We can add HPC cluster compute nodes to our Condor pools!
- Traditional HPC systems use a batch system such as SGE, PBS or LSF.
 - Such batch systems can happily co-exist with Condor.
 - Condor executes jobs on all compute nodes:
    
    - SGE/PBS/LSF unaware of Condor;
    
 - whenever SGE runs jobs on a compute node, Condor suspends/vacates.
    
 
 
Requires a little networking sneakiness.