BioMonth - CSC supercomputing and data management for bioscientists

Log in Puhti with ssh

This tutorial requires that you have a user account at CSC and it is a member of a project that has access to Puhti service.

Different operating systems have a little bit different SSH-clients (programs that you can use to take the connection with).

Windows10

On Windows 10, you can use the Windows Power Shell or download Putty, or download and install MobaXterm.

In this tutorial, we assume you use Windows Power Shell. More examples can be found in docs](https://docs.csc.fi/computing/connecting/).

Select Windows Power Shell from the applications list (opens from the windows logo) or search for it in the bottom bar search box.
In the windows-blue terminal window type:
```
ssh <your_csc_username>@puhti.csc.fi
```
replace above <your_csc_username> with your actual csc username, or training account which ever you’re using, and press enter

MacOS

In MacOS, you can use Terminal similarly as with Linux machines (see below). Simply open the Terminal application and type:

ssh <your_csc_username>@puhti.csc.fi

Linux

Laptops and workstations running Linux typically have SSH installed. Simply open a terminal and give:

ssh <your_csc_username>@puhti.csc.fi

if you’re connecting to Puhti (or that Puhti login node) for the first time, SSH will ask you if you trust the authenticity of the host, e.g.:

The authenticity of host 'puhti-login1.csc.fi (86.50.164.166)' can't be established.
ECDSA key fingerprint is SHA256:EXhadfadsfsaffasjhdlfjhasdlfkjhadsl.
Are you sure you want to continue connecting (yes/no/[fingerprint])?

the first time you connect, you need to accept, but the key should not change for the next login (but be sure to check whether it’s login1 or login2).
Once you’ve logged in you’ll see a greeting starting something like this: ``` Last login: Mon Dec 14 14:53:15 2020 from jabadabaduu.fi ┌─ Welcome ───────────────────────────────────────────────────────────────────┐ │ CSC - Tieteen tietotekniikan keskus - IT Center for Science │ │ _ __ __ _ │ │ / __ __ __/ /_ / /_(_) - - - - │ │ / /_/ / / / / __ \/ __/ / - - - - │ │ / __/ // / / / / // / - - - - │ │ // _,// //_// - - - - │ │ │ │ Puhti.csc.fi - Atos BullSequana X400 - 682 CPU nodes - 80 GPU nodes │ ├─ Contact ───────────────────────────────────────────────────────────────────┤ │ Servicedesk : 09-457 2821, servicedesk@csc.fi Switchboard : 09-457 2001 │ ├─ User Guide ────────────────────────────────────────────────────────────────┤ │ https://docs.csc.fi │ ├─ Manage my account ─────────────────────────────────────────────────────────┤ │ https://my.csc.fi/ │ …

└─────────────────────────────────────────────────────────────────────────────┘ [@puhti-login1 ~]$ ``` Now, you're ready to go. Note, however, that remote graphics will not work. You could add X11-tunneling to your ssh-connection, by adding `-X` or `-Y` to your command, and [in Windows a separate X11-emulator](), but [for intesive remote graphics we recommend using NoMachine]().

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