PENNON

The NEOS Server offers PENNON for the solution of nonlinearly constrained optimization problems in AMPL format. PENNON is particularly suitable for large-scale problems with sparse data.

PENNON implements a generalized augmented Lagrangian method. Additional information on PENNON (including information on how to obtain PENNON) can be found in the PENNON_AMPL User's Guide and at the PENNON website.

PENNON was developed by Michal Kocvara and Michael Stingl.

Using the NEOS Server for PENNON

The user must submit a model in AMPL format to solve a nonlinearly constrained optimization problem. Examples of models in AMPL format can be found in the netlib collection.

The model is specified by a model file, and optionally, a data file and a commands file. Do not include the solve command in the model or data file. If a command file is specified it must contain the AMPL solve command; otherwise the solve command is invoked automatically by the Server.

The commands file can contain any AMPL command or set options for PENNON, for example,

option pennon_options "maxit=50";

See the PENNON options table for a list of options.

Printing directed to standard out is returned to the user with the output. Enter the location of the ampl model (local file)
Model File:

Enter the location of the ampl data file (local file)
Data File:

Enter the location of the ampl commands file (local file)
Commands File:

Comments:

Put in priority queue

e-mail address:

Please do not click the 'Submit to NEOS' button more than once.

_{DOE disclaimer

DOE Web privacy policy}