BAR1 Memory Size A10 / A4000 / A5000 / A6000

I would like to know what the expected values for BAR1 memory size are for A10 / A4000 / A5000 and A6000 GPUs, as seen with nvidia-smi -q:

    BAR1 Memory Usage
        Total                             : 8192 MiB
        Used                              : 7 MiB
        Free                              : 8185 MiB

On my A4000 it’s just 256 MB, however on my RTX 3060 it’s 8 GB (as seen above). I would assume a workstation GPU to have a higher BAR1 size also?

I plan to use gdrcopy (GitHub - NVIDIA/gdrcopy: A fast GPU memory copy library based on NVIDIA GPUDirect RDMA technology), but I need more than 2 GB BAR1 size to make it work. Hence I’m looking at other GPUs too now, but it seems impossible to find this information anywhere…

Anyone can help out?