Some medium-sized MINLP Problems

This is a sample of benchmarks as they can be done by everyone with the help of the new GAMS Performance Tools.

The following solvers were used:
DICOPT (with CONOPT2/CPLEX as NLP/MIP solvers, part of GAMS)
MINLP (with filterSQP as NLP solver, run with GAMS-AMPL)
SBB (with CONOPT2 as NLP solver, part of GAMS)
Only a small selection of problems was chosen. This is not meant to be a comprehensive comparison of the solvers used.

Hans D. Mittelmann, Arizona State University
Armin Pruessner, GAMS Development Corporation

November 2002

Performance Results

Results created using the PAVER Server:   http://www.gamsworld.org/performance/paver

Date / Time: 10/09/02 16:28:26


This page is a summary of the performance tests, using the solver square, resource time, and performance profile utilities. The Performance Tools are described in detail in the Performance World webpage at http://www.gamsworld.org/performance.

Trace files used:

Tracefile 1: minlplib1_diccon2cplex.trc
Tracefile 2: minlplib1_minlp.trc
Tracefile 3: minlplib1_sbbcon2.trc



For a list of model and solve status codes see the Status Codes Section.


Performance profile summary:

The profile utility compares solver outcomes of any number of given solvers (up to 8) over a model test set. The tool is described in detail at http://www.gamsworld.org/performance/pprofile.htm.


All performance profile plots (compares objective values):

Performance profile (ignoring objective values):

Solver square summary:

The solver square utility compares solver outcomes of two given solvers over a model test set. The tool is described in detail at http://www.gamsworld.org/performance/square.htm.


minlplib1_diccon2cplex.trc minlplib1_minlp.trc minlplib1_sbbcon2.trc
minlplib1_diccon2cplex.trc -- results results
minlplib1_minlp.trc -- -- results
minlplib1_sbbcon2.trc -- -- --


Resource time summary:

The resource time utility compares solver resource times of two given solvers over a model test set. The tool is described in detail at http://www.gamsworld.org/performance/restime.htm.


minlplib1_diccon2cplex.trc minlplib1_minlp.trc minlplib1_sbbcon2.trc
minlplib1_diccon2cplex.trc -- resultsA | resultsB resultsA | resultsB
minlplib1_minlp.trc -- -- resultsA | resultsB
minlplib1_sbbcon2.trc -- -- --