sv time_value executable_file or
sv time_value executable_file configuration_file
The loader will the run your program for the amount of time specified by time_value. Any watch commands that appear in the configuration file, if specified, will be ignored. The only output from the program will be what your program writes to the OUTPUT file. The only input will be from any waveforms specified in a configuration file and/or what your program reads from the INPUT file. The INPUT and OUTPUT files will be associated with the keyboard and screen.