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 10.31.21.83 with SMTP id 80mr19248999vkv.23.1497093813211; Sat, 10 Jun 2017 04:23:33 -0700 (PDT) X-Received: by 10.157.13.169 with SMTP id 38mr1091710ots.6.1497093813167; Sat, 10 Jun 2017 04:23:33 -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!nntp.giganews.com!y44no684925qth.1!news-out.google.com!k7ni3674itk.0!nntp.google.com!67no1074275itx.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail Newsgroups: comp.lang.ada Date: Sat, 10 Jun 2017 04:23:32 -0700 (PDT) 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 User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: <65c5271c-33a1-4f36-977e-372af449d9c1@googlegroups.com> Subject: Poor performance with GNAT-GPL-2017 From: Charly Injection-Date: Sat, 10 Jun 2017 11:23:33 +0000 Content-Type: text/plain; charset="UTF-8" Xref: news.eternal-september.org comp.lang.ada:46932 Date: 2017-06-10T04:23:32-07:00 List-Id: Hi, 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: 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. With GNAT-GPL-2016 (gcc 4.9.4) it took about 0,4 sec to find both solutions, with GNAT-GPL-2017 (gcc 6.3.1) it takes about 0,8 sec to find both solutions, which means the program is slower by a factor of 2. In both cases I use the following options: -O3 -gnatA -gnatn -funroll-loops -fPIC -gnatp -g -gnatW8 -gnatVn -mtune=amdfam10 -gnat12 Any ideas?? Sincerly Charly