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[Bug fortran/30388] gfortran42 is slower than g77 3.4 about 10%
- From: "jvdelisle at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 6 Jan 2007 04:44:08 -0000
- Subject: [Bug fortran/30388] gfortran42 is slower than g77 3.4 about 10%
- References: <bug-30388-11045@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #6 from jvdelisle at gcc dot gnu dot org 2007-01-06 04:44 -------
With my system: x86-64 Linux
Using -O3 -ffast-math in both cases:
g77: MFLOPS: 893.198364
gfortran: MFLOPS: 895.7278
Using -O3 -ffast-math in both cases:
g77: MFLOPS: 930.39801
gfortran: MFLOPS: 891.1194
Using -O1 -ffast-math in both cases:
g77: MFLOPS: 962.237854
gfortran: MFLOPS: 890.9428
Using -O1 -ffast-math in both cases:
g77: MFLOPS: 259.945648
gfortran: MFLOPS: 199.7145
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30388