LUMI Sweden Fall 2026 call¶

This is the application round for large allocations on the Swedish share of the LUMI system. Available resources are listed on the Swedish User and Project Repository (SUPR) website. Awarded projects start on 1 January 2027 and have a duration of 12 months.

News¶

• The LUMI-C is no longer considered a supplementary resource to LUMI-G. Large requests for LUMI-C only are no longer discouraged.

• The project publication lists for earlier NAISS projects should not be included as text in the uploaded Activity Report PDFs. Instead, you register publications resulting from the projects (and acknowledging the use of NAISS resources) via DOIs in SUPR. This will enable NAISS to better present the large scientific output resulting from the use of our resources. The publication list you include as part of the Large proposal itself is still uploaded as a PDF.

• Financial support is now entered in a table with a row for each grant or similar instead of being a free-text field.

Due to the changes described above, you might need to allocate a bit more time than usual this year to complete your proposal.

The LUMI consortia encouraged you to distribute your resource consumption as evenly as possible over the project lifetime since they cannot guarantee that capacity is available at the end of the project duration.

If a LUMI-C or LUMI-G project has not used more than 40 percent of its allocation at the six-months point, the allocation will be reduced to 60 percent of the original respective allocation (ie -40 percent).

Please note that storage, if required, has to be applied for within the call. LUMI storage is billed on a running-cost basis. You have to apply for a total number of TB x hours, not the maximum disk quota. Storage is applied for using TB hours. Flash storage, LUMI-F, is accounted at ten times the TB-hour rate, i.e. using 1TB of flash storage for one hour costs 10TB hours. Lustre storage, LUMI-P, is accounted at the TB-hour rate. CEPH object storage, LUMI-O, is accounted at 0.5 times the TB-hour rate, i.e. using 1TB of CEPH storage for one hour costs 0.5TB hours.

You may combine the three types of storage at your own discretion as long as you stay within the quota approved for your project and never exceed it for any of the storage types at any time. You may need to contact the LUMI helpdesk at the start of the project to raise your maximum disk quota if you have large storage allocations.

Who is eligible to apply?¶

To apply, you have to be a researcher with an established track record of using HPC efficiently for your projects, with resource requirements that exceed the limits of what can be applied for in the NAISS Medium application rounds.

The PI is responsible for the proposal and usage of any granted resources.

You must be at least an assistant professor at an eligible Swedish institution. NAISS is financed by Swedish tax payers with the objective to strengthen science and research in Sweden. To apply for these resources, the PI must therefore hold an appointment of at least 60 percent at a Swedish university or research institution recognised by the Swedish Research Council.

The research supported by these resources must be predominantly carried out in Sweden. This aspect is taken into account during the evaluation and, in the case of strong competition, can be used to prioritise applications. Additionally, the applicant must have experience as PI for a project allocated HPC resources at least at the Medium level, or a corresponding level abroad.

How to register a proposal¶

Register your proposal via the SUPR website.

Project information¶

When registering a proposal in SUPR you must always provide the following basic information:

• Project title
• Affiliation - name of university/institute or similar
• Abstract - a project abstract in English
• Classification - according to Research Council classification codes

For Large Compute projects you also have to upload three separate PDF files with the following:

1. The CV of the PI. Maximum 2 pages.
2. A publication list of the PI.
3. A project description. Please respect maximum page limits for all sections. If it is an updated version of the document from an earlier proposal, please highlight changes. Detailed instructions are here and in SUPR when clicking the "Add Project Description" button in the proposal registration form.

Activity report¶

If you have previously been granted NAISS resources, you have to upload activity reports for those projects to be eligible for new allocations. Include an explanation for any major deviations from the originally planned usage.

Review and notification of results¶

The review process commences after the allocations round has closed. Proposals are subject to scientific and technical review. Scientific review is performed by NAC and external evaluators, while technical review is performed by NAC WG (the NAC Working Group).

Decisions about the LUMI Sweden Fall 2026 round will be announced by email in November.