Files did well with Unix , don't run with Linux !

anil79@fnal.gov · 08-01-2007, 06:09 PM

I am trying to run certain fortran files on the Linux platform which did well in the UNIX enviornment. The job crashes a long time after the submission with following error message

"segmentation fault" ....

Can anyone suggest a way out ?

n.nobbe · 08-01-2007, 06:19 PM

That's a lot to ask of your Fortran programs when you move them to a different platform and OS, even from Linux to Linux. YMMV.

Re-compile your Fortran source (surely you have the original code!

and if it compiles without error, run again.

HTH,
Nick

ta0kira · 08-01-2007, 08:23 PM

Unix and Linux don't have identical system call layouts, so although it may be an ELF file, the binary probably tries to use system call enumerations which don't do the same things on Linux as they do on Unix. You should always recompile when switching machines, even with the same version of the same OS. That's why open-source uses makefiles, and why you don't see a lot of consumer-land proprietary software for Unixes.
ta0kira

anil79@fnal.gov · 08-02-2007, 10:46 AM

Yes! The recompilation was completed sucessfully. I am still running the executable formed. Hope it does well.