Requirements:

• A Linux PC with an AMD or Intel processor(s) (including x86-64). No Microsoft or Apple versions are planned. Further comments are below.
  
  
• You must be able to print or display PostScript files (or convert PostScript, e.g., to PDF with Adobe Acrobat Distiller).
  
  
• An X-windows display. (This is checked for you in Step 2 of the test run below.)
  
  
• A monitor with reasonable resolution (at least 1024 x 768).
  
  
• The installation is very simple, even for non-experts:
  
  
  • You log on under your normal username (not root);
    
    
  • And you can at any time completely remove your installed package (including all output from the tests) with the command:
    $HOME/.uninstall-lcmodel

Free installation and test run:

1. Download
   
   lcm-64.tar ( 11Mbyte) (for most 64-bit systems)
   or
   lcm-32.tar (7.4Mbyte) (for 32-bit and 64-bit systems)
   
   If you are unsure, download and install lcm-64.tar. If you quickly get an error message like "No such file or directory" or "Cannot execute binary file" or "Kernel too old" during installation, then uninstall with $HOME/.uninstall-lcmodel and then download and install lcm-32.tar.
   
   
2. Open a terminal and install and test the package with the two commands:

      tar xf lcm-??.tar
      ./install-lcmodel

   where ?? is 64 or 32. Note that the last command starts with a dot.
   
   (If you get an error message about not being able to open or connect to your display, then click here.)
   Chapter 4 of the User's Manual has more information on installation and displaying the results.
   
   
3. Your test-run results should be similar to PLOTs 1-4 in the documentation (and fairly similar to the 2007 result).

Documentation

Analyzing your data

   cd $HOME/.lcmodel
   ./lcmgui

Further comments on computers

• An LCModel analysis makes full use of one processor's speed and CPU cache memory. It makes no use of multiple processors (unless several analyses run simultaneously).
  
  
• There is very little input/output or demands on graphics, memory or disk storage.
  
  
• 512 MB of memory should be sufficient, at least for a single user.
  
  
• LCModel should run with almost any Linux distribution from 2001 or later. Most popular are Ubuntu, Red Hat & CentOS.
  
  
• You should check all of this on your own computer with the free download and test runs.