keras Deep Learning Slowness - 来自 Deep Learning with Python Chollet 的示例 IMDB 数据集

Question

I am having an issue with keras leading to my processor seemingly getting bogged down while working through examples.

In the IMDB data set for instance (exercise 3.4.1 in Deep Learning with Python by Chollet if anyone knows the book), running the script:

import keras
from keras.datasets import imdb    
(train_data, train_labels), (test_data, test_labels) = 
    imdb.load_data(num_words=10000)

Produces an output looking something like:

[=====>...] - ETA: 59s✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓16105472/17464789

That updates increasingly slowly as the numbers get larger and move toward completion.

I'm assuming my installation of keras/Tensorflow/CUDA/cuDNN is to blame, but curious if you know of anything obvious that would solve the issue.

Running Ubuntu Linux, NVIDIA GTX 1080, Keras/Tensorflow (GPU)/CUDA,cuDNN (maybe, assuming I installed everything correctly which is probably not accurate).

Thanks!

Answer 1

This progress bar is shown during the first initial download and should not be present on subsequent imports of the data. There might be several issues that cause this to slow down and/or fail:

• Your inte.net connection is unstable.
• There is an issue with the serving of the file. Maybe the repository server serves a corrupt file? (You could try to force download from another repository, see How to setup pip to download from mirror repository by default? )
• Your local disc or or a previously partial download are corrput: You can try to delete a partial download in ~/.keras/datasets/mnist.npz
• Check if your harddisk is full.