The NEOS Server offers COPT
Cardinal Optimizer for the solution of linear programming (LP) and
mixed-integer linear programming (MILP). Acceptable input formats for COPT on
the NEOS server include AMPL, GAMS, LP, MPS, and NL formats.
Details on COPT can be found on the COPT website.
The NEOS Server will automatically handle an NL model in either
binary or text format. NL files in either format can additionally be zipped,
gzipped, or tarred prior to submission if desired.
An options file can optionally be specified. Note: certain options
may be restricted, altered, or removed by the NEOS server prior to
solving. For example, users are limited to a max of four solver threads --
requests for more threads in the options file will not be honored.