Measuring elapsed time in a Fortran program

You can find out how long your program has been running by calling the built-in etime() function. This includes only time spent running your program, regardless of what else is running on the same processor. The time is reported in seconds, in three parts:

• User time, time actually spent in your program;
• System time, time spent in the operating system on your program's behalf; and
• Total time.

To measure elapsed time, declare a real*4 array with two elements, and pass that array as an argument to etime. The first element of the array will be set to the user time, the second element will be set to the system time, and the etime() function will return the total time.

Last updated: 2001/02/01 00:14:23 UT
URL: http://www.nmt.edu/tcc/help/lang/fortran/elapsed.html