Isaac Simulation Gate Node - Step parameter issues

Omniverse Isaac Sim
1

I am trying to use the Isaac Simulation Gate Node to throttle down my ROS 1 Camera Helper Node such that I can decrease the frequency at which I publish images from a camera. According to the documentation for Isaac Simulation Gate Node (Attached Here[Core Omnigraph Nodes [omni.isaac.core_nodes] — isaac_sim 4.2.0-rc.17 documentation]) setting the step to be zero should disable the execution of connected nodes but in my case I am still able to see that the ROS 1 camera helper is publishing, in fact irrespective of what the step value is the image seems to be published at the same frequency.

I have tried to place the Simulation Gate Node between the On Playback Tick and Create Render Product as well and have not seen as difference in the outcome.

I have also tried using the Simulation Gate Node with the read IMU node and ROS IMU publisher node and I am not able to see any changes in the publishing frequency with change in step value.

Attaching my action graph structure here for reference:

Screenshot 2024-07-02 21:08:30
Screenshot 2024-07-02 21:08:301920×1080 202 KB

TIA,
Jai

1 Like
2

Same issue

3

Same for me, has anyone found a solution?

4

Could you please create a new topic with the details of your issue and reference this forum thread? It would help in tracking and addressing your specific problem more effectively.

5

@VickNV, sure. I already mentioned it here: Isaac Sim increase rate of /imu topic ROS2 - #8 by yhofmann.
There is also an image of my omnighraph with the gate (the gate was set to 4), as one can see in the plots of the camera and IMU topic both are published at the same (wrong) rate. IMU too low and camera too high.

6

Thanks for providing the link to your existing topic. We’ll continue tracking the issue there.

8

Let me close this topic since it is old and we are tracking the issue in another topic.