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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.

Shell

The shell apps can be found under Pinned Apps or on the top navbar under the Tools section. There are two different shells.

The Login node shell launches a normal Linux shell on one of the login nodes. Any command that is running when the login node shell browser tab is closed will stop. Note that the same rules apply here as during a normal SSH session:

Error-label

Login nodes are only for light pre/postprocessing (see usage policy).

The Compute node shell launches a persistent shell on a compute node for heavier commands that should not be run on login nodes. The persistent shell will keep running even if you close your browser or lose internet connection.