def _initialize_engine(self):
        """Initialize the vLLM engine for inference."""
        engine_args = AsyncEngineArgs(
            model=self.model_name,
            gpu_memory_utilization=0.9,
            max_model_len=8192,
            trust_remote_code=True,
        )
        self.engine = AsyncLLMEngine.from_engine_args(engine_args)
Initialize the vLLM engine for inference.
src/pipecat/services/ultravox/stt.py