You need an account to access the resources of SCCKN. You can use the GRID-Accounts of the Theoretical Physics or just apply for an SCCKN account per email. Login to SCC is possible using SSH (Non-graphical), X2Go (graphical) or via Jupyterhub (Webinterface). Acessing special computing services (Overleaf/Cocalc) may need special accounts.

The program X2Go opens a graphical sessions on the frontend server. Just download the corresponding client for your operating system. If you have trouble using X2Go, try to select XFCE instead of the KDE Desktop. You can also use sshfs to mount a remote directory with "sshfs <user>@remotehost:<remotedir> <localdir>" to access files easily. Unmount the sshfs directory with "fusermount -u <localdir>".

The Jupyterhub is running at https://scc2.uni-konstanz.de and allows access to a Jupyter environment, a terminal and other applications via a webinterface.

For special purposes we can also provide virtual machines of any operating system running on the cluster. Just contact us to discuss the details.

SSH login to the frontends (scc.uni-konstanz.de or scc2.uni-konstanz.de):

ssh [username@]scc.uni-konstanz.de

or

ssh [username@]scc2.uni-konstanz.de

or any terminal program supporting SSH (like Putty or WinSSH on Windows). Of course you can also use graphical applications by using SSH with X-Forwarding (ssh -X) if your system supports it. The fingerprints of scc and scc2 are

f3:1e:a1:ab:05:60:f9:d4:cb:39:71:4f:b4:fb:e7:7c|kGa1XuEzkz+RpZAVH+q4wiiXHhxRZa72ZMSunck4rJ8 (RSA)

e7:09:be:0e:57:f8:e8:b5:b5:15:9b:51:b0:77:0c:26|XQY0OjdTOs/82Udi3rlYnCkwqYxY4qzg3upNT9YKQXs (ECDSA) 

b4:d9:b5:9b:84:39:b2:8c:83:49:1d:81:72:59:56:47|0Dpz0Yx+FQmrH5R0ly2LP4XuSpbvZyBPhCEbGGrsoNw  (DSA)

Data can be copied from and to SCC by using rsync or scp (or any application supporting SCP/SFTP file transfer, like WinSCP on Windows). Also sshfs is supported. All data is also available on all workstations in the TheoPhys-GRID directly at /data/scc. Please contact us if you have questions or need help.

TIP: use screen, tmux or byobu for persistent SSH sessions.