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Warning!

Puhti and Mahti will be decommissioned after Roihu becomes available. Users should clean up unnecessary files and move any required data by the end of August 2026. See the Roihu data preparation instructions for details.

Puhti scratch is very full: keep only active data there and move or delete everything else. No new Puhti scratch quota will be granted.

How to get access to Puhti

To get access to Puhti, you need a CSC account and a project with Puhti service enabled. Please see How to add service access to a project.

Common problems and some tips

  • Note that you need to accept the terms of use for Puhti in MyCSC before you can access Puhti. Also note that there is some delay before the information is synced to Puhti.
  • To access Puhti using an SSH client, you must set up SSH keys and add your public key to MyCSC. See instructions and a tutorial.
  • You can check which projects you have in MyCSC, and in the Services list of that project you can see which services are enabled.
  • In Puhti, csc-projects command will show you information about your projects on the command-line.