Command Parser
Detect boundaries between primitive, initiate GE execution
Operation
Round robin scheme of distribution
Tell GE sequencer which GEs are loaded
Passes the address to begin execution, and then issues
Interlock mechanism
GE sequencer
Branching is controlled within separate fields of VWIW
Stall control of GEs independently
>> those GEs not loaded
>> implementing conditional subroutine calls across SIMD
