Logging in: SSH

External access to the School’s computer systems is normally via ssh to lewis.stp.dias.ie.
SSH clients are standard components of Unix, Linux and MacOS X, and free clients such as Putty, exist for MS Windows.

When logging in, before you give your username and password details, you need some proof that the remote machine is what it claims to be. Typically, the client presents you with a cryptographic fingerprint of the actual remote machine, and ask you to accept or reject it. But how are you supposed to know (or remember!) the right fingerprint?

+--[ RSA 2048]----+
|   .o+o.         |
|   .o o .        |
|     + .         |
|      o .        |
|       oS.       |
|      ... . .    |
|      ..oo o .   |
|     .Eo+.o . .  |
|     .++ o.. .   |
+-----------------+
+--[ DSA 2048]----+
|               E+|
|               +.|
|              .o+|
|     . .     .ooo|
|      + S    .o. |
|       =     .   |
|      . o o +    |
|         . B.o   |
|          oo=o.  |
+-----------------+
 +--[ECDSA  256]---+ |                 | |                 | |  o o            | | . = o   .       | |  . = o S .      | |   o o.o .       | |. . . .E         | |o+.  .. o        | |+o++...o..       | +-----------------+ 

File access: sftp, scp, rsync

• Only lewis.stp.dias.ie is directly accessible from the outside.

cluster.stp.dias.ie (on demand).

• The old ftp and rcp commands are disabled, replaced by sftp and scp respectively.
• The rsync command will only work if tunnelled over ssh (e.g. rsync -e ssh).

Machines accessible from lewis.stp.dias.ie

You can reach:

• higgs.stp.dias.ie for applications
• mathematica.stp.dias.ie for running mathematica
• compute machines (see below)

Computing in STP

• vcomputeX.xxx.dias.ie are virtual machines
• tesla.stp.dias.ie includes an Nvidia Tesla C2050 card with 5GB memory and 448 CUDA cores