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Puhti and Mahti computing services have been decommissioned. Puhti and Mahti login nodes and storage services will remain available until 15 October 2026, but are no longer covered by service contracts. Please clean up and migrate your data to Roihu ASAP. See Roihu data migration guide for instructions.

Getting access to Rahti

Login using a CSC account

To use Rahti with a CSC account, you need:

  1. A CSC user account. You can find your "CSC Account" through MyCSC service.
  2. A CSC computing project that has enabled Rahti service.

Access to another CSC computing project, such as cPouta or Roihu, also counts as a valid computing project. You can use the same project for Rahti after you add Rahti to its list of enabled services.

Applying for access

Apply for Rahti access for a computing project in the MyCSC customer portal:

  1. Log in to MyCSC with your CSC account.
  2. Go to the My Projects page.
  3. Select the project you want to enable Rahti service for.
  4. In the list of CSC services, open Rahti's dropdown menu.
  5. Read and accept the Terms of Use, then press Apply for access.
  6. CSC will contact you once your application has been accepted.
  7. Wait up to 10 minutes for your profile and privileges to sync in Rahti.

If you do not have a suitable computing project for Rahti, you can create one in the MyCSC customer portal.

Creating a new computing project

Create a new computing project in the MyCSC customer portal:

  1. Log in to MyCSC with your CSC account.
  2. Go to the My Projects page.
  3. Scroll to the bottom of the page and click the Create a new project button.
  4. Give your project a name, description, and project type, then click Create project.
  5. CSC will contact you once your project has been created.

Please contact servicedesk@csc.fi if you need assistance.