in reply to Re: Parallelization of heterogenous (runs itself Fortran executables) code
in thread Parallelization of heterogenous (runs itself Fortran executables) code

GNU xargs has also an option (-P) to run several processes in parallel. Something like...
find /starting/dir -type f -print0 | xargs -P 4 -0 /.../perlscriptcall +ingfortran.pl
... should work for the OP.