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 10.13.247.71 with SMTP id h68mr10700850ywf.140.1497270119593; Mon, 12 Jun 2017 05:21:59 -0700 (PDT) X-Received: by 10.157.21.65 with SMTP id z1mr1292480otz.8.1497270119554; Mon, 12 Jun 2017 05:21:59 -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!2.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!nntp.giganews.com!y44no1194100qth.1!news-out.google.com!m134ni866itb.0!nntp.google.com!185no170950itv.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail Newsgroups: comp.lang.ada Date: Mon, 12 Jun 2017 05:21:58 -0700 (PDT) In-Reply-To: <65c5271c-33a1-4f36-977e-372af449d9c1@googlegroups.com> Complaints-To: groups-abuse@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=86.205.61.6; posting-account=tgpezAoAAAD-u8n1alrr6j55OCPsKllX NNTP-Posting-Host: 86.205.61.6 References: <65c5271c-33a1-4f36-977e-372af449d9c1@googlegroups.com> User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: Subject: Re: Poor performance with GNAT-GPL-2017 From: Emile Injection-Date: Mon, 12 Jun 2017 12:21:59 +0000 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Xref: news.eternal-september.org comp.lang.ada:46935 Date: 2017-06-12T05:21:58-07:00 List-Id: 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 installed= 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 wi= th my private tool: > It solves Rubics Tabgle https://www.jaapsch.net/puzzles/tangle.htm with a= n 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 solutio= ns, > with GNAT-GPL-2017 (gcc 6.3.1) it takes about 0,8 sec to find both soluti= ons, > 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 Is it the 64 Bits Linux version of GNAT which presents this performance slo= w down ?