University of Pretoria
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computing:hpcc:access [2015/08/24 17:33] (current)
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 +======= Access and General Usage =======
 +
 +===== General =====
 +
 +The clusters are available via Secure Shell (SSH) to all who have an EECE
 +Kerberos / AFS account. Please contact the Departmental System Administrator
 +for an EECE Kerberos / AFS account if necessary.
 +
 +Your AFS home directory will also be your home directory on the cluster nodes.
 +Undergraduate and postgraduate students can use any of the EECE lab computers
 +to access the clusters. Staff members will typically use their office computers
 +to access the clusters, but may also use the lab computers. Access to the
 +clusters is also possible from off-campus using the pass-through server, see
 +[[computing:​external]].
 +
 +The cluster machines are configured to transparently transfer user Kerberos /
 +AFS credentials and therefore provide a single sign-on environment. In other
 +words, you only have to type your password once.
 +
 +===== Connecting and File Transfer =====
 +
 +Connect (on campus) to the batch scheduler head node
 +**''​alpha1-1.ee.up.ac.za''​**. If you are logging in from wiener (or
 +any machine in our department),​ you need only use the hostname (i.e. **''​alpha1-1''​**).
 +
 +Connection can be established from any Linux machine running SSH, and X Windows
 +if graphical programs must be run. Files can be transferred to / from the
 +cluster head node using "​**''​scp''​**"​ or "​**''​sftp''​**"​ (included with the SSH
 +package). Note that if you are planning on running graphical programs, you must
 +ssh to the head node using "​**''​ssh -Y alpha1-1''​**"​. The extra
 +"​**''​-Y''​**"​ enables X11 forwarding on the SSH channel.
 +
 +Alternatively,​ a Windows with [[computing:​x2go:​index]] can be used.
 +
 +After you have connected, you have a shell on the node (similar to a "dos box"
 +on Windows). Unix commands and applications can be entered and executed
 +similarly to how you would in Windows. See the section [[computing:​hpcc:​unix]]
 +for a summary of the basic commands available.
 +