Installation without Root Access and non-graphical mode



I would like to install FDTD software in the supercomputing center, but they are non-graphics Linux system and can not connect to the Internet. Worse, I can not get administrator privileges on their system. The current situation is that I have only one floating license to think about. I would like to install it in a supercomputing center system, using multiple nodes to emulate a large file.
My current difficulty is:
How do i install Flexnet license manager and FDTD on Linux systems that are not graphics, do not have administrator privileges, and can not connect to the Internet.
My current question is:
If I do not install Flexnet license manager, just install FDTD. In the case of only one floating license, multiple nodes are used to simulate a large file at the supercomputing center.

Unable to deactivate license and activate on Linux via command line


Unfortunately, you cannot install Lumerical Flexnet license manager without Root or Admin access:

  • You will have to ask for your IT Department or System Administrator to install the license manager in the cluster.

  • For trial license that have been downloaded from the website - it will always require an internet connection. Please send an email to for more information on obtaining a license for your cluster.

  • To install only the software like FDTD Solutions on the cluster nodes without root access, we have the link:

  • The cluster and your local computer where the license manager is installed and activated should be connected on the same network. You will need to configure the cluster to be able to access the license manager from your local computer. This will require the assistance of your IT department or System Administrator to configure the cluster or your network security.

  • And to run simulations across several or multiple nodes on the cluster you will have to have the equivalent number of license for the FDTD engine, like running on 5 nodes on cluster will require 5 FDTD engine licenses.

  • We have the link on how to setup your cluster to run simulations.

  • We have the following link to run simulations using the command line interpreter for Linux: