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@ -17,7 +17,7 @@ Slurm has been installed in a **multi-clustered** configuration, allowing to int
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* Two different Slurm clusters exist: **merlin5** and **merlin6**.
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* **merlin5** is a cluster with very old hardware (out-of-warranty).
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* **merlin5** will exist as long as hardware incidents are soft and easy to repair/fix (i.e. hard disk replacement)
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* **merlin6** is the default cluster when submitting jobs.
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* **merlin6** is the default cluster when running Slurm commands (i.e. sinfo).
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Please follow the section **Merlin6 Slurm** for more details about configuration and job submission.
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@ -25,9 +25,14 @@ Please follow the section **Merlin6 Slurm** for more details about configuration
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Keeping the **merlin5** cluster will allow running jobs in the old computing nodes until users have fully migrated their codes to the new cluster.
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From July 2019, **merlin6** becomes the **default cluster** and any job submitted to Slurm will be submitted to that cluster.
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However, users can keep submitting to the old **merlin5** computing nodes by using the option ``--cluster=merlin5`` and using the corresponding
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Slurm partition with ``--partition=merlin``. In example:
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From July 2019, **merlin6** becomes the **default cluster**. However, users can keep submitting to the old **merlin5** computing nodes by using
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the option ``--cluster=merlin5`` and using the corresponding Slurm partition with ``--partition=merlin``. In example:
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```bash
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#SBATCH --clusters=merlin6
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```
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Example of how to run a simple command:
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```bash
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srun --clusters=merlin5 --partition=merlin hostname
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@ -36,6 +41,15 @@ sbatch --clusters=merlin5 --partition=merlin myScript.batch
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### Merlin6 Access
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By default, any job submitted with specifying ``--clusters=`` should use the local cluster, so nothing extra should be specified. In any case,
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you can optionally add ``--clusters=merlin6`` in order to force submission to the Merlin6 cluster.
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In order to run jobs on the **Merlin6** cluster, you need to specify the following option in your batch scripts:
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```bash
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#SBATCH --clusters=merlin6
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```
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Example of how to run a simple command:
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```bash
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srun --clusters=merlin6 hostname
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sbatch --clusters=merlin6 myScript.batch
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```
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@ -22,11 +22,20 @@ but they will need to specify a couple of extra options to their scripts.
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```bash
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#SBATCH --clusters=merlin5
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#SBATCH --partition=merlin
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```
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By adding ``--clusters=merlin5`` it will send the jobs to the old Merlin5 computing nodes. Also, ``--partition=merlin`` needs to be specified in
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order to use the old Merlin5 partitions: ``general`` (*default*), ``daily`` and ``hourly`` will not work when submitting to Merlin5.
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By adding ``--clusters=merlin5`` it will send the jobs to the old Merlin5 computing nodes. Also, ``--partition=<merlin|gpu>`` can be specified in
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order to use the old Merlin5 partitions.
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## Running on Merlin6
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In order to run on the **Merlin6** cluster, users have to add the following options:
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```bash
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#SBATCH --clusters=merlin6
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```
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By adding ``--clusters=merlin6`` it will send the jobs to the old Merlin6 computing nodes.
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## Shared nodes and exclusivity
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