Re: NLEQ1 and open source Fortran

g95 uses the GCC 4.01 backend. Is this ancient?

BTW, g95 has been compiling and running properly my real-life
engineering application for months. I have yet to get gfortran to even
compile it.

Al

Steve Kargl wrote:
> Madhusudan Singh wrote:
> > rlopneg wrote:
> >
> >
> >>Hello I've been having some troubles trying to solve al large scale
> >>nonlinear system using nleq1. When I compile it using Intel's Fortran
> >>Compiler everything works properly, but since I'm trying not to use
> >>comercial software I tried compiling my program using GNU's (gcc)
> >>GFortran. When doing this I get the solver stops due to singular matrix
> >>problems. I've checked that the SMALL and EPMACH values are the right
> >>ones for my machine, and I'm using the files downloaded right from
> >>http://www.zib.de/Numerik/numsoft/CodeLib/codes/nleq1/. And besides
> >>that, the solver works fine with Intel's fortran...
> >>
> >>Does any body know how to correct this, or why it works on comercial
> >>fortran compilers and not with open source compilers??
> >>
> >
> > Have you tried g95 ? It is known to be more complete than gfortran.
> >
>
> This has nothing to do with the completeness of gfortran versus
> g95. The OP clearly states that gfortran can compile the code.
> Indeed, g95's use of an ancient version of the gcc backend may
> indicate that gfortran is a better choice.
>
> BTW, if you use complex data types with g95, I suggest that you
> should carefully read the g95 source code. The last time I checked,
> there were a few bugs lurking.
>
> --
> steve

.

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