32 or 64 bit OS

cf. http://www.mathworks.com/support/solutions/data/1-5EMVM2.html?product=ML&solution=1-5EMVM2

To determine whether or not you are running a 32 or 64 bit Operating System, follow the instructions below:


For Windows XP:
--------------------
1) Right Click on My Computer
2) Select Properties
3) Under General Tab, which should be the default, you will want to locate System:

If it says the following,
====================
Microsoft Windows XP
Professional
====================
then you are running a 32 bit Operating System.

However, if it says the following,
====================
Microsoft Windows XP
Professional x64 Edition
====================
then you are running a 64 bit Operating System.


For Windows Vista:
--------------------
1) Right Click on Computer
2) Select Properties
3) Under System Header:

If it says the following,
====================
System type: 32-bit Operating System
====================
then you are running a 32 bit Operating System.

However, if it says the following,
====================
System type: 64-bit Operating System
====================
then you are running a 64 bit Operating System.


For Linux:
-----------
You will want to run the following command in a Terminal Window:

uname -a

If you receive any of the 2 outputs below, where you see i686, i586, or i386, then you are running a 32 bit Linux Operating System:
====================
Linux install-linux 2.6.22-14-generic #1 SMP Sun Oct 14 23:05:12 GMT 2007 i686 GNU/Linux
or
Linux install-linux 2.6.22-14-generic #1 SMP Sun Oct 14 23:05:12 GMT 2007 i386 GNU/Linux
====================

However, if you receive the output below, where you see x86_64, then you are running a 64 bit Linux Operating System:
====================
Linux qe02rhel 2.6.9-1.667smp #1 SMP Tue Nov 2 15:09:11 EST 2004 x86_64 x86_64 x86_64 GNU/Linux
====================