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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.

X11 remote graphics does not work

Remote graphics requires tunneling X11 through SSH using the -X flag. On Linux, connect to e.g. Puhti using:

ssh -X <your-user-name>@puhti.csc.fi

An error may occur if you have run out of disk quota.

Another (better) way to run remote graphics is to use a remote desktop through the Puhti web interface.

For more details, see our instructions for graphical connections.