nvidia-smi Volatile GPU-Utilization explanation?
<p>I know that <code>nvidia-smi -l 1</code> will give the GPU usage every one second (similarly to the following). However, I would appreciate an explanation on what <code>Volatile GPU-Util</code> really means. Is that the number of used SMs over total SMs, or the occupancy, or something else?</p>

<pre><code>+-----------------------------------------------------------------------------+
| NVIDIA-SMI 367.48                 Driver Version: 367.48                    |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  Tesla K20c          Off  | 0000:03:00.0     Off |                    0 |
| 30%   41C    P0    53W / 225W |      0MiB /  4742MiB |     96%      Default |
+-------------------------------+----------------------+----------------------+
|   1  Tesla K20c          Off  | 0000:43:00.0     Off |                    0 |
| 36%   49C    P0    95W / 225W |   4516MiB /  4742MiB |     63%      Default |
+-------------------------------+----------------------+----------------------+

+-----------------------------------------------------------------------------+
| Processes:                                                       GPU Memory |
|  GPU       PID  Type  Process name                               Usage      |
|=============================================================================|
|    1      5193    C   python                                        4514MiB |
+-----------------------------------------------------------------------------+
</code></pre>