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Project proposals

Employees of all Universities and research institutes in Germany can request access to HoreKa by submitting a project proposal. Project managers of a foreign research organization need a german partner who submits the proposal.

Use of HoreKa is free of charge, but the resource has to be acknowleged on all publications.

Full projects

Qualified users can apply for at least 2 and up to 70 million CPU hours and/or 1 million GPU hours per project on HoreKa. Management of the project proposals is performed using the JARDS project management platform. After finalizing a proposal via JARDS, the applications have to be printed, signed and a scanned copy has to be sent to

Checking the state of your application

Currently, only the area for submitting applications is activated inside of JARDS. The areas "Review" and "Projects" will be available in the next weeks. This will then allow you to check the state of your applications in the future.

Extended project description

During the application process you are required to upload an extended project description about 3 pages in length. The following topics have to be addressed in this document:

  • Research field (e.g. Physics, Chemistry, Electrical Engineering)
  • Underlying theory (e.g. Quantum Physics, Continuum Mechanics)
  • Description of goals (e.g. computation of helicopter aerodynamics)
  • Mathematical model (e.g. Navier-Stokes-Equations with turbulence model, Direct Simulation with Navier-Stokes-Equations)
  • Numerical methods (e.g. Finite Volume Method with Multigrid on unstructured tetrahedron grids)
  • Calculation of resources (CPU and GPU hours as separate values)
  • Practical relevance of expected results
  • Timeframe and workplan
  • Relevant literature or publications
  • Necessity for use of High Performance Computing (e.g. problem scope, turnaround time, answer time, resources, scalability)
  • Experiences of the applicant with HPC technologies, and
  • Results and limits from other platforms

Estimating the amount of resources needed

It can be hard to estimate how many resources (CPU hours / GPU hours) your project will need. The easiest way to find out is to apply for a test project before handing in the proposal for a full project.

Please keep in mind that individual compute nodes on HoreKa are always assigned to a single job exclusively. Please calculcate your resource consumption with 76 CPU cores per node, and not 152 CPU threads per node (see the Project accounting page).

Project Review

All proposals are reviewed by a multi-disciplinary steering committee. Projects are marked as preliminary until the review phase is over. During this time a project manager can already add contributors to the project (see the Manage project contributors chapter), and the project members are able to use HoreKa.

While a project is in preliminary state, usage is limited to a maximum of 5% of the requested compute hours or 500,000 CPU compute hours (whichever is more). The full amount of requested resources becomes available as soon as the project is fully granted by the steering board.

Should the steering board decline a project proposal, the associated accounts will lose access to HoreKa and no further computation is possible.

Project timeframe and extension

The effective end date of a project is always June 30. If a project application does not align with this date, the end date of the application wil be "rounded up" to June 30, potentially shifting the effective end of a project into the next calendar year. At the end of the project a status report must be provided to the HoreKa project management team. Project reports are always due by September 30 of the same calendar year the project ends in.

Full projects can be extended if the granted resources have been consumed before the effective end date of a project. Extending a project will involve a second review by the steering board, so please file the necessary follow-up proposal on JARDS in due time. Follow-up proposals can only be filed if they target the same research area as the original proposal.

Projects which still have resources left at the end of the effective end date will be automatically extended by one year if the status report is accepted by the steering committee.

Test projects

Test projects for activities like testing, porting, developing and benchmarking applications can be granted without an in-depth review by the steering committe. Proposals for test projects also have to be filed via JARDS, and are limited to a maximum of 500.000 CPU hours and/or 5.000 GPU hours.

Project type overview

Project type Resources Requirements
Test 500.000 CPUh Test project application granted
Preliminary < 500.000 CPUh Full project in review
Full as granted Full project granted

Last update: August 18, 2021