    def get_global_avg_dict(self, prefix=""):
        """include a separator (e.g., `/`, or "_") at the end of `prefix`"""
        d = {f"{prefix}{k}": m.global_avg if m.count > 0 else 0. for k, m in self.meters.items()}
        return d
include a separator (e.g., `/`, or "_") at the end of `prefix`
videomamba/video_mm/utils/basic_utils.py