a) VGA + USB on the front panel.
In order to ssh into the host , notice the host is going to default to DHCP for Broadcomm LOM Mac address(for example: 00:1f:e2:fd:f4:31) by default.
With the released metal base (PCIe cable still connected), Start sliding the P100 GPU until it “clicks” with PCIe connector.
b) 17.04 Serial console has a bug where it flashes the login screen continuously making it impossible to login. When this happens , the host is still up and functioning properly. Just SSH instead using Host IP to execute your commands.
c) Gen3 link training fails on boot up occasionally and link falls to Gen2. If you want GPU to train Gen3 , reboot until both GPUs train as Gen3 (Check via lspci) . Once link trains to Gen3 speed there are no issues running tests. The issue is only with the training algorithm in processor, once it trains the speed you want, things should be stable.
Logging into host OOB console is important since Ubuntu 17.04 PPC64EL installer may not have ASPEED VGA / Graphics drivers. So you cannot see the install progress through the VGA console.
2) Now type “n” to have add a new boot option.
4) Select and enter “User Item 1” for starting the install. Following which you will go through standard Ubuntu Install process, that you should be familiar with.
Thanks I hope this post helps you Install not just Ubuntu 17.04 but any OS of your choice using Petitboot.