I’m encountering an issue with Isaac Sim Replicator, where the simulation freezes whenever I attempt to call the writer on more than two cameras during a simulation. Writing RGB images from one camera works as expected.
Isaac Sim Version
4.2.0
GPU Information
- Model: RTX Quadro 8000
How to Reproduce the Issue?
- Open any USD with multiple cameras in it (e.g. jetson.usd or full_warehouse_worker_and_anim_cameras.usd)
- Pick more than two cameras to render the simulation across multiple viewports. This works fine.
- Add these cameras under Synthetic Data Recorder > Writer > Render Products.
- Click Start
- The GUI hangs forever, freezing the simulation.
- Similar outcome occurs when executing ./python.sh standalone_examples/replicator/object_based_sdg/object_based_sdg.py
Error messages
None
It looks like Isaac Sim hangs indefinitely whenever Replicator is involved in writing from multiple sensors simultaneously.