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Warning!

Puhti and Mahti are being decommissioned in stages, and their storage areas will become fully unavailable from 15 October 2026. Clean up unnecessary files and move any data you need to keep by 31 August 2026. See the Roihu data migration guide for instructions on transferring your data to Roihu.

Puhti computing services have been decommissioned and no new jobs are accepted or executed on its compute nodes. Puhti login nodes and storage services are planned to remain available until 15 October 2026.

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.