Compare times to run a program

rpd25 · 01-29-2012, 11:43 PM

Hi,

I have a fortran program with serial and MPI version. I want to compare the time taken by these programs to run. I use ifort/gfortran compiler.

How to compare the time taken by each program to run? Is there any sample code for comparison?

Thanks,
Rakesh

evo2 · 01-30-2012, 05:27 PM

Hi,

i you just want the total execution time, you could use the have you tried using the "time" command on the command line.

Eg.

Code:

time program

If you want actual profiling, you could try using valgrind with the callgrind or cachegrind tools. You can view the output of valgrind with the kcachegrind gui.

HTH,

Evo2.