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docs/gmerlin6/hardware-and-software-description.md
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---
title: Hardware And Software Description
#tags:
#keywords:
last_updated: 19 April 2021
#summary: ""
sidebar: merlin6_sidebar
permalink: /gmerlin6/hardware-and-software.html
---
# Hardware And Software Description
## Hardware
### GPU Computing Nodes
The GPU Merlin6 cluster was initially built from recycled workstations from different groups in the BIO division.
From then, little by little it was updated with new nodes from sporadic investments from the same division, and it was never possible a central big investment.
From then, little by little it was updated with new nodes from sporadic investments from the same division, and it was never possible a central big investment.
Hence, due to this, the Merlin6 GPU computing cluster has a non homogeneus solution, consisting on a big variety of hardware types and components.
On 2018, for the common good, BIO decided to open the cluster to the Merlin users and make it widely accessible for the PSI scientists.
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In the Merlin6 GPU computing nodes, we try to keep software stack coherency with the main cluster [Merlin6](../merlin6/index.md).
Due to this, the Merlin6 GPU nodes run:
* [**RedHat Enterprise Linux 7**](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.9_release_notes/index)
* [**Slurm**](https://slurm.schedmd.com/), we usually try to keep it up to date with the most recent versions.
* [**GPFS v5**](https://www.ibm.com/support/knowledgecenter/en/STXKQY_5.0.2/ibmspectrumscale502_welcome.html)