........ output from the HEAD .....
      HEAD: 140 wallclock secs (139.73 usr +  0.00 sys = 139.73 CPU) @  0.36/s (n=50)
 ........ output from the HEAD .....
 real_HEAD: 208 wallclock secs (208.00 usr +  0.00 sys = 208.00 CPU) @  0.24/s (n=50)