title: Can you use GPU in Google Colab without any library?
body: <p>I've coded a Neural Network from scratch in Python and I am using Google Colaboratory to train it. However, if I enable GPU or TPU acceleration, the training is not faster.</p>
  <p>When you search for examples online, all of them use Tensorflow and other libraries, and their training times are shorter with GPU than without it.</p>
  <p>Am I doing it correctly or am I missing something and the GPU is not being used?</p>