Cluster: Difference between revisions

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<pre>ssh username@icecube.iihe.ac.be
<pre>ssh username@icecube.iihe.ac.be
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</pre>  
TIP : icecube.iihe.ac.be points automatically to available UI's
After a successful login, you'll see this message&nbsp;:<br>
After a successful login, you'll see this message&nbsp;:<br>
<pre>==========================================
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==========================================
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username@uiXX:~$
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</pre>  
Your default current working directory is your home folder (/user/username), this one is shared amoung the whole cluster<br>
Your default current working directory is your home folder (/user/username), this one is shared amoung the whole cluster<br>


 
<br>


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Revision as of 10:31, 13 February 2014

IIHE local cluster

Overview

The cluster is composed by 4 machine types :

  • User Interfaces (UI)

This is the cluster front-end, to use the cluster, you need to log into those machines

  • Computing Element (CE)

This server is the core of the batch system : it run submitted jobs on worker nodes

  • Worker Nodes (WN)

This is the power of the cluster : they run jobs and send the status back to the CE

  • Storage Elements

This is the memory of the cluster : they contains data, software, ...

How to connect

To connect to the cluster, you must use your IIHE credentials (same as for wifi)

ssh username@icecube.iihe.ac.be

TIP : icecube.iihe.ac.be points automatically to available UI's


After a successful login, you'll see this message :

==========================================
Welcome on the IIHE ULB-VUB cluster

Cluster status http://ganglia.iihe.ac.be
IT Help support-iihe@ulb.ac.be
==========================================

username@uiXX:~$

Your default current working directory is your home folder (/user/username), this one is shared amoung the whole cluster



Batch System

Queues

The cluster is decomposed in queues

any lowmem standard highmem gpu
Description
CPU's
Walltime default/limit
Memory default/limit


Job submission

To submit a job, you just have to use the following command :

qsub job.sh

OPTIONS

-q queuename : choose the queue (default: any)

-N "JobName" : name of the job

-m : mail options

-l : resources options

Useful links

Ganglia Monitoring : Servers status

JobMonArch : Running jobs overview