I'm in trouble.I'm running training of neural networks on a remote GPU server.I use screen for that. However, now I have a process on each GPUs but the sockets are lost : $ screen -listNo Sockets found in /var/run/screen/S-usernameEven if I run ps -auxThere is nothing. However, running nvidia-smiI see the PID and the processes running. Though I can't kill them :  PID TTY          TIME CMD28707 pts/1    3-10:23:26 python-bash: kill: (28707) - Operation not permittedI'd like either to reconnect to the processes (there are four like 28707) or to kill them to liberate the GPUs!Please help me.I only have one username and it's a private server, so a priori, those processes are mine. (Besides one is still writing a file, so I'm sure it's mine). pgrep screen 28563 28565 28569 28576 I tried to kill them also, but I can't, information about those processes is:' PID TTY TIME CMD 28565 ? 00:00:00 screen
How to reattach OR kill a lost screen socket
linux;ssh;gnu screen;gpu