Methods, {HEAD ~ systems}, and mediums are described for scheduling data parallel tasks onto multiple thread execution units of {TAIL ~ processing system} 
Methods , { HEAD ~ systems } , and mediums are described for scheduling data parallel tasks onto multiple thread execution units of { TAIL ~ processing system }
OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL