 multiplexing was on or off, and
which <b>PAPI</b> events were enabled. In this case 
"Floating point operations executed" were counted. Other preamble contents
include estimates of underlying timing routine (UTR)
overhead, <b>PAPI</b> overhead, and an explanation of the printed
statistics. 
<p>
The statistics themselves begin with the line which reads "Stats for
thread 0:". The region names are listed on the far left. A 
"region" is defined in the application by calling
<b>GPTLstart()</b>, then <b>GPTLstop