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====== How to access the Aurora Cluster ======

The Aurora cluster is part of the [[http://www.snic.se/|SNIC infrastructure]] and is managed by [[http://www.lunarc.lu.se|Lunarc]]. This means that to access it, a user needs to have a SNIC account and has to join a specific project.

The current Lunarc login system is based on a one time password shared via mobile phone. This means that to access Aurora **you must be able to receive SMS**. Currently there is no other way of accessing the cluster.

===== Prerequisite: Get a SUPR account =====

Follow these steps:

  - Create an account on https://supr.snic.se/
    - :!: Insert your mobile phone information. It is **needed** to access aurora. 
  - Login on SUPR and choose to join a project based on the table below
    - :!: Make sure to request an Aurora @ Lunarc account by following the link on the left panel (or https://supr.snic.se/account/) 
  - Wait to receive a password from Lunarc
  - **IMPORTANT: ACTIVATE** your account by following these instructions:
    - https://lunarc-documentation.readthedocs.io/en/latest/authenticator_howto/
    - You can now login via SSH or graphical interface, see below.

^ Your division - Project ^ Project Name ^ URL ^
| Nuclear Physics | **HEP 2016/1-3** | https://supr.snic.se/project/4648/ |
| Particle Physics | **HEP 2016/1-4** | https://supr.snic.se/project/4649/ |
| Particle Physics - LDMX | **LU 2021/2-100** | https://supr.snic.se/project/20962/ |
| Theoretical Physics | **HEP 2016/1-5** | https://supr.snic.se/project/4650/ |
| Mathematical Physics | **LU 2021/2-125** | https://supr.snic.se/project/21146/ |


===== SSH - Shell access =====

Once you have a SUPR account, you can login to Aurora using the username and password that Lunarc gave you, and remember that you need a mobile phone to complete access.

==== Required software: ====
On Linux or Mac, you should have the **ssh client** already installed.
On Windows you can use putty and optionally some XWindows emulator. More info here: [[it_tips:xwindowswithmswindows]]

==== Login procedure ====

access aurora via the hostname ''aurora.lunarc.lu.se'', example:
<code bash> ssh -X username@aurora.lunarc.lu.se </code>

When asked about the OTP code, check your mobile phone and insert the code you just received.

You will be logged in to the **frontend node**. :!: NOTE: :!: it is NOT possible to run your code on the frontend node. This is a very big difference to Iridium. Your code can only run on the dedicated nodes.
If you run stuff on the frontend you will be kicked out of the cluster.
Please follow the guide [[aurora_cluster:running_on_aurora]] to know how to run your code.

Generic login documentation from Lunarc is here:
http://lunarc-documentation.readthedocs.io/en/latest/login_howto/

===== Lunarc Graphical Desktop =====

Lunarc Graphical Desktop is a full desktop solution that runs in front of the cluster.
You can start your jobs and have your text editors always open and just disconnect.
Every time you log back in you will have your work environment already up and running.

Information how to use and access this feature is here:
http://lunarc-documentation.readthedocs.io/en/latest/using_hpc_desktop/
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