By partitioning data into segments and by defining checkpoints based upon {TAIL ~ the segmentation}, {HEAD ~ a process} may be restarted at each defined checkpoint 
By partitioning data into segments and by defining checkpoints based upon { TAIL ~ the segmentation } , { HEAD ~ a process } may be restarted at each defined checkpoint
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH