How to activate RTX GPU usage in Isaac Sim?

Isaac Sim Version

[V] 4.2.0

Operating System

[V] Windows 11

GPU Information

  • Model: RTX 4080 Laptop
  • Driver Version: 555.97

Topic Description

Detailed Description

I build up a crystal structure to mimic silicon substrate and use another single sphere above the crystal structure to hit it in order to simulate ion implantation process. But when I press run, I found that GPU resource are not been used. How to activate RTX GPU to be used when I press run in isaac sim?

Screenshots or Videos

(Background black one is Isaac Sim, and white one is GPU usage)

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(adding up GPU usage screen record)

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Have you used the nvidia-smi -l 1 command to monitor GPU utilization? Have you experienced this issue with any demo scenes? If yes, could you please specify which demo scene?

I just tried “nvidia-smi -l 1” in command window, and I found an interesting thing. As shown in the screen video record below, we can see that when I did nothing before I pressed start, in nvidia-sim, GPU usage was around 46% (which was different from the GPU usage monitor system in windows system, but anyway). When I pressed start, weired thing happened, the GPU usage shown in nvidia-sim was “decreased” !!!, and when I pressed stop, the GPU usage increased to 88% and then decreased to usage before I pressed start.

How to explain this phenomenon? Did I really active RTX 4080 GPU?

Btw, I tried my own usd file from my project. If needed, you can access this usd file from https://drive.google.com/file/d/1IkARH2HS381EsE4OL3f1cOYijJiv_b_X/view?usp=drive_link