TTIME(3) LAM LOCAL LIBRARY TTIME(3)NAME
ttime - Get LAM timer value in seconds.
C SYNOPSIS
#include <net.h>
double ttime ();
FORTRAN SYNOPSIS
double precision FTTIME()DESCRIPTION
The ttime() function enables a program running on any LAM node to read
the current value of the system timer in a portable fashion. This is
useful for measuring execution times of program sections. ttime()
returns the timer value in seconds as a double precision floating point
number.
EXAMPLE
#include <stdio.h>
#include <net.h>
double time, start, end;
start = ttime();
my_sub();
end = ttime();
time = end - start;
printf("my_sub took: %f seconds to execute\n", time);
BUGS
The resolution of the measurements is bound by that of the underlying
system timer used.
LAM 7.1.2 March, 2006 TTIME(3)