[Core] Move save_tensorized_model logic to Worker (#35825)

Signed-off-by: Nick Hill <nickhill123@gmail.com>

vllm/v1/worker/gpu_model_runner.py

@@ -58,7 +58,7 @@ from vllm.model_executor.layers.rotary_embedding import (
     MRotaryEmbedding,
     XDRotaryEmbedding,
 )
-from vllm.model_executor.model_loader import TensorizerLoader, get_model_loader
+from vllm.model_executor.model_loader import get_model_loader
 from vllm.model_executor.model_loader.reload import (
     finalize_layerwise_reload,
     initialize_layerwise_reload,
@@ -194,7 +194,6 @@ from .utils import (
 )
 
 if TYPE_CHECKING:
-    from vllm.model_executor.model_loader.tensorizer import TensorizerConfig
     from vllm.v1.core.sched.output import GrammarOutput, SchedulerOutput
     from vllm.v1.spec_decode.ngram_proposer import NgramProposer
 
@@ -4510,16 +4509,6 @@ class GPUModelRunner(
                     weights_not_loaded,
                 )
 
-    def save_tensorized_model(
-        self,
-        tensorizer_config: "TensorizerConfig",
-    ) -> None:
-        TensorizerLoader.save_model(
-            self.get_model(),
-            tensorizer_config=tensorizer_config,
-            model_config=self.model_config,
-        )
-
     def _get_prompt_logprobs_dict(
         self,
         hidden_states: torch.Tensor,

vllm/v1/worker/gpu_worker.py

@@ -57,6 +57,7 @@ from vllm.v1.worker.utils import is_residual_scattered_for_sp
 from vllm.v1.worker.worker_base import WorkerBase
 from vllm.v1.worker.workspace import init_workspace_manager
 
+from ...model_executor.model_loader import TensorizerLoader
 from .gpu.warmup import warmup_kernels
 from .utils import request_memory
 
@@ -836,12 +837,11 @@ class Worker(WorkerBase):
             max_size=max_size,
         )
 
-    def save_tensorized_model(
-        self,
-        tensorizer_config: "TensorizerConfig",
-    ) -> None:
-        self.model_runner.save_tensorized_model(
+    def save_tensorized_model(self, tensorizer_config: "TensorizerConfig") -> None:
+        TensorizerLoader.save_model(
+            self.get_model(),
             tensorizer_config=tensorizer_config,
+            model_config=self.model_config,
         )
 
     def init_weight_transfer_engine(self, init_info: dict) -> None: