使用tensorflow时报错Could not create cudnn handle: CUDNN_STATUS_INTERNAL_ERROR

使用tf2.1时，cuda和cudnn都安装好了，报错
Could not create cudnn handle: CUDNN_STATUS_INTERNAL_ERROR

最开始以为是cudnn版本问题，试了各种方法，包括用conda重新装，不过推荐大家安装tensorflow-gpu可以用conda，可以默认安装cuda和cudnn,省心。不过这个错误不是这个原因导致的。

解决办法是在代码中加入下面代码：

pus = tf.config.experimental.list_physical_devices('GPU')
if gpus:
    try:
        # Currently, memory growth needs to be the same across GPUs
        for gpu in gpus:
            tf.config.experimental.set_memory_growth(gpu, True)
        logical_gpus = tf.config.experimental.list_logical_devices('GPU')
        print(len(gpus), "Physical GPUs,", len(logical_gpus), "Logical GPUs")
    except RuntimeError as e:
        # Memory growth must be set before GPUs have been initialized
        print(e)