Guang, Shashi Aithal suggested this link to more examples of running parallel jobs in this link. https://www.nersc.gov/users/computational-systems/hopper/running-jobs/examp le-batch-scripts/ John J. Low Principal Computational Science Specialist Computing, Environment and Life Sciences Building 240, 2143 9700 South Cass Avenue Argonne National Laboratory Argonne, IL 60439. 630-252-0045 www.linkedin.com/pub/john-low/15/8b0/5aa/