This is an old revision of the document!
Q: Why do I need this?A: You need this if you want to test your code on some powerful machine.
The cluster has two testing nodes accessible from anywhere that should be used for testing your code.
|nptest-iridium.lunarc.lu.se||test node for nuclear physics|
|pptest-iridium.lunarc.lu.se||test node for particle physics|
They can also be used from time to time to host courses.
They are meant for interactive access to the cluster, as opposed to the
arc-iridium.lunarc.lu.se batch interface that can be used for batch submission of jobs. (link and explanation will come)
These nodes can be simply accessed via ssh. Ask Florido Paganelli or Pico for access credentials.
One can speed up access to the cluster by using the ssh
config file (read here for detailed explanation). You can copy-paste the following into your
# access pptest-iridium Host pptest-iridium HostName pptest-iridium.lunarc.lu.se User <username on iridium> ForwardX11 yes # directly access iridium node X (change X to your preferred node!) Host iridiumnX User <Username on iridium> ForwardX11 yes ProxyCommand ssh -q pptest-iridium.lunarc.lu.se -W nX:22
# access nptest-iridium Host nptest-iridium HostName nptest-iridium.lunarc.lu.se User <username on iridium> ForwardX11 yes # directly access iridium node X (change X to your preferred node!) Host iridiumnX User <Username on iridium> ForwardX11 yes ProxyCommand ssh -q nptest-iridium.lunarc.lu.se -W nX:22
Administrators provided scripts for quick setup of your work enviroment.
Just execute the command in the column Script to run at the shell prompt, or add it to your
.bash_profile file so that is executed every time you login.
The following are active now:
|Environment||Script to run||Description|
|ATLAS Experiment environment|| ||Will setup all the neeeded environment variables for ATLAS experiment, and present a selection of other environments that the user can setup.|
Every node has a local
/tmp temporary disk space that can be used for computations. The contents of such space will be deleted regularly. Users can put any sort of data there.