Two GeForce RTX 2080Ti installing NVLink ,How Configuration?

Two GeForce RTX 2080Ti installing NVLink ,How Configuration ubuntu 16.04?
BIOS or Nvlink drive?
please help me.
Thanks!

Upgrade to the latest Ubuntu hwe stack:
[url]https://wiki.ubuntu.com/Kernel/LTSEnablementStack[/url]
Afterwards,