Talos II GPU slot preference

[Woof]

I have an odd observation and I'd be interested if others have the same, or it's just a bunch of coincidences. Whilst juggling my PCIe cards around to find room for the Arctic Tern board I moved my graphics card (a WX9100) from CPU 2 to CPU 1, and suddenly the machine feels snappier.

I'm running Debian 11 and CPU 1 appears to be doing most of the work (judging by which runs the hottest) so I'm wondering if that's what makes the difference. I always had the impression the graphics were laggy, but now all of a sudden the system feels a lot more usable. That said, the OS received updates, the internal VGA is now disabled, probably other stuff, and the PSU was replaced (the logs were full of MasterDetectionFailure and I got it down to a PSU fault).

[ClassicHasClass]

Interesting observation. I wonder how one could benchmark that.

[Woof]

I should swap it back in the name of science and see what unscientific feeling it gives me...

I tried a few different AMD cards in the past few weeks too, and wasn't impressed with any until this happy accident.

[rheaplex]

Which kernel are you using with your 9100? I'm having trouble on anything other than 5.5 .

[Woof]

@rheaplex I'll let you know next week (it's at work).

[rheaplex]

Thank you! 

[Woof]

I finally took a look and I'm running with a custom 5.10.92 kernel with patches described here:

https://wiki.raptorcs.com/wiki/Operating_System_Specific_Workarounds/Debian#Debian-Specific_Issues_and_Workarounds

This is something I did at the start of the year and didn't realise I was still on the same old kernel. AFAIK this is fixed already in the upstream.

[rheaplex]

Thank you! I'll try and target that. Have you made any changes to the skiroot kernel, firmware, or configuration?

[Woof]

Only rebuilding the kernel with patches. I've been lazy and plugged in a VGA to HDMI adapter to see the BMC boot, so never got round to what should be the next steps.