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If we click save and go back to the Job Composer page, we should see our changes in the preview.

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Job Options

Now that our job will run, we still might need to make some changes to the job options that will work best for us. If we click the “Job Options” image-20240722-145116.png button on the left box we get presented with a new view:

  • We can rename the job to “Hello_world_Template” that makes more sense for us to find later

  • Leave cluster and job script fields as the default because that is the system we want and the file we just editied

  • We can add account here instead of in the script, but it’s just a good practice to have it in the script

image-20240722-145233.png

Alternatively No Table

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Job Submission

With all of the edits made, we can now submit the job to the cluster to run. The steps to do so are:

  1. Make sure the Job is selected in the left box

  2. Click the green “Submit” button image-20240722-153245.pngImage Added

If we refresh the page, we see in the left box that this simple job has been completed and a file for our output was created on the right box

image-20240722-153440.pngImage Addedimage-20240722-153459.pngImage Added

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In Conclusion

This module was a simple tutorial for using the Job Composer in Open OnDemand. This tool helps to send jobs to the MedicineBow cluster without the need for using a terminal. That said, the concepts for job submission with Slurm still apply to this tool and it is important to understand what each are doing, but most importantly:

  • ARCC’s required inputs

  • Other Slurm directives that are important to the success of the job

  • How to use Lmod to load software

  • Awareness of where the locations on the system where the script is created and output are placed

If used wisely, the Open OnDemand Job Composer can be an easy-to-use tool for creating jobs on MedicineBow and the other tutorials on Intro to Linux, Text Editors, Lmod, and Job Submission are extremely beneficial for the successful use of the tool.

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Finally The End

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