GMC# Users Guide

Global Minimizer for C# (GMC#) Version 1.0b
Users Guide

INTRODUCTION

RUNNING GMC#

USERS GUIDE

METHOD SELECTION

TASK SELECTION

OPERATIONS

ANALYSIS WINDOWS

REFERENCES

The GMC# system is class framework for implementing, testing and viewing custom made or already installed minimization tasks and methods. The application is flexible and can be extended in many ways. This application helps to understand and visualize optimization problems, both mathematical and software related.

Running GMC#

The GMC# system can be run only as C# Application and only under Win98/Win2000/NT/XP OS. C# is one of the newest Microsoft products and it is only in beta stage, but is stable enough. Run GMCS.exe file and you will see this screen:

Note: You need to have installed Microsoft .NET framework. For more information go to http://msdn.microsoft.com/net/

GMC# have methods, tasks and analyzers. The task is the work to be done and method is way of doing that. The analyzers represents results in a visual way.

Users Guide

Method selection

The choice control at the top of the window shows the list of supported methods. One of them is to be selected. After selecting a method the window changes. The configuration window depends on the actual method selected, but usually it will have an "Iterations" field, where the number of iterations, can be changed. If the entered value is invalid, or the number is out of bounds, the appropriate error message is displayed.

Task selection

The choice control at the top of the window shows the list of available tasks. One of them should be selected and configured before optimization starts. After selecting a task the window changes. The configuration window depends on the actual task selected. It lists the properties of the task and then the range of the minimization domain.

Tasks have some properties incuding dimensions that are configured.

Operations

Operations window:

You can choose operations:

Run. Starts selected task calculation by using selected method. GMC# shows current function value (0.9884 in this screen) and current iteration number (224 in this screen).
Pause. When RUN button is pressed, calculation starts. By pressing PAUSE, the user can pause calculation for unlimited time.
Stop. STOP button stops calculations and destroys gathered results.
Analysis. When calculation is complete, the user can view results. For more information see section: Analysis windows.

Analysis windows

After optimization one can view results.

The projection windows show the relation between one of the dimensions of the domain of the minimization function and the value of the function.

The convergence window shows the progress of minimization on iteration basis.

Reference

Arunas Andriulaitis ([email protected])

Jonas Mockus ([email protected]).

Valdas Varnagiris ([email protected])