PBS Issue in Torque

Edit the Pbs file:
 pbs_iff: file not setuid root, likely misconfigured
 pbs_iff: cannot connect to em-research00:15001 - fatal error, errno=13
 (Permissi on denied)
 No Permission.
 qsub: cannot connect to server em-research00 (errno=15007)
The pbs_iff binary must be setuid. Use 'ls -l /usr/local/sbin/pbs_iff'
(substite the correct path for your site's installation) and you should
the 's' user perm and owned by root, for example:

  -rwsr-xr-x 1 root root 16502 Mar 21 19:45 /usr/sbin/pbs_iff

If it isn't setuid root, then fix it with:

Solution:

  chown root:root /path/to/pbs_iff
  chmod 4755 /path/to/pbs_iff
  chmod u+s /usr/local/torque/sbin/pbs_iff