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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.

VS Code Remote-SSH plugin gives out-of-memory error when connecting to CSC supercomputers

Connecting to CSC supercomputers using VS Code versions 1.101 and later may fail with error Out of memory: Cannot allocate Wasm memory for new instance. There are three workarounds to avoid this issue:

  1. Add to your .bashrc file on CSC supercomputers the line export NODE_OPTIONS="--disable-wasm-trap-handler", or
  2. increase login node virtual memory limit by adding the line ulimit -v "$(ulimit -Hv)" to your .bashrc file on CSC supercomputers, or
  3. downgrade your VS Code version to 1.100.