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NVLink / total VRAM

Posted: Thu Mar 11, 2021 12:47 pm
by khomatech
Hi,

I have 2x 2080Ti connected via NVLink, SLI is enabled. Both monitors are on card 1, card 2 is free. I've set up both cards to be each other's peers, hoping to get 22GB of total VRAM. Unfortunately, it's still showing 11GB total.

What am I missing?

Thanks in advance.

Re: NVLink / total VRAM

Posted: Fri Mar 12, 2021 8:44 am
by bepeg4d
Hi,
you need to consider NvLink like Out-of-core, but instead of moving part of geometry into system RAM, it uses the other GPU VRAM to store the data.
So it is always 11GB + extra NvLink peer memory.

ciao Beppe