[P/D] NIXL Updates (#25844)

Signed-off-by: Sage Moore <sage@neuralmagic.com>
Signed-off-by: simon-mo <simon.mo@hey.com>
Signed-off-by: rentianyue-jk <rentianyue-jk@360shuke.com>
Signed-off-by: Russell Bryant <rbryant@redhat.com>
Signed-off-by: Isotr0py <mozf@mail2.sysu.edu.cn>
Signed-off-by: Chenheli Hua <huachenheli@outlook.com>
Signed-off-by: mgoin <mgoin64@gmail.com>
Signed-off-by: Tyler Michael Smith <tlrmchlsmth@gmail.com>
Signed-off-by: NickLucche <nlucches@redhat.com>
Signed-off-by: Roger Wang <hey@rogerw.io>
Signed-off-by: Robert Shaw <robshaw@redhat.com>
Co-authored-by: Sage Moore <sage@neuralmagic.com>
Co-authored-by: Russell Bryant <rbryant@redhat.com>
Co-authored-by: rentianyue-jk <rentianyue-jk@360shuke.com>
Co-authored-by: Isotr0py <mozf@mail2.sysu.edu.cn>
Co-authored-by: Chenheli Hua <huachenheli@outlook.com>
Co-authored-by: Wentao Ye <44945378+yewentao256@users.noreply.github.com>
Co-authored-by: Michael Goin <mgoin64@gmail.com>
Co-authored-by: Tyler Michael Smith <tlrmchlsmth@gmail.com>
Co-authored-by: Nicolò Lucchesi <nlucches@redhat.com>
Co-authored-by: Roger Wang <hey@rogerw.io>
Co-authored-by: Robert Shaw <robshaw@redhat.com>
Signed-off-by: simon-mo <simon.mo@hey.com>

.buildkite/release-pipeline.yaml

@@ -76,7 +76,7 @@ steps:
       queue: arm64_cpu_queue_postmerge
     commands:
       - "aws ecr-public get-login-password --region us-east-1 | docker login --username AWS --password-stdin public.ecr.aws/q9t5s3a7"
-      - "DOCKER_BUILDKIT=1 docker build --build-arg max_jobs=16 --build-arg USE_SCCACHE=1 --build-arg GIT_REPO_CHECK=1 --build-arg CUDA_VERSION=12.9.1 --build-arg torch_cuda_arch_list='8.7 9.0 10.0+PTX 12.0' --build-arg INSTALL_KV_CONNECTORS=true --tag public.ecr.aws/q9t5s3a7/vllm-release-repo:$BUILDKITE_COMMIT-$(uname -m) --target vllm-openai --progress plain -f docker/Dockerfile ."
+      - "DOCKER_BUILDKIT=1 docker build --build-arg max_jobs=16 --build-arg USE_SCCACHE=1 --build-arg GIT_REPO_CHECK=1 --build-arg CUDA_VERSION=12.9.1 --build-arg FLASHINFER_AOT_COMPILE=true --build-arg torch_cuda_arch_list='8.7 9.0 10.0+PTX 12.0' --build-arg INSTALL_KV_CONNECTORS=true --tag public.ecr.aws/q9t5s3a7/vllm-release-repo:$BUILDKITE_COMMIT-$(uname -m) --target vllm-openai --progress plain -f docker/Dockerfile ."
       - "docker push public.ecr.aws/q9t5s3a7/vllm-release-repo:$BUILDKITE_COMMIT-$(uname -m)"
 
   # Add job to create multi-arch manifest

docker/Dockerfile

@@ -404,6 +404,9 @@ RUN --mount=type=cache,target=/root/.cache/uv bash - <<'BASH'
                 FI_TORCH_CUDA_ARCH_LIST="7.5 8.0 8.9 9.0a 10.0a 12.0"
             fi
             echo "🏗️  Installing FlashInfer with AOT compilation for arches: ${FI_TORCH_CUDA_ARCH_LIST}"
+            export FLASHINFER_CUDA_ARCH_LIST="${FI_TORCH_CUDA_ARCH_LIST}"
+            # HACK: We need these to run flashinfer.aot before installing flashinfer, get from the package in the future
+            uv pip install --system cuda-python==$(echo $CUDA_VERSION | cut -d. -f1,2) pynvml==$(echo $CUDA_VERSION | cut -d. -f1) nvidia-nvshmem-cu$(echo $CUDA_VERSION | cut -d. -f1)
             # Build AOT kernels
             TORCH_CUDA_ARCH_LIST="${FI_TORCH_CUDA_ARCH_LIST}" \
                 python3 -m flashinfer.aot

docs/features/multimodal_inputs.md

@@ -6,6 +6,10 @@ This page teaches you how to pass multi-modal inputs to [multi-modal models][sup
     We are actively iterating on multi-modal support. See [this RFC](gh-issue:4194) for upcoming changes,
     and [open an issue on GitHub](https://github.com/vllm-project/vllm/issues/new/choose) if you have any feedback or feature requests.
 
+!!! tip
+    When serving multi-modal models, consider setting `--allowed-media-domains` to restrict domain that vLLM can access to prevent it from accessing arbitrary endpoints that can potentially be vulnerable to Server-Side Request Forgery (SSRF) attacks. You can provide a list of domains for this arg. For example: `--allowed-media-domains upload.wikimedia.org github.com www.bogotobogo.com`
+    This restriction is especially important if you run vLLM in a containerized environment where the vLLM pods may have unrestricted access to internal networks.
+
 ## Offline Inference
 
 To input multi-modal data, follow this schema in [vllm.inputs.PromptType][]:

docs/usage/security.md

@@ -60,6 +60,12 @@ Key points from the PyTorch security guide:
 - Implement proper authentication and authorization for management interfaces
 - Follow the principle of least privilege for all system components
 
+### 4. **Restrict Domains Access for Media URLs:**
+
+Restrict domains that vLLM can access for media URLs by setting
+`--allowed-media-domains` to prevent Server-Side Request Forgery (SSRF) attacks.
+(e.g. `--allowed-media-domains upload.wikimedia.org github.com www.bogotobogo.com`)
+
 ## Security and Firewalls: Protecting Exposed vLLM Systems
 
 While vLLM is designed to allow unsafe network services to be isolated to

tests/entrypoints/openai/test_lora_resolvers.py

@@ -45,6 +45,7 @@ class MockModelConfig:
     logits_processor_pattern: Optional[str] = None
     diff_sampling_param: Optional[dict] = None
     allowed_local_media_path: str = ""
+    allowed_media_domains: Optional[list[str]] = None
     encoder_config = None
     generation_config: str = "auto"
     skip_tokenizer_init: bool = False

tests/entrypoints/openai/test_serving_chat.py

@@ -240,6 +240,7 @@ class MockModelConfig:
     logits_processor_pattern = None
     diff_sampling_param: Optional[dict] = None
     allowed_local_media_path: str = ""
+    allowed_media_domains: Optional[list[str]] = None
     encoder_config = None
     generation_config: str = "auto"
     media_io_kwargs: dict[str, dict[str, Any]] = field(default_factory=dict)

tests/entrypoints/test_chat_utils.py

@@ -19,6 +19,7 @@ from vllm.entrypoints.chat_utils import (_try_extract_ast, load_chat_template,
                                          parse_chat_messages,
                                          parse_chat_messages_futures,
                                          resolve_chat_template_content_format,
+                                         resolve_chat_template_kwargs,
                                          resolve_hf_chat_template)
 from vllm.multimodal import MultiModalDataDict, MultiModalUUIDDict
 from vllm.multimodal.utils import (encode_audio_base64, encode_image_base64,
@@ -37,6 +38,7 @@ QWEN2AUDIO_MODEL_ID = "Qwen/Qwen2-Audio-7B-Instruct"
 QWEN2VL_MODEL_ID = "Qwen/Qwen2-VL-2B-Instruct"
 QWEN25VL_MODEL_ID = "Qwen/Qwen2.5-VL-3B-Instruct"
 QWEN25OMNI_MODEL_ID = "Qwen/Qwen2.5-Omni-7B"
+QWEN3_MODEL_ID = "Qwen/Qwen3-8B"
 LLAMA_GUARD_MODEL_ID = "meta-llama/Llama-Guard-3-1B"
 HERMES_MODEL_ID = "NousResearch/Hermes-3-Llama-3.1-8B"
 MISTRAL_MODEL_ID = "mistralai/Mistral-Small-3.1-24B-Instruct-2503"
@@ -2255,6 +2257,89 @@ def test_resolve_hf_chat_template(sample_json_schema, model, use_tools):
     assert isinstance(chat_template, str)
 
 
+@pytest.mark.parametrize(
+    "model, expected_kwargs",
+    [
+        (
+            QWEN2VL_MODEL_ID,
+            {
+                "add_vision_id", "add_generation_prompt",
+                "continue_final_message", "tools"
+            },
+        ),
+        (
+            QWEN3_MODEL_ID,
+            {
+                "enable_thinking", "add_generation_prompt",
+                "continue_final_message", "tools"
+            },
+        ),
+    ],
+)
+def test_resolve_hf_chat_template_kwargs(sample_json_schema, model,
+                                         expected_kwargs):
+    """checks that chat_template is a dict type for HF models."""
+    model_info = HF_EXAMPLE_MODELS.find_hf_info(model)
+    model_info.check_available_online(on_fail="skip")
+
+    tools = ([{
+        "type": "function",
+        "function": {
+            "name": "dummy_function_name",
+            "description": "This is a dummy function",
+            "parameters": sample_json_schema,
+        },
+    }])
+
+    chat_template_kwargs = {
+        # both unused
+        "unsed_kwargs_1": 123,
+        "unsed_kwargs_2": "abc",
+        # should not appear
+        "chat_template": "{% Hello world! %}",
+        # used by tokenizer
+        "continue_final_message": True,
+        "tools": tools,
+        # both used by Qwen2-VL and Qwen3
+        "add_generation_prompt": True,
+        # only used by Qwen2-VL
+        "add_vision_id": True,
+        # only used by Qwen3
+        "enable_thinking": True,
+    }
+
+    model_config = ModelConfig(
+        model,
+        tokenizer=model_info.tokenizer or model,
+        tokenizer_mode=model_info.tokenizer_mode,
+        revision=model_info.revision,
+        trust_remote_code=model_info.trust_remote_code,
+        hf_overrides=model_info.hf_overrides,
+        skip_tokenizer_init=model_info.skip_tokenizer_init,
+        enforce_eager=model_info.enforce_eager,
+        dtype=model_info.dtype)
+
+    # Build the tokenizer
+    tokenizer = get_tokenizer(
+        model,
+        trust_remote_code=model_config.trust_remote_code,
+    )
+
+    # Test detecting the tokenizer's chat_template
+    chat_template = resolve_hf_chat_template(
+        tokenizer,
+        chat_template=None,
+        tools=tools,
+        model_config=model_config,
+    )
+    resolved_chat_template_kwargs = resolve_chat_template_kwargs(
+        tokenizer,
+        chat_template=chat_template,
+        chat_template_kwargs=chat_template_kwargs,
+    )
+    assert set(resolved_chat_template_kwargs.keys()) == expected_kwargs
+
+
 # NOTE: Qwen2-Audio default chat template is specially defined inside
 # processor class instead of using `tokenizer_config.json`
 # yapf: disable

tests/multimodal/test_utils.py

@@ -66,7 +66,12 @@ async def test_fetch_image_http(image_url: str):
 @pytest.mark.parametrize("suffix", get_supported_suffixes())
 async def test_fetch_image_base64(url_images: dict[str, Image.Image],
                                   raw_image_url: str, suffix: str):
-    connector = MediaConnector()
+    connector = MediaConnector(
+        # Domain restriction should not apply to data URLs.
+        allowed_media_domains=[
+            "www.bogotobogo.com",
+            "github.com",
+        ])
     url_image = url_images[raw_image_url]
 
     try:
@@ -387,3 +392,29 @@ def test_argsort_mm_positions(case):
     modality_idxs = argsort_mm_positions(mm_positions)
 
     assert modality_idxs == expected_modality_idxs
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("video_url", TEST_VIDEO_URLS)
+@pytest.mark.parametrize("num_frames", [-1, 32, 1800])
+async def test_allowed_media_domains(video_url: str, num_frames: int):
+    connector = MediaConnector(
+        media_io_kwargs={"video": {
+            "num_frames": num_frames,
+        }},
+        allowed_media_domains=[
+            "www.bogotobogo.com",
+            "github.com",
+        ])
+
+    video_sync, metadata_sync = connector.fetch_video(video_url)
+    video_async, metadata_async = await connector.fetch_video_async(video_url)
+    assert np.array_equal(video_sync, video_async)
+    assert metadata_sync == metadata_async
+
+    disallowed_url = "https://upload.wikimedia.org/wikipedia/commons/4/47/PNG_transparency_demonstration_1.png"
+    with pytest.raises(ValueError):
+        _, _ = connector.fetch_video(disallowed_url)
+
+    with pytest.raises(ValueError):
+        _, _ = await connector.fetch_video_async(disallowed_url)

vllm/config/model.py

@@ -137,6 +137,9 @@ class ModelConfig:
     """Allowing API requests to read local images or videos from directories
     specified by the server file system. This is a security risk. Should only
     be enabled in trusted environments."""
+    allowed_media_domains: Optional[list[str]] = None
+    """If set, only media URLs that belong to this domain can be used for 
+    multi-modal inputs. """
     revision: Optional[str] = None
     """The specific model version to use. It can be a branch name, a tag name,
     or a commit id. If unspecified, will use the default version."""

vllm/config/parallel.py

@@ -279,6 +279,24 @@ class ParallelConfig:
         assert last_exc is not None
         raise last_exc
 
+    # The all_reduce at the end of attention (during o_proj) means that
+    # inputs are replicated across each rank of the tensor parallel group.
+    # If using expert-parallelism with DeepEP All2All ops, replicated
+    # tokens results in useless duplicate computation and communication.
+    #
+    # In this case, ensure the input to the experts is sequence parallel
+    # to avoid the excess work.
+    #
+    # Not needed for pplx-kernels as it can handle duplicate input tokens.
+    @property
+    def use_sequence_parallel_moe(self) -> bool:
+        return (envs.VLLM_ALL2ALL_BACKEND
+                in ("allgather_reducescatter", "naive",
+                    "deepep_high_throughput", "deepep_low_latency")
+                and self.enable_expert_parallel
+                and self.tensor_parallel_size > 1
+                and self.data_parallel_size > 1)
+
     @staticmethod
     def has_unfinished_dp(dp_group: ProcessGroup,
                           has_unfinished: bool) -> bool:

vllm/config/speculative.py

@@ -281,6 +281,8 @@ class SpeculativeConfig:
                     trust_remote_code,
                     allowed_local_media_path=self.target_model_config.
                     allowed_local_media_path,
+                    allowed_media_domains=self.target_model_config.
+                    allowed_media_domains,
                     dtype=self.target_model_config.dtype,
                     seed=self.target_model_config.seed,
                     revision=self.revision,

vllm/distributed/device_communicators/all2all.py

@@ -6,7 +6,7 @@ import torch
 import torch.distributed as dist
 
 import vllm.envs as envs
-from vllm.distributed import get_dp_group
+from vllm.distributed import get_dp_group, get_ep_group
 from vllm.forward_context import get_forward_context
 from vllm.logger import init_logger
 from vllm.utils import has_deep_ep, has_pplx
@@ -34,41 +34,60 @@ class NaiveAll2AllManager(All2AllManagerBase):
         super().__init__(cpu_group)
 
     def naive_multicast(self, x: torch.Tensor,
-                        cu_tokens_across_dp_cpu: torch.Tensor):
+                        cu_tokens_across_sp_cpu: torch.Tensor,
+                        is_sequence_parallel: bool) -> torch.Tensor:
         assert (len(x.shape) == 2)
-        buffer = torch.empty((cu_tokens_across_dp_cpu[-1], x.size(1)),
+        buffer = torch.empty((cu_tokens_across_sp_cpu[-1], x.size(1)),
                              device=x.device,
                              dtype=x.dtype)
 
-        start = 0 if self.dp_rank == 0 else cu_tokens_across_dp_cpu[
+        rank = self.rank if is_sequence_parallel else self.dp_rank
-            self.dp_rank - 1]
+        world_size = (self.world_size
-        end = cu_tokens_across_dp_cpu[self.dp_rank]
+                      if is_sequence_parallel else self.dp_world_size)
+
+        start = 0 if rank == 0 else cu_tokens_across_sp_cpu[rank - 1]
+        end = cu_tokens_across_sp_cpu[rank]
         buffer[start:end, :].copy_(x)
-        for idx in range(self.dp_world_size):
+        for idx in range(world_size):
-            start = 0 if idx == 0 else cu_tokens_across_dp_cpu[idx - 1]
+            start = 0 if idx == 0 else cu_tokens_across_sp_cpu[idx - 1]
-            end = cu_tokens_across_dp_cpu[idx]
+            end = cu_tokens_across_sp_cpu[idx]
-            self.dp_group.broadcast(buffer[start:end, :], idx)
+            get_ep_group().broadcast(buffer[start:end, :], idx)
 
         return buffer
 
-    def dispatch(self, hidden_states: torch.Tensor,
+    def dispatch(
-                 router_logits: torch.Tensor):
+        self,
-        sizes = get_forward_context(
+        hidden_states: torch.Tensor,
-        ).dp_metadata.get_chunk_sizes_across_dp_rank()
+        router_logits: torch.Tensor,
-        hidden_states, router_logits = get_dp_group().all_gatherv(
+        is_sequence_parallel: bool = False
-            [hidden_states, router_logits],
+    ) -> tuple[torch.Tensor, torch.Tensor]:
-            dim=0,
+        sp_size = self.tp_group.world_size if is_sequence_parallel else 1
-            sizes=sizes,
+        dp_metadata = get_forward_context().dp_metadata
-        )
+        cu_tokens_across_sp_cpu = dp_metadata.cu_tokens_across_sp(sp_size)
 
+        hidden_states = self.naive_multicast(hidden_states,
+                                             cu_tokens_across_sp_cpu,
+                                             is_sequence_parallel)
+        router_logits = self.naive_multicast(router_logits,
+                                             cu_tokens_across_sp_cpu,
+                                             is_sequence_parallel)
         return hidden_states, router_logits
 
-    def combine(self, hidden_states: torch.Tensor) -> torch.Tensor:
+    def combine(self,
-        sizes = get_forward_context(
+                hidden_states: torch.Tensor,
-        ).dp_metadata.get_chunk_sizes_across_dp_rank()
+                is_sequence_parallel: bool = False) -> torch.Tensor:
-        hidden_states = get_dp_group().reduce_scatterv(hidden_states,
+
-                                                       dim=0,
+        ep_rank = self.rank if is_sequence_parallel else self.dp_rank
-                                                       sizes=sizes)
+
+        dp_metadata = get_forward_context().dp_metadata
+        sp_size = self.tp_group.world_size if is_sequence_parallel else 1
+        cu_tokens_across_sp_cpu = dp_metadata.cu_tokens_across_sp(sp_size)
+
+        start = 0 if ep_rank == 0 else cu_tokens_across_sp_cpu[ep_rank - 1]
+        end = cu_tokens_across_sp_cpu[ep_rank]
+
+        all_hidden_states = get_ep_group().all_reduce(hidden_states)
+        hidden_states = all_hidden_states[start:end, :]
         return hidden_states
 
     def destroy(self):
@@ -84,29 +103,40 @@ class AgRsAll2AllManager(All2AllManagerBase):
     def __init__(self, cpu_group):
         super().__init__(cpu_group)
 
-    def dispatch(self, hidden_states: torch.Tensor,
+    def dispatch(
-                 router_logits: torch.Tensor):
+        self,
+        hidden_states: torch.Tensor,
+        router_logits: torch.Tensor,
+        is_sequence_parallel: bool = False
+    ) -> tuple[torch.Tensor, torch.Tensor]:
         """
         Gather hidden_states and router_logits from all dp ranks.
         """
         sizes = get_forward_context(
         ).dp_metadata.get_chunk_sizes_across_dp_rank()
-        hidden_states, router_logits = get_dp_group().all_gatherv(
+
+        dist_group = get_ep_group() if is_sequence_parallel else get_dp_group()
+        assert sizes[dist_group.rank_in_group] == hidden_states.shape[0]
+        hidden_states, router_logits = dist_group.all_gatherv(
             [hidden_states, router_logits],
             dim=0,
             sizes=sizes,
         )
         return hidden_states, router_logits
 
-    def combine(self, hidden_states: torch.Tensor) -> torch.Tensor:
+    def combine(self,
+                hidden_states: torch.Tensor,
+                is_sequence_parallel: bool = False) -> torch.Tensor:
         """
         Reduce-scatter hidden_states across all dp ranks.
         """
         sizes = get_forward_context(
         ).dp_metadata.get_chunk_sizes_across_dp_rank()
-        hidden_states = get_dp_group().reduce_scatterv(hidden_states,
+
-                                                       dim=0,
+        dist_group = get_ep_group() if is_sequence_parallel else get_dp_group()
-                                                       sizes=sizes)
+        hidden_states = dist_group.reduce_scatterv(hidden_states,
+                                                   dim=0,
+                                                   sizes=sizes)
         return hidden_states
 
     def destroy(self):
@@ -148,11 +178,17 @@ class PPLXAll2AllManager(All2AllManagerBase):
             kwargs, pplx.AllToAll.internode
             if self.internode else pplx.AllToAll.intranode)
 
-    def dispatch(self, hidden_states: torch.Tensor,
+    def dispatch(
-                 router_logits: torch.Tensor):
+        self,
+        hidden_states: torch.Tensor,
+        router_logits: torch.Tensor,
+        is_sequence_parallel: bool = False
+    ) -> tuple[torch.Tensor, torch.Tensor]:
         raise NotImplementedError
 
-    def combine(self, hidden_states: torch.Tensor) -> torch.Tensor:
+    def combine(self,
+                hidden_states: torch.Tensor,
+                is_sequence_parallel: bool = False) -> torch.Tensor:
         raise NotImplementedError
 
     def destroy(self):
@@ -184,11 +220,17 @@ class DeepEPAll2AllManagerBase(All2AllManagerBase):
     def get_handle(self, kwargs):
         raise NotImplementedError
 
-    def dispatch(self, hidden_states: torch.Tensor,
+    def dispatch(
-                 router_logits: torch.Tensor):
+        self,
+        hidden_states: torch.Tensor,
+        router_logits: torch.Tensor,
+        is_sequence_parallel: bool = False
+    ) -> tuple[torch.Tensor, torch.Tensor]:
         raise NotImplementedError
 
-    def combine(self, hidden_states: torch.Tensor) -> torch.Tensor:
+    def combine(self,
+                hidden_states: torch.Tensor,
+                is_sequence_parallel: bool = False) -> torch.Tensor:
         raise NotImplementedError
 
     def destroy(self):
@@ -395,4 +437,4 @@ class FlashInferAllToAllManager(All2AllManagerBase):
                 self.workspace_tensor = None
                 self.prepare_workspace_tensor = None
                 self.mapping = None
-                self.initialized = False
+                self.initialized = False

vllm/distributed/device_communicators/base_device_communicator.py

@@ -28,6 +28,8 @@ class Cache:
 
 
 class All2AllManagerBase:
+    rank: int
+    world_size: int
 
     def __init__(self, cpu_group):
         self.cpu_group = cpu_group
@@ -40,6 +42,7 @@ class All2AllManagerBase:
         # all2all lives in ep group, which is merged from dp and tp group
         self.dp_group = get_dp_group()
         self.tp_group = get_tp_group()
+
         # no self.ep_group since self.ep_group is still in construction
         # when we create this object
         self.dp_rank = self.dp_group.rank_in_group
@@ -60,17 +63,21 @@ class All2AllManagerBase:
         # and reuse it for the same config.
         raise NotImplementedError
 
+    def dispatch(self,
+                 hidden_states: torch.Tensor,
+                 router_logits: torch.Tensor,
+                 is_sequence_parallel: bool = False):
+        raise NotImplementedError
+
     def set_num_sms(self, num_sms: int):
         pass
 
     def max_sms_used(self) -> Optional[int]:
         return None  # None means it could use the whole GPU
 
-    def dispatch(self, hidden_states: torch.Tensor,
+    def combine(self,
-                 router_logits: torch.Tensor):
+                hidden_states: torch.Tensor,
-        raise NotImplementedError
+                is_sequence_parallel: bool = False):
-
-    def combine(self, hidden_states: torch.Tensor) -> torch.Tensor:
         raise NotImplementedError
 
     def destroy(self):
@@ -267,15 +274,20 @@ class DeviceCommunicatorBase:
             module.quant_method.init_prepare_finalize(module)
 
     def dispatch(
-            self, hidden_states: torch.Tensor,
+        self,
-            router_logits: torch.Tensor) -> tuple[torch.Tensor, torch.Tensor]:
+        hidden_states: torch.Tensor,
+        router_logits: torch.Tensor,
+        is_sequence_parallel: bool = False
+    ) -> tuple[torch.Tensor, torch.Tensor]:
         """
         Dispatch the hidden states and router logits to the appropriate device.
         This is a no-op in the base class.
         """
         return hidden_states, router_logits
 
-    def combine(self, hidden_states: torch.Tensor) -> torch.Tensor:
+    def combine(self,
+                hidden_states: torch.Tensor,
+                is_sequence_parallel: bool = False) -> torch.Tensor:
         """
         Combine the hidden states and router logits from the appropriate device.
         This is a no-op in the base class.

vllm/distributed/device_communicators/cuda_communicator.py

@@ -39,10 +39,6 @@ class CudaCommunicator(DeviceCommunicatorBase):
             use_custom_allreduce = _ENABLE_CUSTOM_ALL_REDUCE
             use_torch_symm_mem = envs.VLLM_ALLREDUCE_USE_SYMM_MEM
 
-        # ep does not use pynccl
-        use_pynccl = "ep" not in unique_name
-
-        self.use_pynccl = use_pynccl
         self.use_custom_allreduce = use_custom_allreduce
         self.use_torch_symm_mem = use_torch_symm_mem
 
@@ -57,7 +53,7 @@ class CudaCommunicator(DeviceCommunicatorBase):
             SymmMemCommunicator)
 
         self.pynccl_comm: Optional[PyNcclCommunicator] = None
-        if use_pynccl and self.world_size > 1:
+        if self.world_size > 1:
             self.pynccl_comm = PyNcclCommunicator(
                 group=self.cpu_group,
                 device=self.device,
@@ -308,14 +304,20 @@ class CudaCommunicator(DeviceCommunicatorBase):
         return output_list
 
     def dispatch(
-            self, hidden_states: torch.Tensor,
+        self,
-            router_logits: torch.Tensor) -> tuple[torch.Tensor, torch.Tensor]:
+        hidden_states: torch.Tensor,
+        router_logits: torch.Tensor,
+        is_sequence_parallel: bool = False
+    ) -> tuple[torch.Tensor, torch.Tensor]:
         assert self.all2all_manager is not None
         hidden_states, router_logits = self.all2all_manager.dispatch(
-            hidden_states, router_logits)
+            hidden_states, router_logits, is_sequence_parallel)
         return hidden_states, router_logits
 
-    def combine(self, hidden_states: torch.Tensor) -> torch.Tensor:
+    def combine(self,
+                hidden_states: torch.Tensor,
+                is_sequence_parallel: bool = False) -> torch.Tensor:
         assert self.all2all_manager is not None
-        hidden_states = self.all2all_manager.combine(hidden_states)
+        hidden_states = self.all2all_manager.combine(hidden_states,
+                                                     is_sequence_parallel)
         return hidden_states

vllm/distributed/device_communicators/xpu_communicator.py

@@ -75,14 +75,20 @@ class XpuCommunicator(DeviceCommunicatorBase):
         dist.broadcast(input_, src=src, group=self.device_group)
 
     def dispatch(
-            self, hidden_states: torch.Tensor,
+        self,
-            router_logits: torch.Tensor) -> tuple[torch.Tensor, torch.Tensor]:
+        hidden_states: torch.Tensor,
+        router_logits: torch.Tensor,
+        is_sequence_parallel: bool = False
+    ) -> tuple[torch.Tensor, torch.Tensor]:
         assert self.all2all_manager is not None
         hidden_states, router_logits = self.all2all_manager.dispatch(
-            hidden_states, router_logits)
+            hidden_states, router_logits, is_sequence_parallel)
         return hidden_states, router_logits
 
-    def combine(self, hidden_states: torch.Tensor) -> torch.Tensor:
+    def combine(self,
+                hidden_states: torch.Tensor,
+                is_sequence_parallel: bool = False) -> torch.Tensor:
         assert self.all2all_manager is not None
-        hidden_states = self.all2all_manager.combine(hidden_states)
+        hidden_states = self.all2all_manager.combine(hidden_states,
+                                                     is_sequence_parallel)
         return hidden_states

vllm/distributed/kv_transfer/kv_connector/v1/nixl_connector.py

@@ -105,6 +105,7 @@ class NixlConnectorMetadata(KVConnectorMetadata):
         self.reqs_to_recv: dict[ReqId, ReqMeta] = {}
         self.reqs_to_save: dict[ReqId, ReqMeta] = {}
         self.reqs_to_send: dict[ReqId, float] = {}
+        self.reqs_in_batch: set[ReqId] = set()
 
     def add_new_req(
         self,
@@ -278,6 +279,7 @@ class NixlConnectorScheduler:
         self._reqs_need_save: dict[ReqId, tuple[Request, list[int]]] = {}
         # Reqs to send and their expiration time
         self._reqs_need_send: dict[ReqId, float] = {}
+        self._reqs_in_batch: set[ReqId] = set()
 
     def get_num_new_matched_tokens(
             self, request: "Request",
@@ -324,6 +326,9 @@ class NixlConnectorScheduler:
 
         if not params:
             return
+
+        if params.get("do_remote_decode"):
+            self._reqs_in_batch.add(request.request_id)
         if self.use_host_buffer and params.get("do_remote_decode"):
             # NOTE: when accelerator is not directly supported by Nixl,
             # prefilled blocks need to be saved to host memory before transfer.
@@ -373,6 +378,8 @@ class NixlConnectorScheduler:
                 request_id=req_id,
                 local_block_ids=block_ids,
                 kv_transfer_params=req.kv_transfer_params,
+                load_remote_cache=True,
+                save_to_host=False,
             )
 
         for req_id, (req, block_ids) in self._reqs_need_save.items():
@@ -386,10 +393,12 @@ class NixlConnectorScheduler:
             )
 
         meta.reqs_to_send = self._reqs_need_send
+        meta.reqs_in_batch = self._reqs_in_batch
 
         # Clear the list once workers start the transfers
         self._reqs_need_recv.clear()
         self._reqs_need_save.clear()
+        self._reqs_in_batch = set()
         self._reqs_need_send = {}
 
         return meta
@@ -465,8 +474,11 @@ class NixlConnectorWorker:
                 "backends", ["UCX"])
         # Agent.
         non_ucx_backends = [b for b in self.nixl_backends if b != "UCX"]
-        config = nixl_agent_config(backends=self.nixl_backends) if len(
+        if nixl_agent_config is None:
-            non_ucx_backends) > 0 and nixl_agent_config is not None else None
+            config = None
+        else:
+            config = nixl_agent_config(backends=self.nixl_backends) if len(
+                non_ucx_backends) > 0 else nixl_agent_config(num_threads=8)
 
         self.nixl_wrapper = NixlWrapper(str(uuid.uuid4()), config)
         # Map of engine_id -> {rank0: agent_name0, rank1: agent_name1..}.
@@ -546,6 +558,8 @@ class NixlConnectorWorker:
         self._recving_transfers = defaultdict[ReqId, list[Transfer]](list)
         # Track the expiration time of requests that are waiting to be sent.
         self._reqs_to_send: dict[ReqId, float] = {}
+        # Set of requests that have been part of a batch, regardless of status.
+        self._reqs_to_process: set[ReqId] = set()
 
         # Background thread for handling new handshake requests.
         self._nixl_handshake_listener_t: Optional[threading.Thread] = None
@@ -1082,6 +1096,7 @@ class NixlConnectorWorker:
                 "Releasing expired KV blocks for request %s which were "
                 "retrieved by %d decode worker(s) within %d seconds.", req_id,
                 count, envs.VLLM_NIXL_ABORT_REQUEST_TIMEOUT)
+            self._reqs_to_process.remove(req_id)
             del self._reqs_to_send[req_id]
             done_sending.add(req_id)
 
@@ -1097,7 +1112,8 @@ class NixlConnectorWorker:
         for notifs in self.nixl_wrapper.get_new_notifs().values():
             for notif in notifs:
                 req_id, tp_ratio = notif.decode("utf-8").rsplit(":", 1)
-                if req_id not in self._reqs_to_send:
+                if (req_id not in self._reqs_to_send
+                        and req_id not in self._reqs_to_process):
                     logger.error(
                         "Potentially invalid KV blocks for "
                         "unrecognized request %s were retrieved by "
@@ -1110,7 +1126,8 @@ class NixlConnectorWorker:
                         tp_ratio):
                     notified_req_ids.add(req_id)
                     del self.consumer_notification_counts_by_req[req_id]
-                    del self._reqs_to_send[req_id]
+                    self._reqs_to_process.remove(req_id)
+                    self._reqs_to_send.pop(req_id, None)
         return notified_req_ids
 
     def _pop_done_transfers(
@@ -1171,8 +1188,19 @@ class NixlConnectorWorker:
         while not self._ready_requests.empty():
             self._read_blocks_for_req(*self._ready_requests.get_nowait())
 
+        # Keep around the requests that have been part of a batch. This is
+        # needed because async scheduling pushes the misalignment between the
+        # moment in which requests expiration is set (P side) and the moment in
+        # which blocks are read from D. As P can now more easily lag behind D
+        # while processing the next batch, we make sure to only set an
+        # expiration for requests that have not been read from D yet.
+        for req_id in metadata.reqs_in_batch:
+            self._reqs_to_process.add(req_id)
+
         # Add to requests that are waiting to be read and track expiration.
-        self._reqs_to_send.update(metadata.reqs_to_send)
+        for req_id, expiration_time in metadata.reqs_to_send.items():
+            if req_id in self._reqs_to_process:
+                self._reqs_to_send[req_id] = expiration_time
 
     def _read_blocks_for_req(self, req_id: str, meta: ReqMeta):
         logger.debug(

vllm/distributed/parallel_state.py

@@ -871,17 +871,24 @@ class GroupCoordinator:
                 model)
 
     def dispatch(
-            self, hidden_states: torch.Tensor,
+        self,
-            router_logits: torch.Tensor) -> tuple[torch.Tensor, torch.Tensor]:
+        hidden_states: torch.Tensor,
+        router_logits: torch.Tensor,
+        is_sequence_parallel: bool = False
+    ) -> tuple[torch.Tensor, torch.Tensor]:
         if self.device_communicator is not None:
             return self.device_communicator.dispatch(hidden_states,
-                                                     router_logits)
+                                                     router_logits,
+                                                     is_sequence_parallel)
         else:
             return hidden_states, router_logits
 
-    def combine(self, hidden_states) -> torch.Tensor:
+    def combine(self,
+                hidden_states,
+                is_sequence_parallel: bool = False) -> torch.Tensor:
         if self.device_communicator is not None:
-            return self.device_communicator.combine(hidden_states)
+            return self.device_communicator.combine(hidden_states,
+                                                    is_sequence_parallel)
         else:
             return hidden_states
 

vllm/engine/arg_utils.py

@@ -297,6 +297,8 @@ class EngineArgs:
     tokenizer_mode: TokenizerMode = ModelConfig.tokenizer_mode
     trust_remote_code: bool = ModelConfig.trust_remote_code
     allowed_local_media_path: str = ModelConfig.allowed_local_media_path
+    allowed_media_domains: Optional[
+        list[str]] = ModelConfig.allowed_media_domains
     download_dir: Optional[str] = LoadConfig.download_dir
     safetensors_load_strategy: str = LoadConfig.safetensors_load_strategy
     load_format: Union[str, LoadFormats] = LoadConfig.load_format
@@ -531,6 +533,8 @@ class EngineArgs:
                                  **model_kwargs["hf_config_path"])
         model_group.add_argument("--allowed-local-media-path",
                                  **model_kwargs["allowed_local_media_path"])
+        model_group.add_argument("--allowed-media-domains",
+                                 **model_kwargs["allowed_media_domains"])
         model_group.add_argument("--revision", **model_kwargs["revision"])
         model_group.add_argument("--code-revision",
                                  **model_kwargs["code_revision"])
@@ -997,6 +1001,7 @@ class EngineArgs:
             tokenizer_mode=self.tokenizer_mode,
             trust_remote_code=self.trust_remote_code,
             allowed_local_media_path=self.allowed_local_media_path,
+            allowed_media_domains=self.allowed_media_domains,
             dtype=self.dtype,
             seed=self.seed,
             revision=self.revision,

vllm/entrypoints/chat_utils.py

@@ -11,7 +11,12 @@ from pathlib import Path
 from typing import (Any, Callable, Generic, Literal, Optional, TypeVar, Union,
                     cast)
 
+import jinja2
+import jinja2.ext
+import jinja2.meta
 import jinja2.nodes
+import jinja2.parser
+import jinja2.sandbox
 import transformers.utils.chat_template_utils as hf_chat_utils
 # yapf conflicts with isort for this block
 # yapf: disable
@@ -50,7 +55,7 @@ from vllm.transformers_utils.chat_templates import (
 # yapf: enable
 from vllm.transformers_utils.processor import cached_get_processor
 from vllm.transformers_utils.tokenizer import AnyTokenizer, MistralTokenizer
-from vllm.utils import random_uuid
+from vllm.utils import random_uuid, supports_kw
 
 logger = init_logger(__name__)
 
@@ -632,6 +637,10 @@ class BaseMultiModalItemTracker(ABC, Generic[_T]):
     def allowed_local_media_path(self):
         return self._model_config.allowed_local_media_path
 
+    @property
+    def allowed_media_domains(self):
+        return self._model_config.allowed_media_domains
+
     @property
     def mm_registry(self):
         return MULTIMODAL_REGISTRY
@@ -832,6 +841,7 @@ class MultiModalContentParser(BaseMultiModalContentParser):
         self._connector = MediaConnector(
             media_io_kwargs=media_io_kwargs,
             allowed_local_media_path=tracker.allowed_local_media_path,
+            allowed_media_domains=tracker.allowed_media_domains,
         )
 
     def parse_image(
@@ -916,6 +926,7 @@ class AsyncMultiModalContentParser(BaseMultiModalContentParser):
         self._connector = MediaConnector(
             media_io_kwargs=media_io_kwargs,
             allowed_local_media_path=tracker.allowed_local_media_path,
+            allowed_media_domains=tracker.allowed_media_domains,
         )
 
     def parse_image(
@@ -1548,6 +1559,46 @@ def parse_chat_messages_futures(
     return conversation, mm_tracker.all_mm_data(), mm_tracker.all_mm_uuids()
 
 
+# adapted from https://github.com/huggingface/transformers/blob/v4.56.2/src/transformers/utils/chat_template_utils.py#L398-L412
+# only preserve the parse function used to resolve chat template kwargs
+class AssistantTracker(jinja2.ext.Extension):
+    tags = {"generation"}
+
+    def parse(self, parser: jinja2.parser.Parser) -> jinja2.nodes.CallBlock:
+        lineno = next(parser.stream).lineno
+        body = parser.parse_statements(["name:endgeneration"], drop_needle=True)
+        call = self.call_method("_generation_support")
+        call_block = jinja2.nodes.CallBlock(call, [], [], body)
+        return call_block.set_lineno(lineno)
+
+
+def resolve_chat_template_kwargs(
+    tokenizer: Union[PreTrainedTokenizer, PreTrainedTokenizerFast],
+    chat_template: str,
+    chat_template_kwargs: dict[str, Any],
+) -> dict[str, Any]:
+    fn_kw = {
+        k for k in chat_template_kwargs
+        if supports_kw(tokenizer.apply_chat_template, k, allow_var_kwargs=False)
+    }
+
+    env = jinja2.sandbox.ImmutableSandboxedEnvironment(
+        trim_blocks=True,
+        lstrip_blocks=True,
+        extensions=[AssistantTracker, jinja2.ext.loopcontrols],
+    )
+    parsed_content = env.parse(chat_template)
+    template_vars = jinja2.meta.find_undeclared_variables(parsed_content)
+
+    # We exclude chat_template from kwargs here, because
+    # chat template has been already resolved at this stage
+    unexpected_vars = {"chat_template"}
+    accept_vars = (fn_kw | template_vars) - unexpected_vars
+    return {
+        k: v for k, v in chat_template_kwargs.items() if k in accept_vars
+    }
+
+
 def apply_hf_chat_template(
     tokenizer: Union[PreTrainedTokenizer, PreTrainedTokenizerFast],
     conversation: list[ConversationMessage],
@@ -1573,12 +1624,17 @@ def apply_hf_chat_template(
         )
 
     try:
+        resolved_kwargs = resolve_chat_template_kwargs(
+            tokenizer=tokenizer,
+            chat_template=hf_chat_template,
+            chat_template_kwargs=kwargs,
+        )
         return tokenizer.apply_chat_template(
             conversation=conversation,  # type: ignore[arg-type]
             tools=tools,  # type: ignore[arg-type]
             chat_template=hf_chat_template,
             tokenize=tokenize,
-            **kwargs,
+            **resolved_kwargs,
         )
 
     # External library exceptions can sometimes occur despite the framework's

vllm/entrypoints/llm.py

@@ -86,6 +86,8 @@ class LLM:
             or videos from directories specified by the server file system.
             This is a security risk. Should only be enabled in trusted
             environments.
+        allowed_media_domains: If set, only media URLs that belong to this 
+            domain can be used for multi-modal inputs.
         tensor_parallel_size: The number of GPUs to use for distributed
             execution with tensor parallelism.
         dtype: The data type for the model weights and activations. Currently,
@@ -169,6 +171,7 @@ class LLM:
         skip_tokenizer_init: bool = False,
         trust_remote_code: bool = False,
         allowed_local_media_path: str = "",
+        allowed_media_domains: Optional[list[str]] = None,
         tensor_parallel_size: int = 1,
         dtype: ModelDType = "auto",
         quantization: Optional[QuantizationMethods] = None,
@@ -264,6 +267,7 @@ class LLM:
             skip_tokenizer_init=skip_tokenizer_init,
             trust_remote_code=trust_remote_code,
             allowed_local_media_path=allowed_local_media_path,
+            allowed_media_domains=allowed_media_domains,
             tensor_parallel_size=tensor_parallel_size,
             dtype=dtype,
             quantization=quantization,

vllm/entrypoints/openai/api_server.py

@@ -3,12 +3,14 @@
 
 import asyncio
 import gc
+import hashlib
 import importlib
 import inspect
 import json
 import multiprocessing
 import multiprocessing.forkserver as forkserver
 import os
+import secrets
 import signal
 import socket
 import tempfile
@@ -1252,7 +1254,7 @@ def load_log_config(log_config_file: Optional[str]) -> Optional[dict]:
 class AuthenticationMiddleware:
     """
     Pure ASGI middleware that authenticates each request by checking
-    if the Authorization header exists and equals "Bearer {api_key}".
+    if the Authorization Bearer token exists and equals anyof "{api_key}".
 
     Notes
     -----
@@ -1263,7 +1265,26 @@ class AuthenticationMiddleware:
 
     def __init__(self, app: ASGIApp, tokens: list[str]) -> None:
         self.app = app
-        self.api_tokens = {f"Bearer {token}" for token in tokens}
+        self.api_tokens = [
+            hashlib.sha256(t.encode("utf-8")).digest() for t in tokens
+        ]
+
+    def verify_token(self, headers: Headers) -> bool:
+        authorization_header_value = headers.get("Authorization")
+        if not authorization_header_value:
+            return False
+
+        scheme, _, param = authorization_header_value.partition(" ")
+        if scheme.lower() != "bearer":
+            return False
+
+        param_hash = hashlib.sha256(param.encode("utf-8")).digest()
+
+        token_match = False
+        for token_hash in self.api_tokens:
+            token_match |= secrets.compare_digest(param_hash, token_hash)
+
+        return token_match
 
     def __call__(self, scope: Scope, receive: Receive,
                  send: Send) -> Awaitable[None]:
@@ -1276,8 +1297,7 @@ class AuthenticationMiddleware:
         url_path = URL(scope=scope).path.removeprefix(root_path)
         headers = Headers(scope=scope)
         # Type narrow to satisfy mypy.
-        if url_path.startswith("/v1") and headers.get(
+        if url_path.startswith("/v1") and not self.verify_token(headers):
-                "Authorization") not in self.api_tokens:
             response = JSONResponse(content={"error": "Unauthorized"},
                                     status_code=401)
             return response(scope, receive, send)
@@ -1696,6 +1716,7 @@ async def init_app_state(
         request_logger=request_logger,
         chat_template=resolved_chat_template,
         chat_template_content_format=args.chat_template_content_format,
+        trust_request_chat_template=args.trust_request_chat_template,
         return_tokens_as_token_ids=args.return_tokens_as_token_ids,
         enable_auto_tools=args.enable_auto_tool_choice,
         exclude_tools_when_tool_choice_none=args.

vllm/entrypoints/openai/cli_args.py

@@ -103,9 +103,13 @@ class FrontendArgs:
     chat_template_content_format: ChatTemplateContentFormatOption = "auto"
     """The format to render message content within a chat template.
 
-* "string" will render the content as a string. Example: `"Hello World"`
+    * "string" will render the content as a string. Example: `"Hello World"`
-* "openai" will render the content as a list of dictionaries, similar to OpenAI
+    * "openai" will render the content as a list of dictionaries, similar to
-schema. Example: `[{"type": "text", "text": "Hello world!"}]`"""
+      OpenAI schema. Example: `[{"type": "text", "text": "Hello world!"}]`"""
+    trust_request_chat_template: bool = False
+    """Whether to trust the chat template provided in the request. If False,
+    the server will always use the chat template specified by `--chat-template`
+    or the ones from tokenizer."""
     response_role: str = "assistant"
     """The role name to return if `request.add_generation_prompt=true`."""
     ssl_keyfile: Optional[str] = None

vllm/entrypoints/openai/serving_chat.py

@@ -68,6 +68,7 @@ class OpenAIServingChat(OpenAIServing):
         request_logger: Optional[RequestLogger],
         chat_template: Optional[str],
         chat_template_content_format: ChatTemplateContentFormatOption,
+        trust_request_chat_template: bool = False,
         return_tokens_as_token_ids: bool = False,
         reasoning_parser: str = "",
         enable_auto_tools: bool = False,
@@ -89,6 +90,7 @@ class OpenAIServingChat(OpenAIServing):
         self.response_role = response_role
         self.chat_template = chat_template
         self.chat_template_content_format: Final = chat_template_content_format
+        self.trust_request_chat_template = trust_request_chat_template
         self.enable_log_outputs = enable_log_outputs
 
         # set up tool use
@@ -220,6 +222,16 @@ class OpenAIServingChat(OpenAIServing):
 
             if not self.use_harmony:
                 # Common case.
+                request_chat_template = request.chat_template
+                chat_template_kwargs = request.chat_template_kwargs
+                if not self.trust_request_chat_template and (
+                        request_chat_template is not None or
+                    (chat_template_kwargs and
+                     chat_template_kwargs.get("chat_template") is not None)):
+                    return self.create_error_response(
+                        "Chat template is passed with request, but "
+                        "--trust-request-chat-template is not set. "
+                        "Refused request with untrusted chat template.")
                 (
                     conversation,
                     request_prompts,
@@ -228,7 +240,7 @@ class OpenAIServingChat(OpenAIServing):
                     request,
                     tokenizer,
                     request.messages,
-                    chat_template=request.chat_template or self.chat_template,
+                    chat_template=request_chat_template or self.chat_template,
                     chat_template_content_format=self.
                     chat_template_content_format,
                     add_generation_prompt=request.add_generation_prompt,

vllm/forward_context.py

@@ -49,16 +49,29 @@ class BatchDescriptor(NamedTuple):
         return BatchDescriptor(self.num_tokens, uniform_decode=False)
 
 
-def _compute_chunked_local_num_tokens(num_tokens_across_dp_cpu: list[int],
+def _compute_sp_num_tokens(num_tokens_across_dp_cpu: torch.Tensor,
+                           sequence_parallel_size: int) -> list[int]:
+    sp_tokens = ((num_tokens_across_dp_cpu + sequence_parallel_size - 1) //
+                 sequence_parallel_size)
+
+    sp_tokens = sp_tokens.repeat_interleave(sequence_parallel_size)
+    return sp_tokens.tolist()
+
+
+def _compute_chunked_local_num_tokens(num_tokens_across_dp_cpu: torch.Tensor,
+                                      sequence_parallel_size: int,
                                       max_num_tokens: int,
                                       chunk_idx: int) -> list[int]:
-    dp_size = len(num_tokens_across_dp_cpu)
 
-    local_size = [-1] * dp_size
+    sp_tokens = _compute_sp_num_tokens(num_tokens_across_dp_cpu,
-    for i in range(dp_size):
+                                       sequence_parallel_size)
-        dp_tokens = num_tokens_across_dp_cpu[i]
+    sp_size = len(sp_tokens)
+
+    local_size = [-1] * sp_size
+    for i in range(sp_size):
+        # Take into account sharding if MoE activation is sequence parallel.
         local_size[i] = min(max_num_tokens,
-                            dp_tokens - (max_num_tokens * chunk_idx))
+                            sp_tokens[i] - (max_num_tokens * chunk_idx))
         if local_size[i] <= 0:
             local_size[i] = 1  # ensure lockstep even if done
     return local_size
@@ -67,7 +80,9 @@ def _compute_chunked_local_num_tokens(num_tokens_across_dp_cpu: list[int],
 @dataclass
 class DPMetadata:
     max_tokens_across_dp_cpu: torch.Tensor
-    cu_tokens_across_dp_cpu: torch.Tensor
+    num_tokens_across_dp_cpu: torch.Tensor
+
+    # NOTE: local_sizes should only be set by the chunked_sizes context manager
     local_sizes: Optional[list[int]] = None
 
     @staticmethod
@@ -98,6 +113,17 @@ class DPMetadata:
         dist.all_reduce(num_tokens_tensor, group=group)
         return num_tokens_tensor.cpu()
 
+    # Get the cumulative tokens across sequence parallel ranks.
+    # In this case the input to the MoEs will be distributed w.r.t both
+    # DP and TP rank.
+    # When sp_size==1, this is just the cummulative num tokens across DP.
+    def cu_tokens_across_sp(self, sp_size: int) -> torch.Tensor:
+        num_tokens_across_sp_cpu = (
+            (self.num_tokens_across_dp_cpu - 1 + sp_size) // sp_size)
+        num_tokens_across_sp_cpu = (
+            num_tokens_across_sp_cpu.repeat_interleave(sp_size))
+        return torch.cumsum(num_tokens_across_sp_cpu, dim=0)
+
     @staticmethod
     def should_ubatch_across_dp(
             should_ubatch: bool, orig_num_tokens_per_ubatch: int,
@@ -147,10 +173,10 @@ class DPMetadata:
 
     @staticmethod
     def make(
-            parallel_config: ParallelConfig,
+        parallel_config: ParallelConfig,
-            attn_metadata: Any,
+        attn_metadata: Any,
-            num_tokens: int,
+        num_tokens: int,
-            num_tokens_across_dp: Optional[torch.Tensor] = None
+        num_tokens_across_dp_cpu: Optional[torch.Tensor] = None
     ) -> "DPMetadata":
 
         assert parallel_config.data_parallel_size > 1
@@ -167,18 +193,18 @@ class DPMetadata:
 
         # If num_tokens_across_dp is None, it will be computed by all_reduce
         # Otherwise, num_tokens_across_dp[dp_rank] should be equal to batchsize
-        assert (num_tokens_across_dp is None or num_tokens_across_dp[dp_rank]
+        assert (num_tokens_across_dp_cpu is None
-                == batchsize), f"{num_tokens_across_dp[dp_rank]} {batchsize}"
+                or num_tokens_across_dp_cpu[dp_rank] == batchsize
-        if num_tokens_across_dp is None:
+                ), f"{num_tokens_across_dp_cpu[dp_rank]} {batchsize}"
-            num_tokens_across_dp = DPMetadata.num_tokens_across_dp(
+        if num_tokens_across_dp_cpu is None:
+            num_tokens_across_dp_cpu = DPMetadata.num_tokens_across_dp(
                 batchsize, dp_size, dp_rank)
-        max_tokens_across_dp_cpu = torch.max(num_tokens_across_dp)
+        max_tokens_across_dp_cpu = torch.max(num_tokens_across_dp_cpu)
-        cu_tokens_across_dp_cpu = torch.cumsum(num_tokens_across_dp, dim=0)
+        return DPMetadata(max_tokens_across_dp_cpu, num_tokens_across_dp_cpu)
-        return DPMetadata(max_tokens_across_dp_cpu, cu_tokens_across_dp_cpu,
-                          num_tokens_across_dp)
 
     @contextmanager
-    def chunked_sizes(self, max_chunk_size_per_rank: int, chunk_idx: int):
+    def chunked_sizes(self, sequence_parallel_size: int,
+                      max_chunk_size_per_rank: int, chunk_idx: int):
         """
         Context manager to compute and temporarily set the per-rank local token
         sizes for a specific chunk during chunked forward execution.
@@ -192,31 +218,40 @@ class DPMetadata:
         `chunk_idx`, this context manager sets `self.local_sizes` to the number
         of tokens to process in that chunk on each rank.
 
-        It uses cumulative sizes (`cu_tokens_across_dp_cpu`) to derive the
-        number of tokens per rank, and calls `_compute_chunked_local_num_tokens`
-        to determine the chunk-wise split.
-
         `self.local_sizes` is only valid inside the context.
 
         Args:
+            sequence_parallel_size: When Attn is TP and MoE layers are EP,
+                                    we use SP between the layers to avoid
+                                    redundant ops. We need this value to
+                                    compute the chunked sizes.
             max_chunk_size_per_rank: The max number of tokens each rank is 
                                      allowed to process in this chunk.
             chunk_idx: The index of the chunk to compute sizes for.
         """
-        cu_sizes = self.cu_tokens_across_dp_cpu
-        num_tokens_across_dp_cpu = [
-            (cu_sizes[i] -
-             cu_sizes[i - 1]).item() if i > 0 else cu_sizes[0].item()
-            for i in range(len(cu_sizes))
-        ]
         self.local_sizes = _compute_chunked_local_num_tokens(
-            num_tokens_across_dp_cpu, max_chunk_size_per_rank, chunk_idx)
+            self.num_tokens_across_dp_cpu, sequence_parallel_size,
+            max_chunk_size_per_rank, chunk_idx)
+        try:
+            yield self.local_sizes
+        finally:
+            self.local_sizes = None
+
+    @contextmanager
+    def sp_local_sizes(self, sequence_parallel_size: int):
+        """
+        Context mamager for setting self.local_sizes. Same as self.chunked_sizes
+        but without any chunking.
+        """
+        self.local_sizes = _compute_sp_num_tokens(
+            self.num_tokens_across_dp_cpu, sequence_parallel_size)
         try:
             yield self.local_sizes
         finally:
             self.local_sizes = None
 
     def get_chunk_sizes_across_dp_rank(self) -> Optional[list[int]]:
+        assert self.local_sizes is not None
         return self.local_sizes
 
 

vllm/model_executor/layers/fused_moe/layer.py

@@ -3,6 +3,7 @@
 
 from abc import abstractmethod
 from collections.abc import Iterable
+from contextlib import nullcontext
 from enum import Enum
 from typing import Callable, Literal, Optional, Union, get_args, overload
 
@@ -983,8 +984,7 @@ class FusedMoE(CustomOp):
                     if dp_size is not None else get_dp_group().world_size)
 
         self.is_sequence_parallel = is_sequence_parallel
-        if self.is_sequence_parallel:
+        self.sp_size = tp_size_ if is_sequence_parallel else 1
-            self.sp_size = tp_size_
 
         self.moe_parallel_config: FusedMoEParallelConfig = (
             FusedMoEParallelConfig.make(
@@ -1966,7 +1966,8 @@ class FusedMoE(CustomOp):
             # clamp start and end
             chunk_start = min(chunk_start, num_tokens - 1)
             chunk_end = min(chunk_end, num_tokens)
-            with ctx.dp_metadata.chunked_sizes(moe_dp_chunk_size_per_rank,
+            with ctx.dp_metadata.chunked_sizes(self.sp_size,
+                                               moe_dp_chunk_size_per_rank,
                                                chunk_idx):
                 process_chunk(chunk_start,
                               chunk_end,
@@ -2011,65 +2012,73 @@ class FusedMoE(CustomOp):
         else:
             shared_output = None
 
-        if do_naive_dispatch_combine:
+        ctx = get_forward_context()
-            hidden_states, router_logits = get_ep_group().dispatch(
+        sp_ctx = ctx.dp_metadata.sp_local_sizes(
-                hidden_states, router_logits)
+            self.sp_size) if ctx.dp_metadata else nullcontext()
 
-        # Matrix multiply.
+        with sp_ctx:
-        final_hidden_states = self.quant_method.apply(
+            if do_naive_dispatch_combine:
-            layer=self,
+                hidden_states, router_logits = get_ep_group().dispatch(
-            x=hidden_states,
+                    hidden_states, router_logits, self.is_sequence_parallel)
-            router_logits=router_logits,
-            top_k=self.top_k,
-            renormalize=self.renormalize,
-            use_grouped_topk=self.use_grouped_topk,
-            global_num_experts=self.global_num_experts,
-            expert_map=self.expert_map,
-            topk_group=self.topk_group,
-            num_expert_group=self.num_expert_group,
-            custom_routing_function=self.custom_routing_function,
-            scoring_func=self.scoring_func,
-            routed_scaling_factor=self.routed_scaling_factor,
-            e_score_correction_bias=self.e_score_correction_bias,
-            activation=self.activation,
-            apply_router_weight_on_input=self.apply_router_weight_on_input,
-            enable_eplb=self.enable_eplb,
-            expert_load_view=self.expert_load_view,
-            logical_to_physical_map=self.logical_to_physical_map,
-            logical_replica_count=self.logical_replica_count,
-        )
 
-        if shared_output is not None:
+            # Matrix multiply.
-            assert not isinstance(final_hidden_states, tuple)
+            final_hidden_states = self.quant_method.apply(
-            assert self.shared_experts is not None
+                layer=self,
-            final_hidden_states = (
+                x=hidden_states,
-                shared_output,
+                router_logits=router_logits,
-                final_hidden_states,
+                top_k=self.top_k,
+                renormalize=self.renormalize,
+                use_grouped_topk=self.use_grouped_topk,
+                global_num_experts=self.global_num_experts,
+                expert_map=self.expert_map,
+                topk_group=self.topk_group,
+                num_expert_group=self.num_expert_group,
+                custom_routing_function=self.custom_routing_function,
+                scoring_func=self.scoring_func,
+                routed_scaling_factor=self.routed_scaling_factor,
+                e_score_correction_bias=self.e_score_correction_bias,
+                activation=self.activation,
+                apply_router_weight_on_input=self.apply_router_weight_on_input,
+                enable_eplb=self.enable_eplb,
+                expert_load_view=self.expert_load_view,
+                logical_to_physical_map=self.logical_to_physical_map,
+                logical_replica_count=self.logical_replica_count,
             )
-        elif self.zero_expert_num is not None and self.zero_expert_num > 0:
-            assert isinstance(final_hidden_states, tuple)
-            final_hidden_states, zero_expert_result = final_hidden_states
 
-        def reduce_output(states: torch.Tensor,
+            if shared_output is not None:
-                          do_combine: bool = True) -> torch.Tensor:
+                assert not isinstance(final_hidden_states, tuple)
-            if do_naive_dispatch_combine and do_combine:
+                assert self.shared_experts is not None
-                states = get_ep_group().combine(states)
+                final_hidden_states = (
+                    shared_output,
+                    final_hidden_states,
+                )
+            elif self.zero_expert_num is not None and self.zero_expert_num > 0:
+                assert isinstance(final_hidden_states, tuple)
+                final_hidden_states, zero_expert_result = final_hidden_states
 
-            if self.reduce_results and (self.tp_size > 1 or self.ep_size > 1):
+            def reduce_output(states: torch.Tensor,
-                states = self.maybe_all_reduce_tensor_model_parallel(states)
+                              do_combine: bool = True) -> torch.Tensor:
+                if do_naive_dispatch_combine and do_combine:
+                    states = get_ep_group().combine(states,
+                                                    self.is_sequence_parallel)
 
-            return states
+                if (not self.is_sequence_parallel and self.reduce_results
+                        and (self.tp_size > 1 or self.ep_size > 1)):
+                    states = self.maybe_all_reduce_tensor_model_parallel(
+                        states)
 
-        if self.shared_experts is not None:
+                return states
-            return (
+
-                reduce_output(final_hidden_states[0], do_combine=False),
+            if self.shared_experts is not None:
-                reduce_output(final_hidden_states[1]),
+                return (
-            )
+                    reduce_output(final_hidden_states[0], do_combine=False),
-        elif self.zero_expert_num is not None and self.zero_expert_num > 0:
+                    reduce_output(final_hidden_states[1]),
-            assert isinstance(final_hidden_states, torch.Tensor)
+                )
-            return reduce_output(final_hidden_states) + zero_expert_result
+            elif self.zero_expert_num is not None and self.zero_expert_num > 0:
-        else:
+                assert isinstance(final_hidden_states, torch.Tensor)
-            return reduce_output(final_hidden_states)
+                return reduce_output(final_hidden_states) + zero_expert_result
+            else:
+                return reduce_output(final_hidden_states)
 
     @classmethod
     def make_expert_params_mapping(

vllm/model_executor/models/aria.py

@@ -9,7 +9,7 @@ from transformers import AriaConfig, AriaTextConfig, BatchFeature
 from transformers.models.aria.modeling_aria import AriaCrossAttention
 from transformers.models.aria.processing_aria import AriaProcessor
 
-from vllm.config import CacheConfig, QuantizationConfig, VllmConfig
+from vllm.config import QuantizationConfig, VllmConfig
 from vllm.distributed import get_tensor_model_parallel_rank
 from vllm.model_executor.layers.activation import get_act_fn
 from vllm.model_executor.layers.fused_moe import FusedMoE
@@ -298,14 +298,12 @@ class AriaTextDecoderLayer(LlamaDecoderLayer):
     Experts (MoE) Layer.
     """
 
-    def __init__(
+    def __init__(self, vllm_config: VllmConfig, prefix: str = "") -> None:
-        self,
+        super().__init__(vllm_config, prefix)
-        config: AriaTextConfig,
+
-        cache_config: Optional[CacheConfig] = None,
+        config = vllm_config.model_config.hf_config
-        quant_config: Optional[QuantizationConfig] = None,
+        quant_config = vllm_config.quant_config
-        prefix: str = "",
+
-    ) -> None:
-        super().__init__(config, cache_config, quant_config, prefix)
         self.mlp = AriaTextMoELayer(config,
                                     quant_config=quant_config,
                                     prefix=f"{prefix}.mlp")

vllm/model_executor/models/deepseek_v2.py

@@ -32,7 +32,6 @@ import torch
 from torch import nn
 from transformers import DeepseekV2Config, DeepseekV3Config
 
-import vllm.envs as envs
 from vllm.attention import Attention
 from vllm.compilation.decorators import support_torch_compile
 from vllm.config import CacheConfig, ParallelConfig, VllmConfig
@@ -56,8 +55,8 @@ from vllm.model_executor.layers.vocab_parallel_embedding import (
     ParallelLMHead, VocabParallelEmbedding)
 from vllm.model_executor.model_loader.weight_utils import (
     default_weight_loader, maybe_remap_kv_scale_name)
+from vllm.model_executor.models.utils import sequence_parallel_chunk
 from vllm.sequence import IntermediateTensors
-from vllm.utils import cdiv, direct_register_custom_op
 
 from .interfaces import MixtureOfExperts, SupportsLoRA, SupportsPP
 from .utils import (PPMissingLayer, is_pp_missing_parameter,
@@ -108,43 +107,6 @@ class DeepseekV2MLP(nn.Module):
         return x
 
 
-# Chunk x along the num_tokens axis for sequence parallelism
-# NOTE: This is wrapped in a torch custom op to work around the following issue:
-# The output tensor can have a sequence length 0 at small input sequence lengths
-# even though we explicitly pad to avoid this.
-def sequence_parallel_chunk(x: torch.Tensor) -> torch.Tensor:
-    tp_size = get_tensor_model_parallel_world_size()
-    tp_rank = get_tensor_model_parallel_rank()
-
-    # all_gather needs the sequence length to be divisible by tp_size
-    seq_len = x.size(0)
-    remainder = seq_len % tp_size
-    if remainder != 0:
-        pad_len = tp_size - remainder
-        x = nn.functional.pad(x, (0, 0, 0, pad_len))
-
-    chunk = x.shape[0] // tp_size
-    start = tp_rank * chunk
-    return torch.narrow(x, 0, start, chunk)
-
-
-def sequence_parallel_chunk_fake(x: torch.Tensor) -> torch.Tensor:
-    tp_size = get_tensor_model_parallel_world_size()
-    seq_len = cdiv(x.size(0), tp_size)
-    shape = list(x.shape)
-    shape[0] = seq_len
-    out = torch.empty(shape, dtype=x.dtype, device=x.device)
-    return out
-
-
-direct_register_custom_op(
-    op_name="sequence_parallel_chunk",
-    op_func=sequence_parallel_chunk,
-    fake_impl=sequence_parallel_chunk_fake,
-    tags=(torch.Tag.needs_fixed_stride_order, ),
-)
-
-
 class DeepseekV2MoE(nn.Module):
 
     def __init__(
@@ -166,20 +128,7 @@ class DeepseekV2MoE(nn.Module):
         self.n_routed_experts: int = config.n_routed_experts
         self.n_shared_experts: int = config.n_shared_experts
 
-        # The all_reduce at the end of attention (during o_proj) means that
+        self.is_sequence_parallel = parallel_config.use_sequence_parallel_moe
-        # inputs are replicated across each rank of the tensor parallel group.
-        # If using expert-parallelism with DeepEP All2All ops, replicated
-        # tokens results in useless duplicate computation and communication.
-        #
-        # In this case, ensure the input to the experts is sequence parallel
-        # to avoid the excess work.
-        #
-        # Not needed for pplx-kernels as it can handle duplicate input tokens.
-        self.is_sequence_parallel = (envs.VLLM_ALL2ALL_BACKEND
-                                     in ("deepep_high_throughput",
-                                         "deepep_low_latency")
-                                     and parallel_config.enable_expert_parallel
-                                     and self.tp_size > 1)
 
         if config.hidden_act != "silu":
             raise ValueError(f"Unsupported activation: {config.hidden_act}. "
@@ -278,8 +227,7 @@ class DeepseekV2MoE(nn.Module):
         # TODO: We can replace the all_reduce at the end of attn with a
         # reduce_scatter instead of chunking here.
         if self.is_sequence_parallel:
-            hidden_states = torch.ops.vllm.sequence_parallel_chunk(
+            hidden_states = sequence_parallel_chunk(hidden_states)
-                hidden_states)
 
         # router_logits: (num_tokens, n_experts)
         router_logits, _ = self.gate(hidden_states)

vllm/model_executor/models/ernie_mtp.py

@@ -29,10 +29,9 @@ import torch
 import torch.nn as nn
 from transformers import PretrainedConfig
 
-from vllm.config import CacheConfig, ModelConfig, VllmConfig
+from vllm.config import VllmConfig
 from vllm.model_executor.layers.layernorm import RMSNorm
 from vllm.model_executor.layers.logits_processor import LogitsProcessor
-from vllm.model_executor.layers.quantization import QuantizationConfig
 from vllm.model_executor.layers.vocab_parallel_embedding import (
     ParallelLMHead, VocabParallelEmbedding)
 from vllm.model_executor.model_loader.weight_utils import default_weight_loader
@@ -47,13 +46,11 @@ class ErnieMultiTokenPredictorLayer(nn.Module):
 
     def __init__(
         self,
-        config: PretrainedConfig,
+        vllm_config: VllmConfig,
         prefix: str,
-        model_config: ModelConfig,
-        cache_config: Optional[CacheConfig] = None,
-        quant_config: Optional[QuantizationConfig] = None,
     ) -> None:
         super().__init__()
+        config = vllm_config.model_config.hf_config
 
         self.mtp_emb_norm = RMSNorm(config.hidden_size,
                                     eps=config.rms_norm_eps)
@@ -62,8 +59,7 @@ class ErnieMultiTokenPredictorLayer(nn.Module):
         self.mtp_linear_proj = nn.Linear(config.hidden_size * 2,
                                          config.hidden_size,
                                          bias=False)
-        self.mtp_block = LlamaDecoderLayer(config, cache_config, quant_config,
+        self.mtp_block = LlamaDecoderLayer(vllm_config, prefix)
-                                           prefix)
 
     def forward(
         self,
@@ -102,10 +98,8 @@ class ErnieMultiTokenPredictor(nn.Module):
         self.layers = torch.nn.ModuleDict({
             str(idx):
             ErnieMultiTokenPredictorLayer(
-                config,
+                vllm_config,
                 f"{prefix}.layers.{idx}",
-                model_config=vllm_config.model_config,
-                cache_config=vllm_config.cache_config,
             )
             for idx in range(self.mtp_start_layer_idx,
                              self.mtp_start_layer_idx + self.num_mtp_layers)

vllm/model_executor/models/glm4.py

@@ -136,14 +136,16 @@ class Glm4Attention(nn.Module):
 
 class Glm4DecoderLayer(nn.Module):
 
-    def __init__(
+    def __init__(self,
-        self,
+                 vllm_config: VllmConfig,
-        config: Glm4Config,
+                 prefix: str = "",
-        cache_config: Optional[CacheConfig] = None,
+                 config: Optional[Glm4Config] = None) -> None:
-        quant_config: Optional[QuantizationConfig] = None,
-        prefix: str = "",
-    ) -> None:
         super().__init__()
+
+        config = config or vllm_config.model_config.hf_config
+        cache_config = vllm_config.cache_config
+        quant_config = vllm_config.quant_config
+
         self.hidden_size = config.hidden_size
         rope_theta = getattr(config, "rope_theta", 1000000)
         rope_scaling = getattr(config, "rope_scaling", None)

vllm/model_executor/models/gpt_oss.py

@@ -13,7 +13,8 @@ from vllm.compilation.decorators import support_torch_compile
 from vllm.config import CacheConfig, VllmConfig
 from vllm.distributed import (get_ep_group, get_pp_group,
                               get_tensor_model_parallel_rank,
-                              get_tensor_model_parallel_world_size)
+                              get_tensor_model_parallel_world_size,
+                              tensor_model_parallel_all_gather)
 from vllm.model_executor.layers.fused_moe import FusedMoE
 from vllm.model_executor.layers.layernorm import RMSNorm
 from vllm.model_executor.layers.linear import (QKVParallelLinear,
@@ -24,6 +25,7 @@ from vllm.model_executor.layers.rotary_embedding import get_rope
 from vllm.model_executor.layers.vocab_parallel_embedding import (
     ParallelLMHead, VocabParallelEmbedding)
 from vllm.model_executor.model_loader.weight_utils import default_weight_loader
+from vllm.model_executor.models.utils import sequence_parallel_chunk
 from vllm.sequence import IntermediateTensors
 from vllm.utils import cdiv
 
@@ -132,12 +134,18 @@ class MLPBlock(torch.nn.Module):
 
     def __init__(
         self,
-        config: GptOssConfig,
+        vllm_config: VllmConfig,
         layer_idx: int,
-        quant_config: QuantizationConfig,
         prefix: str = "",
     ):
         super().__init__()
+
+        config = vllm_config.model_config.hf_config
+        quant_config = vllm_config.quant_config
+        parallel_config = vllm_config.parallel_config
+
+        self.is_sequence_parallel = parallel_config.use_sequence_parallel_moe
+
         self.layer_idx = layer_idx
         self.num_experts = config.num_local_experts
         self.experts_per_token = config.num_experts_per_tok
@@ -155,11 +163,20 @@ class MLPBlock(torch.nn.Module):
                                 prefix=f"{prefix}.experts",
                                 apply_router_weight_on_input=False,
                                 has_bias=True,
-                                activation="swigluoai")
+                                activation="swigluoai",
+                                is_sequence_parallel=self.is_sequence_parallel)
 
     def forward(self, x: torch.Tensor) -> torch.Tensor:
+        num_tokens = x.shape[0]
+        if self.is_sequence_parallel:
+            x = sequence_parallel_chunk(x)
+
         g = self.router(x)
         x = self.experts(hidden_states=x, router_logits=g)
+
+        if self.is_sequence_parallel:
+            x = tensor_model_parallel_all_gather(x.contiguous(), 0)
+            x = x[:num_tokens]
         return x
 
 
@@ -167,19 +184,20 @@ class TransformerBlock(torch.nn.Module):
 
     def __init__(
         self,
-        config: GptOssConfig,
+        vllm_config: VllmConfig,
-        cache_config: CacheConfig,
-        quant_config: QuantizationConfig,
         prefix: str = "",
     ):
         super().__init__()
+
+        config = vllm_config.model_config.hf_config
+        cache_config = vllm_config.cache_config
+
         self.layer_idx = extract_layer_index(prefix)
         self.attn = OAIAttention(config,
                                  prefix=f"{prefix}.attn",
                                  cache_config=cache_config)
-        self.mlp = MLPBlock(config,
+        self.mlp = MLPBlock(vllm_config,
                             self.layer_idx,
-                            quant_config=quant_config,
                             prefix=f"{prefix}.mlp")
         self.input_layernorm = RMSNorm(config.hidden_size, eps=1e-5)
         self.post_attention_layernorm = RMSNorm(config.hidden_size, eps=1e-5)
@@ -216,8 +234,6 @@ class GptOssModel(nn.Module):
     ):
         super().__init__()
         self.config = vllm_config.model_config.hf_config
-        self.cache_config = vllm_config.cache_config
-        self.quant_config = vllm_config.quant_config
         self.parallel_config = vllm_config.parallel_config
         self.config.hidden_size = self.config.hidden_size
         self.embedding = VocabParallelEmbedding(
@@ -227,9 +243,7 @@ class GptOssModel(nn.Module):
         self.start_layer, self.end_layer, self.layers = make_layers(
             self.config.num_hidden_layers,
             lambda prefix: TransformerBlock(
-                self.config,
+                vllm_config,
-                cache_config=self.cache_config,
-                quant_config=self.quant_config,
                 prefix=prefix,
             ),
             prefix=f"{prefix}.layers",

vllm/model_executor/models/granitemoe.py

@@ -29,12 +29,13 @@ from typing import Any, Optional
 
 import torch
 from torch import nn
-from transformers.models.granitemoe import GraniteMoeConfig
 
 from vllm.attention import Attention
 from vllm.compilation.decorators import support_torch_compile
 from vllm.config import CacheConfig, VllmConfig
-from vllm.distributed import get_pp_group, get_tensor_model_parallel_world_size
+from vllm.distributed import (get_pp_group,
+                              get_tensor_model_parallel_world_size,
+                              tensor_model_parallel_all_gather)
 from vllm.model_executor.layers.fused_moe import FusedMoE
 from vllm.model_executor.layers.layernorm import RMSNorm
 from vllm.model_executor.layers.linear import (QKVParallelLinear,
@@ -48,6 +49,7 @@ from vllm.model_executor.layers.vocab_parallel_embedding import (
     DEFAULT_VOCAB_PADDING_SIZE, ParallelLMHead, VocabParallelEmbedding)
 from vllm.model_executor.model_loader.weight_utils import (
     default_weight_loader, maybe_remap_kv_scale_name)
+from vllm.model_executor.models.utils import sequence_parallel_chunk
 from vllm.sequence import IntermediateTensors
 
 from .interfaces import SupportsLoRA, SupportsPP
@@ -71,9 +73,11 @@ class GraniteMoeMoE(nn.Module):
                  params_dtype: Optional[torch.dtype] = None,
                  quant_config: Optional[QuantizationConfig] = None,
                  tp_size: Optional[int] = None,
+                 is_sequence_parallel=False,
                  prefix: str = ""):
         super().__init__()
         self.hidden_size = hidden_size
+        self.is_sequence_parallel = is_sequence_parallel
 
         # Gate always runs at half / full precision for now.
         self.gate = ReplicatedLinear(hidden_size,
@@ -92,15 +96,27 @@ class GraniteMoeMoE(nn.Module):
                                 renormalize=True,
                                 quant_config=quant_config,
                                 tp_size=tp_size,
-                                prefix=f"{prefix}.experts")
+                                prefix=f"{prefix}.experts",
+                                is_sequence_parallel=self.is_sequence_parallel)
 
     def forward(self, hidden_states: torch.Tensor) -> torch.Tensor:
         # NOTE: hidden_states can have either 1D or 2D shape.
         orig_shape = hidden_states.shape
         hidden_states = hidden_states.view(-1, self.hidden_size)
+
+        if self.is_sequence_parallel:
+            hidden_states = sequence_parallel_chunk(hidden_states)
+
         # router_logits: (num_tokens, n_experts)
         router_logits, _ = self.gate(hidden_states)
         final_hidden_states = self.experts(hidden_states, router_logits)
+
+        if self.is_sequence_parallel:
+            final_hidden_states = tensor_model_parallel_all_gather(
+                final_hidden_states, 0)
+            num_tokens = orig_shape[0]
+            final_hidden_states = final_hidden_states[:num_tokens]
+
         return final_hidden_states.view(orig_shape)
 
 
@@ -191,12 +207,16 @@ class GraniteMoeDecoderLayer(nn.Module):
 
     def __init__(
         self,
-        config: GraniteMoeConfig,
+        vllm_config: VllmConfig,
-        cache_config: Optional[CacheConfig] = None,
-        quant_config: Optional[QuantizationConfig] = None,
         prefix: str = "",
     ) -> None:
         super().__init__()
+
+        config = vllm_config.model_config.hf_config
+        cache_config = vllm_config.cache_config
+        quant_config = vllm_config.quant_config
+        parallel_config = vllm_config.parallel_config
+
         self.hidden_size = config.hidden_size
         # Requires transformers > 4.32.0
         rope_theta = getattr(config, "rope_theta", 10000)
@@ -218,6 +238,7 @@ class GraniteMoeDecoderLayer(nn.Module):
             hidden_size=config.hidden_size,
             intermediate_size=config.intermediate_size,
             quant_config=quant_config,
+            is_sequence_parallel=parallel_config.use_sequence_parallel_moe,
             prefix=f"{prefix}.block_sparse_moe")
 
         self.input_layernorm = RMSNorm(config.hidden_size,
@@ -255,7 +276,6 @@ class GraniteMoeModel(nn.Module):
         super().__init__()
 
         config = vllm_config.model_config.hf_config
-        cache_config = vllm_config.cache_config
         quant_config = vllm_config.quant_config
         lora_config = vllm_config.lora_config
 
@@ -275,9 +295,7 @@ class GraniteMoeModel(nn.Module):
 
         self.start_layer, self.end_layer, self.layers = make_layers(
             config.num_hidden_layers,
-            lambda prefix: GraniteMoeDecoderLayer(
+            lambda prefix: GraniteMoeDecoderLayer(vllm_config, prefix=prefix),
-                config, cache_config, quant_config=quant_config, prefix=prefix
-            ),
             prefix=f"{prefix}.layers")
 
         self.norm = RMSNorm(config.hidden_size, eps=config.rms_norm_eps)

vllm/model_executor/models/llama.py

@@ -68,6 +68,7 @@ class LlamaMLP(nn.Module):
         bias: bool = False,
         prefix: str = "",
         reduce_results: bool = True,
+        disable_tp: bool = False,
     ) -> None:
         super().__init__()
         self.gate_up_proj = MergedColumnParallelLinear(
@@ -75,6 +76,7 @@ class LlamaMLP(nn.Module):
             output_sizes=[intermediate_size] * 2,
             bias=bias,
             quant_config=quant_config,
+            disable_tp=disable_tp,
             prefix=f"{prefix}.gate_up_proj",
         )
         self.down_proj = RowParallelLinear(
@@ -83,6 +85,7 @@ class LlamaMLP(nn.Module):
             bias=bias,
             quant_config=quant_config,
             reduce_results=reduce_results,
+            disable_tp=disable_tp,
             prefix=f"{prefix}.down_proj",
         )
         if hidden_act != "silu":
@@ -237,14 +240,16 @@ class LlamaAttention(nn.Module):
 
 class LlamaDecoderLayer(nn.Module):
 
-    def __init__(
+    def __init__(self,
-        self,
+                 vllm_config: VllmConfig,
-        config: LlamaConfig,
+                 prefix: str = "",
-        cache_config: Optional[CacheConfig] = None,
+                 config: Optional[LlamaConfig] = None) -> None:
-        quant_config: Optional[QuantizationConfig] = None,
-        prefix: str = "",
-    ) -> None:
         super().__init__()
+
+        config = config or vllm_config.model_config.hf_config
+        cache_config = vllm_config.cache_config
+        quant_config = vllm_config.quant_config
+
         self.hidden_size = config.hidden_size
         rope_theta = getattr(config, "rope_theta", 10000)
         rope_scaling = getattr(config, "rope_scaling", None)
@@ -335,7 +340,6 @@ class LlamaModel(nn.Module):
         super().__init__()
 
         config = vllm_config.model_config.hf_config
-        cache_config = vllm_config.cache_config
         quant_config = vllm_config.quant_config
         lora_config = vllm_config.lora_config
 
@@ -357,10 +361,7 @@ class LlamaModel(nn.Module):
             self.embed_tokens = PPMissingLayer()
         self.start_layer, self.end_layer, self.layers = make_layers(
             config.num_hidden_layers,
-            lambda prefix: layer_type(config=config,
+            lambda prefix: layer_type(vllm_config=vllm_config, prefix=prefix),
-                                      cache_config=cache_config,
-                                      quant_config=quant_config,
-                                      prefix=prefix),
             prefix=f"{prefix}.layers",
         )
         if get_pp_group().is_last_rank:

vllm/model_executor/models/llama4.py

@@ -28,7 +28,8 @@ from vllm.attention import Attention
 from vllm.attention.layers.chunked_local_attention import ChunkedLocalAttention
 from vllm.compilation.decorators import support_torch_compile
 from vllm.config import CacheConfig, VllmConfig
-from vllm.distributed import get_tensor_model_parallel_world_size
+from vllm.distributed import (get_tensor_model_parallel_world_size,
+                              tensor_model_parallel_all_gather)
 from vllm.model_executor.layers.fused_moe import FusedMoE
 from vllm.model_executor.layers.layernorm import RMSNorm
 from vllm.model_executor.layers.linear import (QKVParallelLinear,
@@ -39,6 +40,7 @@ from vllm.model_executor.layers.rotary_embedding import get_rope
 from vllm.model_executor.layers.shared_fused_moe import SharedFusedMoE
 from vllm.model_executor.model_loader.weight_utils import (
     default_weight_loader, maybe_remap_kv_scale_name)
+from vllm.model_executor.models.utils import sequence_parallel_chunk
 
 from .llama import LlamaForCausalLM, LlamaMLP, LlamaModel
 from .utils import (AutoWeightsLoader, extract_layer_index, fast_topk,
@@ -59,13 +61,16 @@ class Llama4MoE(nn.Module):
         router_scores = torch.sigmoid(router_scores.float())
         return (router_scores, router_indices.to(torch.int32))
 
-    def __init__(self,
+    def __init__(self, vllm_config: VllmConfig, prefix: str = ""):
-                 config: Llama4TextConfig,
-                 quant_config: Optional[QuantizationConfig] = None,
-                 prefix: str = ""):
         super().__init__()
+
+        config = vllm_config.model_config.hf_config
+        parallel_config = vllm_config.parallel_config
+        quant_config = vllm_config.quant_config
+
         self.tp_size = get_tensor_model_parallel_world_size()
         self.top_k = config.num_experts_per_tok
+        self.is_sequence_parallel = parallel_config.use_sequence_parallel_moe
 
         intermediate_size_moe = config.intermediate_size
         self.router = ReplicatedLinear(config.hidden_size,
@@ -82,6 +87,7 @@ class Llama4MoE(nn.Module):
             bias=False,
             prefix=f"{prefix}.shared_expert",
             reduce_results=False,
+            disable_tp=self.is_sequence_parallel,
         )
 
         self.experts = SharedFusedMoE(
@@ -96,9 +102,14 @@ class Llama4MoE(nn.Module):
             renormalize=False,
             quant_config=quant_config,
             prefix=f"{prefix}.experts",
+            is_sequence_parallel=self.is_sequence_parallel,
         )
 
     def forward(self, hidden_states):
+        num_tokens = hidden_states.shape[0]
+        if self.is_sequence_parallel:
+            hidden_states = sequence_parallel_chunk(hidden_states)
+
         router_logits, _ = self.router(hidden_states)
 
         shared_out, routed_out = self.experts(
@@ -107,7 +118,10 @@ class Llama4MoE(nn.Module):
         )
         experts_out = routed_out + shared_out
 
-        if self.tp_size > 1:
+        if self.is_sequence_parallel:
+            experts_out = tensor_model_parallel_all_gather(experts_out, 0)
+            experts_out = experts_out[:num_tokens]
+        elif self.tp_size > 1:
             experts_out = self.experts.maybe_all_reduce_tensor_model_parallel(
                 experts_out)
 
@@ -257,15 +271,16 @@ class Llama4Attention(nn.Module):
 
 class Llama4DecoderLayer(nn.Module):
 
-    def __init__(
+    def __init__(self,
-        self,
+                 vllm_config: VllmConfig,
-        config: Llama4TextConfig,
+                 prefix: str = "",
-        cache_config: Optional[CacheConfig] = None,
+                 config: Optional[Llama4TextConfig] = None) -> None:
-        quant_config: Optional[QuantizationConfig] = None,
-        prefix: str = "",
-    ) -> None:
         super().__init__()
 
+        config = config or vllm_config.model_config.hf_config
+        cache_config = vllm_config.cache_config
+        quant_config = vllm_config.quant_config
+
         self.layer_idx = extract_layer_index(prefix)
         self.global_layer = config.no_rope_layers[self.layer_idx] == 0
         self.hidden_size = config.hidden_size
@@ -291,8 +306,7 @@ class Llama4DecoderLayer(nn.Module):
             self.layer_idx + 1) % config.interleave_moe_layer_step == 0
         if is_moe_layer:
             self.feed_forward = Llama4MoE(
-                config=config,
+                vllm_config=vllm_config,
-                quant_config=quant_config,
                 prefix=f"{prefix}.feed_forward",
             )
         else:

vllm/model_executor/models/llama4_eagle.py

@@ -68,9 +68,9 @@ class LlamaModel(nn.Module):
 
         self.layers = nn.ModuleList([
             Llama4DecoderLayer(
-                self.config,
+                vllm_config=vllm_config,
-                quant_config=quant_config,
                 prefix=maybe_prefix(prefix, f"layers.{i + start_layer_id}"),
+                config=self.config,
             ) for i in range(self.config.num_hidden_layers)
         ])
         self.fc = torch.nn.Linear(self.config.hidden_size * 2,

vllm/model_executor/models/llama_eagle.py

@@ -28,11 +28,12 @@ class LlamaDecoderLayer(LlamaDecoderLayer):
 
     def __init__(
         self,
-        config: LlamaConfig,
+        vllm_config: VllmConfig,
         disable_input_layernorm: bool,
         prefix: str = "",
+        config: Optional[LlamaConfig] = None,
     ) -> None:
-        super().__init__(config, prefix=prefix)
+        super().__init__(vllm_config, prefix=prefix, config=config)
 
         # Skip the input_layernorm
         # https://github.com/SafeAILab/EAGLE/blob/35c78f6cdc19a73e05cf5c330b4c358dad970c6a/eagle/model/cnets.py#L427
@@ -64,9 +65,10 @@ class LlamaModel(nn.Module):
 
         self.layers = nn.ModuleList([
             LlamaDecoderLayer(
-                self.config,
+                vllm_config,
                 i == 0,
                 prefix=maybe_prefix(prefix, f"layers.{i + start_layer_id}"),
+                config=self.config,
             ) for i in range(self.config.num_hidden_layers)
         ])
         self.fc = torch.nn.Linear(self.config.hidden_size * 2,

vllm/model_executor/models/llama_eagle3.py

@@ -9,13 +9,11 @@ import torch.nn as nn
 from transformers import LlamaConfig
 
 from vllm.compilation.decorators import support_torch_compile
-from vllm.config import CacheConfig, VllmConfig, get_current_vllm_config
+from vllm.config import VllmConfig, get_current_vllm_config
 from vllm.logger import init_logger
 from vllm.model_executor.layers.layernorm import RMSNorm
 from vllm.model_executor.layers.linear import QKVParallelLinear
 from vllm.model_executor.layers.logits_processor import LogitsProcessor
-from vllm.model_executor.layers.quantization.base_config import (
-    QuantizationConfig)
 from vllm.model_executor.layers.vocab_parallel_embedding import (
     DEFAULT_VOCAB_PADDING_SIZE, ParallelLMHead, VocabParallelEmbedding)
 from vllm.model_executor.model_loader.weight_utils import default_weight_loader
@@ -29,17 +27,14 @@ logger = init_logger(__name__)
 
 class LlamaDecoderLayer(LlamaDecoderLayer):
 
-    def __init__(
+    def __init__(self,
-        self,
+                 vllm_config: VllmConfig,
-        config: LlamaConfig,
+                 prefix: str = "",
-        cache_config: Optional[CacheConfig] = None,
+                 config: Optional[LlamaConfig] = None) -> None:
-        quant_config: Optional[QuantizationConfig] = None,
+        super().__init__(vllm_config, prefix=prefix, config=config)
-        prefix: str = "",
+
-    ) -> None:
+        config = config or vllm_config.model_config.hf_config
-        super().__init__(config,
+        quant_config = vllm_config.quant_config
-                         cache_config=cache_config,
-                         quant_config=quant_config,
-                         prefix=prefix)
 
         # override qkv
         self.self_attn.qkv_proj = QKVParallelLinear(
@@ -127,9 +122,9 @@ class LlamaModel(nn.Module):
 
         self.layers = nn.ModuleList([
             LlamaDecoderLayer(
-                config=self.config,
+                current_vllm_config,
-                cache_config=current_vllm_config.cache_config,
                 prefix=maybe_prefix(prefix, f"layers.{start_layer_id}"),
+                config=self.config,
             )
         ])
         if hasattr(self.config, "target_hidden_size"):

vllm/model_executor/models/qwen2_5_vl.py

@@ -274,6 +274,8 @@ class Qwen2_5_VisionAttention(nn.Module):
         quant_config: Optional[QuantizationConfig] = None,
         prefix: str = "",
         use_data_parallel: bool = False,
+        attn_backend: _Backend = _Backend.TORCH_SDPA,
+        use_upstream_fa: bool = False,
     ) -> None:
         super().__init__()
         # Per attention head and per partition values.
@@ -300,25 +302,8 @@ class Qwen2_5_VisionAttention(nn.Module):
                                       quant_config=quant_config,
                                       prefix=f"{prefix}.proj",
                                       disable_tp=use_data_parallel)
-
+        self.attn_backend = attn_backend
-        # Detect attention implementation.
+        self.use_upstream_fa = use_upstream_fa
-        self.attn_backend = get_vit_attn_backend(
-            head_size=self.hidden_size_per_attention_head,
-            dtype=torch.get_default_dtype())
-        self.use_upstream_fa = False
-        if self.attn_backend != _Backend.FLASH_ATTN and \
-            check_upstream_fa_availability(
-                torch.get_default_dtype()):
-            self.attn_backend = _Backend.FLASH_ATTN
-            self.use_upstream_fa = True
-
-        if self.attn_backend not in {
-                _Backend.FLASH_ATTN, _Backend.TORCH_SDPA, _Backend.XFORMERS,
-                _Backend.ROCM_AITER_FA
-        }:
-            raise RuntimeError(
-                f"Qwen2.5-VL does not support {self.attn_backend} backend now."
-            )
         self.is_flash_attn_backend = self.attn_backend in {
             _Backend.FLASH_ATTN, _Backend.ROCM_AITER_FA
         }
@@ -443,6 +428,8 @@ class Qwen2_5_VisionBlock(nn.Module):
         quant_config: Optional[QuantizationConfig] = None,
         prefix: str = "",
         use_data_parallel: bool = False,
+        attn_backend: _Backend = _Backend.TORCH_SDPA,
+        use_upstream_fa: bool = False,
     ) -> None:
         super().__init__()
         if norm_layer is None:
@@ -455,7 +442,9 @@ class Qwen2_5_VisionBlock(nn.Module):
             projection_size=dim,
             quant_config=quant_config,
             prefix=f"{prefix}.attn",
-            use_data_parallel=use_data_parallel)
+            use_data_parallel=use_data_parallel,
+            attn_backend=attn_backend,
+            use_upstream_fa=use_upstream_fa)
         self.mlp = Qwen2_5_VisionMLP(dim,
                                      mlp_hidden_dim,
                                      act_fn=act_fn,
@@ -627,17 +616,35 @@ class Qwen2_5_VisionTransformer(nn.Module):
         head_dim = self.hidden_size // self.num_heads
         self.rotary_pos_emb = Qwen2_5_VisionRotaryEmbedding(head_dim // 2)
 
+        use_upstream_fa = False
+        self.attn_backend = get_vit_attn_backend(
+            head_size=head_dim, dtype=torch.get_default_dtype())
+        if self.attn_backend != _Backend.FLASH_ATTN and \
+            check_upstream_fa_availability(
+                torch.get_default_dtype()):
+            self.attn_backend = _Backend.FLASH_ATTN
+            use_upstream_fa = True
+
+        if self.attn_backend not in {
+                _Backend.FLASH_ATTN, _Backend.TORCH_SDPA, _Backend.XFORMERS,
+                _Backend.ROCM_AITER_FA
+        }:
+            raise RuntimeError(
+                f"Qwen2.5-VL does not support {self.attn_backend} backend now."
+            )
+
         self.blocks = nn.ModuleList([
-            Qwen2_5_VisionBlock(dim=self.hidden_size,
+            Qwen2_5_VisionBlock(
-                                num_heads=self.num_heads,
+                dim=self.hidden_size,
-                                mlp_hidden_dim=vision_config.intermediate_size,
+                num_heads=self.num_heads,
-                                act_fn=get_act_and_mul_fn(
+                mlp_hidden_dim=vision_config.intermediate_size,
-                                    vision_config.hidden_act),
+                act_fn=get_act_and_mul_fn(vision_config.hidden_act),
-                                norm_layer=norm_layer,
+                norm_layer=norm_layer,
-                                quant_config=quant_config,
+                quant_config=quant_config,
-                                prefix=f"{prefix}.blocks.{layer_idx}",
+                prefix=f"{prefix}.blocks.{layer_idx}",
-                                use_data_parallel=use_data_parallel)
+                use_data_parallel=use_data_parallel,
-            for layer_idx in range(depth)
+                attn_backend=self.attn_backend,
+                use_upstream_fa=use_upstream_fa) for layer_idx in range(depth)
         ])
         self.merger = Qwen2_5_VisionPatchMerger(
             d_model=vision_config.out_hidden_size,
@@ -648,12 +655,6 @@ class Qwen2_5_VisionTransformer(nn.Module):
             prefix=f"{prefix}.merger",
             use_data_parallel=use_data_parallel,
         )
-        self.attn_backend = get_vit_attn_backend(
-            head_size=head_dim, dtype=torch.get_default_dtype())
-        if self.attn_backend != _Backend.FLASH_ATTN and \
-            check_upstream_fa_availability(
-                torch.get_default_dtype()):
-            self.attn_backend = _Backend.FLASH_ATTN
 
     @property
     def dtype(self) -> torch.dtype:

vllm/model_executor/models/qwen2_vl.py

@@ -79,7 +79,7 @@ from .vision import get_vit_attn_backend, run_dp_sharded_mrope_vision_model
 logger = init_logger(__name__)
 
 # For profile run
-_MAX_FRAMES_PER_VIDEO = 32
+_MAX_FRAMES_PER_VIDEO = 14
 
 # === Vision Inputs === #
 
@@ -932,6 +932,7 @@ class Qwen2VLProcessingInfo(BaseProcessingInfo):
         _, num_image_tokens = self._get_vision_info(
             image_width=image_width,
             image_height=image_height,
+            num_frames=1,
             image_processor=image_processor,
         )
         return num_image_tokens
@@ -956,6 +957,7 @@ class Qwen2VLProcessingInfo(BaseProcessingInfo):
         max_image_size, _ = self._get_vision_info(
             image_width=9999999,
             image_height=9999999,
+            num_frames=1,
             image_processor=None,
         )
         return max_image_size
@@ -969,10 +971,12 @@ class Qwen2VLProcessingInfo(BaseProcessingInfo):
             image_processor=None,
         )
 
-    def _get_max_video_frames(self, max_tokens: int) -> int:
+    def _get_max_video_frames(self,
+                              max_tokens: int,
+                              start_num_frames: int = 1) -> int:
         target_width, target_height = self.get_image_size_with_most_features()
 
-        num_frames = 0
+        num_frames = start_num_frames
 
         while True:
             next_num_frames = num_frames + 1
@@ -994,12 +998,13 @@ class Qwen2VLProcessingInfo(BaseProcessingInfo):
         self,
         seq_len: int,
         mm_counts: Mapping[str, int],
+        max_frames_per_video: int = _MAX_FRAMES_PER_VIDEO,
     ) -> int:
         max_videos = mm_counts.get("video", 0)
 
         max_total_frames = self._get_max_video_frames(seq_len)
         max_frames_per_video = min(max_total_frames // max(max_videos, 1),
-                                   _MAX_FRAMES_PER_VIDEO)
+                                   max_frames_per_video)
 
         return max(max_frames_per_video, 1)
 

vllm/model_executor/models/qwen3_moe.py

@@ -29,13 +29,13 @@ from typing import Any, Optional, Union
 
 import torch
 from torch import nn
-from transformers import Qwen3MoeConfig
 
 from vllm.attention import Attention
 from vllm.compilation.decorators import support_torch_compile
 from vllm.config import CacheConfig, VllmConfig, get_current_vllm_config
 from vllm.distributed import (get_ep_group, get_pp_group,
-                              get_tensor_model_parallel_world_size)
+                              get_tensor_model_parallel_world_size,
+                              tensor_model_parallel_all_gather)
 from vllm.logger import init_logger
 from vllm.model_executor.layers.activation import SiluAndMul
 from vllm.model_executor.layers.fused_moe import FusedMoE
@@ -51,6 +51,7 @@ from vllm.model_executor.layers.vocab_parallel_embedding import (
     ParallelLMHead, VocabParallelEmbedding)
 from vllm.model_executor.model_loader.weight_utils import (
     default_weight_loader, maybe_remap_kv_scale_name)
+from vllm.model_executor.models.utils import sequence_parallel_chunk
 from vllm.sequence import IntermediateTensors
 
 from .interfaces import MixtureOfExperts, SupportsLoRA, SupportsPP
@@ -101,12 +102,15 @@ class Qwen3MoeSparseMoeBlock(nn.Module):
 
     def __init__(
         self,
-        config: Qwen3MoeConfig,
+        vllm_config: VllmConfig,
-        quant_config: Optional[QuantizationConfig] = None,
         prefix: str = "",
-        enable_eplb: bool = False,
     ):
         super().__init__()
+
+        config = vllm_config.model_config.hf_text_config
+        parallel_config = vllm_config.parallel_config
+        quant_config = vllm_config.quant_config
+
         self.tp_size = get_tensor_model_parallel_world_size()
 
         self.ep_group = get_ep_group().device_group
@@ -114,6 +118,8 @@ class Qwen3MoeSparseMoeBlock(nn.Module):
         self.ep_size = self.ep_group.size()
         self.n_routed_experts = config.num_experts
 
+        self.is_sequence_parallel = parallel_config.use_sequence_parallel_moe
+
         if self.tp_size > config.num_experts:
             raise ValueError(
                 f"Tensor parallel size {self.tp_size} is greater than "
@@ -122,7 +128,7 @@ class Qwen3MoeSparseMoeBlock(nn.Module):
         # Load balancing settings.
         vllm_config = get_current_vllm_config()
         eplb_config = vllm_config.parallel_config.eplb_config
-        self.enable_eplb = enable_eplb
+        self.enable_eplb = parallel_config.enable_eplb
 
         self.n_logical_experts = self.n_routed_experts
         self.n_redundant_experts = eplb_config.num_redundant_experts
@@ -144,7 +150,8 @@ class Qwen3MoeSparseMoeBlock(nn.Module):
                                 quant_config=quant_config,
                                 prefix=f"{prefix}.experts",
                                 enable_eplb=self.enable_eplb,
-                                num_redundant_experts=self.n_redundant_experts)
+                                num_redundant_experts=self.n_redundant_experts,
+                                is_sequence_parallel=self.is_sequence_parallel)
 
         self.gate = ReplicatedLinear(config.hidden_size,
                                      config.num_experts,
@@ -156,14 +163,22 @@ class Qwen3MoeSparseMoeBlock(nn.Module):
         assert hidden_states.dim(
         ) <= 2, "Qwen3MoeSparseMoeBlock only supports 1D or 2D inputs"
         is_input_1d = hidden_states.dim() == 1
-        hidden_dim = hidden_states.shape[-1]
+        num_tokens, hidden_dim = hidden_states.shape
         hidden_states = hidden_states.view(-1, hidden_dim)
 
+        if self.is_sequence_parallel:
+            hidden_states = sequence_parallel_chunk(hidden_states)
+
         # router_logits: (num_tokens, n_experts)
         router_logits, _ = self.gate(hidden_states)
         final_hidden_states = self.experts(hidden_states=hidden_states,
                                            router_logits=router_logits)
 
+        if self.is_sequence_parallel:
+            final_hidden_states = tensor_model_parallel_all_gather(
+                final_hidden_states, 0)
+            final_hidden_states = final_hidden_states[:num_tokens]
+
         # return to 1d if input is 1d
         return final_hidden_states.squeeze(0) if is_input_1d else \
             final_hidden_states
@@ -275,15 +290,13 @@ class Qwen3MoeAttention(nn.Module):
 
 class Qwen3MoeDecoderLayer(nn.Module):
 
-    def __init__(
+    def __init__(self, vllm_config: VllmConfig, prefix: str = "") -> None:
-        self,
-        config: Qwen3MoeConfig,
-        cache_config: Optional[CacheConfig] = None,
-        quant_config: Optional[QuantizationConfig] = None,
-        prefix: str = "",
-        enable_eplb: bool = False,
-    ) -> None:
         super().__init__()
+
+        config = vllm_config.model_config.hf_text_config
+        cache_config = vllm_config.cache_config
+        quant_config = vllm_config.quant_config
+
         self.hidden_size = config.hidden_size
         rope_theta = getattr(config, "rope_theta", 10000)
         rope_scaling = getattr(config, "rope_scaling", None)
@@ -315,10 +328,8 @@ class Qwen3MoeDecoderLayer(nn.Module):
         if (layer_idx not in mlp_only_layers) and (
                 config.num_experts > 0 and
             (layer_idx + 1) % config.decoder_sparse_step == 0):
-            self.mlp = Qwen3MoeSparseMoeBlock(config=config,
+            self.mlp = Qwen3MoeSparseMoeBlock(vllm_config=vllm_config,
-                                              quant_config=quant_config,
+                                              prefix=f"{prefix}.mlp")
-                                              prefix=f"{prefix}.mlp",
-                                              enable_eplb=enable_eplb)
         else:
             self.mlp = Qwen3MoeMLP(hidden_size=config.hidden_size,
                                    intermediate_size=config.intermediate_size,
@@ -361,11 +372,9 @@ class Qwen3MoeModel(nn.Module):
     def __init__(self, *, vllm_config: VllmConfig, prefix: str = ""):
         super().__init__()
 
-        config = vllm_config.model_config.hf_config.get_text_config()
+        config = vllm_config.model_config.hf_text_config
-        cache_config = vllm_config.cache_config
         quant_config = vllm_config.quant_config
         parallel_config = vllm_config.parallel_config
-        enable_eplb = parallel_config.enable_eplb
         eplb_config = parallel_config.eplb_config
         self.num_redundant_experts = eplb_config.num_redundant_experts
 
@@ -379,11 +388,8 @@ class Qwen3MoeModel(nn.Module):
             prefix=f"{prefix}.embed_tokens")
         self.start_layer, self.end_layer, self.layers = make_layers(
             config.num_hidden_layers,
-            lambda prefix: Qwen3MoeDecoderLayer(config=config,
+            lambda prefix: Qwen3MoeDecoderLayer(vllm_config=vllm_config,
-                                                cache_config=cache_config,
+                                                prefix=prefix),
-                                                quant_config=quant_config,
-                                                prefix=prefix,
-                                                enable_eplb=enable_eplb),
             prefix=f"{prefix}.layers",
         )
         self.norm = RMSNorm(config.hidden_size, eps=config.rms_norm_eps)
@@ -580,7 +586,7 @@ class Qwen3MoeForCausalLM(nn.Module, SupportsPP, SupportsLoRA,
 
     def __init__(self, *, vllm_config: VllmConfig, prefix: str = ""):
         super().__init__()
-        config = vllm_config.model_config.hf_config
+        config = vllm_config.model_config.hf_text_config
         quant_config = vllm_config.quant_config
         self.config = config
         self.quant_config = quant_config

vllm/model_executor/models/qwen3_next.py

@@ -17,7 +17,8 @@ from vllm.config import (CacheConfig, ModelConfig, SpeculativeConfig,
                          VllmConfig, get_current_vllm_config)
 from vllm.distributed import (divide, get_ep_group, get_pp_group,
                               get_tensor_model_parallel_rank,
-                              get_tensor_model_parallel_world_size)
+                              get_tensor_model_parallel_world_size,
+                              tensor_model_parallel_all_gather)
 from vllm.forward_context import ForwardContext, get_forward_context
 from vllm.logger import init_logger
 from vllm.model_executor.layers.fla.ops import (
@@ -47,6 +48,7 @@ from vllm.model_executor.layers.vocab_parallel_embedding import (
 from vllm.model_executor.model_loader.weight_utils import (
     default_weight_loader, sharded_weight_loader)
 from vllm.model_executor.models.qwen2_moe import Qwen2MoeMLP as Qwen3NextMLP
+from vllm.model_executor.models.utils import sequence_parallel_chunk
 from vllm.model_executor.utils import set_weight_attrs
 from vllm.platforms import current_platform
 from vllm.sequence import IntermediateTensors
@@ -69,14 +71,13 @@ KVCache = tuple[torch.Tensor, torch.Tensor]
 
 class Qwen3NextSparseMoeBlock(nn.Module):
 
-    def __init__(
+    def __init__(self, vllm_config: VllmConfig, prefix: str = ""):
-        self,
-        config: Qwen3NextConfig,
-        quant_config: Optional[QuantizationConfig] = None,
-        prefix: str = "",
-        enable_eplb: bool = False,
-    ):
         super().__init__()
+
+        config = vllm_config.model_config.hf_config
+        parallel_config = vllm_config.parallel_config
+        quant_config = vllm_config.quant_config
+
         self.tp_size = get_tensor_model_parallel_world_size()
 
         self.ep_group = get_ep_group().device_group
@@ -84,6 +85,8 @@ class Qwen3NextSparseMoeBlock(nn.Module):
         self.ep_size = self.ep_group.size()
         self.n_routed_experts = config.num_experts
 
+        self.is_sequence_parallel = parallel_config.use_sequence_parallel_moe
+
         if self.tp_size > config.num_experts:
             raise ValueError(
                 f"Tensor parallel size {self.tp_size} is greater than "
@@ -92,7 +95,7 @@ class Qwen3NextSparseMoeBlock(nn.Module):
         # Load balancing settings.
         vllm_config = get_current_vllm_config()
         eplb_config = vllm_config.parallel_config.eplb_config
-        self.enable_eplb = enable_eplb
+        self.enable_eplb = parallel_config.enable_eplb
 
         self.n_logical_experts = self.n_routed_experts
         self.n_redundant_experts = eplb_config.num_redundant_experts
@@ -114,7 +117,8 @@ class Qwen3NextSparseMoeBlock(nn.Module):
                                 quant_config=quant_config,
                                 prefix=f"{prefix}.experts",
                                 enable_eplb=self.enable_eplb,
-                                num_redundant_experts=self.n_redundant_experts)
+                                num_redundant_experts=self.n_redundant_experts,
+                                is_sequence_parallel=self.is_sequence_parallel)
 
         self.gate = ReplicatedLinear(config.hidden_size,
                                      config.num_experts,
@@ -141,9 +145,12 @@ class Qwen3NextSparseMoeBlock(nn.Module):
     def forward(self, hidden_states: torch.Tensor) -> torch.Tensor:
         # NOTE: hidden_states can have either 1D or 2D shape.
         orig_shape = hidden_states.shape
-        hidden_dim = hidden_states.shape[-1]
+        num_tokens, hidden_dim = hidden_states.shape
         hidden_states = hidden_states.view(-1, hidden_dim)
 
+        if self.is_sequence_parallel:
+            hidden_states = sequence_parallel_chunk(hidden_states)
+
         shared_output = None
         if self.shared_expert is not None:
             shared_output = self.shared_expert(hidden_states)
@@ -158,7 +165,12 @@ class Qwen3NextSparseMoeBlock(nn.Module):
 
         if shared_output is not None:
             final_hidden_states = final_hidden_states + shared_output
-        if self.tp_size > 1:
+
+        if self.is_sequence_parallel:
+            final_hidden_states = tensor_model_parallel_all_gather(
+                final_hidden_states, 0)
+            final_hidden_states = final_hidden_states[:num_tokens]
+        elif self.tp_size > 1:
             final_hidden_states = self.experts.maybe_all_reduce_tensor_model_parallel(  # noqa E501
                 final_hidden_states)
 
@@ -719,17 +731,17 @@ class Qwen3NextDecoderLayer(nn.Module):
 
     def __init__(
         self,
-        config: Qwen3NextConfig,
+        vllm_config: VllmConfig,
         layer_type: str,
-        model_config: Optional[ModelConfig] = None,
-        cache_config: Optional[CacheConfig] = None,
-        quant_config: Optional[QuantizationConfig] = None,
-        speculative_config: Optional[SpeculativeConfig] = None,
         prefix: str = "",
-        enable_eplb: bool = False,
     ) -> None:
         super().__init__()
-        self.config = config
+
+        config = vllm_config.model_config.hf_config
+        model_config = vllm_config.model_config
+        cache_config = vllm_config.cache_config
+        quant_config = vllm_config.quant_config
+        speculative_config = vllm_config.speculative_config
 
         self.layer_type = layer_type
         self.layer_idx = extract_layer_index(prefix)
@@ -759,10 +771,8 @@ class Qwen3NextDecoderLayer(nn.Module):
                 config.num_experts > 0 and
             (self.layer_idx + 1) % config.decoder_sparse_step == 0):
             self.mlp = Qwen3NextSparseMoeBlock(
-                config=config,
+                vllm_config=vllm_config,
-                quant_config=quant_config,
                 prefix=f"{prefix}.mlp",
-                enable_eplb=enable_eplb,
             )
         else:
             self.mlp = Qwen3NextMLP(
@@ -783,14 +793,14 @@ class Qwen3NextDecoderLayer(nn.Module):
                 torch.zeros(
                     1,
                     1,
-                    self.config.hidden_size,
+                    config.hidden_size,
                     dtype=config.torch_dtype,
                 ), )
             self.ffn_layer_scale = torch.nn.Parameter(
                 torch.zeros(
                     1,
                     1,
-                    self.config.hidden_size,
+                    config.hidden_size,
                     dtype=config.torch_dtype,
                 ), )
 
@@ -858,13 +868,8 @@ class Qwen3NextModel(nn.Module):
         super().__init__()
 
         config: Qwen3NextConfig = vllm_config.model_config.hf_config
-        model_config = vllm_config.model_config
-        cache_config = vllm_config.cache_config
-        quant_config = vllm_config.quant_config
         parallel_config = vllm_config.parallel_config
         lora_config = vllm_config.lora_config
-        speculative_config = vllm_config.speculative_config
-        enable_eplb = parallel_config.enable_eplb
         eplb_config = parallel_config.eplb_config
         self.num_redundant_experts = eplb_config.num_redundant_experts
 
@@ -881,14 +886,9 @@ class Qwen3NextModel(nn.Module):
 
         def get_layer(prefix: str):
             return Qwen3NextDecoderLayer(
-                config,
+                vllm_config,
                 layer_type=config.layer_types[extract_layer_index(prefix)],
-                model_config=model_config,
-                cache_config=cache_config,
-                quant_config=quant_config,
-                speculative_config=speculative_config,
                 prefix=prefix,
-                enable_eplb=enable_eplb,
             )
 
         self.start_layer, self.end_layer, self.layers = make_layers(

vllm/model_executor/models/qwen3_next_mtp.py

@@ -38,7 +38,6 @@ class Qwen3NextMultiTokenPredictor(nn.Module):
         super().__init__()
 
         model_config = vllm_config.model_config
-        cache_config = vllm_config.cache_config
         quant_config = vllm_config.quant_config
         lora_config = vllm_config.lora_config
         config: Qwen3NextConfig = model_config.hf_config
@@ -68,11 +67,8 @@ class Qwen3NextMultiTokenPredictor(nn.Module):
 
         self.layers = torch.nn.ModuleList(
             Qwen3NextDecoderLayer(
-                config,
+                vllm_config,
                 layer_type="full_attention",
-                model_config=model_config,
-                cache_config=cache_config,
-                quant_config=quant_config,
                 prefix=f'{prefix}.layers.{idx}',
             ) for idx in range(self.num_mtp_layers))
 

vllm/model_executor/models/qwen3_vl.py

@@ -33,11 +33,14 @@ import torch.nn as nn
 import torch.nn.functional as F
 from transformers import BatchFeature
 from transformers.models.qwen2_vl import Qwen2VLImageProcessorFast
-from transformers.models.qwen2_vl.image_processing_qwen2_vl import smart_resize
+from transformers.models.qwen2_vl.image_processing_qwen2_vl import (
+    smart_resize as image_smart_resize)
 from transformers.models.qwen3_vl import (Qwen3VLProcessor,
                                           Qwen3VLVideoProcessor)
 from transformers.models.qwen3_vl.configuration_qwen3_vl import (
     Qwen3VLConfig, Qwen3VLVisionConfig)
+from transformers.models.qwen3_vl.video_processing_qwen3_vl import (
+    smart_resize as video_smart_resize)
 from transformers.video_utils import VideoMetadata
 
 from vllm.attention.layer import check_upstream_fa_availability
@@ -63,7 +66,7 @@ from vllm.multimodal.processing import (BaseMultiModalProcessor,
                                         PromptReplacement, PromptUpdate,
                                         PromptUpdateDetails)
 from vllm.multimodal.profiling import BaseDummyInputsBuilder
-from vllm.platforms import _Backend
+from vllm.platforms import _Backend, current_platform
 from vllm.sequence import IntermediateTensors
 from vllm.transformers_utils.config import uses_mrope
 from vllm.utils import is_list_of
@@ -84,6 +87,9 @@ from .vision import get_vit_attn_backend, run_dp_sharded_mrope_vision_model
 
 logger = init_logger(__name__)
 
+# Official recommended max pixels is 24576 * 32 * 32
+_MAX_FRAMES_PER_VIDEO = 24576
+
 
 class Qwen3_VisionPatchEmbed(nn.Module):
 
@@ -158,6 +164,8 @@ class Qwen3_VisionBlock(nn.Module):
         quant_config: Optional[QuantizationConfig] = None,
         prefix: str = "",
         use_data_parallel: bool = False,
+        attn_backend: _Backend = _Backend.TORCH_SDPA,
+        use_upstream_fa: bool = False,
     ) -> None:
         super().__init__()
         if norm_layer is None:
@@ -170,7 +178,9 @@ class Qwen3_VisionBlock(nn.Module):
             projection_size=dim,
             quant_config=quant_config,
             prefix=f"{prefix}.attn",
-            use_data_parallel=use_data_parallel)
+            use_data_parallel=use_data_parallel,
+            attn_backend=attn_backend,
+            use_upstream_fa=use_upstream_fa)
         self.mlp = Qwen3_VisionMLP(dim,
                                    mlp_hidden_dim,
                                    act_fn=act_fn,
@@ -287,19 +297,6 @@ class Qwen3_VisionTransformer(nn.Module):
         head_dim = self.hidden_size // self.num_heads
         self.rotary_pos_emb = Qwen2_5_VisionRotaryEmbedding(head_dim // 2)
 
-        self.blocks = nn.ModuleList([
-            Qwen3_VisionBlock(
-                dim=self.hidden_size,
-                num_heads=self.num_heads,
-                mlp_hidden_dim=vision_config.intermediate_size,
-                act_fn=_ACTIVATION_REGISTRY[vision_config.hidden_act],
-                norm_layer=norm_layer,
-                quant_config=quant_config,
-                prefix=f"{prefix}.blocks.{layer_idx}",
-                use_data_parallel=use_data_parallel)
-            for layer_idx in range(vision_config.depth)
-        ])
-
         self.merger = Qwen3_VisionPatchMerger(
             d_model=vision_config.out_hidden_size,
             context_dim=self.hidden_size,
@@ -325,10 +322,42 @@ class Qwen3_VisionTransformer(nn.Module):
 
         self.attn_backend = get_vit_attn_backend(
             head_size=head_dim, dtype=torch.get_default_dtype())
+        use_upstream_fa = False
         if self.attn_backend != _Backend.FLASH_ATTN and \
             check_upstream_fa_availability(
                 torch.get_default_dtype()):
             self.attn_backend = _Backend.FLASH_ATTN
+            use_upstream_fa = True
+
+        if self.attn_backend not in {
+                _Backend.FLASH_ATTN, _Backend.TORCH_SDPA, _Backend.XFORMERS,
+                _Backend.ROCM_AITER_FA
+        }:
+            raise RuntimeError(
+                f"Qwen3-VL does not support {self.attn_backend} backend now.")
+        if current_platform.is_device_capability(
+                100) and self.attn_backend != _Backend.TORCH_SDPA:
+            # TODO(Roger/Wentao): remove this after FA
+            # or XFORMERS's issue fixed on Blackwell
+            logger.info_once("Qwen3-VL vision attention does not support "
+                             f"{self.attn_backend} backend on Blackwell now. "
+                             "Vision attention backend is set to TORCH_SDPA.")
+            self.attn_backend = _Backend.TORCH_SDPA
+
+        self.blocks = nn.ModuleList([
+            Qwen3_VisionBlock(
+                dim=self.hidden_size,
+                num_heads=self.num_heads,
+                mlp_hidden_dim=vision_config.intermediate_size,
+                act_fn=_ACTIVATION_REGISTRY[vision_config.hidden_act],
+                norm_layer=norm_layer,
+                quant_config=quant_config,
+                prefix=f"{prefix}.blocks.{layer_idx}",
+                use_data_parallel=use_data_parallel,
+                attn_backend=self.attn_backend,
+                use_upstream_fa=use_upstream_fa)
+            for layer_idx in range(vision_config.depth)
+        ])
 
     @property
     def dtype(self) -> torch.dtype:
@@ -569,11 +598,16 @@ class Qwen3VLProcessingInfo(Qwen2VLProcessingInfo):
         image_height: int,
         num_frames: int = 2,
         do_resize: bool = True,
-        image_processor: Optional[Qwen2VLImageProcessorFast],
+        image_processor: Optional[Union[Qwen2VLImageProcessorFast,
+                                        Qwen3VLVideoProcessor]],
     ) -> tuple[ImageSize, int]:
-        if image_processor is None:
+        if image_processor is None and num_frames > 1:
+            image_processor = self.get_video_processor()
+        elif image_processor is None:
             image_processor = self.get_image_processor()
 
+        is_video = isinstance(image_processor, Qwen3VLVideoProcessor)
+
         hf_config = self.get_hf_config()
         vision_config = hf_config.vision_config
         patch_size = vision_config.patch_size
@@ -581,12 +615,22 @@ class Qwen3VLProcessingInfo(Qwen2VLProcessingInfo):
         temporal_patch_size = vision_config.temporal_patch_size
 
         if do_resize:
+            if is_video:
+                smart_resize = video_smart_resize
+                extra_kwargs = {
+                    "num_frames": num_frames,
+                    "temporal_factor": temporal_patch_size
+                }
+            else:
+                smart_resize = image_smart_resize
+                extra_kwargs = {}
             resized_height, resized_width = smart_resize(
                 height=image_height,
                 width=image_width,
                 factor=patch_size * merge_size,
                 min_pixels=image_processor.size["shortest_edge"],
                 max_pixels=image_processor.size["longest_edge"],
+                **extra_kwargs,
             )
             preprocessed_size = ImageSize(width=resized_width,
                                           height=resized_height)
@@ -605,6 +649,39 @@ class Qwen3VLProcessingInfo(Qwen2VLProcessingInfo):
 
         return preprocessed_size, num_vision_tokens
 
+    def _get_max_video_frames(self,
+                              max_tokens: int,
+                              start_num_frames: int = 2) -> int:
+        return super()._get_max_video_frames(max_tokens,
+                                             start_num_frames=start_num_frames)
+
+    def get_num_frames_with_most_features(
+        self,
+        seq_len: int,
+        mm_counts: Mapping[str, int],
+    ) -> int:
+        return super().get_num_frames_with_most_features(
+            seq_len, mm_counts, max_frames_per_video=_MAX_FRAMES_PER_VIDEO)
+
+    def get_max_video_tokens(
+        self,
+        seq_len: int,
+        mm_counts: Mapping[str, int],
+    ) -> int:
+        target_width, target_height = self.get_image_size_with_most_features()
+        video_soft_tokens = self.get_num_video_tokens(
+            image_width=target_width,
+            image_height=target_height,
+            num_frames=self.get_num_frames_with_most_features(
+                seq_len, mm_counts),
+            image_processor=None,
+        )
+
+        # NOTE: By default in Qwen3-VL, one video token is converted to
+        # "<{timestamp} seconds>" (on average 9.5 tokens) + vision_start_token + video_token + vision_end_token # noqa: E501
+        formatted_video_soft_tokens = video_soft_tokens * 12.5
+        return int(formatted_video_soft_tokens)
+
     def _calculate_timestamps(self, indices: list[int] | torch.Tensor,
                               video_fps: float, merge_size: int):
         if not isinstance(indices, list):
@@ -674,6 +751,12 @@ class Qwen3VLDummyInputsBuilder(BaseDummyInputsBuilder[Qwen3VLProcessingInfo]):
             self.info.get_image_size_with_most_features())
         target_num_frames = self.info.get_num_frames_with_most_features(
             seq_len, mm_counts)
+        target_video_size, _ = self.info._get_vision_info(
+            image_width=target_width,
+            image_height=target_height,
+            num_frames=target_num_frames,
+            image_processor=self.info.get_video_processor(),
+        )
         return {
             "image":
             self._get_dummy_images(width=target_width,
@@ -681,8 +764,8 @@ class Qwen3VLDummyInputsBuilder(BaseDummyInputsBuilder[Qwen3VLProcessingInfo]):
                                    num_images=num_images),
             "video":
             self._get_dummy_videos(
-                width=target_width,
+                width=target_video_size.width,
-                height=target_height,
+                height=target_video_size.height,
                 num_frames=target_num_frames,
                 num_videos=num_videos,
             ),

vllm/model_executor/models/qwen3_vl_moe.py

@@ -212,6 +212,8 @@ class Qwen3MoeLLMModel(Qwen3MoeModel):
                     # attempted to load as other weights later
                     is_expert_weight = True
                     name_mapped = name.replace(weight_name, param_name)
+                    if is_pp_missing_parameter(name_mapped, self):
+                        continue
                     if is_fused_expert:
                         loaded_weight = loaded_weight.transpose(-1,
                                                                 -2)  # no bias
@@ -230,8 +232,6 @@ class Qwen3MoeLLMModel(Qwen3MoeModel):
                                 name_mapped, params_dict, loaded_weight,
                                 shard_id, num_experts)
                     else:
-                        if is_pp_missing_parameter(name_mapped, self):
-                            continue
                         # Skip loading extra parameters for GPTQ/modelopt models
                         if name_mapped.endswith(
                                 ignore_suffixes

vllm/model_executor/models/utils.py

@@ -13,11 +13,14 @@ from transformers import PretrainedConfig
 
 import vllm.envs as envs
 from vllm.config import VllmConfig
+from vllm.distributed import (get_tensor_model_parallel_rank,
+                              get_tensor_model_parallel_world_size)
 from vllm.logger import init_logger
 from vllm.model_executor.model_loader.weight_utils import default_weight_loader
 from vllm.multimodal import NestedTensors
 from vllm.sequence import IntermediateTensors
-from vllm.utils import (get_cuda_view_from_cpu_tensor, is_pin_memory_available,
+from vllm.utils import (cdiv, direct_register_custom_op,
+                        get_cuda_view_from_cpu_tensor, is_pin_memory_available,
                         is_uva_available)
 
 logger = init_logger(__name__)
@@ -760,3 +763,46 @@ def get_model_hidden_size(hf_config: PretrainedConfig) -> int:
         return hf_config.hidden_size
     text_config = hf_config.get_text_config()
     return text_config.hidden_size
+
+
+# Chunk x along the num_tokens axis for sequence parallelism
+# NOTE: This is wrapped in a torch custom op to work around the following issue:
+# The output tensor can have a sequence length 0 at small input sequence lengths
+# even though we explicitly pad to avoid this.
+def sequence_parallel_chunk(x: torch.Tensor) -> torch.Tensor:
+    return torch.ops.vllm.sequence_parallel_chunk_impl(x)
+
+
+def sequence_parallel_chunk_impl(x: torch.Tensor) -> torch.Tensor:
+    tp_size = get_tensor_model_parallel_world_size()
+    tp_rank = get_tensor_model_parallel_rank()
+
+    # all_gather needs the sequence length to be divisible by tp_size
+    seq_len = x.size(0)
+    remainder = seq_len % tp_size
+    if remainder != 0:
+        pad_len = tp_size - remainder
+        y = nn.functional.pad(x, (0, 0, 0, pad_len))
+    else:
+        y = x
+
+    chunk = y.shape[0] // tp_size
+    start = tp_rank * chunk
+    return torch.narrow(y, 0, start, chunk)
+
+
+def sequence_parallel_chunk_impl_fake(x: torch.Tensor) -> torch.Tensor:
+    tp_size = get_tensor_model_parallel_world_size()
+    seq_len = cdiv(x.size(0), tp_size)
+    shape = list(x.shape)
+    shape[0] = seq_len
+    out = torch.empty(shape, dtype=x.dtype, device=x.device)
+    return out
+
+
+direct_register_custom_op(
+    op_name="sequence_parallel_chunk_impl",
+    op_func=sequence_parallel_chunk_impl,
+    fake_impl=sequence_parallel_chunk_impl_fake,
+    tags=(torch.Tag.needs_fixed_stride_order, ),
+)

vllm/multimodal/utils.py

@@ -50,6 +50,7 @@ class MediaConnector:
         connection: HTTPConnection = global_http_connection,
         *,
         allowed_local_media_path: str = "",
+        allowed_media_domains: Optional[list[str]] = None,
     ) -> None:
         """
         Args:
@@ -82,6 +83,9 @@ class MediaConnector:
             allowed_local_media_path_ = None
 
         self.allowed_local_media_path = allowed_local_media_path_
+        if allowed_media_domains is None:
+            allowed_media_domains = []
+        self.allowed_media_domains = allowed_media_domains
 
     def _load_data_url(
         self,
@@ -115,6 +119,14 @@ class MediaConnector:
 
         return media_io.load_file(filepath)
 
+    def _assert_url_in_allowed_media_domains(self, url_spec) -> None:
+        if self.allowed_media_domains and url_spec.hostname not in \
+            self.allowed_media_domains:
+            raise ValueError(
+                f"The URL must be from one of the allowed domains: "
+                f"{self.allowed_media_domains}. Input URL domain: "
+                f"{url_spec.hostname}")
+
     def load_from_url(
         self,
         url: str,
@@ -125,6 +137,8 @@ class MediaConnector:
         url_spec = urlparse(url)
 
         if url_spec.scheme.startswith("http"):
+            self._assert_url_in_allowed_media_domains(url_spec)
+
             connection = self.connection
             data = connection.get_bytes(url, timeout=fetch_timeout)
 
@@ -150,6 +164,8 @@ class MediaConnector:
         loop = asyncio.get_running_loop()
 
         if url_spec.scheme.startswith("http"):
+            self._assert_url_in_allowed_media_domains(url_spec)
+
             connection = self.connection
             data = await connection.async_get_bytes(url, timeout=fetch_timeout)
             future = loop.run_in_executor(global_thread_pool,

vllm/v1/core/sched/scheduler.py

@@ -1288,4 +1288,9 @@ class Scheduler(SchedulerInterface):
             self.finished_recving_kv_req_ids.add(req_id)
         for req_id in (kv_connector_output.finished_sending or ()):
             logger.debug("Finished sending KV transfer for request %s", req_id)
-            self._free_blocks(self.requests[req_id])
+            if req_id not in self.requests:
+                logger.warning(
+                    "Got finished sending KV transfer for request %s,"
+                    "but the request is already freed.", req_id)
+            else:
+                self._free_blocks(self.requests[req_id])

vllm/v1/worker/gpu_model_runner.py

@@ -3351,6 +3351,23 @@ class GPUModelRunner(LoRAModelRunnerMixin, KVConnectorModelRunnerMixin):
                         expected_num_items=max_mm_items_per_batch,
                     )
 
+                    # NOTE: This happens when encoder cache needs to store
+                    # the embeddings that encoder outputs are scattered onto.
+                    # In this case we create dummy embeddings of size
+                    # (encode_budget, hidden_size) and scatter encoder
+                    # output into it.
+                    encoder_output_shape = dummy_encoder_outputs[0].shape
+                    if encoder_output_shape[0] < encoder_budget:
+                        expanded_outputs = []
+                        for output in dummy_encoder_outputs:
+                            expanded = output.new_zeros(
+                                (encoder_budget, encoder_output_shape[-1]))
+                            num_tokens = output.shape[0]
+                            expanded[:num_tokens].copy_(output)
+                            expanded_outputs.append(expanded)
+
+                        dummy_encoder_outputs = expanded_outputs
+
                     # Cache the dummy encoder outputs.
                     self.encoder_cache["tmp"] = dict(
                         enumerate(dummy_encoder_outputs))
@@ -3468,8 +3485,10 @@ class GPUModelRunner(LoRAModelRunnerMixin, KVConnectorModelRunnerMixin):
         # We skip EPLB here since we don't want to record dummy metrics
         for num_tokens in compilation_cases:
             # We currently only capture ubatched graphs when its a FULL
-            # cudagraph and for uniform decode batches.
+            # cudagraph, a uniform decode batch, and the number of tokens
-            capture_ubatched_graph = self.parallel_config.enable_dbo \
+            # is above the threshold. Otherwise we just capture a non-ubatched
+            # version of the graph
+            allow_microbatching = self.parallel_config.enable_dbo \
                 and cudagraph_runtime_mode == CUDAGraphMode.FULL \
                 and uniform_decode \
                 and check_ubatch_thresholds(
@@ -3478,37 +3497,27 @@ class GPUModelRunner(LoRAModelRunnerMixin, KVConnectorModelRunnerMixin):
                     uniform_decode=uniform_decode,
                 )
 
-            # Currently we capture both microbatched and non-microbatched
+            for _ in range(self.compilation_config.cudagraph_num_of_warmups):
-            # graphs when capture_ubatched_graph is True, this is because
+                # Use CUDAGraphRuntimeStyle.NONE (default) for warmup.
-            # occasionally we will be forced out of microbatching due to other
+                # But be careful, warm up with `NONE`is orthogonal to
-            # DP ranks not microbatching (usually caused by an empty second
+                # if we want to warm up attention or not. This is
-            # microbatch; once we resolve this, we can remove the
+                # different from the case where `FULL` implies capture
-            # non-microbatched graph capture).
+                # attention while `PIECEWISE` implies no attention.
-            allow_microbatching_options = [True, False] if \
+                force_attention = (
-                capture_ubatched_graph else [False]
+                    cudagraph_runtime_mode == CUDAGraphMode.FULL)
-            for allow_microbatching in allow_microbatching_options:
-                for _ in range(
-                        self.compilation_config.cudagraph_num_of_warmups):
-                    # Use CUDAGraphRuntimeStyle.NONE (default) for warmup.
-                    # But be careful, warm up with `NONE`is orthogonal to
-                    # if we want to warm up attention or not. This is
-                    # different from the case where `FULL` implies capture
-                    # attention while `PIECEWISE` implies no attention.
-                    force_attention = (
-                        cudagraph_runtime_mode == CUDAGraphMode.FULL)
-                    self._dummy_run(num_tokens,
-                                    cudagraph_runtime_mode=CUDAGraphMode.NONE,
-                                    force_attention=force_attention,
-                                    uniform_decode=uniform_decode,
-                                    allow_microbatching=allow_microbatching,
-                                    skip_eplb=True,
-                                    remove_lora=False)
                 self._dummy_run(num_tokens,
-                                cudagraph_runtime_mode=cudagraph_runtime_mode,
+                                cudagraph_runtime_mode=CUDAGraphMode.NONE,
+                                force_attention=force_attention,
                                 uniform_decode=uniform_decode,
                                 allow_microbatching=allow_microbatching,
                                 skip_eplb=True,
                                 remove_lora=False)
+            self._dummy_run(num_tokens,
+                            cudagraph_runtime_mode=cudagraph_runtime_mode,
+                            uniform_decode=uniform_decode,
+                            allow_microbatching=allow_microbatching,
+                            skip_eplb=True,
+                            remove_lora=False)
         self.maybe_remove_all_loras(self.lora_config)
 
     def initialize_attn_backend(self, kv_cache_config: KVCacheConfig) -> None:

vllm/v1/worker/gpu_ubatch_wrapper.py

@@ -330,6 +330,18 @@ class UBatchWrapper:
 
         # If there's no ubatching, just run the runnable object
         if ubatch_slices is None:
+
+            # This is to account for the case where ubatching was aborted.
+            # When we capture full graphs we only capture one graph per shape,
+            # meaning that if we have a ubatched  cudagraph for the current
+            # num_tokens, we don't have a non-ubatched one. Without this
+            # check, the cudagraph wrapper will try to capture a cudagraph
+            # for this shape during a normal run.
+            if cudagraph_runtime_mode is CUDAGraphMode.FULL:
+                assert batch_descriptor is not None
+                if batch_descriptor.num_tokens in self.cudagraphs:
+                    cudagraph_runtime_mode = CUDAGraphMode.NONE
+
             if cudagraph_runtime_mode in (CUDAGraphMode.NONE,
                                           CUDAGraphMode.PIECEWISE):
                 return self.runnable(*args, **kwargs)