Open OnDemand Wright - Revision history

Ajshen at 03:24, 29 June 2026

2026-06-29T03:24:20Z

← Older revision		Revision as of 03:24, 29 June 2026
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			[[Category:Wright Cluster]]
			[[Category:Remote Server Access]]

	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.		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.

Jacobg2: /* Getting Started */

2025-11-21T14:35:57Z

Getting Started

← Older revision		Revision as of 14:35, 21 November 2025
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	Open OnDemand provides easy, remote web access to supercomputers and computing clusters, without the need for a command-line interface. Instead of accessing the ~~hydra and ghidorah clusters~~ 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.		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 ===		=== Getting Started ===
	To access Open OnDemand, login [https://~~ood~~.~~stat~~.cmu.edu/~~dex/auth/ldap/login?back=&state=iqxvp3cbpitdiomazu5eih4nc~~ here] with your ~~StatDS username and password. This is the same~~ username and password ~~you would use to access the clusters via ssh on your terminal~~.		To access Open OnDemand, login [https://wright.hss.cmu.edu/ 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 ~~department~~'s file system; the secure file transfer is done automatically in a user-friendly manner.		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 ===		=== Editing Files ===
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	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.		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 ~~Clusters~~ ===		=== 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 "~~Statistics and Data Science~~ Shell Access." The shell allows you to access your files within a terminal on the head compute node~~. Do not run jobs within this terminal~~. 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.		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 ===		=== Submitting and Tracking Jobs ===

	==== Default Template ====		==== 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.		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.<syntaxhighlight lang="bash">
			#!/bin/bash

	~~==== Hydras and Ghidorah Templates ====~~		## Update each item as needed
	If you click "From Template," you can choose to submit a job on the hydras or ghidorahs. Simply pick the template you want to use -- either Hydra Job for the hydras or Ghidorah Job for the ghidorahs -- and click "Create New Job." You can then modify the submit.sh script as before to select ''which'' hydra or ghidorah you want to use as follows:<syntaxhighlight lang="bash">
	#~~!/bin/sh~~
	#~~SBATCH --partition Ghidorahs~~

	# #~~Select a specific Hydra node to run job on.~~		## Job name
	# ~~#Un~~-~~comment the line below and replace ghidorahXX with the appropriate ghidorah server ~ ghidorah1-3.~~		#SBATCH --job-name=your_job_name
	~~# #SBATCH~~ --~~nodelist~~=~~ghidorahx~~

	# #~~Output file for script~~.		## Standard Partitions
	#SBATCH --~~output~~=~~%j_output.txt~~		## 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

	# #~~Error~~ file ~~for script.~~		## Name of output file
	#SBATCH --~~error~~=%~~j_error~~.~~txt~~		#SBATCH --output=my_job_%j.out

	~~python3 examplepython.py~~		## Name of error file
	~~</syntaxhighlight>The <code>~~#SBATCH --~~nodelist~~=~~ghidorah1</code> selects the 1st ghidorah to run the python script on~~. ~~Change this to <code>~~#SBATCH --~~nodelist~~=~~hydra1</code> for the hydras and change the first~~ SBATCH ~~line to Hydras (<code>~~#SBATCH --~~partition Hydras~~</~~code~~>).		#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.sh
			</syntaxhighlight>

	==== Submitting a Script from a Specified Path ====		==== Submitting 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.		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.

Jacobg2 at 14:31, 21 November 2025

2025-11-21T14:31:42Z

← Older revision		Revision as of 14:31, 21 November 2025
Line 1:		Line 1:
	Go		Open OnDemand provides easy, remote web access to supercomputers and computing clusters, without the need for a command-line interface. Instead of accessing the hydra and ghidorah clusters 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 [https://ood.stat.cmu.edu/dex/auth/ldap/login?back=&state=iqxvp3cbpitdiomazu5eih4nc here] with your StatDS username and password. This is the same username and password you would use to access the clusters via ssh on your terminal.

			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 department'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 Clusters ===
			To access the head node via the terminal, navigate to the "Clusters" drop down in the top left of the screen, and select "Statistics and Data Science Shell Access." The shell allows you to access your files within a terminal on the head compute node. Do not run jobs within this terminal. 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.

			==== Hydras and Ghidorah Templates ====
			If you click "From Template," you can choose to submit a job on the hydras or ghidorahs. Simply pick the template you want to use -- either Hydra Job for the hydras or Ghidorah Job for the ghidorahs -- and click "Create New Job." You can then modify the submit.sh script as before to select ''which'' hydra or ghidorah you want to use as follows:<syntaxhighlight lang="bash">
			#!/bin/sh
			#SBATCH --partition Ghidorahs

			# #Select a specific Hydra node to run job on.
			# #Un-comment the line below and replace ghidorahXX with the appropriate ghidorah server ~ ghidorah1-3.
			# #SBATCH --nodelist=ghidorahx

			# #Output file for script.
			#SBATCH --output=%j_output.txt

			# #Error file for script.
			#SBATCH --error=%j_error.txt

			python3 examplepython.py
			</syntaxhighlight>The <code>#SBATCH --nodelist=ghidorah1</code> selects the 1st ghidorah to run the python script on. Change this to <code>#SBATCH --nodelist=hydra1</code> for the hydras and change the first SBATCH line to Hydras (<code>#SBATCH --partition Hydras</code>).

			==== Submitting 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.

Jacobg2: Created page with "Go"

2025-11-21T14:31:20Z

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