Options can be set using ipopt.opt, through your own code, or through the AMPL ipopt_options command. See Section 5 for an explanation of how to use these commands. Shown here is a list of the most important options for IPOPT. To view the full list of options, you can set the option print_options_documentation to yes or simply run the IPOPT AMPL solver executable as
Usually, option values are identical for the regular mode of IPOPT and the restoration phase. However, to set an option value specifically for the restoration phase, the prefix ``resto.'' should be appended. For example, to set the acceptable tolerance for the restoration phase, use the keyword ``resto.acceptable_tol''.
The most common options are: