Gprof may help. http://www.cs.utah.edu/dept/old/texinfo/as/gprof.html Bill Anna Sidera wrote: > Hello, > > I wrote a simulation program in gcc that takes 12 hours to finish and I want to make it faster. Can you tell me any way to find what proportion of the time is spend in each line of the program? (like profile in matlab) > > Thanks, > Anna > > ________________________________________________________________ Please visit a saintly hero: http://www.jakemoore.org