Clustered solutions dominate the market today with MPP-LSDYNA being used worldwide when 2 or more processors per job are used. Managing compute nodes manually in a cluster is certainly primitive and hence the need for a good resource manager. SLURM is a open source resource manager with lots of good features and is available from the Lawrence Livermore National Laboratory. You can visit their website for more information
LS-OPT has functionalities to interact with SLURM.