LUMI is one of the fastest supercomputers in the world. Below you find details on how to log in to LUMI cluster.

If you are have an CSC account, you need to follow the procedures in the link below to link your existing accounts: https://docs.csc.fi/accounts/how-to-manage-user-information/#how-to-link-your-csc-user-account-to-external-authentication-sources

1. Receive an invitation email from LUMI

After we add you to one project on LUMI, you will automatilly get an email with following information:

This is a message from your LUMI supercomputer self-service portal
(my.lumi-supercomputer.eu).

XXX has invited you to join LUMI-C and LUMI-G for training purposes (XXX) project.

Please visit the link below to sign up and accept your invitation:
https://my.lumi-supercomputer.eu/invitation/xxxxxxxxxx/

Note: this invitation has an expiration date, please manage your access as soon as possible.

2. Registration at MyAccessID

In order to access the portal, you need to register at MyAccessID. This procedure can be achieved via the Sign in with MyAccessID.

HERE are the detailed procedures for you to register at MyAccessID.

3. Generate a local SSH key pair for your local computer

If you want to use LUMI from a terminal, you need to register an SSH key pair. The SSH keys are the only way to connect to LUMI when using a Linux, macOS or Windows PowerShell terminal, or MobaXterm or PuTTY from Windows. There is no option for using passwords.

LUMI only accepts SSH keys based on the RSA (4096 bit) or ed25519 algorithms. If possible, we recommend to use ed25519.

HERE are instructions generate an appropriate SSH key pair from your computer.

4. Register your public SSH key at MyAccessID

• Login to MyAccessID profile management page
• Click Settings from the left-side menu.

• Click on SSH Keys MyAccessID settings
• Click on New Key and then add the public part of your SSH key and save the key by clicking Add SSH key

• Wait 1-2 hours for the key to propagate to the cluster

5. Login to LUMI

In the next few hours you will receive emails with your LUMI username and project access information.

You can access to LUMI using the command below.

ssh -i <path-to-private-key>/id_ed25519 <username>@lumi.csc.fi

If you set the passphrase for key id_ed25519 when you generate the SSH key, you will be asked to enter the passphrase for the SSH key.

If everything goes well, you will see the info on your terminal.

For more information on how to access EuroHPC JU systems visit https://enccs.se/get-supercomputer-access/.

6. Login to LUMI via Web Interface

You can also login to LUMI via web interface. Click the Go to login button and you will come to the webpage with pinned apps.

6.1 Login node shell

Click the Login node shell button and you can login to LUMI via the web browser. You can also change the theme using the button on the upper right corner.

6.2 Home Directory

Click the Home Directory button and you can come to the webpage like this

In this webpage, you can open a terminal, create files and new directories. You can also upload files from local computer to LUMI, and download files from LUMI to your local computer.

6.3 Other IDEs

You can also use other IDEs for your project, for example, the VS Code and Jupyter notebook for your project using Python and Julia for programming.