from accelerate import Accelerator
from diffusers.utils.torch_utils import is_compiled_module

global_accelerator = None


def get_accelerator() -> Accelerator:
    global global_accelerator
    if global_accelerator is None:
        global_accelerator = Accelerator()
    return global_accelerator

def unwrap_model(model):
    accelerator = get_accelerator()
    model = accelerator.unwrap_model(model)
    model = model._orig_mod if is_compiled_module(model) else model
    return model