== Speeding up your code ==

1. First you should try to get an idea which routines are consuming most of your CPU time:

 * Rebuild the whole code with "make MODE=prof" (works with ifort and gfortran).
 * Run the code with a sample job card. This will generate an additional file called "gmon.out".
 * After the succesful run, just execute [[BR]]
   {{{
    gprof GiBUU.x gmon.out
   }}} 
   which gives you the amount of consumed CPU time per subroutine.


2. Now comes the hard part: Reducing the run time of the main consumers ...