Nexus/CML - Revision history

Mbaney: /* QoS */

2025-11-13T15:51:14Z

QoS

← Older revision		Revision as of 15:51, 13 November 2025
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	If your faculty member's Slurm account does not have one or both of the <code>cml-high_long</code> or <code>cml-very_high</code> QoS available to it, we can add it to their account provided they approve. Please [[HelpDesk \| contact staff]] if this is desired.		If your faculty member's Slurm account does not have one or both of the <code>cml-high_long</code> or <code>cml-very_high</code> QoS available to it, we can add it to their account provided they approve. Please [[HelpDesk \| contact staff]] if this is desired.

	The important part here is that in different QoS you can have a shorter/longer maximum wall time, a different total number of jobs running at once, and a different maximum number of track-able resources (TRES) for the job. In the cml-scavenger QoS, one more constraint that you are restricted by is the total number of TRES per user (over multiple jobs).		The important part here is that in different QoS you can have a shorter/longer maximum wall time, a different total number of jobs running at once, and a different maximum number of track-able resources (TRES) for the job. In the cml-scavenger QoS, one more constraint that you are restricted by is the total number of TRES per user (over multiple jobs).

	<pre>		<pre>

Mbaney at 20:03, 9 October 2025

2025-10-09T20:03:32Z

← Older revision		Revision as of 20:03, 9 October 2025
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	# One pair of network switches connected to each other via dual 100GbE links for redundancy, serving the following compute nodes:		# One pair of network switches connected to each other via dual 100GbE links for redundancy, serving the following compute nodes:
	#* cml[17-28,30-32,34]: Two 100GbE links per node, one to each switch in the pair (redundancy).		#* cml[17-28,30-32,34]: Two 100GbE links per node, one to each switch in the pair (redundancy).
			#* cml35: Four 100GbE links, two to each switch in the pair (redundancy and increased bandwidth).
	# One pair of network switches connected to the above pair of network switches via two 100GbE links, one between the first two switches in each pair and one between the second two switches in each pair for redundancy, and to each other via dual 25GbE links for redundancy.		# One pair of network switches connected to the above pair of network switches via two 100GbE links, one between the first two switches in each pair and one between the second two switches in each pair for redundancy, and to each other via dual 25GbE links for redundancy.
	#* cml[00,02-09]: Two 25GbE links per node, one to each switch in the pair (redundancy).		#* cml[00,02-09]: Two 25GbE links per node, one to each switch in the pair (redundancy).

Mbaney at 21:11, 18 September 2025

2025-09-18T21:11:46Z

← Older revision		Revision as of 21:11, 18 September 2025
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	* '''cml-furongh''' - This partition is for exclusive priority access to Dr. Furong Huang's purchased nodes. Job allocations are guaranteed.		* '''cml-furongh''' - This partition is for exclusive priority access to Dr. Furong Huang's purchased nodes. Job allocations are guaranteed.
	* '''cml-sfeizi''' - This partition is for exclusive priority access to Dr. Soheil Feizi's purchased nodes. Job allocations are guaranteed.		* '''cml-sfeizi''' - This partition is for exclusive priority access to Dr. Soheil Feizi's purchased nodes. Job allocations are guaranteed.
	* '''cml-zhou''' - This partition is for priority access to Dr. Tianyi Zhou's purchased nodes. Job allocations are guaranteed.
	** '''This partition is being permanently removed on Thursday, September 18th, 2025, at 5pm. Please switch to using the cml-director partition if you have access.'''

	There is also one additional partition available to user accounts named by CML's director.		There is also one additional partition available to user accounts named by CML's director.

	* '''cml-director''' - This partition is for priority access to designated CML-purchased nodes. Job allocations are guaranteed.		* '''cml-director''' - This partition is for exclusive priority access to designated CML-purchased nodes. Job allocations are guaranteed.

	==Accounts==		==Accounts==
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	* cml-tokekar		* cml-tokekar
	* cml-tomg		* cml-tomg
	* cml-zhou

	<pre>		<pre>
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	cml-tokekar cml - pratap tokekar cml		cml-tokekar cml - pratap tokekar cml
	cml-tomg cml - tom goldstein cml		cml-tomg cml - tom goldstein cml
	~~cml-zhou cml - tianyi zhou cml~~
	... ... ...		... ... ...
	</pre>		</pre>
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	cml-sfeizi 500		cml-sfeizi 500
	cml-wriva 500		cml-wriva 500
	~~cml-zhou 500~~
	...		...
	</pre>		</pre>

Mbaney: /* QoS */

2025-09-15T18:32:30Z

QoS

← Older revision		Revision as of 18:32, 15 September 2025
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	cml-furongh 500		cml-furongh 500
	cml-scavenger 500 gres/gpu=24		cml-scavenger 500 gres/gpu=24
			cml-sfeizi 500
	cml-wriva 500		cml-wriva 500
	cml-zhou 500		cml-zhou 500

Mbaney: /* QoS */

2025-09-15T18:32:11Z

QoS

← Older revision		Revision as of 18:32, 15 September 2025
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	cml-furongh 500		cml-furongh 500
	cml-scavenger 500 gres/gpu=24		cml-scavenger 500 gres/gpu=24
			cml-wriva 500
	cml-zhou 500		cml-zhou 500
	...		...

Mbaney: /* QoS */

2025-09-15T18:31:42Z

QoS

← Older revision		Revision as of 18:31, 15 September 2025
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	cml-furongh 500		cml-furongh 500
	cml-scavenger 500 gres/gpu=24		cml-scavenger 500 gres/gpu=24
	~~cml-wriva 500~~
	cml-zhou 500		cml-zhou 500
	...		...

Mbaney: /* Accounts */

2025-09-15T18:31:17Z

Accounts

← Older revision		Revision as of 18:31, 15 September 2025
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	</pre>		</pre>

	Faculty can manage ~~this~~ list of users via our [https://intranet.umiacs.umd.edu/directory/secgroup/ Directory application] in the Security Groups section. The security group that controls access has the prefix <code>cml_</code> ~~and then the faculty username~~. It will also list <code>slurm://nexusctl.umiacs.umd.edu</code> as the associated URI.		Faculty can manage the list of users that have access to their Slurm account via our [https://intranet.umiacs.umd.edu/directory/secgroup Directory application] in the Security Groups section. The security group that controls access has the prefix <code>cml_</code> prepended to their UMD directory ID. It will also list <code>slurm://nexusctl.umiacs.umd.edu</code> as the associated URI.

	You can check your account associations by running the '''show_assoc''' command ~~to see the accounts you are associated with~~. Please [[HelpDesk \| contact staff]] and include your faculty member in the conversation if you do not see the appropriate association.		You can check your account associations by running the '''show_assoc''' command. Please [[HelpDesk \| contact staff]] and include your faculty member in the conversation if you do not see the appropriate association(s).

	<pre>		<pre>

Mbaney: /* Partitions */

2025-09-15T18:15:10Z

Partitions

← Older revision		Revision as of 18:15, 15 September 2025
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	* '''cml-sfeizi''' - This partition is for exclusive priority access to Dr. Soheil Feizi's purchased nodes. Job allocations are guaranteed.		* '''cml-sfeizi''' - This partition is for exclusive priority access to Dr. Soheil Feizi's purchased nodes. Job allocations are guaranteed.
	* '''cml-zhou''' - This partition is for priority access to Dr. Tianyi Zhou's purchased nodes. Job allocations are guaranteed.		* '''cml-zhou''' - This partition is for priority access to Dr. Tianyi Zhou's purchased nodes. Job allocations are guaranteed.
			** '''This partition is being permanently removed on Thursday, September 18th, 2025, at 5pm. Please switch to using the cml-director partition if you have access.'''

	There is also one additional partition available to user accounts named by CML's director.		There is also one additional partition available to user accounts named by CML's director.

Mbaney: /* Network */

2025-09-15T13:42:56Z

Network

← Older revision		Revision as of 13:42, 15 September 2025
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	#* cml[17-28,30-32,34]: Two 100GbE links per node, one to each switch in the pair (redundancy).		#* cml[17-28,30-32,34]: Two 100GbE links per node, one to each switch in the pair (redundancy).
	# One pair of network switches connected to the above pair of network switches via two 100GbE links, one between the first two switches in each pair and one between the second two switches in each pair for redundancy, and to each other via dual 25GbE links for redundancy.		# One pair of network switches connected to the above pair of network switches via two 100GbE links, one between the first two switches in each pair and one between the second two switches in each pair for redundancy, and to each other via dual 25GbE links for redundancy.
	#* cml[00-09]: Two 25GbE links per node, one to each switch in the pair (redundancy).		#* cml[00,02-09]: Two 25GbE links per node, one to each switch in the pair (redundancy).
	#* cml[10-16],cmlcpu[00-04,06-07]: Two 10GbE links per node, one to each switch in the pair (redundancy).		#* cml[10-16],cmlcpu[00-04,06-07]: Two 10GbE links per node, one to each switch in the pair (redundancy).

Mbaney: /* Partitions */

2025-09-15T13:40:54Z

Partitions

← Older revision		Revision as of 13:40, 15 September 2025
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	There is also one additional partition available to user accounts named by CML's director.		There is also one additional partition available to user accounts named by CML's director.

	* '''cml-~~zhou~~''' - This partition is for priority access to designated CML-purchased nodes. Job allocations are guaranteed.		* '''cml-director''' - This partition is for priority access to designated CML-purchased nodes. Job allocations are guaranteed.

	==Accounts==		==Accounts==