CPU  LIMIT  NOTE

If you running a task that requires more than 20 minutes
of cpu time, you will need to change your cpu time limit
from it's default of 20 minutes (1200 seconds).

A temporary cpu time limit change may be made by
typing at the shell, cpulimit (time in seconds),
i.e, to change the time limit to 60 minutes, (3600 seconds),
type cpulimit 3600. 

For further information,  click here.