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FAQ - Frequently Asked Questions

We try to collect the most frequently asked questions. Your problem may be listed below. If not so, please don't hesitate to contact us.

  • How to be granted access to the High Performance Computer?
  • Please read here.
  • How to use programs that require OpenGL?
  • Support of OpenGL depends as well from the login procedure as from the applications. You find a matrix of possible combinations here.
  • How to change my password?
  • Please visit the formular at https://passwort.uni-kl.de.
  • How to change my login shell?
  • Your login shell may be changed after login to our Serviceportal (Active Directory Attribute).
  • Which software is installed? How to install new software?
  • We organize installed software in different versions through modules. The list of installed modules is quite extensive. Please contact us if software is missing.
  • Why my jobs won't start?
  • Every job competes with all other jobs of all other users for resources. The batch system uses therefore job priorities. Depending on your requirements you may have to wait several days -> Guideline for specifying requirements.
  • Which hardware is available on the cluster? How to use compute nodes exclusively?
  • See the site resources for a list of available hardware. Members of the TU Kaiserslautern may buy and add own hardware to the cluster. These nodes benefit from the central installation, maintenaince and data backups and may be used by its owners only. Please contact us for further information.
  • How to access data in the RHRK Home directory?
  • The command rhrk-home denotes the path to your files and the command cd $(rhrk-home) changes into this directory. Please be aware that this command and this path is only valid on the head nodes. The compute nodes are not able to access RHRK Home. To share files, you have to copy them into the HOME of the cluster (Variable $HOME). The unix command rsync may be used to sync files between different locations.
  • How to transfer data?
  • See this manual.