In case you're curious, I googled. It runs this thing called "DGX OS":
"DGX OS 6 Features The following are the key features of DGX OS Release 6:
Based on Ubuntu 22.04 with the latest long-term Linux kernel version 5.15 for the recent hardware and security updates and updates to software packages, such as Python and GCC.
Includes the NVIDIA-optimized Linux kernel, which supports GPU Direct Storage (GDS) without additional patches.
Provides access to all NVIDIA GPU driver branches and CUDA toolkit versions.
Uses the Ubuntu OFED by default with the option to install NVIDIA OFED for additional features.
Supports Secure Boot (requires Ubuntu OFED).
Supports DGX H100/H200."
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