The tags `sge` and `gridengine` should be merged as they both refer to the family of cluster batch schedulers descended from Sun Grid Engine.  I suggest making `sge` an alias to `gridengine`.  While the Son of Grid Engine fork has picked up the initialization sge its predominantly used generically and the questions currently tagged `sge` are not specific to Son of Grid Engine (indeed one specifically refers to the competing Open Grid Scheduler fork).