Nebula - Getting Started Guide

General information about the Nebula cluster, including hardware specifications is availabe on the Nebula system page.

Getting a login account

See the MET Access page more information.

How to log in

See the general instructions on getting started for information on how to login for the first time and set your permanent password.

• The Nebula login node is nebula.nsc.liu.se.

The SSH key fingerprints for the login node are:

SHA256:HqWb5r3mCuysWbF5l0WJOOrqlfn8eEgui/NBTmL7d5E nebula.nsc.liu.se (ECDSA)
SHA256:2sxBy0qtGZgJodlf17KpN3coWDvYxwUBY24HeioPd7Y nebula.nsc.liu.se (ED25519)
SHA256:ZfBdfb28c7dq70oJanhnQWyYUn40IZabvcIfHvj27nU nebula.nsc.liu.se (RSA)

About NSC’s cluster environment

Information about accessing the cluster and running jobs:

• Security
• Copying data
• Running applications
• Running graphical applications
• Batch jobs and scheduling (including Nebula specific information)
• Memory management

Storage for MET

Please note that data from Elvis in /home and /nobackup/forsk will not be copied automatically to the new storage system connected to Elvis. You can either copy data from Elvis to Nebula yourself using e.g. scp, or contact NSC for help with transferring large amounts of data between the clusters.

• File systems

Available software and development tools

The software environment has been updated with respect to Elvis, to be more like NSC’s Tetralith and Sigma clusters for Swedish academic users. The cluster now runs CentOS 7 Linux, and the module system is slightly different: it is now based on Lmod, which has multiple hierarchies. NSC has also started installing software semi-automatically using the EasyBuild system (these modules are called [modulename]-eb). NSC strives to keep the software environment and the available software installations as identical as possible on all clusters.

• Compilers
• MPI libraries
• Math libraries
• All software pages