[Performance] gpu.foundation.plugin acquires IMemoryBudgetManagerFactory 100+ times without caching

[songyuc]

Description

When running Isaac Sim 5.1 in headless rendering mode with --enable_cameras, the following warning is logged:

[Warning] [carb] Client gpu.foundation.plugin has acquired [gpu::unstable::IMemoryBudgetManagerFactory v0.1] 100 times. Consider accessing this interface with carb::getCachedInterface() (Performance warning)

The message suggests that gpu.foundation.plugin is repeatedly acquiring the same Carbonite interface without using carb::getCachedInterface(), which could be optimized.

Environment

• Isaac Sim version: 5.1
• OS: Ubuntu 22.04.4 LTS (Kernel 5.15.0-105-generic)
• GPU: NVIDIA GeForce RTX 4090
• Driver: 580.142
• Graphics API: Vulkan
• Rendering mode: Headless (--headless --enable_cameras)

Steps to Reproduce

1. Run any Isaac Lab task with camera sensors enabled in headless mode, for example:

python my_train_script.py --headless --enable_cameras --task <any-task-with-camera>

2. Observe the warning in the console output during the first environment reset / simulation start.

Expected Behavior

The gpu.foundation.plugin should use carb::getCachedInterface() to avoid redundant interface acquisitions.

Impact

This is a minor performance/cosmetic issue. It does not affect functionality or training results. Filing for awareness and potential cleanup.