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This page shows you how to run submit a bash script to Slurm. The runSingle script, accessible through the rcbio/1.23.3 module, converts an input bash script with sbatch command and submits a single job to the Slurm scheduler for you.

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Please read below for an example.

Log on to O2

If you need help connecting to O2, please review the Using Slurm Basic and the How to Login to O2 wiki pages.

From Windows, use the graphical PuTTY program to connect to o2.hms.harvard.edu and make sure the port is set to the default value of 22.

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ssh user123@o2.hms.harvard.edu

Start interactive job, and create working folder

For example, for user abc123, the working directory will be

srun --pty -p interactive -t 0-12:0:0 --mem 2000MB -c 1 /bin/bash
mkdir /n/scratch3/users/${USER:0:1}/${USER}/test
cd /n/scratch3/users/${USER:0:1}/${USER}/test

Load the pipeline related modules

# This will setup the path and environmental variables for the pipeline
module load rcbio/1.3.23

The bash script

cp /n/app/rcbio/1.3.23/bin/bashScript.sh .
# Run cat command to show the content of bashScript.sh
cat bashScript.sh

#!/bin/sh
for i in A B; do            

    echo John >> John.txt; echo Mike >>  Mike.txt       
  
    echo Nick >> Nick.txt; echo Julia >>  Julia.txt

done

cat John.txt Mike.txt Nick.txt Julia.txt > all.txt

Submit the script to Slurm:

runSingleJob "bash bashScript.sh" "sbatch -p short -t 10:0 -c 1"


# Below is the output
Running flag/slurmPipeLine.202103311551.run.sh
module list:

Currently Loaded Modules:
  1) gcc/6.2.0   2) python/2.7.12   3) rcbio/1.3.23

depend on no job
sbatch -p short -t 10 -c 1 --mail-type=FAIL --nodes=1  -J Job_bash_bashScript.sh -o /home/ld32/rcbio/flag/Job_bash_bashScript.sh.out -e /home/ld32/rcbio/flag/Job_bash_bashScript.sh.out /home/ld32/rcbio/flag/Job_bash_bashScript.sh.sh
# Submitted batch job 43976

Monitoring the jobs

You can use the command:

squeue -u $USER

To see the job status (running, pending, etc.). You also get two emails for each step, one at the start of the step, one at the end of the step.

Check job log

You can use the command:

ls -l flag

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You also get two emails for each step, one at the start of the step, one at the end of the step.

Re-run the job

You can rerun this command in the same folder

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This command will check if the earlier run is finished or not. If not, ask user to kill the running jobs or not, then ask user to rerun the successfully finished steps or not. Click 'y', it will rerun, directly press 'enter' key, it will not rerun. 

To run your own script as Slurm pipeline

In the example above, we run a bash script. You can run any command you like:  

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