Nexus/MC2 - Revision history

Mbaney at 17:21, 2 December 2024

2024-12-02T17:21:59Z

← Older revision		Revision as of 17:21, 2 December 2024
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	* <code>nexusmc201.umiacs.umd.edu</code>		* <code>nexusmc201.umiacs.umd.edu</code>

	= ~~Resources~~ =		= Compute Nodes =
	The MC2 partition has nodes brought over from the previous standalone MC2 Slurm scheduler, which have since been combined with older nodes purchased by other labs/centers. The compute nodes are named <code>legacy##</code>.		The MC2 partition has nodes brought over from the previous standalone MC2 Slurm scheduler, which have since been combined with older nodes purchased by other labs/centers. The compute nodes are named <code>legacy##</code>.

Mbaney at 13:58, 26 November 2024

2024-11-26T13:58:20Z

← Older revision		Revision as of 13:58, 26 November 2024
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	= Resources =		= Resources =
	The MC2 partition has nodes brought over from the previous standalone MC2 Slurm scheduler. The compute nodes are named <code>~~twist~~##</code>.		The MC2 partition has nodes brought over from the previous standalone MC2 Slurm scheduler, which have since been combined with older nodes purchased by other labs/centers. The compute nodes are named <code>legacy##</code>.

	= QoS =		= QoS =
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	srun: job 218874 queued and waiting for resources		srun: job 218874 queued and waiting for resources
	srun: job 218874 has been allocated resources		srun: job 218874 has been allocated resources
	[username@~~twist00~~ ~]$ scontrol show job 218874		[username@legacy00 ~]$ scontrol show job 218874
	JobId=218874 JobName=bash		JobId=218874 JobName=bash
	UserId=username(1000) GroupId=username(21000) MCS_label=N/A		UserId=username(1000) GroupId=username(21000) MCS_label=N/A
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	Partition=mc2 AllocNode:Sid=nexusmc200:25443		Partition=mc2 AllocNode:Sid=nexusmc200:25443
	ReqNodeList=(null) ExcNodeList=(null)		ReqNodeList=(null) ExcNodeList=(null)
	NodeList=~~twist00~~		NodeList=legacy00
	BatchHost=~~twist00~~		BatchHost=legacy00
	NumNodes=1 NumCPUs=4 NumTasks=4 CPUs/Task=1 ReqB:S:C:T=0:0::		NumNodes=1 NumCPUs=4 NumTasks=4 CPUs/Task=1 ReqB:S:C:T=0:0::
	TRES=cpu=4,mem=8G,node=1,billing=2266		TRES=cpu=4,mem=8G,node=1,billing=2266

Mbaney at 17:44, 22 November 2024

2024-11-22T17:44:31Z

← Older revision		Revision as of 17:44, 22 November 2024
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	= Submission Nodes =		= Submission Nodes =
	You can [[SSH]] to <code>nexusmc2.umiacs.umd.edu</code> to log in to a submission ~~host~~.		You can [[SSH]] to <code>nexusmc2.umiacs.umd.edu</code> to log in to a submission node.

	If you store something in a local filesystem directory (/tmp, /scratch0) on one of the two submission ~~hosts~~, you will need to connect to that same submission ~~host~~ to access it later. The actual submission ~~hosts~~ are:		If you store something in a local filesystem directory (/tmp, /scratch0) on one of the two submission nodes, you will need to connect to that same submission node to access it later. The actual submission nodes are:
	* <code>nexusmc200.umiacs.umd.edu</code>		* <code>nexusmc200.umiacs.umd.edu</code>
	* <code>nexusmc201.umiacs.umd.edu</code>		* <code>nexusmc201.umiacs.umd.edu</code>

Mbaney at 22:12, 11 November 2024

2024-11-11T22:12:45Z

← Older revision		Revision as of 22:12, 11 November 2024
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	You can [[SSH]] to <code>nexusmc2.umiacs.umd.edu</code> to log in to a submission host.		You can [[SSH]] to <code>nexusmc2.umiacs.umd.edu</code> to log in to a submission host.

	If you store something in a local directory (/tmp, /scratch0) on one of the two submission hosts, you will need to connect to that same submission host to access it later. The actual submission hosts are:		If you store something in a local filesystem directory (/tmp, /scratch0) on one of the two submission hosts, you will need to connect to that same submission host to access it later. The actual submission hosts are:
	* <code>nexusmc200.umiacs.umd.edu</code>		* <code>nexusmc200.umiacs.umd.edu</code>
	* <code>nexusmc201.umiacs.umd.edu</code>		* <code>nexusmc201.umiacs.umd.edu</code>

Mbaney: /* QoS */

2024-09-26T13:26:46Z

QoS

← Older revision		Revision as of 13:26, 26 September 2024
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	= QoS =		= QoS =
	MC2 users have access to all of the [[Nexus#Quality_of_Service_.28QoS.29 \| standard job QoSes]] in the ~~<code>mc2</code>~~ partition using the <code>mc2</code> account.		MC2 users have access to all of the [[Nexus#Quality_of_Service_.28QoS.29 \| standard job QoSes]] in the MC2 partition using the <code>mc2</code> account.

	The additional jobs QoSes for the MC2 partition specifically are:		The additional jobs QoSes for the MC2 partition specifically are:

Mbaney at 16:40, 17 September 2024

2024-09-17T16:40:45Z

← Older revision		Revision as of 16:40, 17 September 2024
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	The ~~[[Nexus]] scheduler houses~~ [https://cyber.umd.edu/about MC2]'s ~~new computational partition~~. ~~Only MC2 lab members are able to run non~~-~~interruptible jobs~~ on ~~these~~ nodes.		The previous standalone cluster for [https://cyber.umd.edu/about MC2]'s compute nodes have folded into [[Nexus]] as of mid 2022.

			The Nexus cluster already has a large pool of compute resources made possible through college-level funding for UMIACS and CSD faculty. Details on common nodes already in the cluster (Tron partition) can be found [[Nexus/Tron \| here]].

			Please [[HelpDesk \| contact staff]] with any questions or concerns.

	= Submission Nodes =		= Submission Nodes =

Mbaney at 14:41, 13 August 2024

2024-08-13T14:41:59Z

← Older revision		Revision as of 14:41, 13 August 2024
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	* <code>huge-long</code>: Allows for longer jobs using higher overall resources.		* <code>huge-long</code>: Allows for longer jobs using higher overall resources.

	Please note that the partition has a <code>GrpTRES</code> limit of 100% of the available cores/RAM on the partition-specific nodes in aggregate plus 50% of the available cores/RAM on ~~<code>~~legacy##~~</code>~~ nodes in aggregate, so your job may need to wait if all available cores/RAM (or GPUs) are in use.		Please note that the partition has a <code>GrpTRES</code> limit of 100% of the available cores/RAM on the partition-specific nodes in aggregate plus 50% of the available cores/RAM on legacy## nodes in aggregate, so your job may need to wait if all available cores/RAM (or GPUs) are in use.

	= Jobs =		= Jobs =

Mbaney at 14:41, 13 August 2024

2024-08-13T14:41:16Z

← Older revision		Revision as of 14:41, 13 August 2024
Line 18:		Line 18:
	* <code>huge-long</code>: Allows for longer jobs using higher overall resources.		* <code>huge-long</code>: Allows for longer jobs using higher overall resources.

	Please note that the partition has a <code>GrpTRES</code> limit of 100% of the available cores/RAM on the partition-specific nodes in aggregate plus 50% of the available cores/RAM on legacy## nodes in aggregate, so your job may need to wait if all available cores/RAM (or GPUs) are in use.		Please note that the partition has a <code>GrpTRES</code> limit of 100% of the available cores/RAM on the partition-specific nodes in aggregate plus 50% of the available cores/RAM on <code>legacy##</code> nodes in aggregate, so your job may need to wait if all available cores/RAM (or GPUs) are in use.

	= Jobs =		= Jobs =

Mbaney at 14:41, 13 August 2024

2024-08-13T14:41:01Z

← Older revision		Revision as of 14:41, 13 August 2024
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	= Resources =		= Resources =
	The MC2 partition has nodes brought over from the previous standalone MC2 Slurm scheduler ~~as well as a few newer purchases~~. The compute nodes are named <code>twist##</code>.		The MC2 partition has nodes brought over from the previous standalone MC2 Slurm scheduler. The compute nodes are named <code>twist##</code>.

	= QoS =		= QoS =

Mbaney: /* Jobs */

2024-04-24T14:58:13Z

Jobs

← Older revision		Revision as of 14:58, 24 April 2024
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	= Jobs =		= Jobs =
	You will need to specify <code>--partition=mc2</code>, <code>--account=mc2~~</code>, and a specific <code>--qos~~</code> to be able to submit jobs to the MC2 partition.		You will need to specify <code>--partition=mc2</code> and <code>--account=mc2</code> to be able to submit jobs to the MC2 partition.

	<pre>		<pre>