Isaac Sim Troubleshooting

Purpose

Diagnose Isaac Sim startup hangs, stage-load stalls, MDL/shader compilation freezes, physics stepping blocks, Replicator/Hydra issues, Nucleus latency, and GPU OOM crashes.

Prerequisites

• Library failures need the configured build or installed package environment.
• Kit/GPU prerequisites apply only to the Kit workload being diagnosed.

Limitations

• Symptom lists are heuristic; root causes can overlap across subsystems.
• Some fixes require local Kit builds or NVIDIA internal-only packages.

Troubleshooting