First, run prepare.sh and edit all the input parameters accordingly. This will run the code module_cal.f90 and generate output files 'gpu_module.dat' and 'cpu_module.dat'. Update the modules 'device_mod' and 'cpu_mod' in the main simulation code 'diff_activity.cuf' as per the files 'gpu_module.dat' and 'cpu_module.dat', respectively. Finally, edit and run 'execute.sh'. 
