System memory fallback and estimation of GPU memory

Accelerated Computing CUDA CUDA Programming and Performance
1

The function cuMemGetInfo() can be used to get the free and total memory of GPU. Will the outputs of the function somehow be influenced by the enabling or disabling of system memory fallback (for stable diffusion)?

2

Is the fallback a stable diffusion feature?

3

I believe the reference is to a windows GPU driver feature.

4

Yes. I mentioned stable diffusion for easy identification.

5

Any updates regarding the above mentioned question?