PBS Exit codes

When your queue job suddenly exits you get an error message like this:

Execution terminated
Exit_status=134
resources_used.cput=00:23:38
resources_used.mem=887816kb
resources_used.vmem=4854528kb
resources_used.walltime=00:01:03

http://www.eresearchsa.edu.au/pbs_exitcodes provides a good resource for the different available error codes.