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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.

Moving files using the HPC web interfaces

Note

Uploaded files will overwrite existing files with the same name without prompting. Currently, the maximum size for individual file uploads is 10 GB.

Files can be uploaded and downloaded to/from CSC supercomputers using the file browser functionality of Puhti, Mahti and LUMI web interfaces. The file browser can be opened from the Files menu in the top navigation bar. This displays a list of all project disk areas you have access to (example for Puhti below).

Puhti web interface front page

In the file browser you can:

  • Upload files (drag&drop or by browsing your local folders)
  • Download files
  • Manage files on the supercomputer (copy/move/edit/delete)
  • Create new files/directories
  • Open a command-line shell in the current directory

Puhti web interface file browser