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 an 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.