If you are using a permanent LSF license, check the status of the license server daemon. This check tells if you started your license server daemon.
The lmstat command is in LSF_SERVERDIR. For example:
/usr/share/lsf/cluster_name/8.0/etc/lmstat
The output of lmstat gives the status of:
The license server daemon (lmgrd)
The LSF vendor daemon (lsf_ld)
The number of available licenses for each product in the license file