Imtiaz Gandikota
Ansys Employee

The command to run ls-opt in batch mode is, 

/path_to_lsopt_installation_directory/lsopt project_file.lsopt 

The above command is same as running "normal run" using GUI. Therefore, to submit ls-opt process to cluster, create a script and use above batch mode command. This script will run ls-opt process in batch mode and then ls-opt will run ls-dyna jobs on cluster using ls-dyna script that you already have. 

Note that ls-opt process will run on only one node/core, whereas ls-dyna jobs submitted by ls-opt can run on multiple cores.