1. A processing device comprising: a first execution unit; a second execution unit; and a front-end unit coupled to the first execution unit via a first dispatch bus and coupled to the second execution unit via a second dispatch bus separate from the first dispatch bus, the first dispatch bus configured to concurrently transmit a first dispatch group of up to N instruction operations from the front-end unit to the first execution unit for a dispatch cycle and the second dispatch bus configured to concurrently transmit a second dispatch group of up to N instruction operations from the front-end unit to the second execution unit for the dispatch cycle.