NEOS Interfaces to Uno

Sample Submissions
WWW Form - XML-RPC

Uno

The NEOS Server offers Uno for the solution of nonlinearly constrained optimization problems. Problems can be submitted in AMPL or NL format.

Uno is an open-source C++ solver that provides a unifying framework for nonlinearly constrained optimization. It decouples the algorithmic strategies (constraint violation/optimality measures, globalization mechanisms) from the subproblem solvers, allowing different combinations to be instantiated. Uno handles smooth nonlinear programs with equality and inequality constraints.

Uno was developed by Charlie Vanaret. For more information, see the Uno GitHub repository.

Using the NEOS Server for Uno/AMPL


The user must submit a model in AMPL format. Examples are provided in the examples section of the AMPL website.

The problem must be specified in a model file. A data file and commands files may also be provided. If the commands file is specified, it must contain the AMPL solve command; however, it must not contain the model or data commands. The model and data files are renamed internally by NEOS.

The commands file may include option settings for the solver. To specify solver options, add 

  option uno_options 'OPTIONS';
where OPTIONS is a list of one or more of the available solver options for AMPL.

Web Submission Form
Model File
Enter the location of the AMPL model (local file)
Data File
Enter the location of the AMPL data file (local file)
Commands File
Enter the location of the AMPL commands file (local file)
Comments
Additional Settings


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