[galaxy-dev] galaxy with SGE cluster

I need some help in configuring galaxy with SGE scheduler using unified method. The galaxy is running on a system distinct from SGE scheduler install. The cluster nodes can access galaxy install, galaxy-tools and dataset files using NFS. I am not sure how drmaa works and how galaxy submits jobs to the cluster/scheduler. Do we need specify some type of connection string or ssh-config to connect with the cluster/scheduler? Does it need any configuration changes on the SGE scheduler side? Any explanation regarding this will be really helpful. -- Thanks, Shantanu.