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From: jonathan <johnscpg@googlemail.com>
Newsgroups: comp.lang.ada
Subject: Re: Ada Shootout program for K-Nucleotide (patches)
Date: Mon, 7 Sep 2009 07:38:37 -0700 (PDT)
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Date: 2009-09-07T07:38:37-07:00
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On Sep 7, 2:31=A0pm, Olivier Scalbert <olivier.scalb...@algosyn.com>
wrote:

> On 64 bits - AMD Athlon(tm) 64 Processor 3000+ - gcc version 4.3.4
> (Debian 4.3.4-1) =B5
> $ gnatmake -f -g -gnatnp -O3 knucleotide.adb -o knucleotide.gnat_run
> $ time ./knucleotide.gnat_run < fasta/fasta250m.dat
> real =A0 =A01m10.190s
> user =A0 =A01m9.252s
> sys =A0 =A0 0m0.724s
> $ valgrind --tool=3Dcallgrind --dump-instr=3Dyes --trace-jump=3Dyes
> ./knucleotide.gnat_run < fasta/fasta25m.dat
>
> see:http://scalbert.dyndns.org/ada/knucleotide/callgrind.out.64bits.1
>
> Olivier

This last test is worrisome.  Are you sharing the machine with other
processes?  Here is what I get when I have 8-cores to myself
(using GNAT 4.3.4 (GPL2009)):

 time ./knucleotide.gnat_run < /tmp/fasta250.dat

 real    0m6.647s
 user    0m17.273s
 sys     0m0.448s

and here is what I get when I share with another (heavy)
user of the machine:

 time ./knucleotide.gnat_run < /tmp/fasta250.dat

 real    0m25.475s
 user    0m24.766s
 sys     0m0.708s


Jonathan