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From: "talebi.hossein at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libfortran/52537] New: slow trim function
Date: Fri, 09 Mar 2012 08:48:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52537

             Bug #: 52537
           Summary: slow trim function
    Classification: Unclassified
           Product: gcc
           Version: 4.6.1
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: libfortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: talebi.hossein@gmail.com


Hello,

The trim function in Gfortran seems to be a a lot slower than the intel
compiler. Sometimes I have to read some input text files which can very
large(1.5GB); Comparing the intel and gfortran, the gfortran takes 150 seconds
where intel spends only 50 seconds. I checked, and there seems to a large time
spend on the trim function. 

I am not sure if intel does some other optimization but I never got such huge
performance difference between gfortran and ifort.

Thank you.