MNXB01
Homework - tutorial 4
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2020 HT/Autumn
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Homework - tutorial 4

  • Due 2 Oct 2020 by 23:59
  • Points 5
  • Submitting a text entry box, a media recording, or a file upload

Prepare and execute a simple workflow on the iridium cluster:

 

1) Prepare the workflow (on iridium): The workflow should consists of a series linux commands in the form of a bash script. The purpose of the workflow is to gather various information about the computer.  As a minimal information, the workflow should obtain the hostname of the machine, the "uptime" information, disk space usage and the number of entries in the /etc and /usr/bin directories. Also add a few minutes ”sleep”. Save the workflow as SLURM job descripton script (e.g. homework4.sh), execute it on the  login or "frontend" machine and save the output to a file (e.g. hw4-script-frontend-output).

2) Execute the same workflow on the cluster worker nodes using the SLURM system:  Start with a fresh login to iridium then  record your session on iridium using the logging feature of screen: start up a screen session with logging enabled (screen –L), create a slurm submission script based on the homework4.sh script (call the slurm script as homework4-slurm.sh) and submit several jobs with sbatch, list the queue status, list the job status, cancel some of the jobs, play with the slurm commands, then exit screen

3) Place all homework files into a dedicated CLEAN directory within your home area on iridium (e.g. HW4-final). The directory should contain the workflow script, the slurm submission script, the execution output from the frontend run,  the screenlog.0 file and some of the SLURM session logs.

4) Once everything is done and the dedicated HW4 directory is available on the iridium cluster, send me the full path of that directory.

 

Submission and communications via Canvas only.

1601675999 10/02/2020 11:59pm
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cluster_exercises.tar MNXB01-tutorial-5.pdf