Ok, trying it. I'm using a pretty heavily modified 590.48.01 to be able to use those 48G 4090s, they work but they do require a bit of handholding. The main problem is the BAR1 just isn't large enough, it's capped at 32G.
Heh, got it working, thank you so much!!
Overall 30% reduction in wall clock time, that's pretty neat (and I'm still not running this at full power but 450 W is a bit much for that puny connector).
I have two of modded RTX 4090 with 48GB VRAM. But I'm using default drivers. I'm using models, which uses almost full 48GB.
Now i'm curious - am I missing some settings? Do I need to check any of these BAR things?
You're probably not using peer-to-peer then. Try the p2pbandwidthtest that comes with the NV development package to see if you are or not.