[Bugfix] Tweak distributed process group initialization and add dummy… (#816)

fix batch execution method to enable DP in V1

Signed-off-by: Yizhou Liu <liu_yizhou@outlook.com>

vllm_ascend/worker/worker_v1.py

@@ -216,6 +216,9 @@ class NPUWorker(WorkerBase):
         else:
             self.profiler.stop()
 
+    def execute_dummy_batch(self) -> None:
+        self.model_runner._dummy_run(1)
+
     def _init_worker_distributed_environment(self) -> None:
         """Initialize the distributed environment."""
         additional_config = self.vllm_config.additional_config