[3/N] Initialize MM components in context managers (I-L) (#32650)

Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>

vllm/model_executor/models/interns1.py

@@ -547,20 +547,20 @@ class InternS1ForConditionalGeneration(
         )
         self.downsample_ratio = config.downsample_ratio
 
-        self.llm_arch_name = config.text_config.architectures[0]
-        self.vision_tower = self._init_vision_model(
-            config,
-            quant_config=quant_config,
-            prefix=maybe_prefix(prefix, "vision_tower"),
-        )
-
-        self.language_model = init_vllm_registered_model(
-            vllm_config=vllm_config,
-            hf_config=config.text_config,
-            prefix=maybe_prefix(prefix, "language_model"),
-        )
+        with self._mark_tower_model(vllm_config, {"image", "video"}):
+            self.vision_tower = self._init_vision_model(
+                config,
+                quant_config=quant_config,
+                prefix=maybe_prefix(prefix, "vision_tower"),
+            )
+            self.multi_modal_projector = self._init_mlp1(config)
 
-        self.multi_modal_projector = self._init_mlp1(config)
+        with self._mark_language_model(vllm_config):
+            self.language_model = init_vllm_registered_model(
+                vllm_config=vllm_config,
+                hf_config=config.text_config,
+                prefix=maybe_prefix(prefix, "language_model"),
+            )
 
         self.img_context_token_id = None
         self.video_context_token_id = None
@@ -699,8 +699,6 @@ class InternS1ForConditionalGeneration(
         ):
             return image_input["data"]
 
-        assert self.vision_tower is not None
-
         image_embeds = self.extract_feature(image_input["pixel_values"])
 
         num_patches = image_input["num_patches"]
@@ -737,9 +735,6 @@ class InternS1ForConditionalGeneration(
     def _set_visual_token_mask(self, input_ids: torch.Tensor) -> None:
         self.visual_token_mask = None
 
-    def get_language_model(self) -> torch.nn.Module:
-        return self.language_model
-
     def embed_multimodal(self, **kwargs: object) -> MultiModalEmbeddings:
         modalities = self._parse_and_validate_multimodal_inputs(**kwargs)
         if not modalities:

vllm/model_executor/models/internvl.py

@@ -1092,22 +1092,24 @@ class InternVLChatModel(nn.Module, SupportsMultiModal, SupportsPP, SupportsLoRA)
         self.downsample_ratio = config.downsample_ratio
         self.ps_version = config.ps_version
 
-        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,
-            quant_config=quant_config,
-            is_mono=self.is_mono,
-            prefix=maybe_prefix(prefix, "vision_model"),
-        )
+        llm_arch_name = config.text_config.architectures[0]
+        self.is_mono = llm_arch_name == "InternLM2VEForCausalLM"
 
-        self.language_model = init_vllm_registered_model(
-            vllm_config=vllm_config,
-            hf_config=config.text_config,
-            prefix=maybe_prefix(prefix, "language_model"),
-        )
+        with self._mark_tower_model(vllm_config, {"image", "video"}):
+            self.vision_model = self._init_vision_model(
+                config,
+                quant_config=quant_config,
+                is_mono=self.is_mono,
+                prefix=maybe_prefix(prefix, "vision_model"),
+            )
+            self.mlp1 = self._init_mlp1(config)
 
-        self.mlp1 = self._init_mlp1(config)
+        with self._mark_language_model(vllm_config):
+            self.language_model = init_vllm_registered_model(
+                vllm_config=vllm_config,
+                hf_config=config.text_config,
+                prefix=maybe_prefix(prefix, "language_model"),
+            )
 
         self.img_context_token_id = None
         self.video_context_token_id = None
@@ -1281,8 +1283,6 @@ class InternVLChatModel(nn.Module, SupportsMultiModal, SupportsPP, SupportsLoRA)
         ):
             return image_input["data"]
 
-        assert self.vision_model is not None
-
         image_embeds = self.extract_feature(image_input["pixel_values_flat"])
 
         num_patches = image_input["num_patches"]
@@ -1325,9 +1325,6 @@ class InternVLChatModel(nn.Module, SupportsMultiModal, SupportsPP, SupportsLoRA)
         else:
             self.visual_token_mask = None
 
-    def get_language_model(self) -> torch.nn.Module:
-        return self.language_model
-
     def embed_multimodal(self, **kwargs: object) -> MultiModalEmbeddings:
         modalities = self._parse_and_validate_multimodal_inputs(**kwargs)
         if not modalities:

vllm/model_executor/models/isaac.py

@@ -1342,11 +1342,14 @@ class IsaacForConditionalGeneration(
                 "mrope_interleaved", rope_scaling["mrope_interleaved"]
             )
         target_cfg.rope_parameters = rope_parameters
-        self.language_model = init_vllm_registered_model(
-            vllm_config=vllm_config,
-            architectures=["Qwen3ForCausalLM"],
-            prefix=maybe_prefix(prefix, "language_model"),
-        )
+
+        with self._mark_language_model(vllm_config):
+            self.language_model = init_vllm_registered_model(
+                vllm_config=vllm_config,
+                architectures=["Qwen3ForCausalLM"],
+                prefix=maybe_prefix(prefix, "language_model"),
+            )
+
         self.make_empty_intermediate_tensors = (
             self.language_model.make_empty_intermediate_tensors
         )
@@ -1363,14 +1366,16 @@ class IsaacForConditionalGeneration(
             vision_cfg._attn_implementation = attn_impl
 
         hidden_dim = vision_cfg.hidden_size * (vision_cfg.pixel_shuffle_scale_factor**2)
-        self.vision_embedding = IsaacVisionEmbedding(
-            vision_cfg=vision_cfg,
-            hidden_dim=hidden_dim,
-            output_dim=config.hidden_size,
-            quant_config=quant_config,
-            multimodal_config=self.multimodal_config,
-            prefix=maybe_prefix(prefix, "vision_embedding"),
-        )
+
+        with self._mark_tower_model(vllm_config, "image"):
+            self.vision_embedding = IsaacVisionEmbedding(
+                vision_cfg=vision_cfg,
+                hidden_dim=hidden_dim,
+                output_dim=config.hidden_size,
+                quant_config=quant_config,
+                multimodal_config=self.multimodal_config,
+                prefix=maybe_prefix(prefix, "vision_embedding"),
+            )
 
     def iter_mm_grid_hw(
         self, input_tokens: list[int], mm_features: list[MultiModalFeatureSpec]
@@ -1457,18 +1462,6 @@ class IsaacForConditionalGeneration(
             return ()
         return self._process_image_input(image_input)
 
-    def get_multimodal_embeddings(
-        self, **kwargs: object
-    ) -> MultiModalEmbeddings | None:
-        # Backward compatibility for older runners.
-        embeddings = self.embed_multimodal(**kwargs)
-        if not embeddings:
-            return []
-        return embeddings
-
-    def get_language_model(self) -> torch.nn.Module:
-        return self.language_model
-
     def forward(
         self,
         input_ids: torch.Tensor,

vllm/model_executor/models/kanana_v.py

@@ -586,16 +586,21 @@ class KananaVForConditionalGeneration(nn.Module, SupportsMultiModal, SupportsPP)
         config = vllm_config.model_config.hf_config
         self.config = config
 
-        self.vision_model = CustomQwen2VLVE._from_config(config.vision_config)
-        self.abstractor = DynamicCAbstractor(
-            config.projector_config, num_input_tokens=self.vision_model.get_num_tokens()
-        )
-        self.language_model = init_vllm_registered_model(
-            vllm_config=vllm_config,
-            hf_config=config.text_config,
-            prefix=maybe_prefix(prefix, "model"),
-            architectures=["LlamaForCausalLM"],
-        )
+        with self._mark_tower_model(vllm_config, "image"):
+            self.vision_model = CustomQwen2VLVE._from_config(config.vision_config)
+            self.abstractor = DynamicCAbstractor(
+                config.projector_config,
+                num_input_tokens=self.vision_model.get_num_tokens(),
+            )
+
+        with self._mark_language_model(vllm_config):
+            self.language_model = init_vllm_registered_model(
+                vllm_config=vllm_config,
+                hf_config=config.text_config,
+                prefix=maybe_prefix(prefix, "model"),
+                architectures=["LlamaForCausalLM"],
+            )
+
         self.make_empty_intermediate_tensors = (
             self.language_model.make_empty_intermediate_tensors
         )
@@ -718,9 +723,6 @@ class KananaVForConditionalGeneration(nn.Module, SupportsMultiModal, SupportsPP)
         visual_embeds = self.forward_projector(visual_features, image_metas=image_metas)
         return visual_embeds
 
-    def get_language_model(self) -> torch.nn.Module:
-        return self.language_model
-
     def embed_multimodal(self, **kwargs: object) -> MultiModalEmbeddings:
         image_input = self._parse_and_validate_image_input(**kwargs)
         if image_input is None:

vllm/model_executor/models/keye.py

@@ -1242,7 +1242,7 @@ class KeyeMultiModalProcessor(BaseMultiModalProcessor[KeyeProcessingInfo]):
         return _keye_field_config(hf_inputs)
 
 
-class BaseKeyeModule(nn.Module):
+class BaseKeyeModule(nn.Module, SupportsMultiModal):
     packed_modules_mapping = {
         "qkv_proj": [
             "q_proj",
@@ -1280,25 +1280,26 @@ class BaseKeyeModule(nn.Module):
         self.config = config
         self.multimodal_config = multimodal_config
 
-        self.visual = KeyeSiglipVisionModel(
-            config.vision_config,
-            quant_config=quant_config,
-            multimodal_config=multimodal_config,
-            prefix=maybe_prefix(prefix, "visual"),
-        )
-
-        self.mlp_AR = self._build_projector(
-            config,
-            config.vision_config,
-            quant_config=quant_config,
-            prefix=maybe_prefix(prefix, "mlp_AR"),
-        )
+        with self._mark_tower_model(vllm_config, {"image", "video"}):
+            self.visual = KeyeSiglipVisionModel(
+                config.vision_config,
+                quant_config=quant_config,
+                multimodal_config=multimodal_config,
+                prefix=maybe_prefix(prefix, "visual"),
+            )
+            self.mlp_AR = self._build_projector(
+                config,
+                config.vision_config,
+                quant_config=quant_config,
+                prefix=maybe_prefix(prefix, "mlp_AR"),
+            )
 
-        self.language_model = init_vllm_registered_model(
-            vllm_config=vllm_config,
-            prefix=maybe_prefix(prefix, "language_model"),
-            architectures=["Qwen3ForCausalLM"],
-        )
+        with self._mark_language_model(vllm_config):
+            self.language_model = init_vllm_registered_model(
+                vllm_config=vllm_config,
+                prefix=maybe_prefix(prefix, "language_model"),
+                architectures=["Qwen3ForCausalLM"],
+            )
 
         self.make_empty_intermediate_tensors = (
             self.language_model.make_empty_intermediate_tensors
@@ -1312,7 +1313,7 @@ class BaseKeyeModule(nn.Module):
         quant_config: QuantizationConfig | None = None,
         prefix: str = "",
     ) -> nn.Module:
-        raise ValueError("Need projector")
+        raise NotImplementedError("Need projector")
 
     def _process_image_input(self, image_input: Any) -> tuple[torch.Tensor, ...]:
         siglip_position_ids = list()
@@ -1429,9 +1430,6 @@ class BaseKeyeModule(nn.Module):
 
         return modalities
 
-    def get_language_model(self) -> torch.nn.Module:
-        return self.language_model
-
     def embed_multimodal(self, **kwargs: object) -> MultiModalEmbeddings | None:
         modalities = self._parse_and_validate_multimodal_inputs(**kwargs)
         if not modalities:

vllm/model_executor/models/kimi_vl.py

@@ -42,7 +42,6 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-import copy
 import math
 from collections.abc import Iterable, Mapping, Sequence
 from dataclasses import dataclass
@@ -50,23 +49,12 @@ from typing import Annotated, Any, Literal
 
 import torch
 from torch import nn
-from transformers import BatchFeature, DeepseekV2Config
+from transformers import BatchFeature
 from transformers.activations import GELUActivation
 
 from vllm.config import VllmConfig
 from vllm.config.multimodal import BaseDummyOptions
-from vllm.distributed import get_pp_group
-from vllm.model_executor.layers.fused_moe import FusedMoE
 from vllm.model_executor.layers.linear import ReplicatedLinear
-from vllm.model_executor.layers.logits_processor import LogitsProcessor
-from vllm.model_executor.layers.vocab_parallel_embedding import (
-    ParallelLMHead,
-)
-from vllm.model_executor.model_loader.weight_utils import (
-    default_weight_loader,
-    maybe_remap_kv_scale_name,
-)
-from vllm.model_executor.models.deepseek_v2 import DeepseekV2Model
 from vllm.model_executor.models.interfaces import SupportsMultiModal, SupportsPP
 from vllm.model_executor.models.moonvit import MoonVitPretrainedModel
 from vllm.multimodal import MULTIMODAL_REGISTRY
@@ -92,7 +80,7 @@ from vllm.sequence import IntermediateTensors
 from vllm.transformers_utils.configs import KimiVLConfig, MoonViTConfig
 from vllm.utils.tensor_schema import TensorSchema, TensorShape
 
-from .utils import PPMissingLayer, is_pp_missing_parameter, maybe_prefix
+from .utils import AutoWeightsLoader, init_vllm_registered_model, maybe_prefix
 from .vision import run_dp_sharded_mrope_vision_model
 
 
@@ -315,48 +303,41 @@ class KimiVLForConditionalGeneration(nn.Module, SupportsMultiModal, SupportsPP):
         super().__init__()
         model_config = vllm_config.model_config
         config: KimiVLConfig = model_config.hf_config
-        self.config = config
         quant_config = vllm_config.quant_config
 
+        self.config = config
+        self.quant_config = quant_config
+
         assert isinstance(config.vision_config, MoonViTConfig)
         self.use_data_parallel = (
             model_config.multimodal_config.mm_encoder_tp_mode == "data"
         )
         self.hidden_size = config.text_config.hidden_size
-        self.vision_tower = MoonVitPretrainedModel(
-            config.vision_config,
-            multimodal_config=model_config.multimodal_config,
-            prefix=maybe_prefix(prefix, "vision_tower"),
-        )
 
-        self.multi_modal_projector = KimiVLMultiModalProjector(
-            config=config,
-            use_data_parallel=self.use_data_parallel,
-            prefix=maybe_prefix(prefix, "multi_modal_projector"),
-        )
+        with self._mark_tower_model(vllm_config, "image"):
+            self.vision_tower = MoonVitPretrainedModel(
+                config.vision_config,
+                multimodal_config=model_config.multimodal_config,
+                prefix=maybe_prefix(prefix, "vision_tower"),
+            )
+            self.multi_modal_projector = KimiVLMultiModalProjector(
+                config=config,
+                use_data_parallel=self.use_data_parallel,
+                prefix=maybe_prefix(prefix, "multi_modal_projector"),
+            )
 
-        self.quant_config = quant_config
-        sub_vllm_config = copy.deepcopy(vllm_config)
-        sub_vllm_config.model_config.hf_config = (
-            sub_vllm_config.model_config.hf_config.text_config
-        )
-        self.language_model = DeepseekV2Model(
-            vllm_config=sub_vllm_config,
-            prefix=maybe_prefix(prefix, "language_model"),
-        )
-        if get_pp_group().is_last_rank:
-            self.lm_head = ParallelLMHead(
-                config.vocab_size,
-                config.text_config.hidden_size,
-                prefix=maybe_prefix(prefix, "lm_head"),
+        with self._mark_language_model(vllm_config):
+            self.language_model = init_vllm_registered_model(
+                vllm_config=vllm_config,
+                hf_config=config.text_config,
+                prefix=maybe_prefix(prefix, "language_model"),
+                architectures=["DeepseekV2ForCausalLM"],
             )
-        else:
-            self.lm_head = PPMissingLayer()
+
         self.make_empty_intermediate_tensors = (
             self.language_model.make_empty_intermediate_tensors
         )
-        logit_scale = getattr(config, "logit_scale", 1.0)
-        self.logits_processor = LogitsProcessor(config.vocab_size, scale=logit_scale)
+
         self.media_placeholder: int = self.config.media_placeholder_token_id
 
     def _parse_and_validate_image_input(
@@ -378,8 +359,6 @@ class KimiVLForConditionalGeneration(nn.Module, SupportsMultiModal, SupportsPP):
     # perform vt on processored pixel_values
     @torch.inference_mode()
     def _process_image_pixels(self, inputs: KimiVLImagePixelInputs) -> torch.Tensor:
-        assert self.vision_tower is not None
-
         pixel_values = inputs["pixel_values"]
         image_grid_hws = inputs["image_grid_hws"]
         if self.use_data_parallel:
@@ -399,9 +378,6 @@ class KimiVLForConditionalGeneration(nn.Module, SupportsMultiModal, SupportsPP):
         lengths = [x.shape[0] for x in image_features]
         return self.multi_modal_projector(torch.cat(image_features)).split(lengths)
 
-    def get_language_model(self) -> torch.nn.Module:
-        return self.language_model
-
     def embed_multimodal(self, **kwargs: object) -> NestedTensors | None:
         # Validate the multimodal input keyword arguments
         image_input = self._parse_and_validate_image_input(**kwargs)
@@ -433,145 +409,8 @@ class KimiVLForConditionalGeneration(nn.Module, SupportsMultiModal, SupportsPP):
         return hidden_states
 
     def compute_logits(self, hidden_states: torch.Tensor, **kwargs) -> torch.Tensor:
-        logits = self.logits_processor(self.lm_head, hidden_states, **kwargs)
-        return logits
+        return self.language_model.compute_logits(hidden_states)
 
     def load_weights(self, weights: Iterable[tuple[str, torch.Tensor]]):
-        config = self.config.text_config
-        _KEYS_TO_MODIFY_MAPPING = {
-            "language_model.lm_head": "lm_head",
-            "language_model.model": "language_model",
-        }
-        # only doing this for language model part for now.
-        stacked_params_mapping = [
-            # (param_name, shard_name, shard_id)
-            (".gate_up_proj", ".gate_proj", 0),
-            (".gate_up_proj", ".up_proj", 1),
-        ]
-        use_mha = (
-            config.model_type == "deepseek"
-            or config.qk_nope_head_dim + config.qk_rope_head_dim == 0
-        )
-        if use_mha:
-            stacked_params_mapping += [
-                (".qkv_proj", ".q_proj", "q"),
-                (".qkv_proj", ".k_proj", "k"),
-                (".qkv_proj", ".v_proj", "v"),
-            ]
-        if getattr(config, "n_routed_experts", None):
-            # Params for weights, fp8 weight scales, fp8 activation scales
-            # (param_name, weight_name, expert_id, shard_id)
-            expert_params_mapping = FusedMoE.make_expert_params_mapping(
-                self,
-                ckpt_gate_proj_name="gate_proj",
-                ckpt_down_proj_name="down_proj",
-                ckpt_up_proj_name="up_proj",
-                num_experts=config.n_routed_experts,
-            )
-        else:
-            expert_params_mapping = []
-
-        params_dict = dict(self.named_parameters())
-
-        for args in weights:
-            name, loaded_weight = args[:2]
-            kwargs = args[2] if len(args) > 2 else {}
-            if "rotary_emb.inv_freq" in name:
-                continue
-
-            spec_layer = get_spec_layer_idx_from_weight_name(config, name)
-            if spec_layer is not None:
-                continue  # skip spec decode layers for main model
-
-            if "rotary_emb.cos_cached" in name or "rotary_emb.sin_cached" in name:
-                # Models trained using ColossalAI may include these tensors in
-                # the checkpoint. Skip them.
-                continue
-            for key_to_modify, new_key in _KEYS_TO_MODIFY_MAPPING.items():
-                if key_to_modify in name:
-                    name = name.replace(key_to_modify, new_key)
-            use_default_weight_loading = False
-            if "vision" in name:
-                if self.vision_tower is not None:
-                    # We only do sharding for language model and
-                    # not vision model for now.
-                    use_default_weight_loading = True
-            else:
-                for param_name, weight_name, shard_id in stacked_params_mapping:
-                    if weight_name not in name:
-                        continue
-                    # We have mlp.experts[0].gate_proj in the checkpoint.
-                    # Since we handle the experts below in expert_params_mapping,
-                    # we need to skip here BEFORE we update the name, otherwise
-                    # name will be updated to mlp.experts[0].gate_up_proj, which
-                    # will then be updated below in expert_params_mapping
-                    # for mlp.experts[0].gate_gate_up_proj, which breaks load.
-                    if ("mlp.experts." in name) and name not in params_dict:
-                        continue
-                    name = name.replace(weight_name, param_name)
-                    # Skip loading extra bias for GPTQ models.
-                    if name.endswith(".bias") and name not in params_dict:
-                        continue
-
-                    if is_pp_missing_parameter(name, self):
-                        continue
-
-                    param = params_dict[name]
-                    weight_loader = param.weight_loader
-                    weight_loader(param, loaded_weight, shard_id, **kwargs)
-                    break
-                else:
-                    for idx, (
-                        param_name,
-                        weight_name,
-                        expert_id,
-                        shard_id,
-                    ) in enumerate(expert_params_mapping):
-                        if weight_name not in name:
-                            continue
-                        name = name.replace(weight_name, param_name)
-
-                        if is_pp_missing_parameter(name, self):
-                            continue
-
-                        param = params_dict[name]
-                        weight_loader = param.weight_loader
-                        weight_loader(
-                            param,
-                            loaded_weight,
-                            name,
-                            expert_id=expert_id,
-                            shard_id=shard_id,
-                            **kwargs,
-                        )
-                        break
-                    else:
-                        use_default_weight_loading = True
-            if use_default_weight_loading:
-                # Skip loading extra bias for GPTQ models.
-                if name.endswith(".bias") and name not in params_dict:
-                    continue
-                # Remapping the name of FP8 kv-scale.
-                name = maybe_remap_kv_scale_name(name, params_dict)
-                if name is None:
-                    continue
-
-                if is_pp_missing_parameter(name, self):
-                    continue
-
-                param = params_dict[name]
-                weight_loader = getattr(param, "weight_loader", default_weight_loader)
-                weight_loader(param, loaded_weight, **kwargs)
-
-
-def get_spec_layer_idx_from_weight_name(
-    config: DeepseekV2Config, weight_name: str
-) -> int | None:
-    if hasattr(config, "num_nextn_predict_layers") and (
-        config.num_nextn_predict_layers > 0
-    ):
-        layer_idx = config.num_hidden_layers
-        for i in range(config.num_nextn_predict_layers):
-            if weight_name.startswith(f"model.layers.{layer_idx + i}."):
-                return layer_idx + i
-    return None
+        loader = AutoWeightsLoader(self)
+        return loader.load_weights(weights)

vllm/model_executor/models/lfm2_vl.py

@@ -546,38 +546,37 @@ class Lfm2VLForConditionalGeneration(
         self.multimodal_config = multimodal_config
         self.use_data_parallel = multimodal_config.mm_encoder_tp_mode == "data"
 
-        if vision_config.model_type == "siglip2_vision_model":
-            self.vision_tower = Siglip2Model(
-                config=vision_config,
-                quant_config=quant_config,
-                multimodal_config=multimodal_config,
-                prefix=maybe_prefix(prefix, "vision_tower"),
-            )
-        else:
-            raise ValueError(
-                f"Unsupported visual tokenizer model_type: {vision_config.model_type}"
-            )
+        with self._mark_tower_model(vllm_config, "image"):
+            if vision_config.model_type == "siglip2_vision_model":
+                self.vision_tower = Siglip2Model(
+                    config=vision_config,
+                    quant_config=quant_config,
+                    multimodal_config=multimodal_config,
+                    prefix=maybe_prefix(prefix, "vision_tower"),
+                )
+            else:
+                raise ValueError(
+                    f"Unsupported visual tokenizer type: {vision_config.model_type}"
+                )
 
-        self.multi_modal_projector = Lfm2VLMultiModalProjector(
-            config=config,
-            use_data_parallel=self.use_data_parallel,
-            prefix=f"{prefix}.multi_modal_projector",
-        )
+            self.multi_modal_projector = Lfm2VLMultiModalProjector(
+                config=config,
+                use_data_parallel=self.use_data_parallel,
+                prefix=maybe_prefix(prefix, "multi_modal_projector"),
+            )
 
-        self.language_model = init_vllm_registered_model(
-            vllm_config=vllm_config,
-            hf_config=config.text_config,
-            prefix=maybe_prefix(prefix, "language"),
-            architectures=config.text_config.architectures,
-        )
+        with self._mark_language_model(vllm_config):
+            self.language_model = init_vllm_registered_model(
+                vllm_config=vllm_config,
+                hf_config=config.text_config,
+                prefix=maybe_prefix(prefix, "language"),
+                architectures=config.text_config.architectures,
+            )
 
         self.make_empty_intermediate_tensors = (
             self.language_model.make_empty_intermediate_tensors
         )
 
-    def get_language_model(self) -> torch.nn.Module:
-        return self.language_model
-
     def _parse_and_validate_image_input(
         self, **kwargs: object
     ) -> LFM2VLImageInputs | None:
@@ -714,8 +713,7 @@ class Lfm2VLForConditionalGeneration(
         self,
         hidden_states: torch.Tensor,
     ) -> torch.Tensor | None:
-        logits = self.language_model.compute_logits(hidden_states)
-        return logits
+        return self.language_model.compute_logits(hidden_states)
 
     def load_weights(self, weights: Iterable[tuple[str, torch.Tensor]]) -> set[str]:
         loader = AutoWeightsLoader(self)

vllm/model_executor/models/llava_next.py

@@ -268,27 +268,30 @@ class LlavaNextForConditionalGeneration(nn.Module, SupportsMultiModal, SupportsP
         self.config = config
         self.multimodal_config = multimodal_config
 
-        # TODO: Optionally initializes this for supporting embeddings.
-        self.vision_tower = init_vision_tower_for_llava(
-            config,
-            quant_config=quant_config,
-            multimodal_config=multimodal_config,
-            require_post_norm=False,
-            prefix=maybe_prefix(prefix, "vision_tower"),
-        )
-        self.image_newline = nn.Parameter(torch.empty(config.text_config.hidden_size))
-        self.multi_modal_projector = LlavaMultiModalProjector(
-            vision_hidden_size=vision_hidden_size,
-            text_hidden_size=config.text_config.hidden_size,
-            projector_hidden_act=config.projector_hidden_act,
-            multimodal_projector_bias=config.multimodal_projector_bias,
-        )
+        with self._mark_tower_model(vllm_config, "image"):
+            self.vision_tower = init_vision_tower_for_llava(
+                config,
+                quant_config=quant_config,
+                multimodal_config=multimodal_config,
+                require_post_norm=False,
+                prefix=maybe_prefix(prefix, "vision_tower"),
+            )
+            self.image_newline = nn.Parameter(
+                torch.empty(config.text_config.hidden_size)
+            )
+            self.multi_modal_projector = LlavaMultiModalProjector(
+                vision_hidden_size=vision_hidden_size,
+                text_hidden_size=config.text_config.hidden_size,
+                projector_hidden_act=config.projector_hidden_act,
+                multimodal_projector_bias=config.multimodal_projector_bias,
+            )
 
-        self.language_model = init_vllm_registered_model(
-            vllm_config=vllm_config,
-            hf_config=config.text_config,
-            prefix=maybe_prefix(prefix, "language_model"),
-        )
+        with self._mark_language_model(vllm_config):
+            self.language_model = init_vllm_registered_model(
+                vllm_config=vllm_config,
+                hf_config=config.text_config,
+                prefix=maybe_prefix(prefix, "language_model"),
+            )
 
         self.make_empty_intermediate_tensors = (
             self.language_model.make_empty_intermediate_tensors
@@ -427,8 +430,6 @@ class LlavaNextForConditionalGeneration(nn.Module, SupportsMultiModal, SupportsP
         self,
         inputs: LlavaNextImagePixelInputs,
     ) -> torch.Tensor | tuple[torch.Tensor, ...]:
-        assert self.vision_tower is not None
-
         pixel_values = inputs["pixel_values"]
 
         if isinstance(pixel_values, torch.Tensor):
@@ -480,9 +481,6 @@ class LlavaNextForConditionalGeneration(nn.Module, SupportsMultiModal, SupportsP
             for i, patch_features_batch in enumerate(patch_embeddings)
         ]
 
-    def get_language_model(self) -> torch.nn.Module:
-        return self.language_model
-
     def embed_multimodal(self, **kwargs: object) -> MultiModalEmbeddings:
         image_input = self._parse_and_validate_image_input(**kwargs)
         if image_input is None:

vllm/model_executor/models/llava_next_video.py

@@ -312,12 +312,10 @@ class LlavaNextVideoForConditionalGeneration(nn.Module, SupportsMultiModal, Supp
 
     @classmethod
     def get_placeholder_str(cls, modality: str, i: int) -> str | None:
-        if modality.startswith("image"):
-            return "<image>"
         if modality.startswith("video"):
             return "<video>"
 
-        raise ValueError("Only image or video modality is supported")
+        raise ValueError("Only video modality is supported")
 
     def __init__(self, *, vllm_config: VllmConfig, prefix: str = "") -> None:
         super().__init__()
@@ -329,26 +327,29 @@ class LlavaNextVideoForConditionalGeneration(nn.Module, SupportsMultiModal, Supp
         self.config = config
         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=quant_config,
-            multimodal_config=multimodal_config,
-            require_post_norm=False,
-            prefix=maybe_prefix(prefix, "vision_tower"),
-        )
-        self.vision_resampler = LlavaNextVideoPooler(config)
-        self.multi_modal_projector = LlavaNextMultiModalProjector(
-            vision_hidden_size=config.vision_config.hidden_size,
-            text_hidden_size=config.text_config.hidden_size,
-            projector_hidden_act=config.projector_hidden_act,
-            multimodal_projector_bias=config.multimodal_projector_bias,
-        )
-        self.language_model = init_vllm_registered_model(
-            vllm_config=vllm_config,
-            hf_config=config.text_config,
-            prefix=maybe_prefix(prefix, "language_model"),
-        )
+        with self._mark_tower_model(vllm_config, "video"):
+            # Initialize the vision tower only up to the required feature layer
+            self.vision_tower = init_vision_tower_for_llava(
+                config,
+                quant_config=quant_config,
+                multimodal_config=multimodal_config,
+                require_post_norm=False,
+                prefix=maybe_prefix(prefix, "vision_tower"),
+            )
+            self.vision_resampler = LlavaNextVideoPooler(config)
+            self.multi_modal_projector = LlavaNextMultiModalProjector(
+                vision_hidden_size=config.vision_config.hidden_size,
+                text_hidden_size=config.text_config.hidden_size,
+                projector_hidden_act=config.projector_hidden_act,
+                multimodal_projector_bias=config.multimodal_projector_bias,
+            )
+
+        with self._mark_language_model(vllm_config):
+            self.language_model = init_vllm_registered_model(
+                vllm_config=vllm_config,
+                hf_config=config.text_config,
+                prefix=maybe_prefix(prefix, "language_model"),
+            )
 
         self.make_empty_intermediate_tensors = (
             self.language_model.model.make_empty_intermediate_tensors
@@ -395,8 +396,6 @@ class LlavaNextVideoForConditionalGeneration(nn.Module, SupportsMultiModal, Supp
         return image_features
 
     def _process_video_pixels(self, inputs: LlavaNextVideoPixelInputs):
-        assert self.vision_tower is not None
-
         video_pixels = inputs["pixel_values_videos"]
 
         if isinstance(video_pixels, torch.Tensor):
@@ -419,9 +418,6 @@ class LlavaNextVideoForConditionalGeneration(nn.Module, SupportsMultiModal, Supp
 
         return [e.flatten(0, 1) for e in embeds]
 
-    def get_language_model(self) -> torch.nn.Module:
-        return self.language_model
-
     def embed_multimodal(self, **kwargs: object) -> MultiModalEmbeddings:
         video_input = self._parse_and_validate_video_input(**kwargs)
         if video_input is None:

vllm/model_executor/models/llava_onevision.py

@@ -508,21 +508,26 @@ class LlavaOnevisionForConditionalGeneration(nn.Module, SupportsMultiModal, Supp
         self.config = config
         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=quant_config,
-            multimodal_config=multimodal_config,
-            require_post_norm=False,
-            prefix=maybe_prefix(prefix, "vision_tower"),
-        )
-        self.multi_modal_projector = LlavaOnevisionMultiModalProjector(config)
-        self.language_model = init_vllm_registered_model(
-            vllm_config=vllm_config,
-            hf_config=config.text_config,
-            prefix=maybe_prefix(prefix, "language_model"),
-        )
-        self.image_newline = nn.Parameter(torch.empty(config.text_config.hidden_size))
+        with self._mark_tower_model(vllm_config, {"image", "video"}):
+            # Initialize the vision tower only up to the required feature layer
+            self.vision_tower = init_vision_tower_for_llava(
+                config,
+                quant_config=quant_config,
+                multimodal_config=multimodal_config,
+                require_post_norm=False,
+                prefix=maybe_prefix(prefix, "vision_tower"),
+            )
+            self.image_newline = nn.Parameter(
+                torch.empty(config.text_config.hidden_size)
+            )
+            self.multi_modal_projector = LlavaOnevisionMultiModalProjector(config)
+
+        with self._mark_language_model(vllm_config):
+            self.language_model = init_vllm_registered_model(
+                vllm_config=vllm_config,
+                hf_config=config.text_config,
+                prefix=maybe_prefix(prefix, "language_model"),
+            )
 
         self.make_empty_intermediate_tensors = (
             self.language_model.model.make_empty_intermediate_tensors
@@ -726,8 +731,6 @@ class LlavaOnevisionForConditionalGeneration(nn.Module, SupportsMultiModal, Supp
         self,
         inputs: LlavaOnevisionImagePixelInputs,
     ) -> torch.Tensor | list[torch.Tensor]:
-        assert self.vision_tower is not None
-
         pixel_values = inputs["pixel_values"]
 
         if isinstance(pixel_values, torch.Tensor):
@@ -801,8 +804,6 @@ class LlavaOnevisionForConditionalGeneration(nn.Module, SupportsMultiModal, Supp
         return video_features
 
     def _process_video_pixels(self, inputs: LlavaOnevisionVideoPixelInputs):
-        assert self.vision_tower is not None
-
         video_pixels = inputs["pixel_values_videos"]
 
         if isinstance(video_pixels, torch.Tensor):
@@ -862,9 +863,6 @@ class LlavaOnevisionForConditionalGeneration(nn.Module, SupportsMultiModal, Supp
         image_feature = image_feature.view(batch_frames, -1, dim)
         return image_feature
 
-    def get_language_model(self) -> torch.nn.Module:
-        return self.language_model
-
     def embed_multimodal(self, **kwargs: object) -> MultiModalEmbeddings:
         mm_input_by_modality = self._parse_and_validate_multimodal_inputs(**kwargs)
         if not mm_input_by_modality: