The default value for this is 1, that means that the chance data is written for every iteration. Starting Gadget with the -opt switch will give Gadget an optimisation enter file, from which the information about the optimisation routines shall be read. This will specify the kind of optimisation to perform, and in addition parameters for that optimisation routine . Starting Gadget with the -i change will give Gadget an inputfile file from which the preliminary values and bounds of any variables could be read . Starting Gadget with the -n swap will begin a community run, used in conjunction …