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Difference between revisions of "Slurm Quick Start"
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→Slurm Cluster Quick Start Guide
(Created page with "== Slurm Cluster Quick Start Guide ==") |
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This page explains how to get the configure and run a batch job on the SLURM cluster from the head node.
== 1. Configuring SLURM ==
Slurm has 2 entities: a slurmctld controller node and multiple slurmd host nodes where we can run jobs in parallel.
To start the slurm controller on a machine we need to give this command from root:
$ systemctl start slurmctld.service
After running this, we can verify that slurm controller is running by viewing the log with the command:
$ tail /var/log/slurmctld.log
The nodes should be configured to run with the controller. You can see the information about available nodes using this command:
$ sinfo
[[File:Sinfo.png|left|frameless|509x509px]]
== 2. Running a Slurm Batch Job on Multiple Nodes ==
We can create python scripts and run these scripts in parallel on the cluster nodes. This is a simple example where we will print the task number from each node.
=== Create a Python Script ===
First we create a Python script which prints the system task number:
#!/usr/bin/python
# import sys library (needed for accepted command line args)
import sys
# print task number
print('Hello! I am a task number: ', sys.argv[1])
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