Re: Similar systems, different performance of fortran code

[michael <linux@networkingnewsletter.org.uk>]

On Fri, 2005-04-22 at 00:42 +0900, Victor Munoz wrote:
>   I recently found a C++ class to measure time spent between lines of code,
> but this is fortran. I don't see the profiling tools I know of (gprof,
> gconv, mpatrol) as able to measure time line by line. Any tool/suggestion to
> do it fortran (which is not my "mother tongue")?

The gprof man page says:

 "--line"
     The -l option enables line-by-line  profiling,  which  causes  his-
     togram  hits to be charged to individual source code lines, instead
     of functions.  If the program was compiled with basic-block  count-
     ing  enabled,  this  option  will also identify how many times each
     line of code was executed.  While line-by-line profiling  can  help
     isolate  where  in a large function a program is spending its time,
     it also significantly increases the running time  of  "gprof",  and
     magnifies statistical inaccuracies.

so if your compilers meet this criteria, away you go! (Hang on, you said
'Fortran' but also 'gcc' did you not...........)