You can use the standard `qstat` command as described in the wiki to see what jobs are running. However, 
more information is given by looking at the scheduler’s status. On the main head node, you can run 
`showq` which gives the scheduler’s view of the queue. `sudo showstate` will give you a view of node usage. 

If you need to view an individual job belonging to another user you can do 

`sudo checkjob 123456` (where 123456 is the number of the job). 

This should tell you what nodes it is running on or why it is not 
running. 

You can change the requirements of a job (e.g. walltime) with 

`sudo qalter –l …. 123456`