1. Open the terminal/shell:
1.1 [Windows]
There are multiple ways to ssh to Ubuntu computer with GUI forwarding from Windows.
We suggest connecting to https://vdi.aalto.fi (but feel free to use any other method):
Connect to aalto VDI. Using this tutorial for help:
https://www.aalto.fi/en/services/vdiaaltofi-how-to-use-aalto-virtual-desktop-infrastructure
Select "Ubuntu 18.04" server.
When connected to VDI Ubuntu server, open the terminal by clicking the shortcut on the left bar.
Continue from step 3.

1.2 [Ubuntu/MacOS]
Ubuntu: Ctrl+Alt+T
MacOS: Press CmdSpace to open spotlight search, and type terminal and hit return.

2. Open an ssh connection to one of the general-purpose Linux servers: kosh.aalto.fi, lyta.aalto.fi.
Using command:
ssh -X USERNAME@kosh.aalto.fi
or
ssh -X USERNAME@lyta.aalto.fi
respectively.
where USERNAME is your aalto username, for example doej1 (John Doe)
Enter your password on prompt.

3. Open an ssh connection to any of the Maari computers:
Using command:
ssh -X COMPNAME
where COMPNAME is one of the Maari computers' name, listed here (check Maari-A or Maari-B section):
https://www.aalto.fi/en/services/linux-computer-names-in-it-classrooms
Use command htop to see if the computer is busy with someone else. If it is, use command logout and try to ssh to another computer

Note: If this does not work, please try to run first kinit and enter your password to renew your Kerberos tickets (required once a week).

4. Now you are using one of the Maari computers.
You can load for example OpenFOAM 7 with command:
source /opt/openfoam7/etc/bashrc