Kill Processes using the CLI
In order to kill a job, you must be on the machine on which the job is running, identify the PID of the job and then send the Kill signal to the PID.
In contrast, you can stop a job from any machine, because you are essentially telling the vovserver to tell the vovtasker to kill the job.
You can kill the job using kill directly, but you may find the utility vovkill to be quite useful because it kills not only a process but also all of its children.
In order to identify the PID of the process to kill, you may also consider using the utility vovps to identify the children and parents of a process.
vovkill
This utility is used to kill processes.
vovkill: Usage Message
DESCRIPTION:
This utility is used to kill processes.
It differs from kill because:
- It kills a process and all of its children;
- It can send a list of signals to try to kill a process.
USAGE: vovkill [options] <pid> ...
Kill the given process and all of its children.
The processes are first sent TERM, then HUP, then INT, then KILL.
OPTIONS:
-exclude <pid> -- Exclude pid from list of processes to kill.
-gentle -- Send only HUP.
-n -- Show what you would do, but do not do it.
-pid <pid> -- Process to kill.
-rx <rx> -- Kill processes that match the given rx.
-signal <s> -- Which signal you want to send.
-v -- Increase verbosity.
EXAMPLES:
% vovkill 22123
% vovkill -signal INT 22123
% vovkill -gentle 22123
% vovkill -rx grep -signal 9 223
vovps
vovps lists all processes, similar to the UNIX command ps. It is useful to understand the process hierarchy of Accelerator jobs, and sometimes to find which PIDs to kill in a shell.
The -c and -p options show the child processes and
parent processes respectively of a given pid. The results are a Tcl list of pid,
program name, and owner.
usage: vovps [-an] [-c pid] [-dgsSJj] [-p pid] [-mP]
-a: Print all processes, one per line, like a simple version of 'ps'
-n: Only print pids: must come before -c or -p
-c: Print the children of process <pid>. The printing is in Tcl
format, but it is also easy to parse.
-d: Debug process info collection
-g: Include list of processes with same PGID to children
-s: Include list of processes with same SID to children
-S: Include state of process R,S,T,Z...
-J: Include list of processes with same VOV_JOBID to children
-j: Like -a, but show the VOV_JOBID also and LM_PROJECT instead of
command line
-p: Print the parents of process <pid>. Same format as for -c
-m: Print more detailed memory usage information (Linux).
-P: Use 'ps' program to scan the processes. This behavior can also
be selected by setting the environment variable VOV_USE_PS.Examples
Example 1:
% vovps -a | grep fire
31155 28981 1h06m 0 0 0.00 0.01 bkring vovfire28981.cs
32381 32260 56m35s 977 219 6.45 70.33 bkring firefox% vovps -p $$
set parents(28756) {
28754 "xterm" cadmgr
1 "init" root
}