please refer to my thread,
gfortran gives different output after installation openSUSE 11.3
Please help me to solve the problem, it is indeed important for me.
if the output is different, your problem is a coding problem. what was the fortan code and input?
otherwise use a switch like -ansi or -posix which may guarantee the size of floats/doubles.
I’m not sure why you are posting this again when you already posted it in the Applications forum.
The responses Martin_helm gave are quit accurate.
Bottom line: Different versions of gcc and gcc-fortran can produce different results. And as Martin said, precision can be affected by this, as well as architecture and the libs you link against.
Without more information it is impossible to help.
If the code is simple, post it on pastbin, etc.
Also provide the exact versions of gcc and gcc-fortran you are using, the libs and how you are compiling.
Without all the information no one will be able to help you.
Cheers,
Lews Therin