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Student Software Updates

AMPL: A Modeling Language
for Mathematical Programming

by Robert Fourer, David M. Gay, and Brian W. Kernighan

Duxbury Press / Brooks/Cole Publishing Company, 1993
351 + xvi pp., ISBN 0-534-37895-1, $89.95





There are several paths to getting an updated version of the AMPL Student Edition software. Choose from the following options according to your situation: To get an update for an AMPL Professional Edition -- one that does not have the strict problem-size limitations of the student software -- contact the vendor that originally sold you AMPL. (If you're having trouble locating your vendor, our vendor listing may help. If vendor information is not available or your original vendor cannot be located, write to info@ampl.com for assistance.)


Downloading Student Edition software updates

From the netlib AMPL directory, you can download the latest update of the AMPL Student Edition software that comes with the AMPL book. This update, in the form of an ".exe" file, is available for both the DOS and Windows AMPL versions.

Updating the Windows version. You can tell that you have the newer, Windows version of AMPL if your book came with a supplement titled AMPL: . . . With AMPL Plus Student Edition for Microsoft Windows and if the installation procedure created a file named amplplus.exe. To update, download the file,

This file must be decompressed by gzip before you can use it. The result is a file wampl.exe. If you copy it to the directory where you originally installed AMPL, it will replace the older executable of the same name that was installed from the book disk, and your update will be complete.

Updating the DOS version. You can tell that you have the older, DOS version of AMPL if your book came with a supplement titled AMPL: . . . Using the AMPL Student Edition under MS/DOS and if the installation procedure created a file named ampl.exe. In this case you may download either of the following:

  • ampl.exe.gz, produced using the Symantec C/C++ version 6 compiler.
  • watampl.exe.gz, produced using the Watcom C/C++32 version 10.0b compiler; and dos4gw.exe.gz, a "helper" required to run Watcom-compiled programs.
The Symantec update is installed in the same way as the Windows update described above. The procedure for the Watcom update is analogous, except that it creates an executable named watampl.exe and a helper named dos4gw.exe, which should both be copied to your AMPL directory.

The AMPL book was distributed with the Symantec-compiled version, but for some computer configurations you may get better performance from the Watcom-compiled alternative. See the AMPL Student Edition detailed version notes for additional information.

Please note. All of these updates incorporate the most recent new features of AMPL as well as recent bug fixes to the AMPL processor. They do not include updated solvers, however, and hence are intended primarily for updating complete versions of the AMPL Student Edition that have been previously installed from the book diskettes.

For information on availability of updates to the MINOS solver that comes with the book, contact ILOG Direct. Earlier versions of the book software used MINOS 5.4; the current version uses MINOS 5.5, which differs only in minor ways.

For updates to the CPLEX solver that comes with the book, contact the CPLEX Division of ILOG Inc. Earlier versions of the book software used CPLEX 2.0, 2.1 and 3.0; the current version uses CPLEX 4.0, which incorporates new algorithmic options that do not appear in some or all of the older versions.


Updating the CPLEX license

If you have the AMPL Plus Student Edition that came with the AMPL book, you will find that the accompanying CPLEX license expired at the end of 1998. To update the license so that it will work in 1999 and later, download the file updatstu.exe, and then double-click it to run the license updater. If you have any trouble running CPLEX under the AMPL Plus Student Edition after performing this update, contact ILOG Direct as indicated below.

No other downloads for CPLEX are currently available. For information on all versions of AMPL/CPLEX, contact ILOG Direct via info@cplex.com or +1 775-831-7744.


Requesting the Windows Student Edition

If you purchased an older version of the AMPL book containing the DOS software, you can request a new AMPL Plus Student Edition for Microsoft Windows as follows:
  • If you use AMPL in teaching, request a new examination copy of the book by submitting the Duxbury Press on-line review copy request form, or by contacting Curt Hinrichs, Duxbury Press, 511 Forest Lodge Road, Pacific Grove, CA 93950; phone 408-373-0728; curt.hinrichs@duxbury.com.

  • For commercial and other uses of AMPL, contact ILOG Direct, 889 Alder Avenue, Suite 200, Incline Village, NV 89451, USA; phone +1 775-831-7744; fax +1 775-831-7755; info@ilog.com.


Downloading Unix Student Editions

Also from the netlib AMPL directory, you can download the latest updates of the AMPL Student Edition software for a broad variety of Unix platforms:

Downloaded Unix versions of the AMPL Student Edition must be must be decompressed by gzip to produce a file named ampl. This file must be made executable, by a Unix command such as chmod +x ampl, after which it may be executed from any convenient directory.

To make use of these versions, you currently need to acquire solvers separately. See our download page for some possibilities.



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LAST MODIFIED 6 OCTOBER 1999 BY 4er.