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AMPL /NPSOLThe AMPL /NPSOL toolbox efficiently integrates the well-known solvers developed by the Stanford Systems Optimization Laboratory (SOL) with AMPL.
The toolbox includes:
- The dense general constrained nonlinear solver NPSOL®,
- The dense constrained linear least squares solver LSSOL and
- The dense constrained nonlinear least squares solver NLSSOL, based on NPSOL®.
- Read more about the above mentioned SOL solvers, as well as the AMPL /MINOS solvers MINOS and QPOPT, at the SBSI-SOL Home page.
- AMPL /NPSOL includes all DOS code and solvers that are part of AMPL /MINOS, see the description of AMPL /MINOS.
Main features
The codes are implemented to efficiently handle sparse arrays.
All solver parameters and features are selectable.
It is possible to use warm starts for the SOL solvers, and further speed up sequences of optimization solutions.
NPSOL® has been used intensively in control applications because of its speed and robustness.
LSSOL, NPSOL® and NLSSOL all may be used as sub problem solvers for other AMPL solvers.
The SPECS file input format is also possible to use.
NPSOL® and NLSSOL may estimate derivatives internally, faster than using the AMPL method.
NPSOL® is a registered Trademark of Stanford University
Requirements
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