View source for Change of global default for software stack

==Introduction==
On Euler we provide [[New_SPACK_software_stack_on_Euler|two software stacks (old/new)]]. Users can switch between the software stacks in the current shell, using the commands [[New_SPACK_software_stack_on_Euler#Switching_between_software_stacks|env2lmod and lmod2env]]. There is a global default, that the old software stack is initialized upon login. Users can permanently change this by setting a personal default that supersedes the global default, using [[Setting_permanent_default_for_software_stack_upon_login|the script set_software_stack.sh]].

==Changing personal default==
You can check your personal default by running the command

 set_software_stack.sh -i

To change the permanent default to the new software stack, use the command

 set_software_stack.sh new

and for changing it to the old software stack, use the command

 set_software_stack.sh old

You can change your default at any time. After a change, you would need to logout and login again to make the change becoming active.

==New global default==
We are changing the '''global default''' upon login from the old to the '''new software stack'''. This only affects users which have not set a personal default yet. If you have set a personal default with the script set_software_stack.sh, then '''nothing will change for you''', as the personal default supersedes the global one.

==Timeline==
Will be announced soon

==How to keep the old software stack as default==
If you need to continue to work with the old software stack, it is sufficient to set it as default with the command

 set_software_stack.sh old

and to logout and login again, then everything will be the same as before.