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| From | Melzzzzz <mel@zzzzz.invalid> |
| Newsgroups | comp.programming.threads |
| Subject | Re: About scimark2 ... |
| Date | Sat, 7 Jun 2014 01:58:43 +0200 |
| Organization | None |
| Lines | 29 |
| Message-ID | <lmtkjj$fgk$6@solani.org> (permalink) |
| References | <lmt7tq$7jv$2@news.albasani.net> <lmtad8$kds$5@solani.org> <lmtcjl$h3v$1@news.albasani.net> <20140606155957.393@kylheku.com> |
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On Fri, 6 Jun 2014 23:11:59 +0000 (UTC) Kaz Kylheku <kaz@kylheku.com> wrote: > On 2014-06-06, aminer <aminer@toto.net> wrote: > > I have benchmarked Delphi and FreePascal against GCC C++ > > and Microsoft C+ on scimark2, and i have found that without the GCC > > -Ox optimization options the auto-vectorization will not be enabled > > so Delphi and FreePascal and GCC C++ scored the same speed on > > scimark2, but when you give -O1 or -O2, GCC C++ uses > > auto-vectorization and it scores almost 2X times the speed of > > Freepascal or Delphi on scimark2 on x86. > > Without -O the GNU compilers do not optimize at all. The generated > code is quite bad. I think that gcc performs auto vectorization only at -O3 . > > If removing -O options brings the performance down to Delphi, and a > mere -O1 can beat Delphi, that suggests that Delphi doesn't optimize, > at least with regard to the program being tested. > > Or something else is wrong, which makes the programs not comparable. Most probably pascal benchmark uses more complex code. Eg OO features... -- Click OK to continue...
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About scimark2 ... aminer <aminer@toto.net> - 2014-06-06 04:22 -0700
Re: About scimark2 ... aminer <aminer@toto.net> - 2014-06-06 04:50 -0700
Re: About scimark2 ... aminer <aminer@toto.net> - 2014-06-06 04:57 -0700
Re: About scimark2 ... Melzzzzz <mel@zzzzz.invalid> - 2014-06-06 23:04 +0200
Re: About scimark2 ... aminer <aminer@toto.net> - 2014-06-06 05:22 -0700
Re: About scimark2 ... aminer <aminer@toto.net> - 2014-06-06 05:42 -0700
Re: About scimark2 ... Melzzzzz <mel@zzzzz.com> - 2014-06-07 00:56 +0200
Re: About scimark2 ... Kaz Kylheku <kaz@kylheku.com> - 2014-06-06 23:11 +0000
Re: About scimark2 ... Melzzzzz <mel@zzzzz.invalid> - 2014-06-07 01:58 +0200
Re: About scimark2 ... aminer <aminer@toto.net> - 2014-06-06 09:08 -0700
Re: About scimark2 ... Melzzzzz <mel@zzzzz.invalid> - 2014-06-07 04:44 +0200
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