Re: differences of gfortran on amd64 and i386

[Davide Mancusi <arekfu@gmail.com>]

> Hello list,
> 
> I have a rather funny and annoying problem with a third-party fortran
> program. It is a non-free scientific program for some physical
> calculations. I get different output values, if I compile and run the
> same fortran code on amd64 or i386.
> 
> In fact, depending on the input file it exits with some error message
> in i386, when the same file runs fine on amd64. This is even true of
> the 'test' file provided with the program. Therefore it seems there is
> something wrong with my configuration or the compiler on i386.
> 
> I can run the binary compiled on i386 on amd64, but the binary
> compiled on amd64 is different and yields different results. The
> i386-binary runs without errors on amd64, however, when it exits on
> error on i386.
> 
> I have no idea, where to start looking for what is wrong here.
> 
> I run lenny on both systems.
> 
> I get the same behaviour for -i868 and -amd64 kernels on i386.

	Try compiling with -ffloat-store on i386. Also, is it a pure
FORTRAN program or do you have some parts written in other languages?
And finally, are you linking to some external library (like CERNLIB)?

Davide

-- 
Time flies like an arrow.  Fruit flies like a banana.
--
If anything can go wrong it wSegmentation fault
core dumped