tflearn error: No variables to save

[YichiHuang]

Hi, I download the speech_data.py and speaker_classifier_tflearn.py. When I run the speaker_classifier_tflearn.py, I got errors as follows: Traceback (most recent call last): File "speaker_classifier_tflearn.py", line 28, in <module> model = tflearn.DNN(net) File "/root/anaconda2/envs/tensorflow/lib/python2.7/site-packages/tflearn/models/dnn.py", line 57, in __init__ session=session) File "/root/anaconda2/envs/tensorflow/lib/python2.7/site-packages/tflearn/helpers/trainer.py", line 125, in __init__ keep_checkpoint_every_n_hours=keep_checkpoint_every_n_hours) File "/root/anaconda2/envs/tensorflow/lib/python2.7/site-packages/tensorflow/python/training/saver.py", line 1000, in __init__ self.build() File "/root/anaconda2/envs/tensorflow/lib/python2.7/site-packages/tensorflow/python/training/saver.py", line 1021, in build raise ValueError("No variables to save") ValueError: No variables to save

[Adam-Vandervorst]

I have the same problem using: Debian 9 Tensorflow .12 GPU Python 3.5

[anees042]

I have the same problem using: Windows 10 Tensorflow .12 Python3.5

[pannous]

strange, maybe a tflearn.py bug? we'll investigate ...

[adroit91]

We also noted this behaviour when using the bleeding edge of Tensorflow itself as well as tflearn. Trying checking out the last official releases of both, and it should work.

[Adam-Vandervorst]

I upgraded tensorflow-gpu to 0.12.0rc1 and tflearn to 0.2.2 and this build seems broken. In the tflearn config file:

    _FLOATX = tf.float32
AttributeError: module 'tensorflow' has no attribute 'float32'

EDIT: downgraded tensorflow-gpu to previous build, still raising an error.

  File "/tflearn/summaries.py", line 46, in get_summary
    summ = tf.scalar_summary(tag, value)
AttributeError: module 'tensorflow' has no attribute 'scalar_summary'

[pannous]

Sorry I can NOT reproduce the error with any version of tensorflow / tflearn :( maybe try pip install git+https://github.com/tflearn/tflearn.git pip3 install git+https://github.com/tflearn/tflearn.git

[Adam-Vandervorst]

What system setup and tflearn/tensorflow versions are you using? With the latest (git) libs I still get the same error, and I'm sadly not able to find information about it online.

[pannous]

strange. tried most combinations of py2.7 / py3.5 tf0.11.0 / 0.12.0rc1 tflearn-0.2.2 tflearn-0.1.1(?) mac / ubuntu only getting warnings, no errors

[pannous]

at this point it might be easiest if you just patch tflearn/helpers/trainer.py, line 125 manually

[pannous]

or file a tflearn bug astonishing how many people here seem to be affected.

or just skip the toy examples and jump straight to ./densenet_layer.py

[Adam-Vandervorst]

Alright, found it. It was a tensorflow issue, tho I do not know that exactly.

https://storage.googleapis.com/tensorflow/linux/gpu/tensorflow_gpu-0.12.0rc1-cp35-cp35m-linux_x86_64.whl

(Watch out, download link!) Worked for me, while nor the latest build (git) nor the pip version worked. Thank you, I opened the issue, as like you said, many people are affected.

[anees042]

https://github.com/tflearn/tflearn/issues/480

is it the same issue?

[Adam-Vandervorst]

Correct.

[anees042]

even downgrading tensorflow to 0.11 solves the problem; https://storage.googleapis.com/tensorflow/linux/cpu/cloudml/tensorflow-0.11.0rc2-cp27-none-linux_x86_64.whl

can't do that on windows :( installing gpu version solves the problem on windows

[raffaelbd]

@pannous is this a complete project?