All users need two factor authorization (2FA) to access VT ARC systems.

Details about setting up and using 2FA are in:

https://secure.hosting.vt.edu/www.arc.vt.edu/2fa/

If you are using the DUO app on a cell phone for your 2FA, then you
can click on the key next to "VT", and a code will pop up. Then, when
you log into any 2FA system, you can follow your password by a comma and
then the code:

      password,code
    

This alternative is useful for situations where cell phone service is
an issue, or for dealing with systems with a fast timeout, such as ETX.

Any user interested in the TensorFlow machine learning system can
find instructions for installing and using the package at

https://secure.hosting.vt.edu/www.arc.vt.edu/userguide/tensorflow/