You are here: Home Help/User Support Remote Access to Linux/Unix Systems Windows (with Exceed)

Windows (with Exceed)

Setting up your Mac OS X system for displaying Unix and Linux programs from CAE systems to your PC. This allows you to run Unix and Linux applications (such as ANSYS) that are not installed on the PC, or to take advantage of the remote system's extra compute power without overloading your PC.

The combination of the X Window System and a secure shell (SSH) program means that you can run an application on one of the CAE network's Unix or Linux workstations from other PCs around campus. Exceed is a commonly-installed X Window System program for Windows PCs, and should be available on any PC that has Fluent installed (systems in CH208, CH405, CH406, CH409, etc.). If you're on a CAE-managed system, you should have an Exceed 9.0 folder on the desktop, that if opened, should look like the following figure.

Exceed Shortcut

Once you've verified that Exceed is installed, click its icon in the Start menu, or double-click its shortcut on your desktop. After Exceed has started, you should see a toolbar on your screen as shown below.

Exceed Toolbar

You can click the X button in the top-right of the Exceed toolbar; this won't actually exit Exceed, but will just minimize its toolbar window. Now find the Putty (or Putty-x86) icon on your desktop. If Putty is not installed, download it from its homepage, then return to this page.

Double-click the Putty icon. Its main dialog box will appear, and should look similar to the following:

PuTTY Session Selected

CAE-managed Windows systems will already have several saved Putty sessions available, allowing easy logins to our various Unix and Linux systems. You can click on one of the saved sessions and click the Load button to select one. Systems outside the CAE Network will require you to enter the full hostname (such as ch208a.cae.tntech.edu) of the Unix or Linux system you want to connect to in the Host Name box (click here for a list of those systems).


PuTTY X11 Forwarding Enabled

After selecting a host to log into, click on the X11 category in the left side of the Putty dialog. Click the checkbox labeled Enable X11 forwarding. Failure to click this checkbox will prevent graphical applications from displaying on the local PC. Now click the Open button to start your login session.

The first time you try to connect to one of the CAE systems, you may be prompted about an unrecgonized RSA key. This prompt should only happen once per CAE system, and if it happens more than once, one of the following things has happened:

  1. You've completely reinstalled your PC, causing it to lose its record of the remote system's host key.
  2. You're working from a non-CAE Windows system that wipes out profile information after each logout, or on reboot. Examples of these systems would be systems in ITS PC Labs, laboratory systems with Deepfreeze, etc.
  3. The remote system has been reinstalled. To check on this possibility, contact Joel Seber (CH301, x3734) or Mike Renfro (CH314, x3601). The likelihood of a complete system reinstall on a CAE system is pretty low, however.

If you've verified that none of the above possibilities has happened, STOP NOW and contact Mike Renfro or Joel Seber. There is a chance that a router or other system between your PC and the CAE lab has been broken into, and opens up the possibility that your password or other information could be intercepted.

When the login as: prompt appears, enter your CAE username and press the Enter key. When the Password: prompt appears, enter your CAE password and press the Enter key. If you enter your username and password correctly, you'll be presented with the remote system's $ prompt in your account:

PuTTY Logged In

Once you see the remote system's $ prompt, you can run most graphical applications by typing their command. For example, ANSYS 10.0 is run by typing launcher100 and pressing the Enter key:
ANSYS Running