SAS4A/SASSYS-1 generates and uses a number of binary files containing a wealth of information about the simulation. The number and types of files generated depends on user input.
- RESTART File (RESTART.dat) — output
- The RESTART file contains all of the data needed to continue a calculation from where it left off. RESTART files are saved at the end of steady-state initialization and after every NSTEP main time steps. If NSTEP is zero, no restart files are saved.
- RESTART File (RESTART.bin) — input
- An input RESTART file must be provided if a simulation is being restarted from a previously saved state. In this case, the saved RESTART file must be renamed from RESTART.dat to RESTART.bin and an appropriate restart input file must be provided on standard input.