Course software                     

 my home page

This page contains information on how to use the packages: maple, lp_solve, cplex and lrs.
All are installed on lab machines located on the 1st floor of McConnell Engineering:
 eg:  where i is replaced by a small integer.
See below for how to get an account. If you do not find the software,
try typing: %source /usr/socs/Cshrc

cplex     (path: /usr/local/pkgs/cplex/ )
Instructions for cplex can be found here.

maple        (path: /usr/local/pkgs/maple/bin/)
A maple session that shows how to solve systems of equations is here.
This can be useful to check your arithmetic for Assignment 1

lp_solve          (path: /usr/local/pkgs/lp_solve/)
This program can be used to solve linear or integer linear programs.
Usage: lp_solve < input_file
A small lp_solve session is shown here.
Some examples input and output files are here.
The man page is here.

The full package is available for download from the lp_solve  home page.

A nice help page with windows/DOS binary is available at:

lrs          (path: /usr/local/pkgs/lrslib-041/ )
This program computes all of the extreme points (and extreme rays if any) of the
feasible region of an LP. Home page is:

  How to get a computer account:The prerequisites are
        1) Must be taking a CS course
        2) Must have paid tuition

From any unix lab workstation (103N, 105N)
        1) Log-in username "newuser" password "newuser"
        2) Follow the steps
         - An account will be created.
        Alternative is to use any webbrowser and connect to

Machines are available in McConnell 103n, and have names   where k=1,2,3,....
To connect from home you will need to use ssh (telnet will not work)

High performance workstations available for this course are in MC110, and
have names: lab110-5...lab110-18

The SOCS Inside-Out Website is a dynamic student initiative which aims to
reduce frustration and raise the level of computing competency at McGill.
It can be found on the web at