| Asset Caching | |
| ============= | |
| Assets used in Isaac Lab are hosted on AWS S3 buckets on the cloud. | |
| Asset loading time can depend on your network connection and geographical location. | |
| In some cases, it is possible that asset loading times can be long when assets are pulled from the AWS servers. | |
| If you run into cases where assets take a few minutes to load for each run, | |
| we recommend enabling asset caching following the below steps. | |
| First, launch the Isaac Sim application: | |
| .. tab-set:: | |
| :sync-group: os | |
| .. tab-item:: :icon:`fa-brands fa-linux` Linux | |
| :sync: linux | |
| .. code:: bash | |
| ./isaaclab.sh -s | |
| .. tab-item:: :icon:`fa-brands fa-windows` Windows | |
| :sync: windows | |
| .. code:: batch | |
| isaaclab.bat -s | |
| On the top right of the Isaac Lab or Isaac Sim app, look for the icon labeled ``CACHE:``. | |
| You may see a message such as ``HUB NOT DETECTED`` or ``NEW VERSION DETECTED``. | |
| Click the message to enable `Hub <https://docs.omniverse.nvidia.com/utilities/latest/cache/hub-workstation.html>`_. | |
| Hub automatically manages local caching for Isaac Lab assets, so subsequent runs will use cached files instead of | |
| downloading from AWS each time. | |
| .. figure:: /source/_static/setup/asset_caching.jpg | |
| :align: center | |
| :figwidth: 100% | |
| :alt: Simulator with cache messaging. | |
| Hub provides better control and management of cached assets, making workflows faster and more reliable, especially | |
| in environments with limited or intermittent internet access. | |
| .. note:: | |
| The first time you run Isaac Lab, assets will still need to be pulled from the cloud, which could lead | |
| to longer loading times. Once cached, loading times will be significantly reduced on subsequent runs. | |
| Nucleus | |
| ------- | |
| Before Isaac Sim 4.5, assets were accessed via the Omniverse Nucleus server, including setups with local Nucleus instances. | |
| .. warning:: | |
| Starting with Isaac Sim 4.5, the Omniverse Nucleus server and Omniverse Launcher are deprecated. | |
| Existing Nucleus setups will continue to work, so if you have a local Nucleus server already configured, | |
| you may continue to use it. | |