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How to login in TeideHPC?#

In order to have redundancy and high availability for access to the infrastructure, TeideHPC has 2 access nodes, called Login nodes and they share all your data. That is to say, regardless of which one you connect to, your data will be accessible.

To ensure that the number of users is not concentrated in a single login node, which eventually ends up saturated due to access preferences and unintentional user executions, a load balancer has been set up, which is responsible for distributing to the users equally in both login nodes, having a single DNS and access IP, easier to remember.

DNS IP Address
login.hpc.iter.es 10.5.22.100

However, once you access, it is possible to go from one node to another without any type of restriction:

ssh login1  or
ssh login2

Linux & macOS user access#

Using a terminal:

ssh myuser@IPaddress  or
ssh myuser@login1.hpc.iter.es

Remember you can add our DNS folloging these instructions.

SSH Alias#

In order to make it easier to work and not remember the server's IP, we can use an alias to save the SSH connection. To do this, edit the file ~/.ssh/config and add the following (if it does not exist, create it):

Host teidelogin
    Hostname 10.5.22.100
    User myuser

Now to connect via SSH to the login nodes we can do it in the following way:

ssh teidelogin1

Windows user access#

Windows users have several alternatives to connect via SSH to the login nodes: PuTTY and MobaXterm:

SSH remote access with PuTTy#

PuTTy is a network client that supports the SSH, Telnet and Rlogin protocols and is mainly used to initiate remote session with another machine or server. It is free licensed, simple and highly functional and configurable.

Once downloaded it's necessary to follow next steps in order to open a session in TeideHPC supercomputer.

Putty applicacion

  1. In the category menu select Session.

  2. Set the domainname or IP address in the field Host Name and select SSH as the connection type.

  3. Choose a name for the connection and fill the field Saved Sessions. (Eg TeideHPC)

  4. Choose a name for the connection and fill the field Saved Sessions. (Eg TeideHPC)

  5. Save the configuration with the Save button.

  6. Open a connection to the login node with Open.

Tips:

  • For slow connections you can enable compression. You can find a checkbox in the Connection > SSH menu.

  • SSH version 2 must be set as the preferred protocol version in Connection > SSH menu.

MobaXterm#

MobaXterm is a toolbox for working remotely. In a single application it provides a lot of functions (SSH, X11, RDP, VNC, FTP, sFTP, MOSH, unix commands) that are designed for programmers, webmasters, IT administrators and practically all users who need to manage their remote work from a simpler way.

The free version has certain limitations, such as the number of simultaneous sessions, but you can use it without problems.

Follow this link for a guide.

MobaXterm