System Requirements

NetLogo 1.3.1 User Manual   

NetLogo is designed to run on almost any type of computer, but you may experience problems with older, less powerful systems or older versions of system software. The exact requirements are summarized below. If you have any trouble with NetLogo not working on your system, we would like to offer assistance. Please write bugs@ccl.northwestern.edu.

System Requirements: Application

On any type of computer, a Java Virtual Machine that supports Java version 1.1 or later is required. (Note that on the Windows platform, Microsoft’s Java Virtual Machine is not supported.) On the Windows and Macintosh platforms, you can choose to include the Java Virtual Machine with the download.

On all systems, approximately 15MB of free hard drive space is required.

Windows

Note: Microsoft’s Java Virtual Machine (jview.exe) is not supported.

Macintosh: OS X

On OS X, a Java Virtual Machine is included as part of the operating system. You do not need to obtain one separately. If you are running OS X 10.1, make sure you have installed “Java 1.3.1 Update 1”, available through Software Update.

If you install NetLogo on OS X, both a native and a Classic application will be installed. The native application is still in beta. It is beta because running natively is mostly reliable, but there are some bugs. (See “Known Issues” for a list of problems you may encounter with the native application.) So for the time being, if you need maximum reliability you may wish to run under Classic instead.

Macintosh: OS 8.x or 9.x

You’ll need Apple’s Macintosh Runtime for Java: MRJ 2.2.5 or higher (2.2.3 and 2.2.4 will probably also work). You can request that this VM be included at the time you download NetLogo.

Other platforms

NetLogo should work on any platform on which a Java Virtual Machine, version 1.1 or later, is available. If you have trouble, please contact us (see above).

System Requirements: Saved Applets

Saved applets should work on any web browser and platform on which a Java Virtual Machine, version 1.1 or later, is available. If you have trouble, please contact us (see above).

Exception: Apple’s new Java 1.4.1 virtual machine on Mac OS X does not run saved applets well. Some OS X web browsers, for example Internet Explorer 5.2.2, still use the old Java 1.3.1 virtual machine, which works better. Other browsers, for example Safari, are already using the new VM. We do plan to make saved applets function better in the new VM; in the meantime, you may wish to view saved applets in a browser which still uses the old VM. (To see which VM a saved applet is running under, hold down the Control key and click the mouse in the white background of the applet.)