From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM autolearn=unavailable autolearn_force=no version=3.4.4 X-Received: by 10.200.9.84 with SMTP id z20mr735114qth.67.1497291755319; Mon, 12 Jun 2017 11:22:35 -0700 (PDT) X-Received: by 10.157.84.36 with SMTP id j36mr38285oth.9.1497291755267; Mon, 12 Jun 2017 11:22:35 -0700 (PDT) Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!news.eternal-september.org!feeder.eternal-september.org!1.eu.feeder.erje.net!feeder.erje.net!2.us.feeder.erje.net!weretis.net!feeder6.news.weretis.net!feeder.usenetexpress.com!feeder1.iad1.usenetexpress.com!border1.nntp.dca1.giganews.com!border2.nntp.dca1.giganews.com!nntp.giganews.com!y44no1289800qth.1!news-out.google.com!m134ni1109itb.0!nntp.google.com!185no333315itv.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail Newsgroups: comp.lang.ada Date: Mon, 12 Jun 2017 11:22:34 -0700 (PDT) In-Reply-To: Complaints-To: groups-abuse@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=2003:e0:abd9:66fd:96de:80ff:fea6:6d64; posting-account=5zx--goAAAD06H29EnWQGKTO-gctuXHl NNTP-Posting-Host: 2003:e0:abd9:66fd:96de:80ff:fea6:6d64 References: <65c5271c-33a1-4f36-977e-372af449d9c1@googlegroups.com> User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: <1d84e860-6563-4e55-83ca-91be59b9c562@googlegroups.com> Subject: Re: Poor performance with GNAT-GPL-2017 From: Charly Injection-Date: Mon, 12 Jun 2017 18:22:35 +0000 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Xref: news.eternal-september.org comp.lang.ada:46937 Date: 2017-06-12T11:22:34-07:00 List-Id: Am Montag, 12. Juni 2017 14:22:00 UTC+2 schrieb Emile: > Le samedi 10 juin 2017 13:23:34 UTC+2, Charly a =C3=A9crit=C2=A0: > > Hi, > >=20 > > when I found the new GNAT-GPL-2017 this morning I was happy and install= ed it at once. > > But I was rather disappointed about the poor performance. > > To be more precise: > >=20 > > When I switch to new hard- or software I allways check the performance = with my private tool: > > It solves Rubics Tabgle https://www.jaapsch.net/puzzles/tangle.htm with= an ada programm, using one task per core. > >=20 > > With GNAT-GPL-2016 (gcc 4.9.4) it took about 0,4 sec to find both solut= ions, > > with GNAT-GPL-2017 (gcc 6.3.1) it takes about 0,8 sec to find both solu= tions, > > which means the program is slower by a factor of 2. > >=20 > > In both cases I use the following options:=20 > > -O3 -gnatA -gnatn -funroll-loops -fPIC -gnatp -g -gnatW8 -gnatVn -mtune= =3Damdfam10 -gnat12 > >=20 > > Any ideas?? > >=20 > > Sincerly > > Charly >=20 > Is it the 64 Bits Linux version of GNAT which presents this performance s= low down ? Yes, Xubuntu GNU/Linux with Kernel 4.10 on AMD FX 8350 (8 cores)