Excuse me, I am not able to understand the answer. nvidia-smi behaves normally - some of my chosen GPU’s are occupied at the same level as before in terms of RAM.
The simplest code that creates 3 visible lines with more than 20GB virtual memory taken in htop is here:
import torch
import time

cuda = torch.device('cuda')
A = torch.empty((100, 100), device=cuda).normal_(0.0, 1.0)

time.sleep(5)