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\[\[_TOC_\]\]
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## Introduction
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To execute non-interactive work on Pyrene, users can request resources from the cluster computing nodes by submitting batch jobs.
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The [Slurm](https://slurm.schedmd.com) scheduler manages the resource allocations for submitted batch jobs on Pyrene:
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* The cluster nodes are put in partitions. Each partition allows characterized by . Each partition corresponds to different characteristics
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* Depending on their situation, users are put in different Slurm accounts
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* A resource allocation must specify a partition, an account, and other parameters such as the maximal execution time and the maximal used memory of the job.
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To submit a job:
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```
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sbatch script.sh
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```
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## Job script examples
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Slurm job scripts contains two parts:
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1. Slurm directives: starting with #SBATCH, they specify Slurm options.
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1. Unix directives: commands to launch your job execution: module loading, program name, etc.
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Here are some self-explanatory job script examples for several softwares/applications on Pyrene:
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* Sequential (with test file)
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* Parallel, shared memory (OpenMP type)
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* Parallel, distributed memory (MPI with OpenMPI)
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* Parallel, distributed memory (MPI with Intel MPI)
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* Gaussian 09 / Gaussian 16
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* Molpro
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* NBO 6
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* OpenTelemac
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* R
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## Partitions and limits
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| **Partition** | **Nodes** | **Account** | **Max cores<br/>per job** | **Min mem<br/>per core (MB)** | **Max mem<br/>per core (MB)** | **Time limit** | **Preempted by** |
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| ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ |
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| short | n[001-032] | uppa | 8 | 1 | 2000 | 12 hours | - |
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| standard | n[001-032] | uppa | 8 | 1 | 2000 | 5 days | short |
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| long | n[001-032] | uppa | 8 | 1 | 2000 | 30 days | short, standard |
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| bigmem | bigmem01 | uppa | - | 2000 | 23000 | 5 days | - |
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| free | n[001-032] | free | - | 1 | 2000 | - | short, standard,<br/>long |
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| gpu | gpu01 | gpu | - | - | - | - | - |
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### Regular partitions
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* All users can use the following accounts: uppa, free
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* short, standard, long, bigmem
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### Special partitions
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* The free partition
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* The gpu partition is only accessible to the members of the gpu account
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## Accounting |
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\ No newline at end of file |
