= Performance of Standard Configurations =

== Global Atmosphere 7.0/Global Land 7.0 ==

||= Suite id =||= Description =||= UM Version =||= Date Run =||= Platform =||= Decomposition* =||= OpenMP Threads =||= Length of run =||= Dump Frequency =||= Wallclock =|| Data output vol || Comment || Cost/model-yr ||
|| u-ab878 || GA7.0 N96 AMIP || 10.3 || 10.02.17 || ARCHER || 16 x 12 || 2 || 30 days || 10 days || 01:07:53 || || ||
|| u-ag689/n216 || GA7.0 N216 AMIP || 10.5 || 22.06.17 || ARCHER || 42 x 36 || 1 || 10 days || 10 days || 00:29:27 || || ||
|| u-ak155 || GC3.1 N216 ORCA025 || 10.6.1 || 07.06.17 || ARCHER || A:42x36 O:24x26 X:12 (6 nodes) || 1 || 30 days || 10 days || 01:24:29 || || ||
|| u-ai862 || GC3.0 N96 ORCA025 || 10.6 || 20.07.17 || ARCHER || A:16x18 O:18x26 X:8 (4 nodes) || 1 || 10 days || 10 days || 00:27:03 || || ||
|| u-aq711 || piControl N216-ORCA025 || 10.7 || 17.10.17 || ARCHER || A:36x24x2 O:30x30 X:8 nodes (16/2) || 2 (atm) || 1 mnth || 10 days || 1:45:00  || || 25% variation in run times - expensive because multi-threaded (necessary?) working copy only || ||
|| u-as037 (r59528) || GC3.1 N96 ORCA1 PI Control CMIP6 || 10.7 || 11.11.17 || ARCHER || A:12x8 O:9x8 X:6 (3 nodes) || 2 || 1m || 10 days || 00:56:59 || 162Gb (History_Data - 2month run) || || ||
|| u-au173 || GA7.0 N96 UM10.9 AMIP Climate Development (1988 - 2008) || 10.9 || 17.01.18 || ARCHER || A:16x24 || 1 || 30 days || 10 days || 00:36:17 || || || ||
|| u-av321 || GA7.0 N96 UM10.7 AMIP Climate Development (1988 - 2008) || 10.7 || 23.02.18 || ARCHER || A:16x24 || 2 || 30 days || 10 days || 00:30:47 ||  || ||
|| u-ba767 || GA7.0 N96 UM11.1 AMIP Climate Development (1988 - 2008) || 11.1 || 31.08.18 || ARCHER || A:14x18 || 2 || 30 days || 10 days || 00:33:05 ||  || Note-average time over 1st 3M || ||
|| u-ba767 || GA7.0 N96 UM11.1 AMIP Climate Development (1988 - 2008) || 11.1 || 04.09.18 || ARCHER || A:24x24 || 2 || 30 days || 10 days || 00:26:25 ||  || Note-average time over 1st 3M- (00:29:35, 00:24:34, 00:25:06) || ||


== UKESM ==

||= Suite id =||= Description =||= UM Version =||= Date Run =||= Platform =||= Decomposition* =||= OpenMP Threads =||= Length of run =||= Dump Frequency =||= Wallclock =|| Data output vol || Comment || Cost/model-yr ||
|| u-an561 || UKESM0.6-CN PI, new oxidants file, lana, !StratTrop || 10.6 || 06.29.17 -- 07.17.17 || ARCHER || A:48x24 O:9x12 || 1 || 1yr (12 x 1 mnth cycles) || 10 days || 12 x 52 mins || 111GB (archived (no dumps, pp+compressed netcdf)) || || ||
|| u-q606 || UKESM0.8-CN N216 ORCA025 (some improvements) || 10.7 || 04.10.17 || ARCHER || A:36x24 O:30x30 X:4 nodes (8/2) || 1 || 1 mnth || 10 days || 2:00:00  || || working copy only || ||
|| u-az760_8.3.7-GL || UKESM1 alpha release || 11.0 || 16-09-18 || ARCHER || A:48x24x1 O:9x8 X:3 nodes (6/2) || 1 (atm) || 1 mnth || 30 days || 00:49:00  || ~60GB ||  working copy only - not for production runs || 190 kAU ||
|| u-bc108 || UKESM1.0-beta historical || 11.1 ||  || ARCHER || A:48x24x1 O:12x8 X:3 nodes (6/2) || 1 (atm) || 1 mnth || 30 days ||   ||  ||  not yet for production runs CPMIP metrics not working yet ||  kAU ||
|| u-bc409 || UKESM1.0-beta pre-industrial control || 11.1 ||  || ARCHER || A:48x24x1 O:12x8 X:3 nodes (6/2) || 1 (atm) || 1 mnth || 90 days || 90 days || 01:53:00 ||  not yet for production runs no CMPMIP metrics yet ||  158 kAU ||


*Decomposition: A = Atmos (EW x NS), O = Ocean (EW x NS), X = XIOS processes (nodes)

== A more detailed view of u-as037 (r 61036) running on ARCHER ==
This looks at the performance of `HadGEM3-GC3.1 N96ORCA1 PI Control for CMIP6` over a wide range of atmosphere decompositions with a fixed number of IO servers (6).  The model was run on ARCHER in December, 2017.  The ocean decomposition was 9x8 and the XIOS used 6 processes.  The atmosphere was run with two threads, except for one run at 36x28 where three threads were used (3,186 processes in the graph below).

The following graphs show the model rate (in model years per day) against cost and total number of processes.  Each point in the graph is the result of running the coupled suite for a model month. The cost axis was obtained by rescaling the processors axis in the lower graph.  The cost of computing the graph was 440 kAU.

[[Image(Rplot05.jpeg )]] 



[[Image(Rplot06.jpeg )]]


Similar calculations are performed for GA7.0. Real costs are used. The performance appears badly affected in the high processor limit.

|| [[Image(GA7cpuGraphNew.png, 400px)]]|| [[Image(GA7costGraphNew.png, 400px)]]||