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From: "william dot crocker at analog dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/13712] New: Executable runs 25% slower than when compiled with INTEL compiler
Date: Fri, 16 Jan 2004 21:11:00 -0000	[thread overview]
Message-ID: <20040116211131.13712.william.crocker@analog.com> (raw)

Keep up the good work BUT
When I compile my (very large number crunching) program
with the INTEL C++ compiler (icc,v7.0) it runs 20 to 30% faster.
On INTEL I use a single compilation pass with no "special" options, just -O3.
With GCC(3.3.2) I tried all sorts of options, but could not get any closer.
I would really like to continue using GCC,
but 25% is hard to pass up.
I used no special options when GCC was built and installed.

Bill

-- 
           Summary: Executable runs 25% slower than when compiled with INTEL
                    compiler
           Product: gcc
           Version: 3.3.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: william dot crocker at analog dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: ???
  GCC host triplet: DELL, Pentium4, Linux RedHat 7.3
GCC target triplet: ???


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13712


             reply	other threads:[~2004-01-16 21:11 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-01-16 21:11 william dot crocker at analog dot com [this message]
2004-01-16 22:54 ` [Bug c++/13712] " pinskia at gcc dot gnu dot org
2004-01-22 19:42 ` william dot crocker at analog dot com
2004-01-22 19:45 ` [Bug optimization/13712] " pinskia at gcc dot gnu dot org
2004-01-22 19:48 ` bangerth at dealii dot org
2004-01-29 13:10 ` william dot crocker at analog dot com
2004-01-29 13:16 ` falk dot hueffner at student dot uni-tuebingen dot de
2004-01-29 13:29 ` william dot crocker at analog dot com
2004-01-29 16:01 ` falk at debian dot org
2004-01-29 16:27 ` william dot crocker at analog dot com
2004-01-29 16:48 ` falk at debian dot org
2004-02-03 21:34 ` william dot crocker at analog dot com
2004-02-16 14:55 ` uros at kss-loka dot si
2005-01-23 18:39 ` [Bug rtl-optimization/13712] " steven at gcc dot gnu dot org
2005-01-24 11:16 ` uros at kss-loka dot si
2005-04-24 14:18 ` steven at gcc dot gnu dot org
2005-05-07 15:27 ` steven at gcc dot gnu dot org

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