norm_eps)
         else:
-            # post_layernorm is unused when we extract intermediate features
-            # In this case, we can skip it to conserve memory
             self.post_layernorm = None
 
     def forward(self, pixel_values: torch.Tensor) -> torch.Tensor:

vllm/model_executor/models/blip2.py

@@ -490,7 +490,7 @@ class Blip2ForConditionalGeneration(nn.Module, SupportsMultiModal, SupportsPP):
         self.multimodal_config = multimodal_config
 
         # TODO: Optionally initializes this for supporting embeddings.
-        self.vision_model = BlipVisionModel(config.vision_config)
+        self.vision_model = BlipVisionModel(config.vision_config, quant_config)
 
         self.query_tokens = nn.Parameter(
             torch.zeros(1, config.num_query_tokens,

vllm/model_executor/models/clip.py

@@ -192,6 +192,7 @@ class CLIPParallelAttention(nn.Module):
         self,
         config: CLIPVisionConfig,
         quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
     ):
         super().__init__()
         self.config = config
@@ -211,12 +212,14 @@ class CLIPParallelAttention(nn.Module):
             head_size=self.head_dim,
             total_num_heads=self.num_heads,
             quant_config=quant_config,
+            prefix=f"{prefix}.qkv_proj",
         )
 
         self.out_proj = RowParallelLinear(
             input_size=self.embed_dim,
             output_size=self.embed_dim,
             quant_config=quant_config,
+            prefix=f"{prefix}.out_proj",
         )
 
         self.tp_size = get_tensor_model_parallel_world_size()
@@ -259,20 +262,25 @@ class CLIPParallelAttention(nn.Module):
 
 class CLIPMLP(nn.Module):
 
-    def __init__(self,
+    def __init__(
-                 config: CLIPVisionConfig,
+        self,
-                 quant_config: Optional[QuantizationConfig] = None):
+        config: CLIPVisionConfig,
+        quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
         self.config = config
         self.activation_fn = get_act_fn(config.hidden_act)
         self.fc1 = ColumnParallelLinear(config.hidden_size,
                                         config.intermediate_size,
                                         bias=True,
-                                        quant_config=quant_config)
+                                        quant_config=quant_config,
+                                        prefix=f"{prefix}.fc1")
         self.fc2 = RowParallelLinear(config.intermediate_size,
                                      config.hidden_size,
                                      bias=True,
-                                     quant_config=quant_config)
+                                     quant_config=quant_config,
+                                     prefix=f"{prefix}.fc2")
 
     def forward(self, hidden_states: torch.Tensor) -> torch.Tensor:
         hidden_states, _ = self.fc1(hidden_states)
@@ -284,21 +292,29 @@ class CLIPMLP(nn.Module):
 
 class CLIPEncoderLayer(nn.Module):
 
-    def __init__(self,
+    def __init__(
-                 config: CLIPVisionConfig,
+        self,
-                 quant_config: Optional[QuantizationConfig] = None):
+        config: CLIPVisionConfig,
+        quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
 
         num_heads = config.num_attention_heads
         tp_size = get_tensor_model_parallel_world_size()
         if USE_XFORMERS_OPS and num_heads % tp_size == 0:
-            self.self_attn = CLIPParallelAttention(config,
+            self.self_attn = CLIPParallelAttention(
-                                                   quant_config=quant_config)
+                config,
+                quant_config=quant_config,
+                prefix=f"{prefix}.self_attn",
+            )
         else:
             self.self_attn = CLIPSdpaAttention(config)
         self.layer_norm1 = nn.LayerNorm(config.hidden_size,
                                         eps=config.layer_norm_eps)
-        self.mlp = CLIPMLP(config, quant_config=quant_config)
+        self.mlp = CLIPMLP(config,
+                           quant_config=quant_config,
+                           prefix=f"{prefix}.mlp")
         self.layer_norm2 = nn.LayerNorm(config.hidden_size,
                                         eps=config.layer_norm_eps)
 
@@ -327,11 +343,15 @@ class CLIPEncoder(nn.Module):
         config: CLIPConfig
     """
 
-    def __init__(self,
+    def __init__(
-                 config: CLIPVisionConfig,
+        self,
-                 quant_config: Optional[QuantizationConfig] = None,
+        config: CLIPVisionConfig,
-                 num_hidden_layers_override: Optional[int] = None):
+        quant_config: Optional[QuantizationConfig] = None,
+        num_hidden_layers_override: Optional[int] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
+
         self.config = config
 
         if num_hidden_layers_override is None:
@@ -339,8 +359,10 @@ class CLIPEncoder(nn.Module):
         else:
             num_hidden_layers = num_hidden_layers_override
         self.layers = nn.ModuleList([
-            CLIPEncoderLayer(config=config, quant_config=quant_config)
+            CLIPEncoderLayer(config=config,
-            for _ in range(num_hidden_layers)
+                             quant_config=quant_config,
+                             prefix=f"{prefix}.layers.{layer_idx}")
+            for layer_idx in range(num_hidden_layers)
         ])
 
     def forward(self, inputs_embeds: torch.Tensor):
@@ -354,11 +376,17 @@ class CLIPEncoder(nn.Module):
 
 class CLIPVisionTransformer(nn.Module):
 
-    def __init__(self,
+    def __init__(
-                 config: CLIPVisionConfig,
+        self,
-                 quant_config: Optional[QuantizationConfig] = None,
+        config: CLIPVisionConfig,
-                 num_hidden_layers_override: Optional[int] = None):
+        quant_config: Optional[QuantizationConfig] = None,
+        *,
+        num_hidden_layers_override: Optional[int] = None,
+        require_post_norm: Optional[bool] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
+
         self.config = config
         embed_dim = config.hidden_size
 
@@ -370,19 +398,25 @@ class CLIPVisionTransformer(nn.Module):
         self.encoder = CLIPEncoder(
             config=config,
             quant_config=quant_config,
-            num_hidden_layers_override=num_hidden_layers_override)
+            num_hidden_layers_override=num_hidden_layers_override,
+            prefix=f"{prefix}.encoder",
+        )
 
+        num_hidden_layers = config.num_hidden_layers
         if len(self.encoder.layers) > config.num_hidden_layers:
             raise ValueError(
-                f"The original encoder only has {config.num_hidden_layers} "
+                f"The original encoder only has {num_hidden_layers} "
                 f"layers, but you requested {len(self.encoder.layers)} layers."
             )
-        elif len(self.encoder.layers) == config.num_hidden_layers:
+
+        # If possible, skip post_layernorm to conserve memory
+        if require_post_norm is None:
+            require_post_norm = len(self.encoder.layers) == num_hidden_layers
+
+        if require_post_norm:
             self.post_layernorm = nn.LayerNorm(embed_dim,
                                                eps=config.layer_norm_eps)
         else:
-            # post_layernorm is unused when we extract intermediate features
-            # In this case, we can skip it to conserve memory
             self.post_layernorm = None
 
     def forward(
@@ -405,10 +439,15 @@ class CLIPVisionModel(nn.Module):
     config_class = CLIPVisionConfig
     main_input_name = "pixel_values"
 
-    def __init__(self,
+    def __init__(
-                 config: CLIPVisionConfig,
+        self,
-                 quant_config: Optional[QuantizationConfig] = None,
+        config: CLIPVisionConfig,
-                 num_hidden_layers_override: Optional[int] = None):
+        quant_config: Optional[QuantizationConfig] = None,
+        *,
+        num_hidden_layers_override: Optional[int] = None,
+        require_post_norm: Optional[bool] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
 
         tp_size = get_tensor_model_parallel_world_size()
@@ -418,7 +457,10 @@ class CLIPVisionModel(nn.Module):
         self.vision_model = CLIPVisionTransformer(
             config=config,
             quant_config=quant_config,
-            num_hidden_layers_override=num_hidden_layers_override)
+            num_hidden_layers_override=num_hidden_layers_override,
+            require_post_norm=require_post_norm,
+            prefix=f"{prefix}.vision_model",
+        )
 
     def forward(self, pixel_values: torch.Tensor) -> torch.Tensor:
         return self.vision_model(pixel_values)

vllm/model_executor/models/idefics2_vision_model.py

@@ -113,7 +113,8 @@ class Idefics2VisionAttention(nn.Module):
         self,
         config: Idefics2Config,
         quant_config: Optional[QuantizationConfig] = None,
-    ):
+        prefix: str = "",
+    ) -> None:
         super().__init__()
         self.config = config
         self.embed_dim = config.hidden_size
@@ -130,12 +131,14 @@ class Idefics2VisionAttention(nn.Module):
             self.head_dim,
             self.num_heads,
             quant_config=quant_config,
+            prefix=f"{prefix}.qkv_proj",
         )
         self.out_proj = RowParallelLinear(
             self.embed_dim,
             self.embed_dim,
             bias=True,
             quant_config=quant_config,
+            prefix=f"{prefix}.out_proj",
         )
         self.tp_size = get_tensor_model_parallel_world_size()
         self.num_heads_per_partition = divide(self.num_heads, self.tp_size)
@@ -178,7 +181,8 @@ class Idefics2VisionMLP(nn.Module):
         self,
         config: Idefics2Config,
         quant_config: Optional[QuantizationConfig] = None,
-    ):
+        prefix: str = "",
+    ) -> None:
         super().__init__()
         self.config = config
         self.activation_fn = get_act_fn(config.hidden_act)
@@ -187,12 +191,14 @@ class Idefics2VisionMLP(nn.Module):
             config.intermediate_size,
             bias=True,
             quant_config=quant_config,
+            prefix=f"{prefix}.fc1",
         )
         self.fc2 = RowParallelLinear(
             config.intermediate_size,
             config.hidden_size,
             bias=True,
             quant_config=quant_config,
+            prefix=f"{prefix}.fc2",
         )
 
     def forward(self, hidden_states: torch.Tensor) -> torch.Tensor:
@@ -204,13 +210,22 @@ class Idefics2VisionMLP(nn.Module):
 
 class Idefics2EncoderLayer(nn.Module):
 
-    def __init__(self, config: Idefics2Config):
+    def __init__(
+        self,
+        config: Idefics2Config,
+        quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
         self.embed_dim = config.hidden_size
-        self.self_attn = Idefics2VisionAttention(config)
+        self.self_attn = Idefics2VisionAttention(config,
+                                                 quant_config=quant_config,
+                                                 prefix=f"{prefix}.self_attn")
         self.layer_norm1 = nn.LayerNorm(self.embed_dim,
                                         eps=config.layer_norm_eps)
-        self.mlp = Idefics2VisionMLP(config)
+        self.mlp = Idefics2VisionMLP(config,
+                                     quant_config=quant_config,
+                                     prefix=f"{prefix}.mlp")
         self.layer_norm2 = nn.LayerNorm(self.embed_dim,
                                         eps=config.layer_norm_eps)
 
@@ -245,12 +260,20 @@ class Idefics2Encoder(nn.Module):
         config: Idefics2Config
     """
 
-    def __init__(self, config: Idefics2Config):
+    def __init__(
+        self,
+        config: Idefics2Config,
+        quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
+
         self.config = config
         self.layers = nn.ModuleList([
-            Idefics2EncoderLayer(config)
+            Idefics2EncoderLayer(config,
-            for _ in range(config.num_hidden_layers)
+                                 quant_config=quant_config,
+                                 prefix=f"{prefix}.layers.{layer_idx}")
+            for layer_idx in range(config.num_hidden_layers)
         ])
 
     def forward(
@@ -275,12 +298,20 @@ class Idefics2Encoder(nn.Module):
 
 class Idefics2VisionTransformer(nn.Module):
 
-    def __init__(self, config: Idefics2VisionConfig):
+    def __init__(
+        self,
+        config: Idefics2VisionConfig,
+        quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
+
         embed_dim = config.hidden_size
         self.config = config
         self.embeddings = Idefics2VisionEmbeddings(config)
-        self.encoder = Idefics2Encoder(config)
+        self.encoder = Idefics2Encoder(config,
+                                       quant_config=quant_config,
+                                       prefix=f"{prefix}.encoder")
         self.post_layernorm = nn.LayerNorm(embed_dim,
                                            eps=config.layer_norm_eps)
 

vllm/model_executor/models/intern_vit.py

@@ -137,6 +137,7 @@ class InternParallelAttention(nn.Module):
         quant_config: Optional[QuantizationConfig] = None,
         *,
         num_dummy_heads: int = 0,
+        prefix: str = "",
     ) -> None:
         super().__init__()
 
@@ -165,6 +166,7 @@ class InternParallelAttention(nn.Module):
             num_dummy_heads + self.num_heads,
             bias=config.qkv_bias,
             quant_config=quant_config,
+            prefix=f"{prefix}.qkv",
         )
 
         self.qk_normalization = config.qk_normalization
@@ -181,6 +183,7 @@ class InternParallelAttention(nn.Module):
             self.dummy_dim,
             self.embed_dim,
             quant_config=quant_config,
+            prefix=f"{prefix}.proj",
         )
 
     def _apply_qk_norm(self, q: torch.Tensor, k: torch.Tensor):
@@ -284,20 +287,26 @@ class InternSdpaAttention(nn.Module):
 
 class InternMLP(nn.Module):
 
-    def __init__(self,
+    def __init__(
-                 config: PretrainedConfig,
+        self,
-                 quant_config: Optional[QuantizationConfig] = None):
+        config: PretrainedConfig,
+        quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
+
         self.config = config
         self.activation_fn = get_act_fn(config.hidden_act)
         self.fc1 = ColumnParallelLinear(config.hidden_size,
                                         config.intermediate_size,
                                         bias=True,
-                                        quant_config=quant_config)
+                                        quant_config=quant_config,
+                                        prefix=f"{prefix}.fc1")
         self.fc2 = RowParallelLinear(config.intermediate_size,
                                      config.hidden_size,
                                      bias=True,
-                                     quant_config=quant_config)
+                                     quant_config=quant_config,
+                                     prefix=f"{prefix}.fc2")
 
     def forward(self, hidden_states: torch.Tensor) -> torch.Tensor:
         hidden_states, _ = self.fc1(hidden_states)
@@ -315,6 +324,7 @@ class InternVisionEncoderLayer(nn.Module):
         quant_config: Optional[QuantizationConfig] = None,
         *,
         num_dummy_heads: int = 0,
+        prefix: str = "",
     ) -> None:
         super().__init__()
 
@@ -324,9 +334,12 @@ class InternVisionEncoderLayer(nn.Module):
 
         self.attn = self._init_attn(config,
                                     quant_config,
-                                    num_dummy_heads=num_dummy_heads)
+                                    num_dummy_heads=num_dummy_heads,
+                                    prefix=f"{prefix}.attn")
 
-        self.mlp = InternMLP(config, quant_config=quant_config)
+        self.mlp = InternMLP(config,
+                             quant_config=quant_config,
+                             prefix=f"{prefix}.mlp")
         self.norm1 = NORM2FN[self.norm_type](self.embed_dim,
                                              eps=config.layer_norm_eps)
         self.norm2 = NORM2FN[self.norm_type](self.embed_dim,
@@ -343,6 +356,7 @@ class InternVisionEncoderLayer(nn.Module):
         quant_config: Optional[QuantizationConfig],
         *,
         num_dummy_heads: int,
+        prefix: str = "",
     ):
         # fallback to sdpa attention if tp unavailable
         tp_size = get_tensor_model_parallel_world_size()
@@ -351,7 +365,8 @@ class InternVisionEncoderLayer(nn.Module):
         if USE_XFORMERS_OPS and (num_heads + num_dummy_heads) % tp_size == 0:
             return InternParallelAttention(config,
                                            quant_config=quant_config,
-                                           num_dummy_heads=num_dummy_heads)
+                                           num_dummy_heads=num_dummy_heads,
+                                           prefix=prefix)
 
         return InternSdpaAttention(config, num_dummy_heads=num_dummy_heads)
 
@@ -377,6 +392,7 @@ class InternVisionEncoder(nn.Module):
         *,
         num_hidden_layers_override: Optional[int] = None,
         num_dummy_heads: int = 0,
+        prefix: str = "",
     ):
         super().__init__()
 
@@ -390,8 +406,9 @@ class InternVisionEncoder(nn.Module):
         self.layers = nn.ModuleList([
             InternVisionEncoderLayer(config,
                                      quant_config,
-                                     num_dummy_heads=num_dummy_heads)
+                                     num_dummy_heads=num_dummy_heads,
-            for _ in range(num_hidden_layers)
+                                     prefix=f"{prefix}.layers.{layer_idx}")
+            for layer_idx in range(num_hidden_layers)
         ])
 
     def forward(self, inputs_embeds: torch.Tensor):
@@ -412,7 +429,8 @@ class InternVisionModel(nn.Module):
         *,
         num_hidden_layers_override: Optional[int] = None,
         num_dummy_heads: int = 0,
-    ):
+        prefix: str = "",
+    ) -> None:
         super().__init__()
 
         self.config = config
@@ -423,6 +441,7 @@ class InternVisionModel(nn.Module):
             quant_config=quant_config,
             num_hidden_layers_override=num_hidden_layers_override,
             num_dummy_heads=num_dummy_heads,
+            prefix=f"{prefix}.encoder",
         )
 
     def get_input_embeddings(self):

vllm/model_executor/models/internvl.py

@@ -19,7 +19,8 @@ from vllm.attention import AttentionMetadata
 from vllm.config import CacheConfig, MultiModalConfig
 from vllm.inputs import (INPUT_REGISTRY, DecoderOnlyInputs, InputContext,
                          token_inputs)
-from vllm.model_executor.layers.quantization import QuantizationConfig
+from vllm.model_executor.layers.quantization import (AWQConfig,
+                                                     QuantizationConfig)
 from vllm.model_executor.layers.sampler import Sampler, SamplerOutput
 from vllm.model_executor.models.intern_vit import (InternVisionModel,
                                                    InternVisionPatchModel)
@@ -418,11 +419,11 @@ class InternVLChatModel(nn.Module, SupportsMultiModal, SupportsPP):
 
         self.config = config
         self.multimodal_config = multimodal_config
+        self._patch_quant_config(config, quant_config)
 
         image_size = config.force_image_size or config.vision_config.image_size
         patch_size = config.vision_config.patch_size
         self.patch_size = patch_size
-        self.select_layer = config.select_layer
         self.num_image_token = int(
             (image_size // patch_size)**2 * (config.downsample_ratio**2))
         self.downsample_ratio = config.downsample_ratio
@@ -430,7 +431,12 @@ class InternVLChatModel(nn.Module, SupportsMultiModal, SupportsPP):
 
         self.llm_arch_name = config.text_config.architectures[0]
         self.is_mono = self.llm_arch_name == 'InternLM2VEForCausalLM'
-        self.vision_model = self._init_vision_model(config, self.is_mono)
+        self.vision_model = self._init_vision_model(
+            config,
+            quant_config=quant_config,
+            is_mono=self.is_mono,
+            prefix="vision_model",
+        )
 
         self.language_model = init_vllm_registered_model(
             config.text_config, cache_config, quant_config)
@@ -441,6 +447,18 @@ class InternVLChatModel(nn.Module, SupportsMultiModal, SupportsPP):
         self.make_empty_intermediate_tensors = (
             self.language_model.make_empty_intermediate_tensors)
 
+    def _patch_quant_config(self, config: PretrainedConfig,
+                            quant_config: QuantizationConfig):
+        # the awq models from OpenGVLab missing `modules_to_not_convert`
+        # patch the quant_config to add `modules_to_not_convert` back
+        if isinstance(quant_config, AWQConfig):
+            text_config = config.text_config
+            llm_quant_config = getattr(text_config, "quantization_config",
+                                       None)
+            if (not quant_config.modules_to_not_convert) and \
+                (llm_quant_config is not None):
+                quant_config.modules_to_not_convert.append("vision_model")
+
     @cached_property
     def sampler(self):
         if hasattr(self.language_model, "sampler"):
@@ -448,17 +466,28 @@ class InternVLChatModel(nn.Module, SupportsMultiModal, SupportsPP):
 
         return Sampler()
 
-    def _init_vision_model(self, config: PretrainedConfig, is_mono: bool):
+    def _init_vision_model(
+        self,
+        config: PretrainedConfig,
+        quant_config: Optional[QuantizationConfig],
+        *,
+        is_mono: bool,
+        prefix: str,
+    ):
         if not is_mono:
-            vision_feature_layer = self.select_layer
+            vision_feature_layer = config.select_layer
             if vision_feature_layer < 0:
                 num_hidden_layers = config.vision_config.num_hidden_layers \
                     + vision_feature_layer + 1
             else:
                 num_hidden_layers = vision_feature_layer + 1
+
             return InternVisionModel(
                 config.vision_config,
-                num_hidden_layers_override=num_hidden_layers)
+                quant_config=quant_config,
+                num_hidden_layers_override=num_hidden_layers,
+                prefix=prefix,
+            )
         else:
             return InternVisionPatchModel(config.vision_config)
 

vllm/model_executor/models/llava.py

@@ -1,12 +1,12 @@
 from functools import cached_property
-from typing import (Iterable, List, Literal, Mapping, Optional, Tuple,
+from typing import (Iterable, List, Literal, Mapping, Optional, Protocol,
-                    TypedDict, Union)
+                    Tuple, TypedDict, Union)
 
 import torch
 import torch.nn as nn
 from PIL import Image
 from transformers import (CLIPVisionConfig, LlavaConfig, PixtralVisionConfig,
-                          SiglipVisionConfig)
+                          PretrainedConfig, SiglipVisionConfig)
 
 from vllm.attention import AttentionMetadata
 from vllm.config import CacheConfig, MultiModalConfig
@@ -200,7 +200,17 @@ def input_processor_for_llava(ctx: InputContext, inputs: DecoderOnlyInputs):
     raise NotImplementedError(msg)
 
 
-def _init_vision_tower(hf_config: LlavaConfig):
+class LlavaLikeConfig(Protocol):
+    vision_config: PretrainedConfig
+    vision_feature_layer: int
+
+
+def init_vision_tower_for_llava(
+    hf_config: LlavaLikeConfig,
+    quant_config: Optional[QuantizationConfig],
+    *,
+    require_post_norm: Optional[bool] = None,
+):
     vision_config = hf_config.vision_config
 
     # Initialize the vision tower only up to the required feature layer
@@ -214,16 +224,24 @@ def _init_vision_tower(hf_config: LlavaConfig):
     if isinstance(vision_config, CLIPVisionConfig):
         return CLIPVisionModel(
             vision_config,
+            quant_config,
             num_hidden_layers_override=num_hidden_layers,
+            require_post_norm=require_post_norm,
         )
     elif isinstance(vision_config, SiglipVisionConfig):
         return SiglipVisionModel(
             vision_config,
+            quant_config,
             num_hidden_layers_override=num_hidden_layers,
+            require_post_norm=require_post_norm,
         )
     elif isinstance(vision_config, PixtralVisionConfig):
-        # TODO: allow layer override?
+        return PixtralHFVisionModel(
-        return PixtralHFVisionModel(vision_config)
+            vision_config,
+            quant_config,
+            num_hidden_layers_override=num_hidden_layers,
+            require_post_norm=require_post_norm,
+        )
 
     msg = f"Unsupported vision config: {type(vision_config)}"
     raise NotImplementedError(msg)
@@ -255,7 +273,7 @@ class LlavaForConditionalGeneration(nn.Module, SupportsMultiModal, SupportsPP):
             config.projector_hidden_act = "gelu"
 
         # TODO: Optionally initializes this for supporting embeddings.
-        self.vision_tower = _init_vision_tower(config)
+        self.vision_tower = init_vision_tower_for_llava(config, quant_config)
         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

@@ -26,7 +26,7 @@ from .clip import (CLIPVisionModel, dummy_image_for_clip,
                    dummy_seq_data_for_clip, get_clip_image_feature_size,
                    get_clip_patch_grid_length, input_processor_for_clip)
 from .interfaces import SupportsMultiModal, SupportsPP
-from .llava import LlavaMultiModalProjector
+from .llava import LlavaMultiModalProjector, init_vision_tower_for_llava
 from .siglip import (SiglipVisionModel, dummy_image_for_siglip,
                      dummy_seq_data_for_siglip, get_siglip_image_feature_size,
                      get_siglip_patch_grid_length, input_processor_for_siglip)
@@ -259,32 +259,6 @@ def input_processor_for_llava_next(ctx: InputContext,
     raise NotImplementedError(msg)
 
 
-def _init_vision_tower(hf_config: LlavaNextConfig):
-    vision_config = hf_config.vision_config
-
-    # Initialize the vision tower only up to the required feature layer
-    vision_feature_layer = hf_config.vision_feature_layer
-    if vision_feature_layer < 0:
-        num_hidden_layers = hf_config.vision_config.num_hidden_layers \
-            + vision_feature_layer + 1
-    else:
-        num_hidden_layers = vision_feature_layer + 1
-
-    if isinstance(vision_config, CLIPVisionConfig):
-        return CLIPVisionModel(
-            vision_config,
-            num_hidden_layers_override=num_hidden_layers,
-        )
-    elif isinstance(vision_config, SiglipVisionConfig):
-        return SiglipVisionModel(
-            vision_config,
-            num_hidden_layers_override=num_hidden_layers,
-        )
-
-    msg = f"Unsupported vision config: {type(vision_config)}"
-    raise NotImplementedError(msg)
-
-
 @MULTIMODAL_REGISTRY.register_image_input_mapper()
 @MULTIMODAL_REGISTRY.register_max_image_tokens(get_max_llava_next_image_tokens)
 @INPUT_REGISTRY.register_dummy_data(dummy_data_for_llava_next)
@@ -303,7 +277,7 @@ class LlavaNextForConditionalGeneration(nn.Module, SupportsMultiModal,
         self.multimodal_config = multimodal_config
 
         # TODO: Optionally initializes this for supporting embeddings.
-        self.vision_tower = _init_vision_tower(config)
+        self.vision_tower = init_vision_tower_for_llava(config, quant_config)
         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

@@ -26,6 +26,7 @@ from vllm.utils import is_list_of
 
 from .clip import dummy_image_for_clip, dummy_seq_data_for_clip
 from .interfaces import SupportsMultiModal, SupportsPP
+from .llava import init_vision_tower_for_llava
 from .siglip import (SiglipVisionModel, dummy_image_for_siglip,
                      dummy_seq_data_for_siglip)
 from .utils import (AutoWeightsLoader, init_vllm_registered_model,
@@ -179,32 +180,6 @@ def input_processor_for_llava_next_video(ctx: InputContext,
     raise NotImplementedError(msg)
 
 
-def _init_vision_tower(hf_config: LlavaNextVideoConfig):
-    vision_config = hf_config.vision_config
-
-    # Initialize the vision tower only up to the required feature layer
-    vision_feature_layer = hf_config.vision_feature_layer
-    if vision_feature_layer < 0:
-        num_hidden_layers = hf_config.vision_config.num_hidden_layers \
-            + vision_feature_layer + 1
-    else:
-        num_hidden_layers = vision_feature_layer + 1
-
-    if isinstance(vision_config, CLIPVisionConfig):
-        return CLIPVisionModel(
-            vision_config,
-            num_hidden_layers_override=num_hidden_layers,
-        )
-    elif isinstance(vision_config, SiglipVisionConfig):
-        return SiglipVisionModel(
-            vision_config,
-            num_hidden_layers_override=num_hidden_layers,
-        )
-
-    msg = f"Unsupported vision config: {type(vision_config)}"
-    raise NotImplementedError(msg)
-
-
 # adopted from transformers modeling_llava_next_video.py
 class LlavaNextVideoPooler(nn.Module):
 
@@ -281,7 +256,7 @@ 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(config)
+        self.vision_tower = init_vision_tower_for_llava(config, quant_config)
         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

@@ -31,6 +31,7 @@ from .clip import (CLIPVisionModel, dummy_seq_data_for_clip,
                    dummy_video_for_clip, get_clip_image_feature_size,
                    get_clip_patch_grid_length, input_processor_for_clip)
 from .interfaces import SupportsMultiModal, SupportsPP
+from .llava import init_vision_tower_for_llava
 from .siglip import (SiglipVisionModel, dummy_seq_data_for_siglip,
                      dummy_video_for_siglip, get_siglip_image_feature_size,
                      get_siglip_patch_grid_length, input_processor_for_siglip)
@@ -357,32 +358,6 @@ def input_processor_for_llava_onevision(ctx: InputContext,
     raise NotImplementedError(msg)
 
 
-def _init_vision_tower(hf_config: LlavaOnevisionConfig):
-    vision_config = hf_config.vision_config
-
-    # Initialize the vision tower only up to the required feature layer
-    vision_feature_layer = hf_config.vision_feature_layer
-    if vision_feature_layer < 0:
-        num_hidden_layers = hf_config.vision_config.num_hidden_layers \
-            + vision_feature_layer + 1
-    else:
-        num_hidden_layers = vision_feature_layer + 1
-
-    if isinstance(vision_config, CLIPVisionConfig):
-        return CLIPVisionModel(
-            vision_config,
-            num_hidden_layers_override=num_hidden_layers,
-        )
-    elif isinstance(vision_config, SiglipVisionConfig):
-        return SiglipVisionModel(
-            vision_config,
-            num_hidden_layers_override=num_hidden_layers,
-        )
-
-    msg = f"Unsupported vision config: {type(vision_config)}"
-    raise NotImplementedError(msg)
-
-
 class LlavaOnevisionMultiModalProjector(nn.Module):
 
     def __init__(self, config: LlavaOnevisionConfig):
@@ -425,7 +400,7 @@ 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(config)
+        self.vision_tower = init_vision_tower_for_llava(config, quant_config)
         self.multi_modal_projector = LlavaOnevisionMultiModalProjector(config)
         self.language_model = init_vllm_registered_model(
             config.text_config, cache_config, quant_config)

vllm/model_executor/models/minicpmv.py

@@ -395,7 +395,7 @@ class MiniCPMVBaseModel(nn.Module, SupportsMultiModal, SupportsPP):
 
         self.version = get_version_by_config(self.config)
         self.llm = self.init_llm(config, cache_config, quant_config)
-        self.vpm = self.init_vision_module()
+        self.vpm = self.init_vision_module(config, quant_config)
         param_dtype = torch.get_default_dtype()
         self.vpm.to(dtype=param_dtype)
         self.vision_dim = (self.vpm.embed_dim if self.version == (2, 0) else
@@ -647,7 +647,11 @@ class MiniCPMVBaseModel(nn.Module, SupportsMultiModal, SupportsPP):
     ) -> nn.Module:
         raise NotImplementedError
 
-    def init_vision_module(self) -> nn.Module:
+    def init_vision_module(
+        self,
+        config: PretrainedConfig,
+        quant_config: Optional[QuantizationConfig],
+    ) -> nn.Module:
         raise NotImplementedError
 
     def init_resampler(self, embed_dim: int, vision_dim: int) -> nn.Module:
@@ -693,7 +697,11 @@ class MiniCPMV2_0(MiniCPMVBaseModel):
                                        quant_config=quant_config),
                           name="model")
 
-    def init_vision_module(self) -> nn.Module:
+    def init_vision_module(
+        self,
+        config: PretrainedConfig,
+        quant_config: Optional[QuantizationConfig],
+    ) -> nn.Module:
         # TODO :refactor this vision model
         try:
             import timm
@@ -817,8 +825,13 @@ class MiniCPMV2_5(MiniCPMVBaseModel, SupportsLoRA):
                                      quant_config=quant_config),
                           name="model")
 
-    def init_vision_module(self) -> nn.Module:
+    def init_vision_module(
-        model = Idefics2VisionTransformer(self.config.vision_config)
+        self,
+        config: PretrainedConfig,
+        quant_config: Optional[QuantizationConfig],
+    ) -> nn.Module:
+        model = Idefics2VisionTransformer(config.vision_config,
+                                          quant_config=quant_config)
         if self.config.drop_vision_last_layer:
             model.encoder.layers = model.encoder.layers[:-1]
         return model
@@ -929,9 +942,13 @@ class MiniCPMV2_6(MiniCPMVBaseModel, SupportsLoRA):
                                      quant_config=quant_config),
                           name="model")
 
-    def init_vision_module(self) -> nn.Module:
+    def init_vision_module(
-
+        self,
-        model = Idefics2VisionTransformer(self.config.vision_config)
+        config: PretrainedConfig,
+        quant_config: Optional[QuantizationConfig],
+    ) -> nn.Module:
+        model = Idefics2VisionTransformer(config.vision_config,
+                                          quant_config=quant_config)
         if self.config.drop_vision_last_layer:
             model.encoder.layers = model.encoder.layers[:-1]
         return model

vllm/model_executor/models/mllama.py

@@ -379,9 +379,13 @@ class MllamaVisionSdpaAttention(nn.Module):
 
 class MllamaVisionEncoderLayer(nn.Module):
 
-    def __init__(self,
+    def __init__(
-                 config: config_mllama.MllamaVisionConfig,
+        self,
-                 is_gated: bool = False):
+        config: config_mllama.MllamaVisionConfig,
+        quant_config: Optional[QuantizationConfig],
+        prefix: str = "",
+        is_gated: bool = False,
+    ) -> None:
         super().__init__()
 
         self.hidden_size = config.hidden_size
@@ -390,7 +394,9 @@ class MllamaVisionEncoderLayer(nn.Module):
         self.intermediate_size = config.intermediate_size
 
         self.self_attn = MllamaVisionSdpaAttention(config)
-        self.mlp = CLIPMLP(config)
+        self.mlp = CLIPMLP(config,
+                           quant_config=quant_config,
+                           prefix=f"{prefix}.mlp")
 
         self.input_layernorm = nn.LayerNorm(self.hidden_size,
                                             eps=config.norm_eps)
@@ -427,16 +433,23 @@ class MllamaVisionEncoderLayer(nn.Module):
 
 class MllamaVisionEncoder(nn.Module):
 
-    def __init__(self,
+    def __init__(
-                 config: config_mllama.MllamaVisionConfig,
+        self,
-                 num_layers=32,
+        config: config_mllama.MllamaVisionConfig,
-                 is_gated=False,
+        quant_config: Optional[QuantizationConfig],
-                 output_hidden_states=None):
+        num_layers: int = 32,
+        is_gated: bool = False,
+        output_hidden_states=None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
         self.config = config
         self.layers = nn.ModuleList([
-            MllamaVisionEncoderLayer(config, is_gated)
+            MllamaVisionEncoderLayer(config,
-            for _ in range(num_layers)
+                                     quant_config=quant_config,
+                                     is_gated=is_gated,
+                                     prefix=f"{prefix}.layers.{layer_idx}")
+            for layer_idx in range(num_layers)
         ])
         self.output_hidden_states = output_hidden_states or []
 
@@ -463,8 +476,14 @@ class MllamaVisionEncoder(nn.Module):
 
 class MllamaVisionModel(nn.Module):
 
-    def __init__(self, config: config_mllama.MllamaVisionConfig):
+    def __init__(
+        self,
+        config: config_mllama.MllamaVisionConfig,
+        quant_config: Optional[QuantizationConfig],
+        prefix: str = "",
+    ) -> None:
         super().__init__()
+
         self.image_size = config.image_size
         self.patch_size = config.patch_size
         self.max_num_tiles = config.max_num_tiles
@@ -500,12 +519,19 @@ class MllamaVisionModel(nn.Module):
         # encoders
         self.transformer = MllamaVisionEncoder(
             config,
+            quant_config,
             config.num_hidden_layers,
             is_gated=False,
-            output_hidden_states=config.intermediate_layers_indices)
+            output_hidden_states=config.intermediate_layers_indices,
-        self.global_transformer = MllamaVisionEncoder(config,
+            prefix=f"{prefix}.transformer",
-                                                      config.num_global_layers,
+        )
-                                                      is_gated=True)
+        self.global_transformer = MllamaVisionEncoder(
+            config,
+            quant_config,
+            config.num_global_layers,
+            is_gated=True,
+            prefix=f"{prefix}.global_transformer",
+        )
 
     def apply_class_embedding(self,
                               hidden_state: torch.Tensor) -> torch.Tensor:
@@ -648,6 +674,7 @@ class MllamaTextCrossAttention(nn.Module):
         config: Optional[config_mllama.MllamaTextConfig] = None,
         layer_idx: Optional[int] = None,
         quant_config: Optional[QuantizationConfig] = None,
+        prefix: str = "",
     ):
         super().__init__()
         self.config = config
@@ -673,6 +700,7 @@ class MllamaTextCrossAttention(nn.Module):
             self.num_key_value_heads,
             bias=False,
             quant_config=quant_config,
+            prefix=f"{prefix}.qkv_proj",
         )
         self.o_proj = RowParallelLinear(
             self.num_heads * self.head_dim,
@@ -680,6 +708,7 @@ class MllamaTextCrossAttention(nn.Module):
             bias=False,
             input_is_parallel=True,
             quant_config=quant_config,
+            prefix=f"{prefix}.o_proj",
         )
         # vllm.model_executor.layers.layernorm.RMSNorm has precision issue,
         # use huggingface's instead
@@ -692,6 +721,7 @@ class MllamaTextCrossAttention(nn.Module):
             self.head_dim,
             self.scaling,
             self.num_local_key_value_heads,
+            prefix=f"{prefix}.attn",
         )
 
     def forward(
@@ -791,15 +821,21 @@ class MllamaCrossAttentionDecoderLayer(torch.nn.Module):
     """Cross-attention transformer block with tanh-gated attention
     and feedforward."""
 
-    def __init__(self, config: config_mllama.MllamaTextConfig, layer_idx: int,
+    def __init__(
-                 quant_config: Optional[QuantizationConfig]) \
+        self,
-        -> None:
+        config: config_mllama.MllamaTextConfig,
+        layer_idx: int,
+        quant_config: Optional[QuantizationConfig],
+        prefix: str = "",
+    ) -> None:
         super().__init__()
+
         self.layer_idx = layer_idx
         self.cross_attn = MllamaTextCrossAttention(
             config=config,
             layer_idx=layer_idx,
             quant_config=quant_config,
+            prefix=f"{prefix}.cross_attn",
         )
 
         self.input_layernorm = RMSNorm(config.hidden_size,
@@ -811,6 +847,7 @@ class MllamaCrossAttentionDecoderLayer(torch.nn.Module):
             intermediate_size=config.intermediate_size,
             hidden_act=config.hidden_act,
             quant_config=quant_config,
+            prefix=f"{prefix}.mlp",
         )
         self.post_attention_layernorm = RMSNorm(config.hidden_size,
                                                 eps=config.rms_norm_eps)
@@ -854,10 +891,15 @@ class MllamaTextModel(nn.Module):
     config_class = config_mllama.MllamaTextConfig
     base_model_prefix = "model"
 
-    def __init__(self, config: config_mllama.MllamaTextConfig,
+    def __init__(
-                 cache_config: Optional[CacheConfig],
+        self,
-                 quant_config: Optional[QuantizationConfig]):
+        config: config_mllama.MllamaTextConfig,
+        cache_config: Optional[CacheConfig],
+        quant_config: Optional[QuantizationConfig],
+        prefix: str = "",
+    ) -> None:
         super().__init__()
+
         self.padding_idx = config.pad_token_id
         self.vocab_size = config.vocab_size
         self.embed_tokens = VocabParallelEmbedding(config.vocab_size + 8,
@@ -869,13 +911,20 @@ class MllamaTextModel(nn.Module):
             if layer_idx in self.cross_attention_layers:
                 layers.append(
                     MllamaCrossAttentionDecoderLayer(
-                        config, layer_idx, quant_config=quant_config))
+                        config,
+                        layer_idx,
+                        quant_config=quant_config,
+                        prefix=f"{prefix}.layers.{layer_idx}",
+                    ))
             else:
                 # TODO: force LlamaDecoderLayer to config.attention_bias=False
                 layers.append(
-                    LlamaDecoderLayer(config,
+                    LlamaDecoderLayer(
-                                      cache_config=cache_config,
+                        config,
-                                      quant_config=quant_config))
+                        cache_config=cache_config,
+                        quant_config=quant_config,
+                        prefix=f"{prefix}.layers.{layer_idx}",
+                    ))
 
         self.layers = nn.ModuleList(layers)
         self.norm = RMSNorm(config.hidden_size, eps=config.rms_norm_eps)
@@ -932,12 +981,19 @@ class MllamaForCausalLM(nn.Module):
         "MllamaCrossAttentionDecoderLayer", "MllamaSelfAttentionDecoderLayer"
     ]
 
-    def __init__(self, config: config_mllama.MllamaTextConfig,
+    def __init__(
-                 cache_config: Optional[CacheConfig],
+        self,
-                 quant_config: Optional[QuantizationConfig]):
+        config: config_mllama.MllamaTextConfig,
+        cache_config: Optional[CacheConfig],
+        quant_config: Optional[QuantizationConfig],
+        prefix: str = "",
+    ) -> None:
         super().__init__()
         self.vocab_size = config.vocab_size
-        self.model = MllamaTextModel(config, cache_config, quant_config)
+        self.model = MllamaTextModel(config,
+                                     cache_config,
+                                     quant_config,
+                                     prefix=f"{prefix}.model")
         self.lm_head = ParallelLMHead(
             config.vocab_size,
             config.hidden_size,
@@ -994,11 +1050,13 @@ class MllamaForConditionalGeneration(nn.Module, SupportsMultiModal):
             config.pad_token_id if config.pad_token_id is not None else -1
         self.image_size = config.vision_config.image_size
 
-        self.vision_model = MllamaVisionModel(config.vision_config)
+        self.vision_model = MllamaVisionModel(config.vision_config,
+                                              quant_config)
         self.language_model = MllamaForCausalLM(
             config.text_config,
             cache_config=cache_config,
             quant_config=quant_config,
+            prefix="language_model",
         )
         self.multi_modal_projector = nn.Linear(
             config.vision_config.vision_output_dim,

vllm/model_executor/models/nvlm_d.py

@@ -4,10 +4,13 @@
 # Copyright (c) 2024 NVIDIA
 # Licensed under Apache 2.0 License [see LICENSE for details]
 # --------------------------------------------------------
+from typing import Optional
+
 import torch.nn as nn
 from transformers import PretrainedConfig
 
 from vllm.inputs import INPUT_REGISTRY
+from vllm.model_executor.layers.quantization import QuantizationConfig
 from vllm.multimodal import MULTIMODAL_REGISTRY
 
 from .intern_vit import InternVisionModel
@@ -56,9 +59,11 @@ class NVLM_D_Model(InternVLChatModel):
         )
 
     def _init_vision_model(self, config: PretrainedConfig,
+                           quant_config: Optional[QuantizationConfig],
                            num_hidden_layers: int):
         # We added additional dummy heads to the original num of heads to make
         # the number of heads divisible by 8.
         return InternVisionModel(config.vision_config,
+                                 quant_config=quant_config,
                                  num_hidden_layers_override=num_hidden_layers,
                                  num_dummy_heads=7)

vllm/model_executor/models/paligemma.py

@@ -142,7 +142,8 @@ class PaliGemmaForConditionalGeneration(nn.Module, SupportsMultiModal,
         self.config = config
         self.multimodal_config = multimodal_config
 
-        self.vision_tower = SiglipVisionModel(config.vision_config)
+        self.vision_tower = SiglipVisionModel(config.vision_config,
+                                              quant_config)
         self.multi_modal_projector = PaliGemmaMultiModalProjector(
             vision_hidden_size=config.vision_config.hidden_size,
             projection_dim=config.vision_config.projection_dim)

vllm/model_executor/models/phi3v.py

@@ -70,7 +70,8 @@ CLIP_VIT_LARGE_PATCH14_336_CONFIG = CLIPVisionConfig(dropout=0.0,
                                                      projection_dim=768)
 
 
-def _init_img_processor(hf_config: PretrainedConfig):
+def _init_img_processor(hf_config: PretrainedConfig,
+                        quant_config: Optional[QuantizationConfig]):
     clip_config = CLIP_VIT_LARGE_PATCH14_336_CONFIG
     layer_idx = hf_config.img_processor.get('layer_idx', -2)
 
@@ -82,7 +83,10 @@ def _init_img_processor(hf_config: PretrainedConfig):
         num_hidden_layers = layer_idx + 1
 
     img_processor = CLIPVisionModel(
-        clip_config, num_hidden_layers_override=num_hidden_layers)
+        clip_config,
+        quant_config,
+        num_hidden_layers_override=num_hidden_layers,
+    )
 
     return img_processor
 
@@ -148,14 +152,15 @@ class Phi3ImageEmbeddingBase(nn.Module):
 class Phi3HDImageEmbedding(Phi3ImageEmbeddingBase):
     """Phi3 Image embedding with HD transform."""
 
-    def __init__(self, config: PretrainedConfig) -> None:
+    def __init__(self, config: PretrainedConfig,
+                 quant_config: Optional[QuantizationConfig]) -> None:
         super().__init__()
 
         # n_embed or hidden_size
         hidden_size = config.n_embd if hasattr(
             config, 'n_embd') else config.hidden_size
 
-        self.img_processor = _init_img_processor(config)
+        self.img_processor = _init_img_processor(config, quant_config)
 
         image_dim_out = config.img_processor['image_dim_out']
         self.num_img_tokens = config.img_processor['num_img_tokens']
@@ -535,7 +540,7 @@ class Phi3VForCausalLM(nn.Module, SupportsMultiModal, SupportsPP):
         )
 
         # TODO: Optionally initializes this for supporting input embeddings.
-        self.vision_embed_tokens = Phi3HDImageEmbedding(config)
+        self.vision_embed_tokens = Phi3HDImageEmbedding(config, quant_config)
 
         self.language_model = LlamaForCausalLM(config, cache_config,
                                                quant_config)

vllm/model_executor/models/pixtral.py

@@ -767,9 +767,17 @@ def input_processor_for_pixtral_hf(
 
 class PixtralHFMLP(nn.Module):
 
-    def __init__(self, config: PixtralVisionConfig):
+    def __init__(
+        self,
+        config: PixtralVisionConfig,
+        quant_config: Optional[QuantizationConfig] = None,
+        *,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
+
         assert config.intermediate_size is not None
+        # TODO: Use quant_config and prefix after optimizing this
         self.gate_proj = nn.Linear(config.hidden_size,
                                    config.intermediate_size,
                                    bias=False)
@@ -787,8 +795,15 @@ class PixtralHFMLP(nn.Module):
 
 class PixtralHFAttention(nn.Module):
 
-    def __init__(self, config: PixtralVisionConfig):
+    def __init__(
+        self,
+        config: PixtralVisionConfig,
+        quant_config: Optional[QuantizationConfig] = None,
+        *,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
+
         self.config = config
         assert not config.hidden_size % config.num_attention_heads
         self.n_heads = config.num_attention_heads
@@ -796,6 +811,7 @@ class PixtralHFAttention(nn.Module):
 
         self.scale = self.head_dim**-0.5
 
+        # TODO: Use quant_config and prefix after optimizing this
         self.q_proj = nn.Linear(config.hidden_size,
                                 config.hidden_size,
                                 bias=False)
@@ -840,11 +856,22 @@ class PixtralHFAttention(nn.Module):
 
 class PixtralHFTransformerBlock(nn.Module):
 
-    def __init__(self, config: PixtralVisionConfig):
+    def __init__(
+        self,
+        config: PixtralVisionConfig,
+        quant_config: Optional[QuantizationConfig] = None,
+        *,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
+
         self.attention_norm = RMSNorm(config.hidden_size, eps=1e-5)
-        self.attention = PixtralHFAttention(config)
+        self.attention = PixtralHFAttention(config,
-        self.feed_forward = PixtralHFMLP(config)
+                                            quant_config=quant_config,
+                                            prefix=f"{prefix}.attention")
+        self.feed_forward = PixtralHFMLP(config,
+                                         quant_config=quant_config,
+                                         prefix=f"{prefix}.feed_forward")
         self.ffn_norm = RMSNorm(config.hidden_size, eps=1e-5)
 
     def forward(
@@ -864,11 +891,27 @@ class PixtralHFTransformerBlock(nn.Module):
 
 class PixtralHFTransformer(nn.Module):
 
-    def __init__(self, config: PixtralVisionConfig):
+    def __init__(
+        self,
+        config: PixtralVisionConfig,
+        quant_config: Optional[QuantizationConfig] = None,
+        *,
+        num_hidden_layers_override: Optional[int] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
-        self.layers = torch.nn.ModuleList()
+
-        for _ in range(config.num_hidden_layers):
+        if num_hidden_layers_override is None:
-            self.layers.append(PixtralHFTransformerBlock(config))
+            num_hidden_layers = config.num_hidden_layers
+        else:
+            num_hidden_layers = num_hidden_layers_override
+
+        self.layers = nn.ModuleList([
+            PixtralHFTransformerBlock(config=config,
+                                      quant_config=quant_config,
+                                      prefix=f"{prefix}.layers.{layer_idx}")
+            for layer_idx in range(num_hidden_layers)
+        ])
 
     def forward(
         self,
@@ -883,7 +926,15 @@ class PixtralHFTransformer(nn.Module):
 
 class PixtralHFVisionModel(nn.Module):
 
-    def __init__(self, config: PixtralVisionConfig):
+    def __init__(
+        self,
+        config: PixtralVisionConfig,
+        quant_config: Optional[QuantizationConfig] = None,
+        *,
+        num_hidden_layers_override: Optional[int] = None,
+        require_post_norm: Optional[bool] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
 
         self.config = config
@@ -895,7 +946,24 @@ class PixtralHFVisionModel(nn.Module):
             bias=False,
         )
         self.ln_pre = RMSNorm(config.hidden_size, eps=1e-5)
-        self.transformer = PixtralHFTransformer(config)
+        self.transformer = PixtralHFTransformer(
+            config,
+            quant_config,
+            num_hidden_layers_override=num_hidden_layers_override,
+            prefix=f"{prefix}.transformer",
+        )
+
+        num_hidden_layers = config.num_hidden_layers
+        if len(self.transformer.layers) > config.num_hidden_layers:
+            raise ValueError(
+                f"The original encoder only has {num_hidden_layers} "
+                f"layers, but you requested {len(self.transformer.layers)} "
+                "layers.")
+
+        if require_post_norm is True:
+            msg = "PixtralHFVisionModel does not have post-layernorm"
+            raise ValueError(msg)
+
         self.dtype = next(self.parameters()).dtype
         self.device = next(self.parameters()).device
         self.patch_positional_embedding = PixtralRotaryEmbedding(

vllm/model_executor/models/siglip.py

@@ -248,8 +248,10 @@ class SiglipParallelAttention(nn.Module):
         self,
         config: SiglipVisionConfig,
         quant_config: Optional[QuantizationConfig] = None,
-    ):
+        prefix: str = "",
+    ) -> None:
         super().__init__()
+
         self.config = config
         self.embed_dim = config.hidden_size
         self.num_heads = config.num_attention_heads
@@ -266,12 +268,14 @@ class SiglipParallelAttention(nn.Module):
             head_size=self.head_dim,
             total_num_heads=self.num_heads,
             quant_config=quant_config,
+            prefix=f"{prefix}.qkv_proj",
         )
 
         self.out_proj = RowParallelLinear(
             input_size=self.embed_dim,
             output_size=self.embed_dim,
             quant_config=quant_config,
+            prefix=f"{prefix}.out_proj",
         )
 
         self.tp_size = get_tensor_model_parallel_world_size()
@@ -314,8 +318,10 @@ class SiglipMLP(nn.Module):
         self,
         config: SiglipVisionConfig,
         quant_config: Optional[QuantizationConfig] = None,
-    ):
+        prefix: str = "",
+    ) -> None:
         super().__init__()
+
         self.config = config
         self.activation_fn = get_act_fn(config.hidden_act)
 
@@ -326,11 +332,13 @@ class SiglipMLP(nn.Module):
             config.hidden_size,
             config.intermediate_size,
             quant_config=quant_config if quantizable else None,
+            prefix=f"{prefix}.fc1",
         )
         self.fc2 = RowParallelLinear(
             config.intermediate_size,
             config.hidden_size,
             quant_config=quant_config if quantizable else None,
+            prefix=f"{prefix}.fc2",
         )
 
     def forward(self, hidden_states: torch.Tensor) -> torch.Tensor:
@@ -346,15 +354,20 @@ class SiglipEncoderLayer(nn.Module):
         self,
         config: SiglipVisionConfig,
         quant_config: Optional[QuantizationConfig] = None,
-    ):
+        prefix: str = "",
+    ) -> None:
         super().__init__()
+
         self.embed_dim = config.hidden_size
 
         num_heads = config.num_attention_heads
         tp_size = get_tensor_model_parallel_world_size()
         if USE_XFORMERS_OPS and num_heads % tp_size == 0:
-            self.self_attn = SiglipParallelAttention(config,
+            self.self_attn = SiglipParallelAttention(
-                                                     quant_config=quant_config)
+                config,
+                quant_config=quant_config,
+                prefix=f"{prefix}.self_attn",
+            )
         else:
             self.self_attn = SiglipSdpaAttention(config)
 
@@ -363,6 +376,7 @@ class SiglipEncoderLayer(nn.Module):
         self.mlp = SiglipMLP(
             config,
             quant_config=quant_config,
+            prefix=f"{prefix}.mlp",
         )
         self.layer_norm2 = nn.LayerNorm(self.embed_dim,
                                         eps=config.layer_norm_eps)
@@ -392,8 +406,10 @@ class SiglipEncoder(nn.Module):
         config: SiglipVisionConfig,
         quant_config: Optional[QuantizationConfig] = None,
         num_hidden_layers_override: Optional[int] = None,
-    ):
+        prefix: str = "",
+    ) -> None:
         super().__init__()
+
         self.config = config
 
         if num_hidden_layers_override is None:
@@ -402,8 +418,10 @@ class SiglipEncoder(nn.Module):
             num_hidden_layers = num_hidden_layers_override
 
         self.layers = nn.ModuleList([
-            SiglipEncoderLayer(config, quant_config=quant_config)
+            SiglipEncoderLayer(config,
-            for _ in range(num_hidden_layers)
+                               quant_config=quant_config,
+                               prefix=f"{prefix}.layers.{layer_idx}")
+            for layer_idx in range(num_hidden_layers)
         ])
 
     def forward(
@@ -424,7 +442,8 @@ class SiglipMultiheadAttentionPoolingHead(nn.Module):
         self,
         config: SiglipVisionConfig,
         quant_config: Optional[QuantizationConfig] = None,
-    ):
+        prefix: str = "",
+    ) -> None:
         super().__init__()
 
         self.probe = nn.Parameter(torch.randn(1, 1, config.hidden_size))
@@ -433,7 +452,9 @@ class SiglipMultiheadAttentionPoolingHead(nn.Module):
             config.hidden_size, config.num_attention_heads, batch_first=True)
         self.layernorm = nn.LayerNorm(config.hidden_size,
                                       eps=config.layer_norm_eps)
-        self.mlp = SiglipMLP(config=config, quant_config=quant_config)
+        self.mlp = SiglipMLP(config=config,
+                             quant_config=quant_config,
+                             prefix=f"{prefix}.mlp")
 
     def forward(self, hidden_state: torch.Tensor) -> torch.Tensor:
         batch_size = hidden_state.shape[0]
@@ -454,9 +475,13 @@ class SiglipVisionTransformer(nn.Module):
         self,
         config: SiglipVisionConfig,
         quant_config: Optional[QuantizationConfig] = None,
+        *,
         num_hidden_layers_override: Optional[int] = None,
-    ):
+        require_post_norm: Optional[bool] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
+
         self.config = config
         embed_dim = config.hidden_size
 
@@ -465,26 +490,34 @@ class SiglipVisionTransformer(nn.Module):
             config,
             quant_config=quant_config,
             num_hidden_layers_override=num_hidden_layers_override,
+            prefix=f"{prefix}.encoder",
         )
 
+        num_hidden_layers = config.num_hidden_layers
         if len(self.encoder.layers) > config.num_hidden_layers:
             raise ValueError(
-                f"The original encoder only has {config.num_hidden_layers} "
+                f"The original encoder only has {num_hidden_layers} "
                 f"layers, but you requested {len(self.encoder.layers)} layers."
             )
-        elif len(self.encoder.layers) == config.num_hidden_layers:
+
+        # If possible, skip post_layernorm to conserve memory
+        if require_post_norm is None:
+            require_post_norm = len(self.encoder.layers) == num_hidden_layers
+
+        if require_post_norm:
             self.post_layernorm = nn.LayerNorm(embed_dim,
                                                eps=config.layer_norm_eps)
         else:
-            # post_layernorm is unused when we extract intermediate features
-            # In this case, we can skip it to conserve memory
             self.post_layernorm = None
 
         self.use_head = (True if not hasattr(config, "vision_use_head") else
                          config.vision_use_head)
         if self.use_head:
             self.head = SiglipMultiheadAttentionPoolingHead(
-                config=config, quant_config=quant_config)
+                config=config,
+                quant_config=quant_config,
+                prefix=f"{prefix}.head",
+            )
 
     def forward(
         self,
@@ -517,8 +550,11 @@ class SiglipVisionModel(nn.Module):
         self,
         config: SiglipVisionConfig,
         quant_config: Optional[QuantizationConfig] = None,
+        *,
         num_hidden_layers_override: Optional[int] = None,
-    ):
+        require_post_norm: Optional[bool] = None,
+        prefix: str = "",
+    ) -> None:
         super().__init__()
 
         num_heads = config.num_attention_heads
@@ -529,6 +565,8 @@ class SiglipVisionModel(nn.Module):
             config,
             quant_config,
             num_hidden_layers_override=num_hidden_layers_override,
+            require_post_norm=require_post_norm,
+            prefix=f"{prefix}.vision_model",
         )
 
     def get_input_embeddings(self) -> nn.Module: