Applications/MIKE - Revision history

Pysdlb: /* Next Steps */

2022-11-16T11:21:31Z

‎Next Steps

Pysdlb: /* Navigation */

2022-11-16T11:21:19Z

‎Navigation

Pysdlb at 11:44, 15 November 2022

2022-11-15T11:44:42Z

Pysdlb at 13:19, 13 October 2022

2022-10-13T13:19:33Z

Pysdlb at 13:18, 24 May 2019

2019-05-24T13:18:23Z

Chris.collins: /* Scaling Tests */

2019-05-10T11:10:54Z

‎Scaling Tests

Chris.collins: /* Scaling Tests */

2019-05-10T11:10:29Z

‎Scaling Tests

Chris.collins: /* Batch Session */

2019-05-10T10:37:53Z

‎Batch Session

Chris.collins at 10:37, 10 May 2019

2019-05-10T10:37:40Z

Chris.collins: Created page with "TOC ==Application Details== * Description: MIKE * Version: 2017 * Modules: Private module available on request to appropriate license holders * Licence: Limited license..."

2019-05-10T10:37:01Z

Created page with "__TOC__ ==Application Details== * Description: MIKE * Version: 2017 * Modules: Private module available on request to appropriate license holders * Licence: Limited license..."

@@ Line 78: / Line 78: @@
 | 49:14
 |}
 {{Licensepagenav}}

← Older revision		Revision as of 11:21, 16 November 2022
Line 81:		Line 81:
	==Next Steps==		==Next Steps==

−	~~==Navigation==~~	+	{{Licensepagenav}}
−
−	* [[Main_Page\|Home]]
−	~~* [[Applications\|Application support]] *~~
−	* [[General\|General]]
−	* [[Programming\|Programming support]]

@@ Line 79: / Line 79: @@
 |}
-==Further Information==
+==Next Steps==
 ==Navigation==

@@ Line 33: / Line 33: @@
 </pre>
-Note the sample job above includes a 6 hour time limit.
+Note the sample job above includes a 6-hour time limit.
 <pre style="background-color: black; color: white; border: 2px solid black; font-family: monospace, sans-serif;">
@@ Line 43: / Line 43: @@
 ===Scaling Tests===
-It is useful to carry out scaling tests when running MIKE so that appropriate resource is requested to run a job. While requesting fewer nodes will mean the longer the job will run for, it is more likely that a job will start sooner the fewer nodes it requests. The sample job script above requests 16 nodes (448 cores).
+It is useful to carry out scaling tests when running MIKE so that appropriate resource is requested to run a job. While requesting fewer nodes will mean the longer the job will run, it is more likely that a job will start sooner the fewer nodes it requests. The sample job script above requests 16 nodes (448 cores).
-The table below shows runtimes for a test job over different numbers of nodes. For this example, the 3 minutes gained using 32 nodes over 16 nodes, provides little benefit and other users would be better having access to the 16 additional nodes. With contention for resource on Viper high, requesting 8 nodes would be a good compromise.
+The table below shows runtimes for a test job over different numbers of nodes. For this example, the 3 minutes gained using 32 nodes over 16 nodes, provides little benefit and other users would be better having access to the 16 additional nodes. With contention for resources on Viper high, requesting 8 nodes would be a good compromise.
 It is useful to carry out scaling tests with any significant change in job type.

@@ Line 81: / Line 81: @@
 ==Further Information==
-{|
+==Navigation==
-|style="width:5%; border-width: 0" | [[File:icon_home.png]]
 * [[Main_Page|Home]]
-* [[Applications|Application support]]
+* [[Applications|Application support]] *
 * [[General|General]]
 * [[Programming|Programming support]]

← Older revision		Revision as of 10:37, 10 May 2019
Line 34:		Line 34:

	Note the sample job above includes a 6 hour time limit.		Note the sample job above includes a 6 hour time limit.
−

	<pre style="background-color: black; color: white; border: 2px solid black; font-family: monospace, sans-serif;">		<pre style="background-color: black; color: white; border: 2px solid black; font-family: monospace, sans-serif;">

← Older revision		Revision as of 10:37, 10 May 2019
Line 1:		Line 1:
−	#~~REDIRECT~~ [[Applications~~/edit-Python~~]]	+	__TOC__
		+
		+	==Application Details==
		+
		+	* Description: MIKE
		+	* Version: 2017
		+	* Modules: Private module available on request to appropriate license holders
		+	* Licence: Limited license (The Energy and Environment Institute)
		+
		+	==Usage Examples==
		+
		+	===Batch Session===
		+
		+	<pre style="background-color: #E5E4E2; color: black; font-family: monospace, sans-serif;">
		+	#!/bin/bash
		+	#SBATCH -J MIKEjob
		+	#SBATCH -N 16
		+	#SBATCH --ntasks-per-node=28
		+	#SBATCH -o %j.log
		+	#SBATCH -e %j.err
		+	#SBATCH -p compute
		+	#SBATCH --time=0-06:00:00
		+
		+	module add use.own
		+	module add MIKE/2017
		+
		+	export OMP_NUM_THREADS=1
		+
		+	NP=$(( $SLURM_JOB_NUM_NODES * $SLURM_NTASKS_PER_NODE ))
		+	echo $NP "processes"
		+
		+	mpirun -n $NP FemEngineHD model.m21fm
		+	</pre>
		+
		+	Note the sample job above includes a 6 hour time limit.
		+
		+	===Scaling Tests===
		+	It is useful to carry out scaling tests when running MIKE so that appropriate resource is requested to run a job. While requesting fewer nodes will mean the longer the job will run for, it is more likely that a job will start sooner the fewer nodes it requests.
		+
		+	The table below shows runtimes for a test job over different numbers of nodes. For this example, the 3 minutes gained using 32 nodes over 16 nodes, provides little benefit and other users would be better having access to the 16 additional nodes. With contention for resource on Viper high, requesting 8 nodes would be a good compromise.
		+
		+	It is useful to carry out scaling tests with any significant change in job type.
		+
		+	{\| class="wikitable"
		+	! Nodes
		+	! Cores
		+	! Runtime (Mins:Secs)
		+	\|-
		+	\| 1
		+	\| 28
		+	\| 520:02
		+	\|-
		+	\| 2
		+	\| 56
		+	\| 258:07
		+	\|-
		+	\| 4
		+	\| 112
		+	\| 116:27
		+	\|-
		+	\| 8
		+	\| 224
		+	\| 70:47
		+	\|-
		+	\| 16
		+	\| 448
		+	\| 52:41
		+	\|-
		+	\| 32
		+	\| 896
		+	\| 49:14
		+	\|}
		+
		+	<pre style="background-color: black; color: white; border: 2px solid black; font-family: monospace, sans-serif;">
		+
		+	[user@login01 ~]$ sbatch MIKE.job
		+	Submitted batch job 1209671
		+
		+	</pre>
		+
		+	==Further Information==
		+
		+	{\|
		+	\|style="width:5%; border-width: 0" \| [[File:icon_home.png]]
		+	\|style="width:95%; border-width: 0" \|
		+	* [[Main_Page\|Home]]
		+	* [[Applications\|Application support]]
		+	* [[General\|General]]
		+	* [[Training\|Training]]
		+	* [[Programming\|Programming support]]
		+	\|-
		+	\|}

Applications/MIKE - Revision history

Pysdlb: /* Next Steps */

Pysdlb: /* Navigation */

Pysdlb at 11:44, 15 November 2022

Pysdlb at 13:19, 13 October 2022

Pysdlb at 13:18, 24 May 2019

Chris.collins: /* Scaling Tests */

Chris.collins: /* Scaling Tests */

Chris.collins: /* Batch Session */

Chris.collins at 10:37, 10 May 2019

Chris.collins: Created page with "__TOC__ ==Application Details== * Description: MIKE * Version: 2017 * Modules: Private module available on request to appropriate license holders * Licence: Limited license..."

Chris.collins: Created page with "TOC ==Application Details== * Description: MIKE * Version: 2017 * Modules: Private module available on request to appropriate license holders * Licence: Limited license..."