Open OnDemand Wright
Open OnDemand provides easy, remote web access to supercomputers and computing clusters, without the need for a command-line interface. Instead of accessing the cluster via your terminal, Open OnDemand provides a user interface for accessing and modifying files and submitting jobs. No installation is required -- everything can be accessed within the browser.
Getting Started
To access Open OnDemand, login here with your standard cluster username and password.
After logging in, you should be redirected to your file system. You can navigate through your directories just as you would on your desktop. A nice feature of Open OnDemand is you can automatically upload and download files from your desktop to the cluster's file system; the secure file transfer is done automatically in a user-friendly manner.
Editing Files
To create a new file or directory, simply click "New File" or "New Directory" in the upper right hand corner of the screen.
To edit existing files, navigate to the file in the file system. Click on the dropdown three vertical dots to the right of the file's name. An options list will appear that includes a "View" mode and an "Edit" mode. Clicking view will allow you to view the contents of the file without manipulating them. Edit will redirect you to another tab where you can directly edit the contents of the file. Click the "Save" button on the lefthand side of the screen to save edits; when this button is grayed out, it means there are no additional changes to save.
Accessing the Cluster
To access the head node via the terminal, navigate to the "Clusters" drop down in the top left of the screen, and select "Wright Shell Access". The shell allows you to access your files within a terminal on the head compute node. Beneath the cluster selection, you can view the system status which tells you how many nodes, processors, and GPUs are currently available, as well as how many jobs are running and queued. This will help inform how long a job you've created might take to run on the system/when it will begin running.
Submitting and Tracking Jobs
Default Template
To submit or compose a job, navigate to the "Jobs" drop down in the top left of the screen, and select "Job Composer." This will take you to the job composer page, where you can select the "New Job" drop down. To start from the default template, just click "From Default Template" and in the right hand panel, scroll down to where the .sh script is shone and click "Open Editor" to edit the script itself. Once you are ready to submit the job, simply click the job in your list of potential jobs, and click submit. The job will show a status of "Queued," "Running," or "Completed" and you can view output files in the right hand panel once it has completed running.
#!/bin/bash
## Update each item as needed
## Job name
#SBATCH --job-name=your_job_name
## Standard Partitions
## statds, cmist, phil
## Condo (shared) Partitions
## statds_condo, cmist_condo, phil_condo
## The (all) partition will submit the job to the highest avalable node.
#SBATCH --partition=all
## Name of output file
#SBATCH --output=my_job_%j.out
## Name of error file
#SBATCH --error=my_job_%j.err
## Job length
#SBATCH --time=00:05:00
## Number of tasks
#SBATCH --ntasks 1
## Number of CPUs per task
#SBATCH --cpus-per-task 8
## Amount of memory
#SBATCH --mem 8GB
## Number of GPUS
#SBATCH --gres=gpu:1
bash simplejob.shSubmitting a Script from a Specified Path
You can also specify a path to a job you have already created. Click "From Specified Path" and enter the source path, i.e. the path to the directory containing your .sh file. Once you have done that, you can specify the name of the script under Script name, i.e. the name of the .sh file in the directory you've navigated to. You can then click "Run" just as you have with your other jobs.
