(
TERA FLoating point 
OPerations per 
Second)  One trillion floating point operations per second.  In 2007, IBM's BlueGene/L supercomputer, designed for computational science at Lawrence Livermore National Laboratory, was upgraded from 65 thousand to more than a hundred thousand processing nodes, resulting in a peak speed of 596 teraFLOPS.
Human TeraFLOPS
It has been said that the human brain processes 100 teraFLOPS; however, the older one gets, that seems to be a gross exaggeration!
  See 
FLOPS and 
space/time.