o zi @spddlZddlmZmZddlZddlmZmZddlm Z ddl m Z ddl m Z edZGdd d e ZdS) N)AnyLiteral)get_argsoverride)_XLA_AVAILABLE) Precision) Optimizable)z32-true16-true bf16-truec@sJeZdZdZdeddfddZedededefd d Z ed d d Z dS) XLAPrecisionzPlugin for training with XLA. Args: precision: Full precision (32-true) or half precision (16-true, bf16-true). Raises: ValueError: If unsupported ``precision`` is provided. precisionreturnNcCststtttt}||vrtd|d|d||_|dkr-dtjd<t j |_ dS|dkrs