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Re: Errors on your web page
- From: Mikael Morin <mikael dot morin at tele2 dot fr>
- To: Steve Kargl <sgk at troutmask dot apl dot washington dot edu>
- Cc: fortran at gcc dot gnu dot org, gcc at gcc dot gnu dot org
- Date: Wed, 26 Nov 2008 13:55:01 +0100
- Subject: Re: Errors on your web page
- References: <20081125065426.GA73502@troutmask.apl.washington.edu>
Steve Kargl wrote:
> Dear Absoft,
>
> Please fix the errors on your web page:
>
> http://www.absoft.com/Absoft_Windows_Compiler.htm
>
> The comparison chart is not only misleading, it is a down
> right lie! The last column is labeled "GNU g77 gfortran".
> g77 and gfortran are completely different compilers! gfortran
> is a Fortran 95, and in fact, gfortran probably supports more
> Fortran 2003 and draft Fortran 2008 features than Absoft's product.
> Your chart clearly states that gfortran is not a 'Native f95
> compiler". What does 'native' mean, here?
>
> The chart indicates that gfortran doesn't use SSE. Well,
> gfortran can use SSE if your processor has these features.
> You need to use the options -msse -msse2 -msse3 -mssse3
> -msse4.1 -msse4.2 and -msse4 to get sse or one the -march=
> options.
>
> What to you mean by "top 10% performance" in your chart?
> gfortran performs as well as or better than Absoft's product
> on many of the Polyhedron Benchmarks. Your PDF file under the
> Linux Benchmark is quite misleading. You are comparing gfortran
> 4.1.2 (released on 2/17/07) against your product. Try
> comparing to gfortran 4.3.2 (the current release) or
> the upcoming gfortran 4.4.0 release. You do not include
> gfortran in the Windows benchmarch, and the MacOS X
> comparison uses 4.3.0. Wow, that's consistent!
>
> Your chart states that gfortran doesn't support Mil Std 1753.
> In fact, gfortran has supported Mil Std 1753 for a very long
> time. Please fix your chart.
>
> What do you mean by "Mixed Platform Licenses"? gfortran can
> be run on more architectures and operating systems than Absoft's
> product and you only need to understanding the GPL (an Open
> Source License, ie., it's free).
>
> Note there is a win64 version of gfortran provided by www.equation.com.
> Again, your chart is misleading.
>
Do you really think they will change their webpage to one that
explicitly states that their compiler has a competitor with comparable
features, which is at least as fast, supports more platforms and is
available for free?
I would be very surprised if they do.
Mikael