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NEOS Interfaces to MINTO

WWW Form & Sample Submissions


The NEOS Server offers MINTO for the solution of mixed-integer linear programs posed in AMPL format. MINTO solves mixed-integer linear programs by a branch-and-bound algorithm with linear programming relaxations. It also provides automatic constraint classification, preprocessing, primal heuristics and constraint generation. This version of MINTO uses the LP solver Clp, from the Coin-OR project to solve the relaxations.

The original authors of MINTO are:

The current maintainer and developer of MINTO is

Using the NEOS Server for MINTO

The user must submit a model in AMPL format to solve a mixed-integer linear program. 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. If the command file is specified it must contain the AMPL solve command.

The commands file can contain any AMPL command or set options for MINTO. by modifying the variable 'mintoamp_options'. See the MINTO-AMPL options page to get a listing of the various options. A few more items of note specific to the MINTO-AMPL solver

  • The maximum CPU time for a job has been set to four hours
  • The test problems submit to NEOS can and will be harvested. Problems deemed "interesting" are made available to the public (as MPS files) at COR@L
  • The Osi and Clp COIN components used in the code are compiled from the COIN CVS tree on 8/3/05
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)
Additional Settings
Dry run: generate job XML instead of submitting it to NEOS
Short Priority: submit to higher priority queue with maximum CPU time of 5 minutes
E-Mail address:
Please do not click the 'Submit to NEOS' button more than once.