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
