Support qwen2 vl model (#1721)

Co-authored-by: yizhang2077 <1109276519@qq.com>
Co-authored-by: ispobock <ISPObaoke@163.com>

.github/workflows/pr-test.yml

@@ -73,7 +73,7 @@ jobs:
           pip install flashinfer -i https://flashinfer.ai/whl/cu121/torch2.4/ --force-reinstall
 
       - name: Run test
-        timeout-minutes: 20
+        timeout-minutes: 30
         run: |
           cd test/srt
           python3 run_suite.py --suite minimal --range-begin 5 --range-end 17
@@ -93,7 +93,7 @@ jobs:
           pip install flashinfer -i https://flashinfer.ai/whl/cu121/torch2.4/ --force-reinstall
 
       - name: Run test
-        timeout-minutes: 20
+        timeout-minutes: 30
         run: |
           cd test/srt
           python3 run_suite.py --suite minimal --range-begin 17

python/sglang/lang/chat_template.py

@@ -133,6 +133,22 @@ register_chat_template(
     )
 )
 
+# Reference: https://huggingface.co/docs/transformers/main/model_doc/qwen2_vl#usage-example
+register_chat_template(
+    ChatTemplate(
+        name="qwen2-vl",
+        default_system_prompt="You are a helpful assistant.",
+        role_prefix_and_suffix={
+            "system": ("<|im_start|>system\n", "<|im_end|>\n"),
+            "user": ("<|im_start|>user\n", "<|im_end|>\n"),
+            "assistant": ("<|im_start|>assistant\n", "<|im_end|>\n"),
+        },
+        style=ChatTemplateStyle.PLAIN,
+        stop_str=("<|im_end|>"),
+        image_token="<|vision_start|><|image_pad|><|vision_end|>",
+    )
+)
+
 
 register_chat_template(
     ChatTemplate(

python/sglang/srt/configs/__init__.py

 from sglang.srt.configs.exaone import ExaoneConfig
+from sglang.srt.configs.qwen2vl import Qwen2VLConfig, Qwen2VLVisionConfig
 
 __all__ = [
     "ExaoneConfig",
+    "Qwen2VLConfig",
+    "Qwen2VLVisionConfig",
 ]

python/sglang/srt/configs/qwen2vl.py

+# coding=utf-8
+# Copyright 2024 The Qwen team, Alibaba Group and the HuggingFace Inc. team.
+# All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Qwen2VL model configuration"""
+
+import os
+from typing import Union
+
+from transformers import PretrainedConfig
+
+
+class Qwen2VLVisionConfig(PretrainedConfig):
+    model_type = "qwen2_vl"
+
+    def __init__(
+        self,
+        depth=32,
+        embed_dim=1280,
+        hidden_size=3584,
+        hidden_act="quick_gelu",
+        mlp_ratio=4,
+        num_heads=16,
+        in_channels=3,
+        patch_size=14,
+        spatial_merge_size=2,
+        temporal_patch_size=2,
+        **kwargs,
+    ):
+        super().__init__(**kwargs)
+
+        self.depth = depth
+        self.embed_dim = embed_dim
+        self.hidden_size = hidden_size
+        self.hidden_act = hidden_act
+        self.mlp_ratio = mlp_ratio
+        self.num_heads = num_heads
+        self.in_channels = in_channels
+        self.patch_size = patch_size
+        self.spatial_merge_size = spatial_merge_size
+        self.temporal_patch_size = temporal_patch_size
+
+    @classmethod
+    def from_pretrained(
+        cls, pretrained_model_name_or_path: Union[str, os.PathLike], **kwargs
+    ) -> "PretrainedConfig":
+        cls._set_token_in_kwargs(kwargs)
+
+        config_dict, kwargs = cls.get_config_dict(
+            pretrained_model_name_or_path, **kwargs
+        )
+
+        if config_dict.get("model_type") == "qwen2_vl":
+            config_dict = config_dict["vision_config"]
+
+        return cls.from_dict(config_dict, **kwargs)
+
+
+class Qwen2VLConfig(PretrainedConfig):
+    model_type = "qwen2_vl"
+
+    def __init__(
+        self,
+        vocab_size=152064,
+        hidden_size=8192,
+        intermediate_size=29568,
+        num_hidden_layers=80,
+        num_attention_heads=64,
+        num_key_value_heads=8,
+        hidden_act="silu",
+        max_position_embeddings=32768,
+        initializer_range=0.02,
+        rms_norm_eps=1e-05,
+        use_cache=True,
+        tie_word_embeddings=False,
+        rope_theta=1000000.0,
+        use_sliding_window=False,
+        sliding_window=4096,
+        max_window_layers=80,
+        attention_dropout=0.0,
+        vision_config=None,
+        rope_scaling=None,
+        **kwargs,
+    ):
+        if isinstance(vision_config, dict):
+            self.vision_config = Qwen2VLVisionConfig(**vision_config)
+        elif vision_config is None:
+            self.vision_config = Qwen2VLVisionConfig()
+
+        self.vocab_size = vocab_size
+        self.max_position_embeddings = max_position_embeddings
+        self.hidden_size = hidden_size
+        self.intermediate_size = intermediate_size
+        self.num_hidden_layers = num_hidden_layers
+        self.num_attention_heads = num_attention_heads
+        self.use_sliding_window = use_sliding_window
+        self.sliding_window = sliding_window
+        self.max_window_layers = max_window_layers
+
+        # for backward compatibility
+        if num_key_value_heads is None:
+            num_key_value_heads = num_attention_heads
+
+        self.num_key_value_heads = num_key_value_heads
+        self.hidden_act = hidden_act
+        self.initializer_range = initializer_range
+        self.rms_norm_eps = rms_norm_eps
+        self.use_cache = use_cache
+        self.rope_theta = rope_theta
+        self.attention_dropout = attention_dropout
+        self.rope_scaling = rope_scaling
+
+        # NOTE: the following section from original transformers config
+        # for Qwen2-VL is commented out to address rope config loading issue
+        #
+        # if self.rope_scaling is not None and "type" in self.rope_scaling:
+        #     if self.rope_scaling["type"] == "mrope":
+        #         self.rope_scaling["type"] = "default"
+        #     self.rope_scaling["rope_type"] = self.rope_scaling["type"]
+        # rope_config_validation(self)
+
+        super().__init__(tie_word_embeddings=tie_word_embeddings, **kwargs)

python/sglang/srt/conversation.py

@@ -530,3 +530,17 @@ register_conv_template(
         stop_str=["<|im_end|>", "<|action_end|>"],
     )
 )
+
+# Reference: https://huggingface.co/docs/transformers/main/model_doc/qwen2_vl#usage-example
+register_conv_template(
+    Conversation(
+        name="qwen2-vl",
+        system_message="You are a helpful assistant.",
+        system_template="<|im_start|>system\n{system_message}",
+        roles=("<|im_start|>user", "<|im_start|>assistant"),
+        sep="<|im_end|>\n",
+        sep_style=SeparatorStyle.ADD_NEW_LINE_SINGLE,
+        stop_str=["<|im_end|>"],
+        image_token="<|vision_start|><|image_pad|><|vision_end|>",
+    )
+)

python/sglang/srt/hf_transformers_utils.py

@@ -33,12 +33,13 @@ from transformers import (
 try:
     from vllm.transformers_utils.configs import ChatGLMConfig, DbrxConfig
 
-    from sglang.srt.configs import ExaoneConfig
+    from sglang.srt.configs import ExaoneConfig, Qwen2VLConfig
 
     _CONFIG_REGISTRY: Dict[str, Type[PretrainedConfig]] = {
         ChatGLMConfig.model_type: ChatGLMConfig,
         DbrxConfig.model_type: DbrxConfig,
         ExaoneConfig.model_type: ExaoneConfig,
+        Qwen2VLConfig.model_type: Qwen2VLConfig,
     }
 except ImportError:
     # We want this file to run without vllm dependency

python/sglang/srt/layers/attention/triton_ops/prefill_attention.py

@@ -50,6 +50,7 @@ def _fwd_kernel(
     BLOCK_M: tl.constexpr,
     BLOCK_DMODEL: tl.constexpr,
     BLOCK_N: tl.constexpr,
+    IS_CAUSAL: tl.constexpr,
     Lk: tl.constexpr,
 ):
     cur_batch = tl.program_id(0)
@@ -78,7 +79,9 @@ def _fwd_kernel(
     mask_d = offs_d < Lk
 
     q = tl.load(
-        Q + off_q, mask=(offs_m[:, None] < cur_batch_seq_len) & (mask_d), other=0.0
+        Q + off_q,
+        mask=(offs_m[:, None] < cur_batch_seq_len) & (mask_d[None, :]),
+        other=0.0,
     )
 
     k_ptrs = K + off_k
@@ -91,7 +94,12 @@ def _fwd_kernel(
 
     block_mask = tl.where(block_start_loc < cur_batch_seq_len, 1, 0)
 
-    for start_n in range(0, block_mask * (start_m + 1) * BLOCK_M, BLOCK_N):
+    end_n = (
+        cur_batch_seq_len
+        if not IS_CAUSAL
+        else tl.minimum((start_m + 1) * BLOCK_M, cur_batch_seq_len)
+    )
+    for start_n in range(0, block_mask * end_n, BLOCK_N):
         start_n = tl.multiple_of(start_n, BLOCK_N)
         # -- compute qk ----
         k = tl.load(
@@ -104,7 +112,18 @@ def _fwd_kernel(
         qk = tl.zeros([BLOCK_M, BLOCK_N], dtype=tl.float32)
         qk += tl.dot(q, k)
         qk *= sm_scale
-        qk = tl.where(offs_m[:, None] >= (start_n + offs_n[None, :]), qk, float("-inf"))
+
+        if IS_CAUSAL:
+            qk += tl.where(
+                (start_n + offs_n[None, :] < cur_batch_seq_len)
+                & (offs_m[:, None] >= (start_n + offs_n[None, :])),
+                0,
+                float("-inf"),
+            )
+        else:
+            qk += tl.where(
+                (start_n + offs_n[None, :]) < cur_batch_seq_len, 0, float("-inf")
+            )
 
         # -- compute m_ij, p, l_ij
         m_ij = tl.max(qk, 1)
@@ -146,7 +165,9 @@ def _fwd_kernel(
     )
 
 
-def context_attention_fwd(q, k, v, o, b_start_loc, b_seq_len, max_input_len):
+def context_attention_fwd(
+    q, k, v, o, b_start_loc, b_seq_len, max_input_len, is_causal=True
+):
     if is_cuda_available and CUDA_CAPABILITY[0] >= 8:
         BLOCK = 128
     else:
@@ -181,6 +202,7 @@ def context_attention_fwd(q, k, v, o, b_start_loc, b_seq_len, max_input_len):
         BLOCK_M=BLOCK,
         BLOCK_DMODEL=triton.next_power_of_2(Lk),
         BLOCK_N=BLOCK,
+        IS_CAUSAL=is_causal,
         num_warps=num_warps,
         num_stages=1,
         Lk=Lk,

python/sglang/srt/layers/rotary_embedding.py

+"""
+Copyright 2023-2024 SGLang Team
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+"""
+
+"""MRotaryEmbedding"""
+from typing import Any, Dict, List, Optional, Tuple, Union
+
+import torch
+
+
+class MRotaryEmbedding:
+    """Rotary Embedding with Multimodal Sections."""
+
+    @staticmethod
+    def get_input_positions(
+        input_tokens: List[int],
+        image_grid_thw: Union[List[List[int]], torch.Tensor],
+        video_grid_thw: Union[List[List[int]], torch.Tensor],
+        image_token_id: int,
+        video_token_id: int,
+        vision_start_token_id: int,
+        vision_end_token_id: int,
+        spatial_merge_size: int,
+        context_len: int = 0,
+        extend_prefix_len: int = 0,
+    ) -> Tuple[List[List[int]], int]:
+        """Get mrope input positions and delta value."""
+
+        if isinstance(image_grid_thw, torch.Tensor):
+            image_grid_thw = image_grid_thw.tolist()
+        if isinstance(video_grid_thw, torch.Tensor):
+            video_grid_thw = video_grid_thw.tolist()
+
+        input_tokens_tensor = torch.tensor(input_tokens)
+        vision_start_indices = torch.argwhere(
+            input_tokens_tensor == vision_start_token_id
+        ).squeeze(1)
+        vision_tokens = input_tokens_tensor[vision_start_indices + 1]
+        image_nums = (vision_tokens == image_token_id).sum()
+        video_nums = (vision_tokens == video_token_id).sum()
+        llm_pos_ids_list: list = []
+
+        st = 0
+        remain_images, remain_videos = image_nums, video_nums
+
+        image_index, video_index = 0, 0
+        for _ in range(image_nums + video_nums):
+            if image_token_id in input_tokens and remain_images > 0:
+                ed_image = input_tokens.index(image_token_id, st)
+            else:
+                ed_image = len(input_tokens) + 1
+            if video_token_id in input_tokens and remain_videos > 0:
+                ed_video = input_tokens.index(video_token_id, st)
+            else:
+                ed_video = len(input_tokens) + 1
+            if ed_image < ed_video:
+                t, h, w = (
+                    image_grid_thw[image_index][0],
+                    image_grid_thw[image_index][1],
+                    image_grid_thw[image_index][2],
+                )
+                image_index += 1
+                remain_images -= 1
+                ed = ed_image
+            else:
+                t, h, w = (
+                    video_grid_thw[video_index][0],
+                    video_grid_thw[video_index][1],
+                    video_grid_thw[video_index][2],
+                )
+                video_index += 1
+                remain_videos -= 1
+                ed = ed_video
+            llm_grid_t, llm_grid_h, llm_grid_w = (
+                t,
+                h // spatial_merge_size,
+                w // spatial_merge_size,
+            )
+            text_len = ed - st
+
+            st_idx = llm_pos_ids_list[-1].max() + 1 if len(llm_pos_ids_list) > 0 else 0
+            llm_pos_ids_list.append(
+                torch.arange(text_len).view(1, -1).expand(3, -1) + st_idx
+            )
+
+            t_index = (
+                torch.arange(llm_grid_t)
+                .view(-1, 1)
+                .expand(-1, llm_grid_h * llm_grid_w)
+                .flatten()
+            )
+            h_index = (
+                torch.arange(llm_grid_h)
+                .view(1, -1, 1)
+                .expand(llm_grid_t, -1, llm_grid_w)
+                .flatten()
+            )
+            w_index = (
+                torch.arange(llm_grid_w)
+                .view(1, 1, -1)
+                .expand(llm_grid_t, llm_grid_h, -1)
+                .flatten()
+            )
+            llm_pos_ids_list.append(
+                torch.stack([t_index, h_index, w_index]) + text_len + st_idx
+            )
+            st = ed + llm_grid_t * llm_grid_h * llm_grid_w
+
+        if st < len(input_tokens):
+            st_idx = llm_pos_ids_list[-1].max() + 1 if len(llm_pos_ids_list) > 0 else 0
+            text_len = len(input_tokens) - st
+            llm_pos_ids_list.append(
+                torch.arange(text_len).view(1, -1).expand(3, -1) + st_idx
+            )
+
+        llm_positions = torch.cat(llm_pos_ids_list, dim=1).reshape(3, -1)
+        llm_positions = llm_positions[:, context_len:]
+        mrope_position_delta = (llm_positions.max() + 1 - len(input_tokens)).item()
+        llm_positions += extend_prefix_len
+
+        return llm_positions.tolist(), mrope_position_delta
+
+    @staticmethod
+    def get_next_input_positions(
+        mrope_position_delta: int,
+        context_len: int,
+        seq_len: int,
+    ) -> List[List[int]]:
+        return [
+            list(
+                range(
+                    context_len + mrope_position_delta, seq_len + mrope_position_delta
+                )
+            )
+            for _ in range(3)
+        ]

python/sglang/srt/managers/image_processor.py

@@ -177,10 +177,127 @@ class LlavaImageProcessor(BaseImageProcessor):
         }
 
 
+class Qwen2VLImageProcessor(BaseImageProcessor):
+    def __init__(self, hf_config, server_args, _image_processor):
+        self.hf_config = hf_config
+        self._image_processor = _image_processor
+        self.executor = concurrent.futures.ProcessPoolExecutor(
+            initializer=init_global_processor,
+            mp_context=mp.get_context("fork"),
+            initargs=(server_args,),
+            max_workers=os.environ.get("SGLANG_CPU_COUNT", os.cpu_count()),
+        )
+
+    @staticmethod
+    def _process_single_image_task(
+        image_data: Union[str, bytes],
+        image_processor=None,
+    ):
+        image_processor = image_processor or global_processor.image_processor
+
+        try:
+            image, image_size = load_image(image_data)
+            if image_size is not None:
+                # It is a video with multiple images
+                image_hash = hash(image_data)
+                process_result = image_processor(image)
+                pixel_values, image_grid_thws = (
+                    process_result["pixel_values"],
+                    process_result["image_grid_thw"][0],
+                )
+                for _ in range(len(pixel_values)):
+                    pixel_values[_] = pixel_values[_].astype(np.float16)
+                pixel_values = np.stack(pixel_values, axis=0)
+                image_grid_thws = np.stack(image_grid_thws, axis=0)
+                return pixel_values, image_hash, image_size, image_grid_thws
+            else:
+                # It is an image
+                image_hash = hash(image_data)
+                process_result = image_processor(image)
+                pixel_values, image_grid_thws = (
+                    process_result["pixel_values"],
+                    process_result["image_grid_thw"][0],
+                )
+                if isinstance(pixel_values, np.ndarray):
+                    pixel_values = pixel_values.astype(np.float16)
+
+                return pixel_values, image_hash, image.size, image_grid_thws
+        except Exception:
+            logger.error("Exception in TokenizerManager:\n" + get_exception_traceback())
+
+    async def _process_single_image(self, image_data: Union[bytes, str]):
+        if self.executor is not None:
+            loop = asyncio.get_event_loop()
+            return await loop.run_in_executor(
+                self.executor,
+                Qwen2VLImageProcessor._process_single_image_task,
+                image_data,
+            )
+        else:
+            return self._process_single_image_task(image_data)
+
+    async def process_images_async(
+        self, image_data: List[Union[str, bytes]], request_obj
+    ):
+        if not image_data:
+            return None
+
+        if isinstance(image_data, list) and len(image_data) > 0:
+            # Multiple images
+            if len(image_data) > 1:
+                pixel_values, image_hashes, image_sizes, image_grid_thws = (
+                    [],
+                    [],
+                    [],
+                    [],
+                )
+                res = []
+                for img_data in image_data:
+                    res.append(self._process_single_image(img_data))
+                res = await asyncio.gather(*res)
+                for pixel_v, image_h, image_s, image_thw in res:
+                    pixel_values.append(pixel_v)
+                    image_hashes.append(image_h)
+                    image_sizes.append(image_s)
+                    image_grid_thws.append(image_thw)
+
+                if isinstance(pixel_values[0], np.ndarray):
+                    pixel_values = np.concatenate(pixel_values, axis=0)
+            else:
+                # A single image
+                pixel_values, image_hash, image_size, image_grid_thw = (
+                    await self._process_single_image(image_data[0])
+                )
+                image_hashes = [image_hash]
+                image_sizes = [image_size]
+                image_grid_thws = [image_grid_thw]
+        elif isinstance(image_data, str):
+            # A single image
+            pixel_values, image_hash, image_size, image_grid_thw = (
+                await self._process_single_image(image_data)
+            )
+            image_hashes = [image_hash]
+            image_sizes = [image_size]
+            image_grid_thws = [image_grid_thw]
+        else:
+            raise ValueError(f"Invalid image data: {image_data}")
+
+        return {
+            "pixel_values": pixel_values,
+            "image_hashes": image_hashes,
+            "image_sizes": image_sizes,
+            "modalities": request_obj.modalities,
+            "image_grid_thws": image_grid_thws,
+        }
+
+
 def get_image_processor(
     hf_config, server_args: ServerArgs, _image_processor
 ) -> BaseImageProcessor:
-    return LlavaImageProcessor(hf_config, server_args, _image_processor)
+    if "Qwen2VLForConditionalGeneration" in hf_config.architectures:
+        return Qwen2VLImageProcessor(hf_config, server_args, _image_processor)
+    else:
+        return LlavaImageProcessor(hf_config, server_args, _image_processor)
 
 
 def get_dummy_image_processor():

python/sglang/srt/managers/schedule_batch.py

@@ -128,6 +128,8 @@ class ImageInputs:
     image_embeds: Optional[List[torch.Tensor]] = None
     aspect_ratio_ids: Optional[List[torch.Tensor]] = None
     aspect_ratio_mask: Optional[List[torch.Tensor]] = None
+    # QWen2-VL related
+    image_grid_thws: List[Tuple[int, int, int]] = None
 
     @staticmethod
     def from_dict(obj, vocab_size):
@@ -135,6 +137,7 @@ class ImageInputs:
         ret = ImageInputs(
             pixel_values=obj["pixel_values"],
             image_hash=hash(tuple(obj["image_hashes"])),
+            image_grid_thws=obj.get("image_grid_thws"),
         )
         image_hash = ret.image_hash
         ret.pad_values = [
@@ -236,6 +239,9 @@ class Req:
         self.regex_fsm_state: int = 0
         self.jump_forward_map: JumpForwardMap = None
 
+        # For Qwen2-VL
+        self.mrope_position_delta = []  # use mutable object
+
     # whether request reached finished condition
     def finished(self) -> bool:
         return self.finished_reason is not None
@@ -854,6 +860,8 @@ class ScheduleBatch:
         global bid
         bid += 1
 
+        mrope_positions_delta = [req.mrope_position_delta for req in self.reqs]
+
         return ModelWorkerBatch(
             bid=bid,
             forward_mode=self.forward_mode,
@@ -869,6 +877,7 @@ class ScheduleBatch:
             image_inputs=image_inputs,
             lora_paths=lora_paths,
             sampling_info=self.sampling_info,
+            mrope_positions_delta=mrope_positions_delta,
         )
 
     def copy(self):
@@ -920,6 +929,9 @@ class ModelWorkerBatch:
     # Sampling info
     sampling_info: SamplingBatchInfo
 
+    # For Qwen2-VL
+    mrope_positions_delta: List[List[int]]
+
     def copy(self):
         return ModelWorkerBatch(
             bid=self.bid,
@@ -936,4 +948,5 @@ class ModelWorkerBatch:
             image_inputs=self.image_inputs,
             lora_paths=self.lora_paths,
             sampling_info=self.sampling_info.copy(),
+            mrope_positions_delta=self.mrope_positions_delta,
         )

python/sglang/srt/model_executor/forward_batch_info.py

@@ -36,6 +36,8 @@ from typing import TYPE_CHECKING, List, Optional
 import numpy as np
 import torch
 
+from sglang.srt.layers.rotary_embedding import MRotaryEmbedding
+
 if TYPE_CHECKING:
     from sglang.srt.layers.attention import AttentionBackend
     from sglang.srt.managers.schedule_batch import ImageInputs, ModelWorkerBatch
@@ -112,14 +114,88 @@ class ForwardBatch:
     token_to_kv_pool: BaseTokenToKVPool = None
     attn_backend: AttentionBackend = None
 
+    # For Qwen2-VL
+    mrope_positions: torch.Tensor = None
+
+    def compute_mrope_positions(
+        self, model_runner: ModelRunner, batch: ModelWorkerBatch
+    ):
+        device = model_runner.device
+        hf_config = model_runner.model_config.hf_config
+        mrope_positions_list = [None] * self.seq_lens.shape[0]
+        if self.forward_mode.is_decode():
+            for i, _ in enumerate(mrope_positions_list):
+                mrope_positions_list[i] = MRotaryEmbedding.get_next_input_positions(
+                    batch.mrope_positions_delta[i][0],
+                    int(self.seq_lens[i]) - 1,
+                    int(self.seq_lens[i]),
+                )
+        elif self.forward_mode.is_extend():
+            for i, image_inputs in enumerate(batch.image_inputs):
+                if image_inputs is None:
+                    # text only
+                    mrope_positions = [[i for i in range(self.seq_lens[i])]] * 3
+                    mrope_position_delta = 0
+                else:
+                    extend_start_loc, extend_seq_len, extend_prefix_len = (
+                        self.extend_start_loc[i],
+                        self.extend_seq_lens[i],
+                        self.extend_prefix_lens[i],
+                    )
+                    mrope_positions, mrope_position_delta = (
+                        MRotaryEmbedding.get_input_positions(
+                            input_tokens=self.input_ids[
+                                extend_start_loc : extend_start_loc + extend_seq_len
+                            ].tolist(),
+                            image_grid_thw=image_inputs.image_grid_thws,
+                            video_grid_thw=None,
+                            image_token_id=hf_config.image_token_id,
+                            video_token_id=hf_config.video_token_id,
+                            vision_start_token_id=hf_config.vision_start_token_id,
+                            vision_end_token_id=hf_config.vision_end_token_id,
+                            spatial_merge_size=hf_config.vision_config.spatial_merge_size,
+                            context_len=0,
+                            extend_prefix_len=extend_prefix_len.item(),
+                        )
+                    )
+                mrope_positions_list[i] = mrope_positions
+                batch.mrope_positions_delta[i].append(mrope_position_delta)
+
+        self.mrope_positions = torch.tensor(
+            np.concatenate(
+                [np.array(pos) for pos in mrope_positions_list],
+                axis=1,
+            ),
+            device=device,
+        )
+        self.mrope_positions = self.mrope_positions.to(torch.int64)
+
+    def compute_positions(self, model_runner: ModelRunner, batch: ModelWorkerBatch):
+        device = model_runner.device
+        if self.forward_mode.is_decode():
+            self.positions = (self.seq_lens - 1).to(torch.int64)
+        else:
+            self.positions = torch.tensor(
+                np.concatenate(
+                    [
+                        np.arange(prefix_len, prefix_len + extend_len)
+                        for prefix_len, extend_len in zip(
+                            batch.extend_prefix_lens, batch.extend_seq_lens
+                        )
+                    ],
+                    axis=0,
+                ),
+                device=device,
+            ).to(torch.int64)
+
     @classmethod
     def init_new(
         cls,
         batch: ModelWorkerBatch,
         model_runner: ModelRunner,
     ):
-        device = model_runner.device
 
+        device = model_runner.device
         ret = cls(
             forward_mode=batch.forward_mode,
             batch_size=len(batch.seq_lens),
@@ -156,6 +232,13 @@ class ForwardBatch:
             ret.extend_seq_lens_cpu = batch.extend_seq_lens
             ret.extend_logprob_start_lens_cpu = batch.extend_logprob_start_lens
 
+        # Init position information
+        is_mrope = model_runner.model_is_mrope
+        if is_mrope:
+            ret.compute_mrope_positions(model_runner, batch)
+        else:
+            ret.compute_positions(model_runner, batch)
+
         # Init attention information
         ret.req_to_token_pool = model_runner.req_to_token_pool
         ret.token_to_kv_pool = model_runner.token_to_kv_pool

python/sglang/srt/model_executor/model_runner.py

@@ -125,6 +125,11 @@ class ModelRunner:
             )
             server_args.chunked_prefill_size = None
             server_args.mem_fraction_static *= 0.95
+            # TODO: qwen2-vl does not support cuda graph now, set disable-graph=True automatically
+            if self.model_config.hf_config.architectures == [
+                "Qwen2VLForConditionalGeneration"
+            ]:
+                server_args.disable_cuda_graph = True
 
         # Global vars
         if server_args.show_time_cost:
@@ -622,6 +627,15 @@ class ModelRunner:
 
         return logits
 
+    @property
+    def model_is_mrope(self) -> bool:
+        """Detect if the model has "mrope" rope_scaling type.
+        mrope requires keep "rope_deltas" between prompt and decoding phases."""
+        rope_scaling = getattr(self.model_config.hf_config, "rope_scaling", {})
+        if rope_scaling is None:
+            return False
+        return rope_scaling.get("type", None) == "mrope"
+
 
 @lru_cache()
 def import_model_classes():

python/sglang/srt/utils.py

@@ -209,6 +209,7 @@ def is_multimodal_model(model_architectures):
         or "LlavaQwenForCausalLM" in model_architectures
         or "LlavaMistralForCausalLM" in model_architectures
         or "LlavaVidForCausalLM" in model_architectures
+        or "Qwen2VLForConditionalGeneration" in model_architectures
     ):
         return True
     else:

test/srt/test_vision_openai_server.py

@@ -344,5 +344,24 @@ class TestOpenAIVisionServer(unittest.TestCase):
             list(executor.map(self.run_decode_with_image, image_ids))
 
 
+class TestQWen2VLServer(TestOpenAIVisionServer):
+    @classmethod
+    def setUpClass(cls):
+        cls.model = "Qwen/Qwen2-VL-7B-Instruct"
+        cls.base_url = DEFAULT_URL_FOR_TEST
+        cls.api_key = "sk-123456"
+        cls.process = popen_launch_server(
+            cls.model,
+            cls.base_url,
+            timeout=DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
+            api_key=cls.api_key,
+            other_args=[
+                "--chat-template",
+                "qwen2-vl",
+            ],
+        )
+        cls.base_url += "/v1"
+
+
 if __name__ == "__main__":
     unittest.main()