Hi, Zongze, Thank you for the hint. I set this environment variable and tried just now, but the problem persists. I now have a small cluster of powerful workstations under my control and everything is running properly, so I am not concerned with the remote server managed by a terrible sys admin any more. I’m now using TensorFlow2 because it supports distributed training that can make full use of the cluster. I can’t measure the power of RTX 3090 in training and inference, but I think my cluster should beat it. It’s a pity that the two beast-like RTX 3090’s are just kept idle and getting old simply because the sys admin can’t properly install the driver.