What's the role of NGX?

Hi,

I have a question about NGX. I am running Apptainer/Singularity version of Isaac sim docker (because HPC doesn’t allow dockers), and I get this error when starting Isaac sim app:

2024-10-14 01:53:31 [5,674ms] [Warning] [carb.graphics-vulkan.plugin] Trying to initialize NGX without vkGetInstanceProcAddr and vkGetDeviceProcAddr pointer-to-functions.
2024-10-14 01:53:31 [5,674ms] [Error] [carb.graphics-vulkan.plugin] Could not get NGX parameters block because NGX isn’t enabled.
2024-10-14 01:53:31 [5,674ms] [Error] [carb.graphics-vulkan.plugin] Failed to create NGX context.
2024-10-14 01:53:31 [5,674ms] [Warning] [carb.scenerenderer-rtx.plugin] Failed to create NGX context.

Seems like this is due to no support for Singulartiy containers: IsaacSim livestreaming container with 525.125 driver

What does this error imply? It seems to me as if my application is running as expected :)

Are you using the Isaac Sim container? If not, which container are you using? Could you please refer to the Container Installation documentation?

Yeah, it’s not an issue with the Isaac sim docker container. That docker container works perfectly. The issue is that our university HPC center doesn’t support dockers, so I have to convert it to a different type of container they support: Apptainer. Then, when running that Apptainer/Singularity container, the NGX doesn’t load. My application, nevertheless, seems ok; I just wonder what this error implies. What’s the role of NGX in Isaac Sim?

First, it’s important to note that Singularity containers are not officially supported for Isaac Sim. This can lead to some compatibility issues, such as the ones you’re experiencing with NGX initialization.

The error messages you’re seeing indicate that the application is unable to properly initialize the NVIDIA NGX framework, which is used for various AI-enhanced graphics features. However, as you’ve observed, it seems that your application is still running as expected despite these warnings.

The root cause of these errors could be related to several factors:

  • Driver compatibility: Ensure that the NVIDIA driver version in your container environment is compatible with the host system and better following the system requirements.
  • GPU type: Some features may not be available or may behave differently depending on the specific GPU model you’re using.
  • Container configuration: While the NVIDIA Container Toolkit is primarily used for Docker containers, similar considerations for GPU passthrough apply to Singularity containers.

To troubleshoot this issue, you could try the following:

  • Verify that your GPU drivers are correctly installed
  • Ensure that you’re using the --nv flag when running your Singularity container to enable NVIDIA GPU support.
  • Test with a simple Vulkan application to confirm if the issue is specific to Isaac Sim or if it’s a more general GPU access problem within the container.

Thank you for pointing out potential errors and steps how to troubleshoot. I acknowledge that Singularity containers are not officially supported for Isaac Sim and that I’m in muddy water here :)

Can you elaborate further on what NGX is used for? You mentioned various AI-enhanced graphics features. Does that mean e.g. rendering of the camera sensor is not supported or that it renders slower? or that it renders differently, i.e. the output will be different when NGX is (not) used.

NGX is used for DLSS (Deep Learning Super Sampling), which affects the performance and functionality of RTX real-time mode. Without NGX, it cannot function properly.

Is it fair to say that NGX is for rendering / visualizing the simulation and collisions API and camera sensors (depth only) will work fine without it?

I made sure I can run vulkaninfo successfully, but the error persists:

2024-10-17 00:40:09 [19,367ms] [Warning] [carb.graphics-vulkan.plugin] Trying to initialize NGX without vkGetInstanceProcAddr and vkGetDeviceProcAddr pointer-to-functions.
2024-10-17 00:40:09 [19,367ms] [Error] [carb.graphics-vulkan.plugin] Could not get NGX parameters block because NGX isn't enabled.
2024-10-17 00:40:09 [19,367ms] [Error] [carb.graphics-vulkan.plugin] Failed to create NGX context.
2024-10-17 00:40:09 [19,367ms] [Warning] [carb.scenerenderer-rtx.plugin] Failed to create NGX context.

Does by any chance this container require X?

Please also provide information on the driver versions, GPU type, and NVIDIA container toolkit.

Driver Version: 550.54.14
CUDA Version: 12.4
NVIDIA RTX 6000 Ada

I’m using --nv flag when running the Apptainer and don’t have nvidia-ctk. I tried the experimental version of using --nvccli but that didn’t start the container successfully

What is the HPC server you’re using?

“Rocky Linux 8.8”, which is equivalent to RHEL 8.8.

Your system does not meet the system requirements. It has not been tested or covered by us.

Do you have the complete log?

I know, but not even the docker image is running on Ubuntu, so I think everything should work nevertheless.

Here’s the log (headless mode, running my app on the university’s HPC system):

[Info] [carb] Logging to file: /isaac-sim/kit/logs/Kit/Isaac-Sim/4.2/kit_20241101_173753.log

2024-11-01 23:37:53 [0ms] [Warning] [omni.kit.app.plugin] No crash reporter present, dumps uploading isn’t available.

2024-11-01 23:37:53 [3ms] [Warning] [omni.ext.plugin] [ext: pycache] Extensions config ‘extension.toml’ doesn’t exist ‘/uufs/chpc.utah.edu/common/home/u1295595/grasp_regression/src/data_collection/pycache’ or ‘/uufs/chpc.utah.edu/common/home/u1295595/grasp_regression/src/data_collection/pycache/config

2024-11-01 23:37:53 [3ms] [Warning] [omni.ext.plugin] [ext: heuristic] Extensions config ‘extension.toml’ doesn’t exist ‘/uufs/chpc.utah.edu/common/home/u1295595/grasp_regression/src/data_collection/heuristic’ or ‘/uufs/chpc.utah.edu/common/home/u1295595/grasp_regression/src/data_collection/heuristic/config

2024-11-01 23:37:53 [3ms] [Warning] [omni.ext.plugin] [ext: manual] Extensions config ‘extension.toml’ doesn’t exist ‘/uufs/chpc.utah.edu/common/home/u1295595/grasp_regression/src/data_collection/manual’ or ‘/uufs/chpc.utah.edu/common/home/u1295595/grasp_regression/src/data_collection/manual/config

2024-11-01 23:37:53 [3ms] [Warning] [omni.ext.plugin] [ext: deprecated] Extensions config ‘extension.toml’ doesn’t exist ‘/uufs/chpc.utah.edu/common/home/u1295595/grasp_regression/src/data_collection/deprecated’ or ‘/uufs/chpc.utah.edu/common/home/u1295595/grasp_regression/src/data_collection/deprecated/config

2024-11-01 23:37:53 [3ms] [Warning] [omni.ext.plugin] [ext: dataset] Extensions config ‘extension.toml’ doesn’t exist ‘/uufs/chpc.utah.edu/common/home/u1295595/grasp_regression/src/data_collection/dataset’ or ‘/uufs/chpc.utah.edu/common/home/u1295595/grasp_regression/src/data_collection/dataset/config

2024-11-01 23:37:53 [4ms] [Warning] [omni.ext.plugin] [ext: vectorized_scripts] Extensions config ‘extension.toml’ doesn’t exist ‘/uufs/chpc.utah.edu/common/home/u1295595/grasp_regression/src/data_collection/vectorized_scripts’ or ‘/uufs/chpc.utah.edu/common/home/u1295595/grasp_regression/src/data_collection/vectorized_scripts/config

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2024-11-01 23:37:55 [2,575ms] [Warning] [carb.cudainterop.plugin] Setting CUDA_VISIBLE_DEVICES can lead to undesired behavior or crashes.

---------------------------------------------------------------------------------------------|

Driver Version: 550.54.14 | Graphics API: Vulkan

=============================================================================================|

GPU | Name | Active | LDA | GPU Memory | Vendor-ID | LUID |

Device-ID | UUID |

Bus-ID | |

---------------------------------------------------------------------------------------------|

0 | NVIDIA RTX 6000 Ada Generation | Yes: 0 | | 49386 MB | 10de | 0 |

26b1 | 98cb9653… |

9d | |

=============================================================================================|

OS: 22.04.3 LTS (Jammy Jellyfish) ubuntu, Version: 22.04.3, Kernel: 4.18.0-477.15.1.el8_8.x86_64

Processor: Intel(R) Xeon(R) Platinum 8462Y+ | Cores: 64 | Logical: 128

---------------------------------------------------------------------------------------------|

Total Memory (MB): 2063719 | Free Memory: 2025729

Total Page/Swap (MB): 524287 | Free Page/Swap: 524287

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[9.818s] [ext: omni.kit.window.material_graph-1.8.18] startup

[9.868s] [ext: omni.isaac.dynamic_control-1.3.8] startup

[9.884s] [ext: omni.replicator.core-1.11.20] startup

2024-11-01 23:38:02 [9,781ms] [Warning] [omni.replicator.core.scripts.annotators] Annotator PostProcessDispatch is already registered, overwriting annotator template

[10.417s] [ext: omni.isaac.lula-3.0.1] startup

[10.476s] [ext: omni.isaac.surface_gripper-1.0.1] startup

[10.484s] [ext: omni.isaac.core_nodes-1.16.3] startup

[10.520s] [ext: omni.isaac.motion_generation-7.1.0] startup

[10.537s] [ext: omni.isaac.manipulators-2.1.0] startup

[10.546s] [ext: omni.isaac.franka-0.4.1] startup

[10.553s] [ext: omni.kit.graph.widget.variables-2.1.0] startup

[10.562s] [ext: omni.kit.graph.delegate.modern-1.10.6] startup

[10.576s] [ext: omni.isaac.cortex-0.3.9] startup

[10.581s] [ext: omni.graph.window.core-1.113.1] startup

[10.638s] [ext: omni.isaac.wheeled_robots-2.3.3] startup

[10.669s] [ext: omni.isaac.cortex.sample_behaviors-1.0.6] startup

[10.672s] [ext: omni.graph.window.generic-1.26.0] startup

[10.689s] [ext: omni.isaac.menu-0.7.3] startup

[10.697s] [ext: omni.kit.widget.live-2.1.8] startup

[10.707s] [ext: omni.kit.actions.window-1.1.1] startup

[10.721s] [ext: omni.kit.widget.cache_indicator-2.0.10] startup

2024-11-01 23:38:03 [10,677ms] [Warning] [omni.kit.widget.cache_indicator.cache_state_menu] Unable to detect Omniverse Cache Server. File /uufs/chpc.utah.edu/common/home/u1295595/.nvidia-omniverse/config/omniverse.toml is not found. Consider installing it for better IO performance.

[10.841s] [ext: omni.kit.hotkeys.window-1.4.5] startup

[10.861s] [ext: omni.kit.ui.actions-1.0.2] startup

[10.865s] [ext: omni.kit.widget.stage_icons-1.0.5] startup

[10.869s] [ext: omni.kit.menu.common-1.1.7] startup

[10.875s] [ext: omni.kit.selection-0.1.4] startup

[10.881s] [ext: omni.isaac.kit-1.13.2] startup

[10.882s] [ext: omni.isaac.block_world-1.0.0] startup

[10.885s] [ext: omni.kit.window.stage-2.5.10] startup

[10.890s] [ext: omni.isaac.debug_draw-1.1.0] startup

[10.900s] [ext: omni.kit.menu.edit-1.1.24] startup

[10.906s] [ext: omni.kit.menu.file-1.1.14] startup

[10.908s] [ext: omni.kit.profiler.window-2.2.3] startup

[10.937s] [ext: omni.kit.menu.stage-1.2.5] startup

[10.940s] [ext: omni.isaac.occupancy_map-1.0.3] startup

[10.952s] [ext: omni.importer.mjcf-1.1.1] startup

[10.984s] [ext: omni.graph.window.action-1.28.0] startup

[10.992s] [ext: omni.kit.property.camera-1.0.8] startup

[10.995s] [ext: omni.kit.property.light-1.0.10] startup

[10.998s] [ext: omni.kit.property.geometry-1.3.1] startup

[11.003s] [ext: omni.hydra.scene_api-0.1.2] startup

[11.011s] [ext: omni.kit.property.audio-1.0.14] startup

[11.015s] [ext: omni.kit.property.render-1.1.2] startup

[11.018s] [ext: omni.kit.property.transform-1.5.9] startup

[11.022s] [ext: omni.kit.property.material-1.10.8] startup

[11.029s] [ext: omni.kit.widget.layers-1.8.0] startup

[11.044s] [ext: omni.kit.property.isaac-0.2.3] startup

[11.048s] [ext: omni.kit.property.bundle-1.3.1] startup

[11.049s] [ext: omni.sensors.nv.common-1.2.2-isaac-1] startup

[11.261s] [ext: omni.kit.property.layer-1.1.8] startup

[11.264s] [ext: omni.kit.stage_column.payload-2.0.0] startup

[11.267s] [ext: omni.isaac.scene_blox-0.1.2] startup

[11.268s] [ext: omni.sensors.nv.materials-1.2.1-isaac-1] startup

[11.287s] [ext: omni.sensors.nv.wpm-1.2.1-isaac-1] startup

[11.301s] [ext: omni.kit.viewport.actions-106.0.2] startup

[11.305s] [ext: omni.sensors.nv.lidar-1.2.2-isaac-1] startup

[11.328s] [ext: omni.sensors.nv.radar-1.2.1-isaac-1] startup

[11.350s] [ext: omni.kit.viewport.menubar.display-107.0.2] startup

[11.353s] [ext: omni.kit.manipulator.transform-104.7.4] startup

[11.358s] [ext: omni.kit.widget.toolbar-1.7.2] startup

[11.365s] [ext: omni.sensors.tiled-0.0.6] startup

[11.372s] [ext: omni.sensors.nv.ids-1.1.0-isaac-1] startup

[11.385s] [ext: omni.isaac.range_sensor-3.1.2] startup

[11.409s] [ext: omni.usdphysics.ui-106.1.9] startup

[11.437s] [ext: omni.physx.commands-106.1.9] startup

[11.442s] [ext: omni.kit.manipulator.tool.snap-1.5.11] startup

[11.451s] [ext: omni.isaac.sensor-12.9.1] startup

[11.534s] [ext: omni.kit.manipulator.selector-1.1.1] startup

[11.538s] [ext: omni.physx.ui-106.1.9] startup

[11.596s] [ext: omni.isaac.quadruped-2.0.1] startup

[11.605s] [ext: omni.kit.viewport.manipulator.transform-107.0.2] startup

[11.608s] [ext: omni.physx.demos-106.1.9] startup

[11.633s] [ext: omni.kit.property.physx-106.1.9] startup

[11.734s] [ext: omni.kit.widget.calendar-1.0.8] startup

[11.738s] [ext: omni.kit.manipulator.prim.core-107.0.4] startup

[11.748s] [ext: omni.fabric.commands-1.1.5] startup

[11.753s] [ext: omni.physx.vehicle-106.1.9] startup

[11.782s] [ext: omni.kit.widget.extended_searchfield-1.0.28] startup

[11.792s] [ext: omni.kit.manipulator.prim.fabric-107.0.3] startup

[11.796s] [ext: omni.kit.manipulator.prim.usd-107.0.2] startup

[11.798s] [ext: omni.kit.widget.timeline-105.0.1] startup

[11.802s] [ext: omni.kit.window.commands-0.2.6] startup

[11.805s] [ext: omni.physx.camera-106.1.9] startup

[11.822s] [ext: omni.kit.manipulator.camera-105.0.5] startup

[11.828s] [ext: omni.kit.viewport.menubar.camera-107.0.2] startup

[11.834s] [ext: omni.kit.manipulator.prim-107.0.0] startup

[11.835s] [ext: omni.kit.manipulator.selection-106.0.1] startup

[11.838s] [ext: omni.kit.window.toolbar-1.6.1] startup

[11.842s] [ext: omni.kit.stage_column.variant-1.0.13] startup

[11.844s] [ext: omni.kit.viewport.menubar.render-106.1.1] startup

[11.849s] [ext: omni.kit.viewport.menubar.settings-107.0.3] startup

[11.857s] [ext: omni.physx.cct-106.1.9] startup

[11.875s] [ext: omni.physx.graph-106.1.9] startup

[11.913s] [ext: omni.physx.supportui-106.1.9] startup

[11.941s] [ext: omni.physx.telemetry-106.1.9] startup

[11.945s] [ext: omni.graph.ui_nodes-1.26.0] startup

[11.960s] [ext: omni.kit.viewport.bundle-104.0.1] startup

[11.961s] [ext: omni.isaac.universal_robots-0.3.5] startup

[11.965s] [ext: omni.kit.window.console-0.2.13] startup

[11.980s] [ext: omni.kit.window.script_editor-1.7.6] startup

[11.990s] [ext: omni.kit.menu.create-1.0.16] startup

[11.996s] [ext: omni.graph.bundle.action-2.4.1] startup

[11.998s] [ext: omni.physx.bundle-106.1.9] startup

[11.999s] [ext: omni.rtx.window.settings-0.6.17] startup

[12.006s] [ext: omni.kit.window.status_bar-0.1.7] startup

[12.012s] [ext: omni.kit.window.title-1.1.5] startup

[12.014s] [ext: omni.replicator.isaac-1.15.2] startup

[12.054s] [ext: omni.replicator.replicator_yaml-2.0.6] startup

[12.077s] [ext: omni.rtx.settings.core-0.6.3] startup

[12.088s] [ext: omni.kit.viewport.menubar.lighting-106.0.2] startup

[12.099s] [ext: semantics.schema.editor-0.3.8] startup

[12.108s] [ext: semantics.schema.property-1.0.4] startup

[12.111s] [ext: omni.kit.viewport.rtx-104.0.1] startup

[12.112s] [ext: omni.isaac.utils-1.0.1] startup

[12.117s] [ext: omni.isaac.cloner-0.8.1] startup

[12.120s] [ext: omni.importer.urdf-1.14.1] startup

[12.171s] [ext: omni.kit.window.stats-0.1.6] startup

[12.177s] [ext: omni.isaac.sim.python-4.2.0] startup

[12.180s] Simulation App Starting

2024-11-01 23:38:05 [12,765ms] [Warning] [omni.kvdb.plugin] Disabling key-value database because another kit process is locking it

2024-11-01 23:38:06 [13,444ms] [Warning] [carb.graphics-vulkan.plugin] Trying to initialize NGX without vkGetInstanceProcAddr and vkGetDeviceProcAddr pointer-to-functions.

2024-11-01 23:38:06 [13,449ms] [Error] [carb.graphics-vulkan.plugin] Could not get NGX parameters block because NGX isn’t enabled.

2024-11-01 23:38:06 [13,449ms] [Error] [carb.graphics-vulkan.plugin] Failed to create NGX context.

2024-11-01 23:38:06 [13,449ms] [Warning] [carb.scenerenderer-rtx.plugin] Failed to create NGX context.

[18.370s] app ready