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Re: Polyhedron benchmark on Opteron
- From: Steve Kargl <sgk at troutmask dot apl dot washington dot edu>
- To: Fran?ois-Xavier Coudert <fxcoudert at gmail dot com>
- Cc: Fortran List <fortran at gcc dot gnu dot org>, franke dot daniel at gmail dot com, burnus at net-b dot de
- Date: Fri, 29 Sep 2006 07:38:29 -0700
- Subject: Re: Polyhedron benchmark on Opteron
- References: <19c433eb0609290713x64f74089m45e5ea291343e1d7@mail.gmail.com>
On Fri, Sep 29, 2006 at 04:13:39PM +0200, Fran?ois-Xavier Coudert wrote:
>
> I wanted to report some results for the Polyhedron benchmark** on
> Opteron (hardware details at the bottom of this mail). I used gfortran
> mainline (4.2.0 on 2006-09-28) and Intel 9.1.037 for comparison.
> Options used are :
> * gfortran -march=k8 -ffast-math -funroll-loops -static -O3
> * ifort -O3 -xW -ipo -static -V
>
If -ipo means interprocedure optimization, then this
isn't something for someone new to gcc/gfortran to do.
What are the comparisons if -ipo is removed? Conversely,
do the ipa and lto branches contain a working gfortran?
--
Steve