[Misc] Avoid direct access of global `mm_registry` in `compute_encoder_budget` (#15621)

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

vllm/v1/core/encoder_cache_manager.py

@@ -3,7 +3,7 @@
 from typing import TYPE_CHECKING
 
 from vllm.logger import init_logger
-from vllm.multimodal import MULTIMODAL_REGISTRY
+from vllm.multimodal import MultiModalRegistry
 from vllm.v1.request import Request
 
 if TYPE_CHECKING:
@@ -67,6 +67,7 @@ class EncoderCacheManager:
 def compute_encoder_budget(
     model_config: "ModelConfig",
     scheduler_config: "SchedulerConfig",
+    mm_registry: MultiModalRegistry,
 ) -> tuple[int, int]:
     """Compute the encoder cache budget based on the model and scheduler 
     configurations.
@@ -74,6 +75,7 @@ def compute_encoder_budget(
     Args:
         model_config: Model configuration.
         scheduler_config: Scheduler configuration.
+        mm_registry: Provides information about the token cost.
 
     Returns:
         - Compute budget for encoder execution, in unit of number of tokens 
@@ -89,7 +91,11 @@ def compute_encoder_budget(
     (
         encoder_compute_budget,
         encoder_cache_size,
-    ) = _compute_encoder_budget_multimodal(model_config, scheduler_config)
+    ) = _compute_encoder_budget_multimodal(
+        model_config,
+        scheduler_config,
+        mm_registry,
+    )
 
     return encoder_compute_budget, encoder_cache_size
 
@@ -97,6 +103,7 @@ def compute_encoder_budget(
 def _compute_encoder_budget_multimodal(
     model_config: "ModelConfig",
     scheduler_config: "SchedulerConfig",
+    mm_registry: MultiModalRegistry,
 ) -> tuple[int, int]:
     """Compute the encoder cache budget based on the model and scheduler 
     configurations for a multimodal model.
@@ -104,6 +111,7 @@ def _compute_encoder_budget_multimodal(
     Args:
         model_config: Model configuration.
         scheduler_config: Scheduler configuration.
+        mm_registry: Provides information about the token cost.
 
     Returns:
         - Compute budget for encoder execution, in unit of number of tokens 
@@ -112,8 +120,8 @@ def _compute_encoder_budget_multimodal(
             in the input sequence.
     """
 
-    max_tokens_by_modality_dict = MULTIMODAL_REGISTRY.get_max_tokens_per_item_by_nonzero_modality(  # noqa: E501
-        model_config)
+    max_tokens_by_modality_dict = mm_registry \
+        .get_max_tokens_per_item_by_nonzero_modality(model_config)
 
     if not max_tokens_by_modality_dict:
         logger.warning(

vllm/v1/core/sched/scheduler.py

@@ -10,6 +10,7 @@ from typing import Optional, Union
 from vllm.config import (CacheConfig, LoRAConfig, ModelConfig, SchedulerConfig,
                          SpeculativeConfig)
 from vllm.logger import init_logger
+from vllm.multimodal import MULTIMODAL_REGISTRY, MultiModalRegistry
 from vllm.v1.core.encoder_cache_manager import (EncoderCacheManager,
                                                 compute_encoder_budget)
 from vllm.v1.core.kv_cache_manager import KVCacheManager
@@ -38,6 +39,7 @@ class Scheduler(SchedulerInterface):
         speculative_config: Optional[SpeculativeConfig],
         log_stats: bool,
         structured_output_manager: StructuredOutputManager,
+        mm_registry: MultiModalRegistry = MULTIMODAL_REGISTRY,
     ) -> None:
         self.scheduler_config = scheduler_config
         self.cache_config = cache_config
@@ -93,6 +95,7 @@ class Scheduler(SchedulerInterface):
         encoder_compute_budget, encoder_cache_size = compute_encoder_budget(
             model_config=model_config,
             scheduler_config=scheduler_config,
+            mm_registry=mm_registry,
         )
 
         # NOTE(woosuk): Here, "encoder" includes the vision encoder (and

vllm/v1/worker/gpu_model_runner.py

@@ -137,6 +137,7 @@ class GPUModelRunner(LoRAModelRunnerMixin):
         encoder_compute_budget, encoder_cache_size = compute_encoder_budget(
             model_config=model_config,
             scheduler_config=scheduler_config,
+            mm_registry=self.mm_registry,
         )
         self.max_num_encoder_input_tokens = encoder_compute_budget
         self.encoder_cache_size = encoder_cache_size
@@ -1439,9 +1440,8 @@ class GPUModelRunner(LoRAModelRunnerMixin):
             # NOTE: Currently model is profiled with a single non-text
             # modality with the max possible input tokens even when
             # it supports multiple.
-            max_tokens_by_modality_dict = (
-                MULTIMODAL_REGISTRY.
-                get_max_tokens_per_item_by_nonzero_modality(self.model_config))
+            max_tokens_by_modality_dict = self.mm_registry \
+                .get_max_tokens_per_item_by_nonzero_modality(self.model_config)
             dummy_data_modality, max_tokens_per_mm_item = max(
                 max_tokens_by_modality_dict.items(), key=lambda item: item[1])
 

vllm/v1/worker/tpu_model_runner.py

@@ -109,6 +109,7 @@ class TPUModelRunner:
         encoder_compute_budget, encoder_cache_size = compute_encoder_budget(
             model_config=model_config,
             scheduler_config=scheduler_config,
+            mm_registry=self.mm_registry,
         )
         self.max_num_encoder_input_tokens = encoder_compute_budget
         self.encoder_cache_size = encoder_cache_size