[Bugfix] [Model] Missing MRoPE function definition from KeyeForConditionalGeneration (#27895)

tjtanaa · web-flow · commit e2347dbf58ef · 2025-11-01T13:45:23.000+08:00
Signed-off-by: tjtanaa &lt;tunjian.tan@embeddedllm.com&gt;
diff --git a/tests/models/multimodal/generation/test_keye.py b/tests/models/multimodal/generation/test_keye.py
@@ -0,0 +1,86 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+from dataclasses import asdict
+from typing import NamedTuple
+
+import pytest
+from PIL.Image import Image
+from transformers import AutoProcessor
+
+from vllm import LLM, EngineArgs, SamplingParams
+from vllm.multimodal.utils import encode_image_base64
+
+MODEL_NAME = "Kwai-Keye/Keye-VL-8B-Preview"
+
+QUESTION = "What is the content of each image?"
+
+
+class ModelRequestData(NamedTuple):
+    engine_args: EngineArgs
+    prompt: str
+    image_data: list[Image]
+    stop_token_ids: list[int] | None = None
+    chat_template: str | None = None
+    sampling_params: SamplingParams | None = None
+
+
+@pytest.mark.core_model
+@pytest.mark.parametrize("question", [QUESTION])
+def test_keye_vl(
+    image_assets,
+    question: str,
+):
+    images = [asset.pil_image for asset in image_assets]
+
+    image_urls = [
+        f"data:image/jpeg;base64,{encode_image_base64(image)}" for image in images
+    ]
+
+    engine_args = EngineArgs(
+        model=MODEL_NAME,
+        trust_remote_code=True,
+        max_model_len=8192,
+        max_num_seqs=5,
+        limit_mm_per_prompt={"image": len(image_urls)},
+    )
+
+    placeholders = [{"type": "image", "image": url} for url in image_urls]
+    messages = [
+        {
+            "role": "user",
+            "content": [
+                *placeholders,
+                {"type": "text", "text": question},
+            ],
+        },
+    ]
+
+    processor = AutoProcessor.from_pretrained(MODEL_NAME, trust_remote_code=True)
+
+    prompt = processor.apply_chat_template(
+        messages, tokenize=False, add_generation_prompt=True
+    )
+
+    engine_args = asdict(engine_args) | {"seed": 42}
+    llm = LLM(**engine_args)
+
+    sampling_params = SamplingParams(
+        temperature=0.0, max_tokens=256, stop_token_ids=None
+    )
+
+    outputs = llm.generate(
+        {
+            "prompt": prompt,
+            "multi_modal_data": {"image": images},
+        },
+        sampling_params=sampling_params,
+    )
+
+    print("-" * 50)
+    for o in outputs:
+        generated_text = o.outputs[0].text
+        print(generated_text)
+        assert len(generated_text) > 10, (
+            f"Generated text is too short: {generated_text}"
+        )
+        print("-" * 50)
diff --git a/vllm/model_executor/models/keye.py b/vllm/model_executor/models/keye.py
@@ -17,7 +17,9 @@
 from transformers.utils import torch_int
 
 from vllm.attention.backends.registry import _Backend
-from vllm.attention.layer import check_upstream_fa_availability
+from vllm.attention.layer import (
+    maybe_get_vit_flash_attn_backend,
+)
 from vllm.config import VllmConfig
 from vllm.config.multimodal import BaseDummyOptions
 from vllm.distributed import get_tensor_model_parallel_world_size
@@ -56,12 +58,14 @@
     PromptUpdate,
 )
 from vllm.multimodal.profiling import BaseDummyInputsBuilder
+from vllm.platforms import current_platform
 from vllm.sequence import IntermediateTensors
 from vllm.utils.tensor_schema import TensorSchema, TensorShape
 
 from .interfaces import (
     MultiModalEmbeddings,
     SupportsLoRA,
+    SupportsMRoPE,
     SupportsMultiModal,
     SupportsPP,
 )
@@ -337,7 +341,10 @@ def apply_rotary_pos_emb_flashatt(
     cos = cos.chunk(2, dim=-1)[0].contiguous()
     sin = sin.chunk(2, dim=-1)[0].contiguous()
 
-    from vllm.vllm_flash_attn.layers.rotary import apply_rotary_emb
+    if current_platform.is_cuda():
+        from vllm.vllm_flash_attn.layers.rotary import apply_rotary_emb
+    elif current_platform.is_rocm():
+        from flash_attn.ops.triton.rotary import apply_rotary as apply_rotary_emb
 
     q_embed = apply_rotary_emb(q.float(), cos.float(), sin.float()).type_as(q)
     k_embed = apply_rotary_emb(k.float(), cos.float(), sin.float()).type_as(k)
@@ -398,18 +405,28 @@ def __init__(
             attn_backend_override=attn_backend_override,
         )
 
-        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
+        self.attn_backend, self.flash_attn_varlen_func = (
+            maybe_get_vit_flash_attn_backend(
+                self.attn_backend,
+                use_upstream_fa=False,
+                attn_backend_override=attn_backend_override,
+            )
+        )
 
-        if self.attn_backend not in {_Backend.FLASH_ATTN, _Backend.XFORMERS}:
+        if self.attn_backend not in {
+            _Backend.FLASH_ATTN,
+            _Backend.XFORMERS,
+            _Backend.ROCM_AITER_FA,
+        }:
             raise RuntimeError(
                 f"Keye-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,
+        }
+
     def forward(
         self,
         hidden_states: torch.Tensor,
@@ -457,15 +474,10 @@ def forward(
                 self.head_dim,
             )
 
-        if self.attn_backend == _Backend.FLASH_ATTN:
-            if self.use_upstream_fa:
-                from flash_attn import flash_attn_varlen_func
-            else:
-                from vllm.vllm_flash_attn import flash_attn_varlen_func
-
+        if self.is_flash_attn_backend:
             q, k, v = (rearrange(x, "b s ... -> (b s) ...") for x in [q, k, v])
 
-            output = flash_attn_varlen_func(
+            output = self.flash_attn_varlen_func(
                 q,
                 k,
                 v,
@@ -1542,7 +1554,7 @@ def get_mm_mapping(self) -> MultiModelKeys:
     dummy_inputs=KeyeDummyInputsBuilder,
 )
 class KeyeForConditionalGeneration(
-    BaseKeyeModule, SupportsMultiModal, SupportsLoRA, SupportsPP
+    BaseKeyeModule, SupportsMultiModal, SupportsLoRA, SupportsPP, SupportsMRoPE
 ):
     def _build_projector(
         self,
@@ -1611,3 +1623,142 @@ def _process_video_input(
         return tuple(
             self._process_video_embeds(video_type, video_grid_thw, pixel_values_videos)
         )
+
+    def get_mrope_input_positions(
+        self,
+        input_tokens: list[int],
+        hf_config: PretrainedConfig,
+        image_grid_thw: list[list[int]] | torch.Tensor,
+        video_grid_thw: list[list[int]] | torch.Tensor,
+        context_len: int = 0,
+        seq_len: int | None = None,
+        second_per_grid_ts: list[float] | None = None,
+        audio_feature_lengths: torch.Tensor | None = None,
+        use_audio_in_video: bool = False,
+    ) -> tuple[torch.Tensor, int]:
+        if isinstance(video_grid_thw, list) and len(video_grid_thw) > 0:
+            video_grid_thw = video_grid_thw[0]
+        """Get mrope input positions and delta value (Keye series)."""
+
+        def split_thw(grid_thw: torch.Tensor | list[int]) -> list[list[int]]:
+            """
+            Split grid_thw along the t dimension.
+
+            Args:
+                grid_thw: shape [N, 3] tensor or nested list of [t, h, w].
+
+            Returns:
+                List of [1, h, w] rows, repeated t times for each original row.
+            """
+
+            if isinstance(grid_thw, list):
+                grid_thw = torch.tensor(grid_thw, dtype=torch.long)
+
+            if grid_thw.numel() == 0:
+                return []
+
+            t, hw = grid_thw[:, 0], grid_thw[:, 1:]
+            ones = torch.ones_like(hw[:, :1])  # [N,1]
+            out = torch.cat([ones, hw], dim=1).repeat_interleave(t, dim=0)
+            return out.tolist()
+
+        video_grid_thw = split_thw(video_grid_thw)
+
+        image_token_id = hf_config.image_token_id
+        video_token_id = hf_config.video_token_id
+        spatial_merge_size = hf_config.vision_config.spatial_merge_size
+
+        image_nums = len(image_grid_thw)
+        frame_nums = len(video_grid_thw)
+        llm_pos_ids_list: list = []
+
+        st = 0
+        remain_images, remain_frames = image_nums, frame_nums
+
+        image_index, video_index = 0, 0
+        for _ in range(image_nums + frame_nums):
+            if remain_images > 0:
+                try:
+                    ed_image = input_tokens.index(image_token_id, st)
+                except ValueError:
+                    ed_image = len(input_tokens) + 1
+            else:
+                ed_image = len(input_tokens) + 1
+            if remain_frames > 0:
+                try:
+                    ed_video = input_tokens.index(video_token_id, st)
+                except ValueError:
+                    ed_video = len(input_tokens) + 1
+            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_frames -= 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)
+                )
+                .long()
+                .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)
+        mrope_position_delta = (llm_positions.max() + 1 - len(input_tokens)).item()
+        llm_positions = llm_positions[:, context_len:seq_len]
+
+        return llm_positions, mrope_position_delta
