FAQ

Access and Account Issues

I Cannot Log In to my Cluster and See 'Status: LOST_ACCESS' in the Registry Info

Answer:

Requirements

You need to fulfill the requirements outlined in

• BwUniCluster: Registration/bwUniCluster
• BwForCluster: Registration/bwForCluster

In short, you need

• the "entitlement" (permission from your home university to use HPC resources)
• valid registration in the zas (bwForCluster)
• filled survey questionnaire (bwUniCluster)

Please check which of those two things are missing using the following documentation

Entitlement

• BwUniCluster: you need the Registration/bwUniCluster/Entitlement
• BwForCluster: you need the Registration/bwForCluster/Entitlement

See the two links above to learn how to check if you have the entitlement.

If the entitlement is missing: please check with the local support of your home university (the university where you study or are employed)

Questionnaire (bwUniCluster only)

→ Check if you answered the Questionnaire.

ZAS Permission (bwForCluster only)

→ BwForCluster: Check if you are an active member of a compute activity and the "RV" hasn't expired.

Storage and File Systems

I am over the File System Quota

There are two resources with limits enforced by quota:

• disk space
• number of inodes (files).

It is important to identify the main sources that consume these resources.

• Size: List all directories (and files) in your home directory or workspace sorted by size

du -hs .[!.]* * | sort -h | tail

Descend in a directory with a large reported size and repeat until you find large files that are worth taking care of.

.[!.]* makes sure the "hidden" dot files are also checked.

• Inodes:

du -s --inodes .[!.]* * | sort -n

This will only count inodes in subdirectories. Also make sure your top-level (e.g. $HOME) directory aren't full with hundred thousands of files:

ls -1a | wc -l