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---
title: Accessing Slurm Cluster
#tags:
keywords: slurm, batch system, merlin5, merlin7, gmerlin7, cpu, gpu
last_updated: 07 September 2022
#summary: ""
sidebar: merlin7_sidebar
permalink: /merlin7/slurm-access.html
---
## The Merlin Slurm clusters
Merlin contains a multi-cluster setup, where multiple Slurm clusters coexist under the same umbrella.
It basically contains the following clusters:
* The **Merlin7 Slurm CPU cluster**, which is called [**`merlin7`**](/merlin7/slurm-access.html#merlin7-cpu-cluster-access).
* The **Merlin7 Slurm GPU cluster**, which is called [**`gmerlin7`**](/merlin7/slurm-access.html#merlin7-gpu-cluster-access).
## Accessing the Slurm clusters
Any job submission must be performed from a **Merlin login node**. Please refer to the [**Accessing the Interactive Nodes documentation**](/merlin7/interactive.html)
for further information about how to access the cluster.
In addition, any job *must be submitted from a high performance storage area visible by the login nodes and by the computing nodes*. For this, the possible storage areas are the following:
* `/data/user`
* `/data/project`
* `/data/scratch/shared`
### Merlin7 CPU cluster access
The **Merlin7 CPU cluster** (**`merlin7`**) is the default cluster configured in the login nodes. Any job submission will use by default this cluster, unless
the option `--cluster` is specified with another of the existing clusters.
For further information about how to use this cluster, please visit: [**Merlin7 CPU Slurm Cluster documentation**](/merlin7/slurm-configuration.html).
### Merlin7 GPU cluster access
The **Merlin7 GPU cluster** (**`gmerlin7`**) is visible from the login nodes. However, to submit jobs to this cluster, one needs to specify the option `--cluster=gmerlin7` when submitting a job or allocation.
For further information about how to use this cluster, please visit: [**Merlin7 GPU Slurm Cluster documentation**](/gmerlin7/slurm-configuration.html).