Louhi is part of the CSC computing environment. However, the full CSC computing environment is available on Louhi only on its login nodes. This means, among other things, that on the login nodes of Louhi one will have the same home directory and the same default Unix shell to use as in other CSC systems.

Before sending a batch job for execution you can, on the login node, copy all necessary files and programs for a batch job from the directories seen globally in the CSC environment to local directories of Louhi (seen only on the login nodes and compute nodes of Louhi). See Chapters Storing and moving files, Disks and Batch jobs and the batch system.

The default user shell in the CSC computing environment is tcsh. However, for batch jobs the Bourne shell (sh) or GNU Bourne Bourne Again SHell (bash) are recommended due to portability reasons. Bash is normally the default shell in Linux systems but also other available shells can be used (like tcsh on Louhi).

Louhi login nodes has 64-bit SuSE Linux Enterprise Server 10 operating system that provides all commonly used Linux utilities and tools for Louhi users.