FAQ
Operating Policies
A nightly backup of the data in /home
is made. Data stored in the /scratch file systems is not backed up and cannot be recovered if deleted by accident or lost due to a file system failure.
Please note that even in /home
, files contained within a directory called tmp
or temp
will excluded from the backup.
An incremental backup is performed every night and a full backup made every 6 weeks. If you need to recover lost data, please contact us at hpc@zedat.fu-berlin.de.
Related Links
When your FU account expires or you leave the group you specified in your account application, then your access to the HPC systems will be deactivated. All data on the HPC systems will be deleted after 4 weeks.
Please ensure that you move data that you still require to another system. Data which is no longer needed should be deleted.
Please send email only to hpc@zedat.fu-berlin.de
. Your message will reach all HPC support staff. If you write to an individual member of the team and that person is unavailable, you will not receive a prompt reply.
If you have observed a specific error with a job sent to the queuing system, please fill in this error report.
Telephone
If you would like to discuss any issue related to our service with us, please call one of the numbers given on the contacts page.
Personal Consultation
You may also visit us personally in order to receive advice about using our systems. However, you must make an appointment with us in advance. In general, office hours are as follows:
Mon | 09:00 - 17:00 |
Tue | 09:00 - 11:00 and 12:30 - 17:00 |
Wed | 09:00 - 17:00 |
Thu | 09:00 - 17:00 |
Fri | 09:00 - 17:00 |
Data Storage
Available disk space can be queried via the command df
:
$ df -h
Filesystem Size Used Avail Use% Mounted on
rootfs 19G 5.9G 12G 33% /
/dev/sda1 19G 5.9G 12G 33% /
udev 24G 216K 24G 1% /dev
tmpfs 24G 606M 24G 3% /dev/shm
/dev/sda6 192G 188M 182G 1% /local
/dev/sda3 1.9G 95M 1.7G 6% /tmp
/dev/sda2 1.9G 879M 947M 49% /var
none 24G 606M 24G 3% /dev/shm
master:/cm/shared 247G 125G 109G 54% /cm/shared
master:/home 17T 11T 5.8T 65% /home
fhgfs_nodev 164T 106T 58T 65% /scratch
Here the entries /home
and /scratch
are particularly important.
Publications
The following text may be used:
The authors would like to thank the HPC Service of ZEDAT, Freie Universität Berlin, for computing time.
Please also use the following DOI as a reference for the system Curta:
10.17169/refubium-26754
If the HPC Service has been helpful for you in producing a publication or thesis, please send us the relevant DOI and, if possible, an appropriate image to hpc@zedat.fu-berlin.de, so that we can include this in our list https://www.fu-berlin.de/sites/high-performance-computing/Forschungsergebnisse.