Question

我正在训练张力流，然后我把键盘捣碎了，因为屎和笑声：

INFO:tensorflow:global step 101: loss = 5.1761 (52.61 sec/step)
INFO:tensorflow:global step 102: loss = 4.8679 (18.78 sec/step)
INFO:tensorflow:global step 103: loss = 4.9662 (19.02 sec/step)
INFO:tensorflow:global step 104: loss = 5.1126 (17.36 sec/step)
^C^X^C^[^[^[^[^[





exit
Traceback (most recent call last):
  File "/Users/kristoffer/web/im2txt/im2txt/bazel-bin/im2txt/train.runfiles/im2txt/im2txt/train.py", line 114, in <module>
    tf.app.run()
  File "/Library/Python/2.7/site-packages/tensorflow/python/platform/app.py", line 43, in run
    sys.exit(main(sys.argv[:1] + flags_passthrough))
  File "/Users/kristoffer/web/im2txt/im2txt/bazel-bin/im2txt/train.runfiles/im2txt/im2txt/train.py", line 110, in main
    saver=saver)
  File "/Library/Python/2.7/site-packages/tensorflow/contrib/slim/python/slim/learning.py", line 782, in train
    sess, train_op, global_step, train_step_kwargs)
  File "/Library/Python/2.7/site-packages/tensorflow/contrib/slim/python/slim/learning.py", line 530, in train_step
    run_metadata=run_metadata)
  File "/Library/Python/2.7/site-packages/tensorflow/python/client/session.py", line 766, in run
    run_metadata_ptr)
  File "/Library/Python/2.7/site-packages/tensorflow/python/client/session.py", line 964, in _run
    feed_dict_string, options, run_metadata)
  File "/Library/Python/2.7/site-packages/tensorflow/python/client/session.py", line 1014, in _do_run
    target_list, options, run_metadata)
  File "/Library/Python/2.7/site-packages/tensorflow/python/client/session.py", line 1021, in _do_call
    return fn(*args)
  File "/Library/Python/2.7/site-packages/tensorflow/python/client/session.py", line 1003, in _run_fn
    status, run_metadata)
KeyboardInterrupt
Kristoffers-MacBook-Pro:im2txt kristoffer$ logout
Saving session...
...copying shared history...
...saving history...truncating history files...
...completed.

[Process completed]

当我尝试再次开始训练时，我收到以下错误：

$ bazel-bin/im2txt/train   --input_file_pattern="${MSCOCO_DIR}/train-?????-of-00256"   --inception_checkpoint_file="${INCEPTION_CHECKPOINT}"   --train_dir="${MODEL_DIR}/train"   --train_inception=false   --number_of_steps=150
CRITICAL:tensorflow:Found no input files matching /train-?????-of-00256
Traceback (most recent call last):
  File "/Users/kristoffer/web/im2txt/im2txt/bazel-bin/im2txt/train.runfiles/im2txt/im2txt/train.py", line 114, in <module>
    tf.app.run()
  File "/Library/Python/2.7/site-packages/tensorflow/python/platform/app.py", line 43, in run
    sys.exit(main(sys.argv[:1] + flags_passthrough))
  File "/Users/kristoffer/web/im2txt/im2txt/bazel-bin/im2txt/train.runfiles/im2txt/im2txt/train.py", line 65, in main
    model.build()
  File "/Users/kristoffer/web/im2txt/im2txt/bazel-bin/im2txt/train.runfiles/im2txt/im2txt/show_and_tell_model.py", line 353, in build
    self.build_inputs()
  File "/Users/kristoffer/web/im2txt/im2txt/bazel-bin/im2txt/train.runfiles/im2txt/im2txt/show_and_tell_model.py", line 153, in build_inputs
    num_reader_threads=self.config.num_input_reader_threads)
  File "/Users/kristoffer/web/im2txt/im2txt/bazel-bin/im2txt/train.runfiles/im2txt/im2txt/ops/inputs.py", line 98, in prefetch_input_data
    data_files, shuffle=True, capacity=16, name=shard_queue_name)
  File "/Library/Python/2.7/site-packages/tensorflow/python/training/input.py", line 211, in string_input_producer
    raise ValueError(not_null_err)
ValueError: string_input_producer requires a non-null input tensor

是什么导致了这一点，我该怎么办呢？有没有正确的方法来暂停/取消培训课程？（如果你通过训练50步启动然后将步骤设置为100，那么Tensorflow似乎会从它离开的地方开始）

Answer 1

似乎您的问题是由于Tensorflow正在尝试加载会话而造成的，当您中断代码时，该会话未被正确保存。现在，您的解决方案要么在重新启动代码时没有加载最后一个会话（通过注释加载行），要么删除已保存的会话文件（然后它应该从头开始自动重启）。很难给出一个更具体的例子，因为你没有分享你的代码......

键盘中断后继续训练？

1 个答案: