CONTENTS src/amplsolver Should be created and contain the AMPL stub file reader headers and source files, as obtained from NETLIB After compilation, the sys.x86_64.Linux subdirectory needs a symlink named libamplsolver.a referring to amplsolver.a. src/funcadd source for dynamic link library amplfunc.dll providing dummy functions diff(), eval(), and integral() from TACO. These are dysfunctional and are provided only to satisfy AMPL. Solvers at the backend of TACO (such as muscodsolver) shall implement and register their own counterparts of these functions. src/frontend source for the TACO front end. Reads an AMPL stub .nl file and detects the optimal control problem structure. This is supposed to be MUSCOD-II agnostic, but hasn't been reported to be useful with any other approach to solving optimal control problems. src/muscodsolver source for the MUSCOD-II TACO backend. Uses the frontend to automatically set up a MUSCOD-II model and DAT file. The model will use interpreted function evaluations provided by amplsolver. Optionally, a C model file can be generated, but won't be used. For the knowing ones, the following MUSCOD-II features are not supported: - continuous least-squares objectives (node least-squares is auto-detected and works) - user-side multi-stage problems (auto-generated MINTOC multi-stage problems work) - implicitly discontinuous ODEs/DAEs - s_spec=0 initializations other than constant over time (s_spec=1,2 works) REQUIREMENTS A copy of the source tree of the MUSCOD-II optimal control problem solver is required to build the MUSCOD-II solver backend. As MUSCOD-II is not in the public domain, its source code cannot be provided along with this MPC submission. We instead provide a compiled AMPL+TACO interface to MUSCOD-II on the NEOS server. It is currently accessible (temporarily in the MILP category) at http://neos-dev1.discovery.wisc.edu/neos/solvers/milp:MUSCOD-II/AMPL.html It is scheduled to move to the NEOS production server (where it can then be found in the new MIOCP category) at http://www.neos-server.org/neos/solvers/index.html in due time. examples A collection of OCPs, MIOCPs, parameter estimation problems, and boundary value problems converted from the COPS library and the MUSCOD-II test sets. All models can be solved by submitting the appropriate combination of .mod and .run file (and possible .dat file) to MUSCOD-II on the NEOS server.
AMPL/TACO Extension for MUSCOD-II
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