# Urblauna ### Kesako? Urblauna (Romanche), or Lagopède Alpin in French, is a bird known for its changing plumage which functions as a very effective camouflage. More information is available at [https://www.vogelwarte.ch/fr/oiseaux/les-oiseaux-de-suisse/lagopede-alpin](https://www.vogelwarte.ch/fr/oiseaux/les-oiseaux-de-suisse/lagopede-alpin) It's also the name of our new sensitive data compute cluster which will replace the Jura cluster. Information on how to connect to Urblauna can be [found here](https://wiki.unil.ch/ci/books/high-performance-computing-hpc/page/urblauna-access-and-data-transfer). Information on the Jura to Urblauna migration can be [found here](https://wiki.unil.ch/ci/books/high-performance-computing-hpc/page/jura-to-urblauna-migration) The differences between Jura and Urblauna are [described here](https://wiki.unil.ch/ci/books/high-performance-computing-hpc/page/urblauna-migration) ### Hardware #### Compute The cluster is composed of 18 compute nodes of which two have GPUs. All have the same 24 core processor.
Number of nodesMemoryCPUGPU
161024 GB2 x AMD Epyc3 7443-
21024 GB2 x AMD Epyc3 74432 x NVIDIA A100
The GPUs are partitioned to create 4 GPUs on each machine with 20GB of memory per GPU #### Storage The storage is based on IBM Spectrum Scale / Lenovo DSS and provides 1PB of space in the /data filesystem. Whilst reliable this space is not backed up and all important data should also be stored on /archive The Curnagl /work filesystem is visible in read-only mode on Urblauna and can be used to install software on an internet connected system before using it on Urblauna.
**Filesystem mount point** **Description**
/usersUrblauna home directory
/scratchUrblauna scratch space (automatic cleanup)
/dataUrblauna data space (no backup)
/archiveSecure data space with backup (login node access only)
/workCurnagl data space (read only)
/jura_homeJura home directories (read only, login node only)
/jura_dataJura data space (read only, login node only)
### Software For information on the DCSR software stack see the following link: [https://wiki.unil.ch/ci/books/high-performance-computing-hpc/page/dcsr-software-stack](https://wiki.unil.ch/ci/books/high-performance-computing-hpc/page/dcsr-software-stack) ### Slurm partitions On Urblauna there are two partitions - "urblauna" and "interactive" ``` $ sinfo PARTITION AVAIL TIMELIMIT NODES STATE NODELIST urblauna* up 3-00:00:00 17 idle sna[002-016],snagpu[001-002] interactive up 8:00:00 4 idle sna[015-016],snagpu[001-002] ``` There is no separate GPU partition so to use a GPU simply request \#SBATCH --gres=gpu:1 To launch an interactive session you can use `Sinteractive` as on Curnagl