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Essi Documentation

This page documents the hardware, software, and policies surrounding this resource.

Operating System

This cluster currently runs Ubuntu version 12.04 for the x86-64 with custom additions by CSE. The major customizations include (but are not limited to) ganglia, OpenMPI, cobbler, SLURM, and Puppet.


Requests for any centrally installed software should go to Any software that is available in Ubuntu is also available for installation or already installed on this cluster. We have set up a page that has details on the current software configuration. We use Environment Modules to manage the environment. A quick into:

  • To get a list of available applications and libraries - module avail
  • To setup your command line or script based environment - module load <directory/application>

Documentation on some of the custom installed software is at HPC Software Documentation.


Ganglia is available but an SSH tunnel is required to view. For example:

ssh -L

The URL to get to the ganglia page would then be http://localhost:50087/ganglia

In a Linux environment you might create an alias in your .bashrc file:

alias essiganglia='ssh -L'

The command essiganglia would then create the tunnel.


The hardware for stats is made up of the following:

Head Node

  • 2 AMD Opteron Interlagos 6234 processor, 12 cores per processor, 2.4GHz, 16MB L3 Cache
  • Approximately 11TB of usable disk (8x2TB Western Digital RE4 WD2003FYYS 2TB)
  • 32GB DDR3 RAM
  • Mellanox QDR Infiniband ConnectX-3 (MT27500)

Compute Nodes

  • 8 compute nodes
  • 2 AMD Opteron 6234 Processors per node, 12 cores per processor, 2.4GHz, 16MB L3 Cache
  • 32GB DDR3 RAM per node
  • 1 1TB drive per node: Seagate Constellation ES ST1000NM0011 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s
  • IPMI 2.0 for on/off/console.
  • Mellanox QDR Infiniband ConnectX-3 (MT27500)

The rest

  • 1 48-port HP ProCurve 1810-48G
  • 1 KVM console
  • 1 APC rack
  • 1 managed PDU
support/systems/essi.txt · Last modified: 2012/12/06 13:10 by tlknight