title: I already have a CUDA toolkit installed, why is conda installing CUDA again?
body: <p>I have installed cuda version 11.2 and CUDNN version 8.1 in ubuntu</p>
  <pre><code>cnvcc: NVIDIA (R) Cuda compiler driver
  Copyright (c) 2005-2020 NVIDIA Corporation
  Built on Mon_Nov_30_19:08:53_PST_2020
  Cuda compilation tools, release 11.2, V11.2.67
  Build cuda_11.2.r11.2/compiler.29373293_0
  </code></pre>
  <p>When I installed tensorflow-gpu in conda environment, it is again installing cuda and cudnn.</p>
  <ul>
  <li>Why is it happening.</li>
  <li>How to stop conda from installing cuda and cudnn again?</li>
  <li>Can I just use cuda and cudnn that I have already installed? If yes, how?</li>
  </ul>
  <p><a href="https://i.stack.imgur.com/ycVff.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ycVff.png" alt="enter image description here" /></a></p>