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Date: Thu, 03 Sep 2009 17:13:56 +0200
From: Olivier Scalbert <olivier.scalbert@algosyn.com>
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Subject: Re: Ada Shootout program for K-Nucleotide (patches)
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Date: 2009-09-03T17:13:56+02:00
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Ludovic Brenta wrote:

> You enabled front-end inlining with -gnatN; GNAT turned the whole
> program into one procedure. Even then, it should be possible to run
> the program under valgrind's callgrind tool to get accurate, per-line
> (indeed per-instruction) execution costs. I don't know whether gprof
> has such granularity or not.
> 
> --
> Ludovic Brenta.

Thanks Ludovic.

I will try callgrind tomorrow.

Anyway with:
$ gnatmake -pg -f knucleotide.adb -o knucleotide.gnat_run

I still have:
$ gprof -b ./knucleotide.gnat_run
Flat profile:

Each sample counts as 0.01 seconds.
   %   cumulative   self              self     total
  time   seconds   seconds    calls   s/call   s/call  name
100.00     24.30    24.30        1    24.30    24.30  _ada_knucleotide
   0.00     24.30     0.00        1     0.00     0.00  adainit


			Call graph


granularity: each sample hit covers 4 byte(s) for 0.04% of 24.30 seconds

index % time    self  children    called     name
                                                  <spontaneous>
[1]    100.0    0.00   24.30                 main [1]
                24.30    0.00       1/1           _ada_knucleotide [2]
                 0.00    0.00       1/1           adainit [3]
-----------------------------------------------
                              306009664             _ada_knucleotide [2]
                24.30    0.00       1/1           main [1]
[2]    100.0   24.30    0.00       1+306009664 _ada_knucleotide [2]
                              306009664             _ada_knucleotide [2]
-----------------------------------------------
                 0.00    0.00       1/1           main [1]
[3]      0.0    0.00    0.00       1         adainit [3]
-----------------------------------------------


Index by function name

    [2] _ada_knucleotide        [3] adainit

So, no more details yet ...

Olivier