Working with computer clusters takes place remotely via the Internet by connecting to a dedicated access server (login node), where the Centos7 Linux operating system with special cluster and task management tools is installed. After connection, you’ll be able to use the command line with Unix commands. You can also call graphical tools/windows from the command line. For using a cluster in graphical mode (X Windows or Remote Desktop), see section Cluster user interfaces.
Command line access parameters
Primary server address: ui-1.hpc.rtu.lv
Spared (ui-1 copy): ui-2.hpc.rtu.lv
The user name and password you received when you registered for the cluster access are used for authentication.
Access is provided from any IP address.
The connection to the cluster is via a Secure Shell (SSH) connection. For Windows operating system, you can use PuTTY software (download it from: http://www.putty.org/). The parameters you should enter are given above in the Command line access parameters section. The example is shown in the figure below.
After you open the connection, a user name and password are required. After entering them, it is possible to use a remote terminal with Unix commands.
When you use a Linux or MacOS operating system, you can connect to a cluster with SSH by opening the command line (terminal) and running the following command:
ssh -p [port] [username]@ui-1.hpc.rtu.lv
ssh -p 22 email@example.com
Command execution on an access server (including opening the application GUI) does not yet ensure that the task will automatically run on computing nodes. This requires you to use the task management tools described in section Task Management.
We invite to use the access server for copying files to/from cluster, preparing tasks, putting tasks in a queue, monitoring, testing short (<5 min.) tasks, and compiling on a few cores.