For more information on how to use a particular compiler, use the man command e.g. man f77 . To run this program, simply type a.out at the shell prompt. This method is not recommended. This will produce an executable named exe.name. To run, just type exe.name at the shell prompt.
Executable files are machine dependent .
If you compile and link your source code on the SGI machine, the executable that is created will only run on SGI machines. If you want to run your code on a different type of machine, move the source code and recompile to get an executable for that particular machine. If a program crashes on an SGI machine, look for a core file. If one was created, delete it. Most of the information covered above for the Fortran 77 compiler also applies for the Fortran 90 and 95 compilers.