There are several options users may take to work on the cluster:
- command line (remote terminal) interface
- graphical interface of application software (GUI);
- web interface.
Command line. That is a traditional manner of accessing the cluster. A user uses the Internet to connect to a remote terminal (through a secure shell (SSH) protocol usually) where commands can be executed in a text mode. It is possible to edit and compile a code, place a job (simulation) in the queue, and monitor the job’s course of execution. Graphical tools can also be called from a command line. Instructions in this guide are mainly intended for command-line access.