Tensorflow2.X 运行问题:Could not create cudnn handle: CUDNN_STATUS_ALLOC_FAILED

Probably you're running out of GPU memory.

If you're using TensorFlow 1.x:

1st option) set allow_growth to true.

import tensorflow as tf    
config = tf.ConfigProto()
config.gpu_options.allow_growth=True
sess = tf.Session(config=config)

2nd option) set memory fraction.

# change the memory fraction as you want

import tensorflow as tf
gpu_options = tf.GPUOptions(per_process_gpu_memory_fraction=0.3)
sess = tf.Session(config=tf.ConfigProto(gpu_options=gpu_options))

If you're using TensorFlow 2.x:

1st option) set set_memory_growth to true.

# Currently the ‘memory growth’ option should be the same for all GPUs.
# You should set the ‘memory growth’ option before initializing GPUs.

import tensorflow as tf
gpus = tf.config.experimental.list_physical_devices('GPU')
if gpus:
  try:
    for gpu in gpus:
      tf.config.experimental.set_memory_growth(gpu, True)
  except RuntimeError as e:
    print(e)

2nd option) set memory_limit as you want. Just change the index of gpus and memory_limit in this code below.

import tensorflow as tf
gpus = tf.config.experimental.list_physical_devices('GPU')
if gpus:
  try:
    tf.config.experimental.set_virtual_device_configuration(gpus[0], [tf.config.experimental.VirtualDeviceConfiguration(memory_limit=1024)])
  except RuntimeError as e:
    print(e)

使用方案：

import tensorflow as tf
gpus = tf.config.experimental.list_physical_devices('GPU')
if gpus:
  try:
    for gpu in gpus:
      tf.config.experimental.set_memory_growth(gpu, True)
  except RuntimeError as e:
    print(e)
问题解决。
参考：https://stackoverflow.com/questions/48610132/tensorflow-crash-with-cudnn-status-alloc-failed