I was wondering if anyone knows or has tested on Linux/Ubuntu whether running 2x Nvidia 2080 Ti with the NVLink will allow you to pool the GPU memory such that it appears as 22gb (2x11gb/GPU)? Someone on Reddit posted, “Linux users report NVLink merges two 2080Tis into 1 logical GPU, though their communication is going to be slower…”
From my fairly up-to-date knowledge, NVLink doesn’t merge the GPUs into 1 logical GPU, I’ve never heard of this happen. Even for GPUs such as K80 where it’s 1 physical GPU, they split it into 2 logical GPUs in nvidia-smi / software.
Maybe it merges the 2 GPUs into 1 logical GPU for gaming, such as NVIDIA SLI, but not for CUDA.