Issue with HGX A100 in AS-4124GO-NART

Hello Everyone,

I am looking for some help with 8x NVIDIA HGX A100 in supermicro AS-4124GO-NART server.
After install ubuntu on this server i cant see gpu…
lspci | grep nvidia gives me 0 results
after installing nvidia-driver-550 and after typing nvidia-smi i have this:
NVIDIA-SMI has failed because it couldn’t communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.

Has anyone had the same problem? How to solve it?

uname -r = 6.8.0-49-generic

Ubuntu version bellow
PRETTY_NAME=“Ubuntu 22.04.5 LTS”
NAME=“Ubuntu”
VERSION_ID=“22.04”
VERSION=“22.04.5 LTS (Jammy Jellyfish)”
VERSION_CODENAME=jammy
ID=ubuntu
ID_LIKE=debian
HOME_URL=“https://www.ubuntu.com/
SUPPORT_URL=“https://help.ubuntu.com/
BUG_REPORT_URL=“Bugs : Ubuntu
PRIVACY_POLICY_URL=“Data privacy | Ubuntu
UBUNTU_CODENAME=jammy