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PSI HPC@CSCS - PSI's Share at CSCS Alps

PSI has a long standing collaboration with CSCS for offering high end HPC resources to PSI projects. PSI had co-invested in CSCS' initial Cray XT3 supercomputer Horizon in 2005 and we continue to procure a resources on the CSCS flagship systems.

The share is intended for projects that by their nature cannot profit from applying for regular CSCS user lab allocation schemes. in a competitive grant process.

We can also help PSI groups to procure additional resources based on the PSI conditions - please contact us in such a case.

Yearly survey for requesting a project on the PSI share

SURVEY FOR 2027 is now ACTIVE. Submission deadline is Nov 6th 2026

At the end of each year we prepare a survey process and notify all subscribed users of the specialized PSI HPC@CSCS mailing list (see below) and the merlin cluster lists, to enter their next year resource requests. Projects receive resources in the form of allocations over the four quarters of the following year.

The projects requests get reviewed and requests may get adapted to fit into the available capacity.

The survey is done through ServiceNow, please navigate to Home > Service Catalog > Research Computing > Apply for computing resources at CSCS and submit the form.

Applications will be reviewed and the final resource allocations, in case of oversubscription, will be arbitrated by a panel within CSD.

RESPONSIBLE USE OF RESOURCES

Once you receive an allocation you are responsible for using it. Allocations that are not used wthin a quarter are lost to PSI! If you find out that you cannot use resources allocated to you, you must notify us as fast as possible, (best before or early in a quarter) so that we can allocate them to another project.

Wasting resources will affect your ability to receive future allocations!

Instructions for filling out the survey for 2027 resources

  • We expect to have a budget of 100 kCHF that can be shared out to the projects. This translates to 435'000 multicore node hours or to 35'600 node hours on the GPU Grace Hopper nodes.
    • multicore projects: The minimum allocation is 10'000 node hours, an average project allocation amounts to 30'000 node hours
    • GPU projects: The minimum allocation is 800 node hours, an average project allocation is 2000 node hours.
  • You need to specify the total resource request for your project in node hours, and how you would like to split the resources over the 4 quarters. For the allocations per quarter year, please enter the number in percent (e.g. 10%, 30%, 30%, 30%). If you indicate nothing, a 25% per quarter will be assumed.
  • We currently have a total of 65 TB of storage for all projects. Additional storage can be obtained, but large storage assignments are not in scope for these projects.

Subscribe to the psi-hpc-at-cscs mailing list in order to get announcements.

CSCS Systems reference information

The PSI share offers access to the CSCS Alps Eiger (CPU multicore) and Daint (GPU) systems.

Contact information