HPC clusters running the Grid Engine distributed resource manager (job scheduling) software allow jobs to be submitted from a whitelist of ‘submit hosts’. With the ShARC and Iceberg clusters here at the University of Sheffield the per-cluster lists of permitted submit hosts include all login nodes and all worker nodes; for ease of management and security, unmanaged hosts (e.g. researchers' workstations) are not added to the list. If you really want to be able to automate the process of submitting jobs from your own machine then one option is to write a script that logs into the cluster via SSH then submits a job from there.