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NEOS Interfaces to FICO-Xpress

Sample Submissions
WWW Form - Email - XML-RPC

FICO-Xpress

The NEOS Server offers FICO Xpress for the solution of mixed-integer linear programming (MILP), linear programming (LP), and second-order conic programming (SOCP) problems. Problems can be submitted to FICO Xpress on the NEOS server in AMPL, GAMS, MOSEL, or MPS format.

The FICO Xpress optimizer is a commercial solver for linear programming and mixed integer linear programming. XPRESS is part of the FICO Xpress Optimization Suite. To learn more about the FICO Xpress Optimization Suite, visit the FICO Optimization website.


Using the NEOS Server for FICO-Xpress/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 xpress_options 'OPTIONS';
where OPTIONS is a list of one or more of the available solver options for AMPL.

Note: An email address is required for any submissions to FICO Xpress solvers. This email address will be forwarded to FICO and may be used by FICO for promotional purposes. When using the XML-RPC interface, you must add the following line into the XML file that is submitted to NEOS:

<email>your.address@email.edu</email>
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
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.