Parameters which control the solution method used and constraints on the solution are defined in several namelists included in input files specified as part of the EFIT initiation.
Input Files
SNAP file: A file named EFIT_SNAP.DAT or its various extensions. EFIT should be run in snap(3), snap_ext (7) or input (5) mode.
K file: A self-contained input file produced as output by EFIT input mode (5) run. Contains input data required for EFIT file mode (2) run.
R file: Fixed boundary input file. EFIT should be run in file mode.
X file: Free boundary input file. EFIT should be run in file mode.
ESAVE.DAT: Initialization of current profile for fitting mode (previous slice stuff).