ClassAccounts - Revision history

Mbaney: /* Cluster Usage */

2026-01-13T20:07:32Z

Cluster Usage

← Older revision		Revision as of 20:07, 13 January 2026
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	==Cluster Usage==		==Cluster Usage==
	'''You ~~may~~ not run computational jobs on any submission node.''' You must [[SLURM/JobSubmission \| schedule your jobs with the SLURM workload manager]]. You can also find out more with the public documentation for the [https://slurm.schedmd.com/quickstart.html SLURM Workload Manager].		'''You must not run computational jobs on any submission node.''' You must [[SLURM/JobSubmission \| schedule your jobs with the SLURM workload manager]]. You can also find out more with the public documentation for the [https://slurm.schedmd.com/quickstart.html SLURM Workload Manager].

	Class accounts only have access to the following submission parameters in SLURM:		Class accounts only have access to the following submission parameters in SLURM:
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	* <code>--qos</code>: <code>default</code>, <code>medium</code>, and <code>high</code>		* <code>--qos</code>: <code>default</code>, <code>medium</code>, and <code>high</code>

	You must specify at least the partition parameter ~~manually~~ in any submission command you run. If you do not specify any QoS parameter, you will receive the QoS <code>default</code>.		You must specify at least the partition parameter in any submission command you run. If you do not specify any QoS parameter, you will receive the QoS <code>default</code>.

	You can view the resource limits for each QoS by running the command <code>show_qos</code>. The value in the MaxWall column is the maximum runtime you can run a single job for ~~each~~ QoS, and the ~~values~~ in the MaxTRES column ~~are~~ the maximum amount of CPU cores/GPUs/memory you can request for a single job ~~using each~~ QoS.		You can view the resource limits for each QoS by running the command <code>show_qos</code>. The value in the MaxWall column is the maximum runtime you can run a single job for with that QoS, and the value in the MaxTRES column is the maximum amount of CPU cores/GPUs/memory you can request for a single job with that QoS.

	Please note that you will be restricted to 32 total CPU cores, 4 total GPUs, and 256GB total RAM across all jobs you have running at once. This can be viewed with the command <code>show_partition_qos</code>.		Please note that you will be restricted to 32 total CPU cores, 4 total GPUs, and 256GB total RAM across all jobs you have running at once. This can be viewed with the command <code>show_partition_qos</code>.

	===Example===		===Example===
	Here is a basic example to schedule a interactive job running bash ~~with a single GPU~~ in the partition <code>class</code>, with the account <code>class</code>, running with the QoS of <code>default</code> and the default ~~CPU/memory allocation/~~time limit for the partition.		Here is a basic example to schedule a interactive job running bash, in the partition <code>class</code>, with the account <code>class</code>, running with the QoS of <code>default</code>, requesting four CPU cores, 2GB of memory, and one GPU of any type, with the default time limit for the partition.

	<pre>		<pre>
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	nexusclass00.umiacs.umd.edu		nexusclass00.umiacs.umd.edu

	$ srun --partition=class --account=class --qos=default --gres=gpu:1 --pty bash		$ srun --partition=class --account=class --qos=default --cpus-per-task=4 --mem=2gb --gres=gpu:1 --pty bash
	srun: Job time limit was unset; set to partition default of 60 minutes		srun: Job time limit was unset; set to partition default of 60 minutes
	srun: job 1333337 queued and waiting for resources		srun: job 1333337 queued and waiting for resources

Mbaney at 18:41, 15 December 2025

2025-12-15T18:41:44Z

← Older revision		Revision as of 18:41, 15 December 2025
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	==Cleaning up your account before the end of the semester==		==Cleaning up your account before the end of the semester==
	Class accounts for a given semester are liable to be archived and deleted after that semester's completion as early as the following:		Class accounts for a given semester are liable to be archived and deleted after that semester's completion as early as the following:
	* Winter semesters: ~~February 1st~~ of same year		* Winter semesters: January 31st of same year
	* Spring semesters: ~~June 1st~~ of same year		* Spring semesters: May 25th of same year
	* Summer semesters: ~~September 1st~~ of same year		* Summer semesters: August 15th of same year
	* Fall semesters: January 1st of next year		* Fall semesters: January 1st of next year

Mbaney at 14:58, 13 November 2025

2025-11-13T14:58:08Z

← Older revision		Revision as of 14:58, 13 November 2025
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	Class accounts only have access to the following submission parameters in SLURM:		Class accounts only have access to the following submission parameters in SLURM:
	* <code>--partition</code> - <code>class</code>		* <code>--partition</code>: <code>class</code>
	* <code>--account</code> - <code>class</code>		* <code>--account</code>: <code>class</code>
	* <code>--qos</code> - <code>default</code>, <code>medium</code>, and <code>high</code>		* <code>--qos</code>: <code>default</code>, <code>medium</code>, and <code>high</code>

	You must specify at least the partition parameter manually in any submission command you run. If you do not specify any QoS parameter, you will receive the QoS <code>default</code>.		You must specify at least the partition parameter manually in any submission command you run. If you do not specify any QoS parameter, you will receive the QoS <code>default</code>.

Mbaney at 14:42, 13 November 2025

2025-11-13T14:42:55Z

← Older revision		Revision as of 14:42, 13 November 2025
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	==Group Storage==		==Group Storage==
	You can also request group storage by '''having your TA or instructor [[HelpDesk \| contact staff]]''' to specify the usernames of the accounts that should be in the group. Only other class accounts in the same class can be added to the group. The quota ~~will~~ be 100GB ~~multiplied by~~ the number of accounts in the group and will be located at		You can also request group storage by '''having your TA or instructor [[HelpDesk \| contact staff]]''' to specify the usernames of the accounts that should be in the group. Only other class accounts in the same class can be added to the group. The quota can be up to (100GB * the number of accounts in the group) and will be located at
	<pre>		<pre>
	/fs/class-projects/<semester><year>/<coursecode>/<groupname>		/fs/class-projects/<semester><year>/<coursecode>/<groupname>

Mbaney: /* Example */

2025-11-06T21:04:48Z

Example

← Older revision		Revision as of 21:04, 6 November 2025
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	$ hostname		$ hostname
	~~tron14~~.umiacs.umd.edu		tron06.umiacs.umd.edu

	$ nvidia-smi -L		$ nvidia-smi -L

Mbaney: /* Available Nodes */

2025-11-06T21:04:01Z

Available Nodes

← Older revision		Revision as of 21:04, 6 November 2025
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	ActiveFeatures=rhel8,x86_64,Zen,EPYC-7302P,Ampere		ActiveFeatures=rhel8,x86_64,Zen,EPYC-7302P,Ampere
	Gres=gpu:rtxa4000:4		Gres=gpu:rtxa4000:4
	NodeAddr=~~tron15~~ NodeHostName=~~tron15~~ Version=24.11.6		NodeAddr=tron06 NodeHostName=tron06 Version=24.11.6
	OS=Linux 4.18.0-553.80.1.el8_10.x86_64 #1 SMP Fri Oct 10 03:51:59 EDT 2025		OS=Linux 4.18.0-553.80.1.el8_10.x86_64 #1 SMP Fri Oct 10 03:51:59 EDT 2025
	RealMemory=126214 AllocMem=0 FreeMem=119060 Sockets=1 Boards=1		RealMemory=126214 AllocMem=0 FreeMem=119060 Sockets=1 Boards=1

Mbaney: /* Available Nodes */

2025-11-06T21:03:45Z

Available Nodes

← Older revision		Revision as of 21:03, 6 November 2025
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	ActiveFeatures=rhel8,x86_64,Zen,EPYC-7302P,Ampere		ActiveFeatures=rhel8,x86_64,Zen,EPYC-7302P,Ampere
	Gres=gpu:rtxa4000:4		Gres=gpu:rtxa4000:4
	NodeAddr=~~tron06~~ NodeHostName=~~tron06~~ Version=23.02.6		NodeAddr=tron15 NodeHostName=tron15 Version=24.11.6
	OS=Linux 4.18.0-~~513~~.11.1.~~el8_9~~.x86_64 #1 SMP ~~Thu Dec 7~~ 03:06:~~13 EST 2023~~		OS=Linux 4.18.0-553.80.1.el8_10.x86_64 #1 SMP Fri Oct 10 03:51:59 EDT 2025
	RealMemory=126214 AllocMem=0 FreeMem=119060 Sockets=1 Boards=1		RealMemory=126214 AllocMem=0 FreeMem=119060 Sockets=1 Boards=1
	State=IDLE ThreadsPerCore=1 TmpDisk=0 Weight=340 Owner=N/A MCS_label=N/A		State=IDLE ThreadsPerCore=1 TmpDisk=0 Weight=340 Owner=N/A MCS_label=N/A
	Partitions=class,scavenger,tron		Partitions=class,scavenger,tron
	BootTime=~~2024~~-01-~~29T09~~:35:12 SlurmdStartTime=~~2024~~-02-~~05T15~~:14:20		BootTime=2025-10-23T18:38:53 SlurmdStartTime=2025-10-31T14:07:48
	LastBusyTime=~~2024~~-02-~~16T15~~:59:38 ResumeAfterTime=None		LastBusyTime=2025-11-06T15:32:11 ResumeAfterTime=None
	CfgTRES=cpu=16,mem=126214M,billing=~~638~~,gres/gpu=4,gres/gpu:rtxa4000=4		CfgTRES=cpu=16,mem=126214M,billing=610,gres/gpu=4,gres/gpu:rtxa4000=4
	AllocTRES=		AllocTRES=
	CurrentWatts=0 AveWatts=0		CurrentWatts=0 AveWatts=0
	</pre>		</pre>

Mbaney: /* Available Nodes */

2025-11-06T21:03:15Z

Available Nodes

← Older revision		Revision as of 21:03, 6 November 2025
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	NodeAddr=tron06 NodeHostName=tron06 Version=23.02.6		NodeAddr=tron06 NodeHostName=tron06 Version=23.02.6
	OS=Linux 4.18.0-513.11.1.el8_9.x86_64 #1 SMP Thu Dec 7 03:06:13 EST 2023		OS=Linux 4.18.0-513.11.1.el8_9.x86_64 #1 SMP Thu Dec 7 03:06:13 EST 2023
	RealMemory=126214 AllocMem=0 FreeMem=~~107174~~ Sockets=1 Boards=1		RealMemory=126214 AllocMem=0 FreeMem=119060 Sockets=1 Boards=1
	State=IDLE ThreadsPerCore=1 TmpDisk=0 Weight=340 Owner=N/A MCS_label=N/A		State=IDLE ThreadsPerCore=1 TmpDisk=0 Weight=340 Owner=N/A MCS_label=N/A
	Partitions=class,scavenger,tron		Partitions=class,scavenger,tron

Mbaney: /* Group Storage */

2025-11-06T20:57:06Z

Group Storage

← Older revision		Revision as of 20:57, 6 November 2025
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	where <code><groupname></code> is composed of:		where <code><groupname></code> is composed of:
	* the abbreviated course code ~~as used in the username~~ e.g., "c999z"		* the abbreviated course code e.g., "c999z"
	* the character "g"		* the character "g"
	* the number of the group (starting at 0 for the first group for the class requested to us) prepended with 0s to make the total group name 8 characters long		* the number of the group (starting at 0 for the first group for the class requested to us) prepended with 0s to make the total group name 8 characters long

Mbaney: /* Personal Storage */

2025-11-06T20:56:38Z

Personal Storage

← Older revision		Revision as of 20:56, 6 November 2025
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	</pre>		</pre>

	where <code><semester></code> is either "spring", "summer", "fall", or "winter", <code><year></code> is the current year e.g., "2025", <coursecode> is the class' course code as listed in UMD's [https://app.testudo.umd.edu/soc/ Schedule of Classes] in all lowercase e.g., "cmsc999z", and <code><username></code> is ~~the~~ username.		where <code><semester></code> is either "spring", "summer", "fall", or "winter", <code><year></code> is the current year e.g., "2025", <coursecode> is the class' course code as listed in UMD's [https://app.testudo.umd.edu/soc/ Schedule of Classes] in all lowercase e.g., "cmsc999z", and <code><username></code> is your username.

	==Group Storage==		==Group Storage==