SLURM/JobSubmission - Revision history

Mbaney: /* scancel */

2026-03-19T17:47:56Z

scancel

← Older revision		Revision as of 17:47, 19 March 2026
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	*<code>scancel 255</code> ''cancel job 255''		*<code>scancel 255</code> ''cancel job 255''
	*<code>scancel 255.3</code> ''cancel job step 3 of job 255''		*<code>scancel 255.3</code> ''cancel job step 3 of job 255''
	*<code>scancel --user=username --partition=tron</code> ''cancel all jobs for username in the tron partition, username must be your ~~username~~''		*<code>scancel --user=username --partition=tron</code> ''cancel all jobs for username in the tron partition; username must be your UMD directory ID''

	=Identifying Resources and Features=		=Identifying Resources and Features=

Mbaney at 17:47, 19 March 2026

2026-03-19T17:47:38Z

← Older revision		Revision as of 17:47, 19 March 2026
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	* [[SLURM/ArrayJobs]]		* [[SLURM/ArrayJobs]]

	===scancel===		==scancel==
	The <code>scancel</code> command can be used to cancel job allocations or job steps that are no longer needed. It can be passed individual job IDs or an option to delete all of your jobs or jobs that meet certain criteria.		The <code>scancel</code> command can be used to cancel your own job allocations or job steps that are no longer needed. It can be passed individual job IDs or an option to delete all of your jobs or jobs that meet certain criteria.
	*<code>scancel 255</code> ''cancel job 255''		*<code>scancel 255</code> ''cancel job 255''
	*<code>scancel 255.3</code> ''cancel job step 3 of job 255''		*<code>scancel 255.3</code> ''cancel job step 3 of job 255''
	*<code>scancel --user username --partition=tron</code> ''cancel all jobs for username in the tron partition''		*<code>scancel --user=username --partition=tron</code> ''cancel all jobs for username in the tron partition, username must be your username''

	=Identifying Resources and Features=		=Identifying Resources and Features=

Mbaney: /* show_available_nodes */

2025-11-11T17:39:58Z

show_available_nodes

← Older revision		Revision as of 17:39, 11 November 2025
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	===Footnotes===		===Footnotes===
	[0] - As of now, this command alias does not factor in resources occupied by jobs that could be preempted (based on the partition(s) passed to it, if present). This is ~~soon to come~~.		[0] - As of now, this command alias does not factor in resources occupied by jobs that could be preempted (based on the partition(s) passed to it, if present). This is something that we are working on implementing.

	[1] - This command alias also does not factor in jobs with higher priority values requesting more resources, in the same partition(s), blocking execution of a job submitted with the resources / other arguments checked by the command alias. This is due to the infeasibility of calculating a job's priority value before it is actually submitted.		[1] - This command alias also does not factor in jobs with higher priority values requesting more resources, in the same partition(s), blocking execution of a job submitted with the resources / other arguments checked by the command alias. This is due to the infeasibility of calculating a job's priority value before it is actually submitted.

Mbaney: /* Common srun Arguments */

2025-10-20T17:01:40Z

Common srun Arguments

← Older revision		Revision as of 17:01, 20 October 2025
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	* <code>--mem=1g</code> ''Requests 1GB of memory for your job, if no unit is given MB is assumed''		* <code>--mem=1g</code> ''Requests 1GB of memory for your job, if no unit is given MB is assumed''
	* <code>--ntasks=2</code> ''Requests 2 "tasks" which map to cores on a CPU for your job; if passed to srun, runs the given command concurrently on each core''		* <code>--ntasks=2</code> ''Requests 2 "tasks" which map to cores on a CPU for your job; if passed to srun, runs the given command concurrently on each core''
			* <code>--cpus-per-task=2</code> ''Requests 2 CPU cores be allocated per task for your job''
	* <code>--nodes=2</code> ''Requests 2 nodes be allocated to your job; if passed to srun, runs the given command concurrently on each node''		* <code>--nodes=2</code> ''Requests 2 nodes be allocated to your job; if passed to srun, runs the given command concurrently on each node''
	* <code>--nodelist=<NODENAME></code> ''Requests to run your job on the <NODENAME> node''		* <code>--nodelist=<NODENAME></code> ''Requests to run your job on the <NODENAME> node''

Mbaney: /* Examples */

2025-05-12T13:46:04Z

Examples

← Older revision		Revision as of 13:46, 12 May 2025
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	</pre>		</pre>

	Show nodes with [https://~~www~~.~~nvidia~~.~~com/en-us~~/~~geforce~~/~~turing~~ Turing] or [https://~~www~~.~~nvidia~~.~~com/en-us~~/~~data-center~~/~~ampere-architecture~~ Ampere] architecture GPUs available in the <tt>scavenger</tt> partition:		Show nodes with [https://en.wikipedia.org/wiki/Turing_(microarchitecture) Turing] or [https://en.wikipedia.org/wiki/Ampere_(microarchitecture) Ampere] architecture GPUs available in the <tt>scavenger</tt> partition:
	<pre>		<pre>
	$ show_available_nodes --partition=scavenger --or-feature=Ampere,Turing		$ show_available_nodes --partition=scavenger --or-feature=Ampere,Turing

Mbaney at 13:45, 12 May 2025

2025-05-12T13:45:28Z

← Older revision		Revision as of 13:45, 12 May 2025
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	</pre>		</pre>

	Show nodes with [https://~~www~~.~~amd~~.~~com/en~~/~~technologies~~/~~zen-core~~ Zen] architecture CPUs and [https://~~www~~.~~nvidia~~.~~com~~/~~en-us~~/~~data-center/ampere-architecture~~ Ampere] architecture GPUs available in the <tt>scavenger</tt> partition:		Show nodes with [https://en.wikipedia.org/wiki/Zen_(microarchitecture) Zen] architecture CPUs and [https://en.wikipedia.org/wiki/Ampere_(microarchitecture) Ampere] architecture GPUs available in the <tt>scavenger</tt> partition:
	<pre>		<pre>
	$ show_available_nodes --partition=scavenger --and-feature=Zen,Ampere		$ show_available_nodes --partition=scavenger --and-feature=Zen,Ampere

Mbaney: /* show_available_nodes */

2024-12-05T20:46:23Z

show_available_nodes

← Older revision		Revision as of 20:46, 5 December 2024
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	[0] - As of now, this command alias does not factor in resources occupied by jobs that could be preempted (based on the partition(s) passed to it, if present). This is soon to come.		[0] - As of now, this command alias does not factor in resources occupied by jobs that could be preempted (based on the partition(s) passed to it, if present). This is soon to come.

	[1] - This command alias also does not factor in jobs with higher priority values requesting more resources, in the same partition(s), blocking execution of a job submitted with the arguments checked by the command alias. This is due to the ~~complexity~~ of calculating a job's priority value before it is actually submitted.		[1] - This command alias also does not factor in jobs with higher priority values requesting more resources, in the same partition(s), blocking execution of a job submitted with the resources / other arguments checked by the command alias. This is due to the infeasibility of calculating a job's priority value before it is actually submitted.

	===Examples===		===Examples===

Mbaney at 20:50, 26 November 2024

2024-11-26T20:50:45Z

Show changes

Mbaney: /* Advanced Batch Scripts */

2024-11-26T15:09:32Z

Advanced Batch Scripts

← Older revision		Revision as of 15:09, 26 November 2024
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	# Lines that begin with #SBATCH specify commands to be used by SLURM for scheduling. These MUST be above any non-#SBATCH lines in the script to take effect.		# Lines that begin with #SBATCH specify commands to be used by SLURM for scheduling. These MUST be above any non-#SBATCH lines in the script to take effect.

	#SBATCH --job-name=helloWorld # ~~sets the~~ job name		#SBATCH --job-name=helloWorld # set job name
	#SBATCH --output=helloWorld.out.%j # indicates a file to redirect STDOUT to; %j is the jobid. If set, must be set to a file instead of a directory or else submission will fail.		#SBATCH --output=helloWorld.out.%j # indicates a file to redirect STDOUT to; %j is the jobid. If set, must be set to a file instead of a directory or else submission will fail.
	#SBATCH --error=helloWorld.err.%j # indicates a file to redirect STDERR to; %j is the jobid. If set, must be set to a file instead of a directory or else submission will fail.		#SBATCH --error=helloWorld.err.%j # indicates a file to redirect STDERR to; %j is the jobid. If set, must be set to a file instead of a directory or else submission will fail.
	#SBATCH --time=00:05:00 # how long you would like your job to run; format=dd-hh:mm:ss		#SBATCH --time=00:05:00 # how long you would like your job to run; format=dd-hh:mm:ss
	#SBATCH --qos=default # set QOS, this ~~will determine what~~ resources can be requested		#SBATCH --account=nexus # set account, this determines which partitions and QOSes are available for your job
			#SBATCH --partition=tron # set partition, this determines what nodes are available for your job
			#SBATCH --qos=default # set QOS, this determines how many resources can be requested within your job, and for how long
	#SBATCH --nodes=2 # number of nodes to allocate for your job		#SBATCH --nodes=2 # number of nodes to allocate for your job
	#SBATCH --ntasks=4 # request 4 cpu cores be reserved for your ~~node~~ total		#SBATCH --ntasks=4 # request 4 cpu cores be reserved for your job total
	#SBATCH --ntasks-per-node=2 # request 2 cpu cores be reserved per node		#SBATCH --ntasks-per-node=2 # request 2 cpu cores be reserved per node
	#SBATCH --mem=1g # memory required by job; if unit is not specified MB will be assumed. for multi-node jobs, this argument allocates this much memory per node		#SBATCH --mem=1g # memory required by job; if unit is not specified MB will be assumed. for multi-node jobs, this argument allocates this much memory per node

Mbaney: /* Advanced Batch Scripts */

2024-11-26T15:05:21Z

Advanced Batch Scripts

← Older revision		Revision as of 15:05, 26 November 2024
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	#SBATCH --job-name=helloWorld # sets the job name		#SBATCH --job-name=helloWorld # sets the job name
	#SBATCH --output=helloWorld.out.%j # indicates a file to redirect STDOUT to; %j is the jobid. If set, must be set to a file instead of a directory or else submission will fail.		#SBATCH --output=helloWorld.out.%j # indicates a file to redirect STDOUT to; %j is the jobid. If set, must be set to a file instead of a directory or else submission will fail.
	#SBATCH --error=helloWorld.~~out~~.%j # indicates a file to redirect STDERR to; %j is the jobid. If set, must be set to a file instead of a directory or else submission will fail.		#SBATCH --error=helloWorld.err.%j # indicates a file to redirect STDERR to; %j is the jobid. If set, must be set to a file instead of a directory or else submission will fail.
	#SBATCH --time=00:05:00 # how long you would like your job to run; format=dd-hh:mm:ss		#SBATCH --time=00:05:00 # how long you would like your job to run; format=dd-hh:mm:ss
	#SBATCH --qos=default # set QOS, this will determine what resources can be requested		#SBATCH --qos=default # set QOS, this will determine what resources can be requested