Switching circuitry couples {TAIL ~ the execution engines} to {HEAD ~ a plurality} of gather engines, which generate the packets responsive to the gather entries 
Switching circuitry couples { TAIL ~ the execution engines } to { HEAD ~ a plurality } of gather engines , which generate the packets responsive to the gather entries
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH