[Misc] Add tensor schema test coverage for multimodal models (#21754)

Signed-off-by: Isotr0py <mozf@mail2.sysu.edu.cn>
Signed-off-by: Isotr0py <2037008807@qq.com>

.buildkite/test-pipeline.yaml

@@ -581,7 +581,8 @@ steps:
     - pip install git+https://github.com/TIGER-AI-Lab/Mantis.git
     - pip freeze | grep -E 'torch'
     - pytest -v -s models/multimodal/processing
-    - pytest -v -s --ignore models/multimodal/generation/test_whisper.py models/multimodal -m core_model
+    - pytest -v -s --ignore models/multimodal/generation/test_whisper.py --ignore models/multimodal/test_tensor_schema.py models/multimodal -m core_model
+    - pytest -v -s models/multimodal/test_tensor_schema.py -m core_model  # Needs mp_method="spawn"
     - cd .. && pytest -v -s tests/models/multimodal/generation/test_whisper.py -m core_model  # Otherwise, mp_method="spawn" doesn't work
 
 - label: Multi-Modal Models Test (Extended) 1

tests/conftest.py

@@ -775,7 +775,7 @@ class VllmRunner:
         tokenizer_mode: str = "auto",
         trust_remote_code: bool = True,
         seed: Optional[int] = 0,
-        max_model_len: int = 1024,
+        max_model_len: Optional[int] = 1024,
         dtype: str = "auto",
         disable_log_stats: bool = True,
         tensor_parallel_size: int = 1,

tests/models/multimodal/test_tensor_schema.py

+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+from functools import partial
+from typing import Any
+from unittest.mock import patch
+
+import pytest
+from transformers import PretrainedConfig
+
+from vllm.config import ModelConfig
+from vllm.engine.llm_engine import LLMEngine as V0LLMEngine
+from vllm.inputs import InputProcessingContext
+from vllm.multimodal import MULTIMODAL_REGISTRY, MultiModalKwargs
+from vllm.multimodal.processing import BaseMultiModalProcessor
+from vllm.transformers_utils.tokenizer import cached_tokenizer_from_config
+from vllm.utils import GiB_bytes, set_default_torch_num_threads
+from vllm.v1.core.kv_cache_utils import get_kv_cache_config
+from vllm.v1.engine.core import EngineCore as V1EngineCore
+
+from ...conftest import VllmRunner
+from ..registry import _MULTIMODAL_EXAMPLE_MODELS, HF_EXAMPLE_MODELS
+
+ARCH_TO_SKIP = {
+    "MolmoForCausalLM": "incompatible requirements",
+    "MiniMaxVL01ForConditionalGeneration": "broken model",
+}
+
+
+def create_batched_mm_kwargs(
+    model_config: ModelConfig,
+    processor: BaseMultiModalProcessor,
+) -> MultiModalKwargs:
+    processing_info = processor.info
+    dummy_inputs = processor.dummy_inputs
+    supported_mm_limits = processing_info.get_supported_mm_limits()
+    mm_counts = {
+        modality: 3 if limit is None else limit
+        for modality, limit in supported_mm_limits.items()
+    }
+    processor_inputs = dummy_inputs.get_dummy_processor_inputs(
+        seq_len=model_config.max_model_len,
+        mm_counts=mm_counts,
+    )
+    mm_kwargs = processor.apply(
+        prompt=processor_inputs.prompt,
+        mm_data=processor_inputs.mm_data,
+        hf_processor_mm_kwargs=processor_inputs.hf_processor_mm_kwargs,
+        tokenization_kwargs=processor_inputs.tokenization_kwargs,
+    )["mm_kwargs"]
+    mm_kwargs = MultiModalKwargs.batch([mm_kwargs])
+    return mm_kwargs
+
+
+# Avoid OOM and reduce initialization time by only using 1 layer
+def hf_overrides(hf_config: PretrainedConfig,
+                 exist_overrides: dict[str, Any]) -> PretrainedConfig:
+    hf_config.update(exist_overrides)
+    text_config = hf_config.get_text_config()
+    # Ensure at least 2 expert per group
+    # Since `grouped_topk` assumes top-2
+    n_group = getattr(text_config, 'n_group', None)
+    num_experts = n_group * 2 if n_group is not None else 2
+    # we use three layers for Gemma-3n to check
+    # both normal layer and kv_shared_layer
+    text_config.update({
+        "num_layers": 1,
+        "num_hidden_layers": 1,
+        "num_experts": num_experts,
+        "num_experts_per_tok": 2,
+        "num_local_experts": num_experts,
+        # Otherwise there will not be any expert layers
+        "first_k_dense_replace": 0,
+        # To avoid OOM on DeepSeek-V3
+        "n_routed_experts": num_experts,
+        # For Gemma-3n
+        "num_kv_shared_layers": 1,
+    })
+    if hasattr(hf_config, "vision_config"):
+        hf_config.vision_config.update({
+            "num_layers": 1,
+            "num_hidden_layers": 1,
+        })
+    # e.g.: ibm-granite/granite-speech-3.3-2b
+    if hasattr(hf_config, "encoder_config"):
+        hf_config.encoder_config.update({
+            "num_layers": 1,
+            "num_hidden_layers": 1,
+        })
+    # e.g.: Qwen/Qwen2-Audio-7B-Instruct
+    if hasattr(hf_config, "audio_config"):
+        hf_config.audio_config.update({
+            "num_layers": 1,
+            "num_hidden_layers": 1,
+            "encoder_layers": 1,
+        })
+    return hf_config
+
+
+@pytest.mark.core_model
+@pytest.mark.parametrize("model_arch", list(_MULTIMODAL_EXAMPLE_MODELS.keys()))
+def test_model_tensor_schema(model_arch: str, vllm_runner: type[VllmRunner],
+                             monkeypatch):
+    if model_arch in ARCH_TO_SKIP:
+        pytest.skip(f"Skipping {model_arch} due to {ARCH_TO_SKIP[model_arch]}")
+
+    model_info = HF_EXAMPLE_MODELS.get_hf_info(model_arch)
+    model_info.check_available_online(on_fail="skip")
+
+    model_id = model_info.default
+
+    hf_overrides_fn = partial(hf_overrides,
+                              exist_overrides=model_info.hf_overrides)
+
+    model_config = ModelConfig(
+        model_id,
+        tokenizer=model_info.tokenizer or model_id,
+        tokenizer_mode=model_info.tokenizer_mode,
+        revision=model_info.revision,
+        trust_remote_code=model_info.trust_remote_code,
+        hf_overrides=model_info.hf_overrides,
+    )
+    model_cls = MULTIMODAL_REGISTRY._get_model_cls(model_config)
+    factories = MULTIMODAL_REGISTRY._processor_factories[model_cls]
+
+    if not any(
+            hasattr(model_cls, f"_parse_and_validate_{m}_input")
+            for m in ["image", "video", "audio"]):
+        pytest.skip(f"{model_arch} does not support tensor schema validation.")
+
+    ctx = InputProcessingContext(
+        model_config,
+        tokenizer=cached_tokenizer_from_config(model_config),
+    )
+    processing_info = factories.info(ctx)
+    supported_mm_limits = processing_info.get_supported_mm_limits()
+    limit_mm_per_prompt = {
+        modality: 3 if limit is None else limit
+        for modality, limit in supported_mm_limits.items()
+    }
+
+    # Avoid calling model.forward()
+    def _initialize_kv_caches_v0(self) -> None:
+        self.cache_config.num_gpu_blocks = 0
+        self.cache_config.num_cpu_blocks = 0
+
+    def _initialize_kv_caches_v1(self, vllm_config):
+        kv_cache_specs = self.model_executor.get_kv_cache_specs()
+        scheduler_kv_cache_config = get_kv_cache_config(
+            vllm_config,
+            kv_cache_specs[0],
+            10 * GiB_bytes,
+        )
+
+        # gpu_blocks (> 0), cpu_blocks, scheduler_kv_cache_config
+        return 1, 0, scheduler_kv_cache_config
+
+    with (patch.object(V0LLMEngine, "_initialize_kv_caches",
+                       _initialize_kv_caches_v0),
+          patch.object(V1EngineCore, "_initialize_kv_caches",
+                       _initialize_kv_caches_v1), monkeypatch.context() as m):
+        m.setenv("VLLM_ALLOW_INSECURE_SERIALIZATION", "1")
+        if model_info.v0_only:
+            m.setenv("VLLM_USE_V1", "0")
+
+        with (
+                set_default_torch_num_threads(1),
+                vllm_runner(
+                    model_id,
+                    tokenizer_name=model_info.tokenizer,
+                    tokenizer_mode=model_info.tokenizer_mode,
+                    revision=model_info.revision,
+                    trust_remote_code=model_info.trust_remote_code,
+                    max_model_len=model_info.max_model_len,
+                    load_format="dummy",
+                    hf_overrides=hf_overrides_fn,
+                    limit_mm_per_prompt=limit_mm_per_prompt,
+                    enforce_eager=True,
+                ) as vllm_model,
+        ):
+            model_config = vllm_model.llm.llm_engine.model_config
+            llm_engine = vllm_model.llm.llm_engine
+
+            if hasattr(llm_engine, "processor"):
+                # v1 processor
+                mm_registry = llm_engine.processor.mm_registry
+            else:
+                # v0 input_preprocessor
+                mm_registry = llm_engine.input_preprocessor.mm_registry
+
+            processor = mm_registry.create_processor(model_config)
+            mm_kwargs = create_batched_mm_kwargs(model_config, processor)
+
+            def validate_model_input(model):
+                for modality in ("audio", "image", "video"):
+                    method_name = f"_parse_and_validate_{modality}_input"
+                    if hasattr(model, method_name):
+                        getattr(model, method_name)(**mm_kwargs)
+
+            vllm_model.apply_model(validate_model_input)

tests/models/registry.py

@@ -383,6 +383,7 @@ _MULTIMODAL_EXAMPLE_MODELS = {
     "Glm4v_moeForConditionalGeneration": _HfExamplesInfo("zai-org/GLM-4.5V-Air",
                                           is_available_online=False),   # noqa: E501
     "H2OVLChatModel": _HfExamplesInfo("h2oai/h2ovl-mississippi-800m",
+                                      trust_remote_code=True,
                                       extras={"2b": "h2oai/h2ovl-mississippi-2b"},  # noqa: E501
                                       max_transformers_version="4.48",  # noqa: E501
                                       transformers_version_reason="HF model is not compatible."),  # noqa: E501
@@ -432,6 +433,9 @@ _MULTIMODAL_EXAMPLE_MODELS = {
                               trust_remote_code=True),
     "Llama_Nemotron_Nano_VL" : _HfExamplesInfo("nvidia/Llama-3.1-Nemotron-Nano-VL-8B-V1", # noqa: E501
                                                      trust_remote_code=True),
+    "Ovis": _HfExamplesInfo("AIDC-AI/Ovis2-1B", trust_remote_code=True,
+                            extras={"1.6-llama": "AIDC-AI/Ovis1.6-Llama3.2-3B",
+                                    "1.6-gemma": "AIDC-AI/Ovis1.6-Gemma2-9B"}),  # noqa: E501
     "PaliGemmaForConditionalGeneration": _HfExamplesInfo("google/paligemma-3b-mix-224",  # noqa: E501
                                                          extras={"v2": "google/paligemma2-3b-ft-docci-448"}),  # noqa: E501
     "Phi3VForCausalLM": _HfExamplesInfo("microsoft/Phi-3-vision-128k-instruct",
@@ -439,9 +443,6 @@ _MULTIMODAL_EXAMPLE_MODELS = {
                                         max_transformers_version="4.48",
                                         transformers_version_reason="Use of deprecated imports which have been removed.",  # noqa: E501
                                         extras={"phi3.5": "microsoft/Phi-3.5-vision-instruct"}),  # noqa: E501
-    "Ovis": _HfExamplesInfo("AIDC-AI/Ovis2-1B", trust_remote_code=True,
-                            extras={"1.6-llama": "AIDC-AI/Ovis1.6-Llama3.2-3B",
-                                    "1.6-gemma": "AIDC-AI/Ovis1.6-Gemma2-9B"}),  # noqa: E501
     "Phi4MMForCausalLM": _HfExamplesInfo("microsoft/Phi-4-multimodal-instruct",
                                         trust_remote_code=True),
     "Phi4MultimodalForCausalLM": _HfExamplesInfo("microsoft/Phi-4-multimodal-instruct",  # noqa: E501

vllm/model_executor/models/deepseek_vl2.py

@@ -51,13 +51,14 @@ class DeepseekVL2ImagePixelInputs(TensorSchema):
     """
     Dimensions:
         - bn: Batch size * number of images
+        - p: Number of patches
         - c: Number of channels (3)
         - h: Height of each image
         - w: Width of each image
     """
     type: Literal["pixel_values"]
     data: Annotated[Union[torch.Tensor, list[torch.Tensor]],
-                    TensorShape("bn", 3, "h", "w")]
+                    TensorShape("bn", "p", 3, "h", "w", dynamic_dims={"p"})]
     images_spatial_crop: Annotated[torch.Tensor, TensorShape("bn", 2)]
 
 

vllm/model_executor/models/keye.py

@@ -104,13 +104,16 @@ def smart_resize(
 class KeyeImagePixelInputs(TensorSchema):
     """
     Dimensions:
+        - b: Batch size
         - np: Number of patches
-        - cps: Number of channels * patch_size * patch_size
+        - c: Number of channels
+        - ps: Patch size
         - ni: Number of images
         - g: Grid dimensions (3 for t, h, w)
     """
     type: Literal["pixel_values"]
-    pixel_values: Annotated[torch.Tensor, TensorShape("np", "cps")]
+    pixel_values: Annotated[torch.Tensor,
+                            TensorShape("b", "np", 3, "ps", "ps")]
     image_grid_thw: Annotated[torch.Tensor, TensorShape("ni", 3)]
 
 
@@ -134,14 +137,16 @@ KeyeImageInputs = Union[KeyeImagePixelInputs, KeyeImageEmbeddingInputs]
 class KeyeVideoPixelInputs(TensorSchema):
     """
     Dimensions:
+        - b: Batch size
         - np: Number of patches
-        - ctps: Number of channels * temporal_patch_size * patch_size * 
-          patch_size
-        - nv: Number of videos
+        - c: Number of channels
+        - ps: Patch size
+        - ni: Number of images
         - g: Grid dimensions (3 for t, h, w)
     """
     type: Literal["pixel_values_videos"]
-    pixel_values_videos: Annotated[torch.Tensor, TensorShape("np", "ctps")]
+    pixel_values_videos: Annotated[torch.Tensor,
+                                   TensorShape("b", "np", 3, "ps", "ps")]
     video_grid_thw: Annotated[torch.Tensor, TensorShape("nv", 3)]
 
 

vllm/transformers_utils/processors/deepseek_vl2.py

@@ -256,7 +256,7 @@ class DeepseekVLV2Processor(ProcessorMixin):
     def __call__(
         self,
         *,
-        prompt: str,
+        text: str,
         images: list[Image.Image],
         inference_mode: bool = True,
         **kwargs,
@@ -264,7 +264,7 @@ class DeepseekVLV2Processor(ProcessorMixin):
         """
 
         Args:
-            prompt (str): the formatted prompt;
+            text (str): the formatted prompt;
             images (list[ImageType]): the list of images;
             inference_mode (bool): if True, then remove the last eos token;
             **kwargs:
@@ -278,7 +278,7 @@ class DeepseekVLV2Processor(ProcessorMixin):
         """
 
         prepare = self.process_one(
-            prompt=prompt,
+            prompt=text,
             images=images,
             inference_mode=inference_mode,
         )