===== MSM3 Cluster =====

One of the clusters at the University is the MSM3 Cluster

This HPC cluster is a collection of many separate servers (computers), called nodes, which are connected via a fast interconnect.

There may be different types of nodes for different types of tasks. The HPC cluster listed on this wiki has

a headnode or login node, where users log in
  * regular compute nodes (where computations are running)

This cluster is based on the **[[https://www.schedmd.com/index.php|Slurm scheduler]]** running on Ubuntu.

=== Hardware Specifications MSM3 Cluster ===

^Node name^Cores^Memory^CPU^purchase date^
| msm3 | 18 cores (HT 36) | 128 Gb | Xeon CPU E5-2695 v4 @ 2.10GHz | 24 November 2016 |
| msm3node01-03 | 36 cores (HT 72) | 192 Gb | Xeon CPU E5-2695 v4 @ 2.10GHz | 23 Oktober 2016 |
| msm3node04-11 | 36 cores (HT 72) | 64 Gb | Xeon CPU E5-2695 v4 @ 2.10GHz | 24 November 2016 |
  
http://ark.intel.com/products/91316/Intel-Xeon-Processor-E5-2695-v4-45M-Cache-2_10-GHz \\
\\
The nodes are connected by InfiniBand and the cluster is located in "het SeinHuis".

===  Login Nodes === 
You can connect to the headnode : msm3.ctw.utwente.nl\\
\\
==== Slurm ====
We now use the new Slurm scheduler instead of searching for a free node and run our calculations\\
for info see [[slurm:start|Slurm]] and [[https://slurm.schedmd.com/quickstart.html|the Slurm quickstart]]
\\
==== Maintenance. ====
last maintenance was 
  * 22-24 March 2022
next planned maintenance 
  * ??
During the maintenance day, the whole cluster will go offline.
==== Software. ====

The cluster machines run on Ubuntu 20.04, some basic packages in the repositories have been installed.
Additional software is available using module files.

See the **[[msm3_cluster:software|MSM3-cluster Software page]]** for more information.