Titan RTX with Isaac Sim 99% usage and temperature swings around 83-85 °C on empty viewport

Graphics / Linux Linux
1

Hi,

When starting the NVIDIA Omniverse Isaac Sim the gpu usage goes to 99-100% and the temperature goes up to 85 °C.

It does so even when there is no scene and the Stage only contains the default World Xform with the defaultLight.

Why is the usage utilisation 100% - if nothing is being rendered, and the tool is idle. Is constantly being around this temperature normal?

This is my nvidia-smi output:

+-----------------------------------------------------------------------------+
| NVIDIA-SMI 460.32.03    Driver Version: 460.32.03    CUDA Version: 11.2     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|                               |                      |               MIG M. |
|===============================+======================+======================|
|   0  TITAN RTX           Off  | 00000000:02:00.0  On |                  N/A |
| 65%   84C    P2   255W / 280W |   2736MiB / 24217MiB |     99%      Default |
|                               |                      |                  N/A |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                                  |
|  GPU   GI   CI        PID   Type   Process name                  GPU Memory |
|        ID   ID                                                   Usage      |
|=============================================================================|
|    0   N/A  N/A      1246      G   /usr/lib/xorg/Xorg                330MiB |
|    0   N/A  N/A      1442      G   /usr/bin/gnome-shell               57MiB |
|    0   N/A  N/A      2194      G   ...AAAAAAAAA= --shared-files      151MiB |
|    0   N/A  N/A      3319    C+G   ..._64/release/omniverse-kit     2185MiB |
+-----------------------------------------------------------------------------+
2

What’s the isaac sim?
It has a forum at
https://forums.developer.nvidia.com/c/agx-autonomous-machines/isaac/simulation/69

3

Thanks @generix
It is a simulation tool created by NVIDIA.

However, my main concern is the temperature. Is this something normal?
The temperature when its idle is around 34-36.

4

nvidia-smi --query

will show you the valid temperature ranges… i.e.:

Temperature
    GPU Current Temp                  : 35 C
    GPU Shutdown Temp                 : 94 C
    GPU Slowdown Temp                 : 91 C
    GPU Max Operating Temp            : 89 C
    GPU Target Temperature            : 84 C

Your idle temp is perfectly normal.
Some people add additional heat sinks for heavy load scenarios.

1 Like
5

In the gpu process list, there’s still the omniverse-kit running. Since you say, it’s not rendering anything, you should ask in the mentioned forum if this is a bug with the sim.
Running a Turing at 84°C for an extended time is not advisable, the fans only running at 65%.