EC-Earth and CESM model timings

Timing information for the EC-Earth and CESM1 models run on NSC's triolith system. All timing results are calculated from 2 month simulations (Jan-Feb), extrapolated to a full simulated year based on the number of days (365 / 59). So, the throughput measured as sim_years / day values is calculated as:

sim_years / day = (24 * 60)/(2 month sim time * (365/59))

and the efficiency (pe_hours / sim_year) is calculated as:

ps_hours / sim_year = (24 * total number of cores)/(sim_years/day)

EC-Earth version 3

EC-Earth T159L62 ORCA1L46 LIM3

# cores (ifs/nemo/oasis)	2 month sim. time	sim_years / day	pe_hours / sim_year
32/32/10	28:27	8.18	217.1
32/48/10	26:50	8.67	246.6
64/48/10	20:32	10.81	270.9
64/64/10	16:53	13.83	239.5
64/96/10	15:20	15.18	268.8
64/128/10	15:07	15.40	314.8
128/128/10	11:35	20.10	317.6
128/160/10	11:35	20.10	355.8

EC-Earth T255L91 ORCA1L46 LIM3

# cores (ifs/nemo/oasis)	2 month sim. time	sim_years / day	pe_hours / sim_year
96/48/10	39:24	5.91	625.4
128/64/10	32:01	7.27	666.9
144/48/10	29:05	8.00	606.0
160/80/10	27:56	8.33	720.3
192/48/10	24:39	9.44	635.6
192/64/10	24:30	9.50	672.0
240/80/10	21:27	10.85	730.0
256/64/10	20:34	11.34	698.4
288/144/10	19:23	12.01	883.3
320/80/10	19:01	12.24	803.9
384/96/10	16:46	13.88	874.3
432/144/10	15:12	15.31	918.6
576/144/10	15:26	15.08	1161.8

The CESM family of models (including CCSM4.0 and NorESM)

For assistance with load balancing other CESM resolutions or compsets, email: support@nsc.liu.se.

CCSM4.0 f19_g16 (1.9x2.5 atm/1 deg ocn), B compset

# cores (total)	2 month sim. time	sim_years / day	pe_hours / sim_year	pecount
32	42:08	5.52	139.0	S
80	18:46	12.40	154.8	M
160	11:06	20.96	183.2	L

CESM1.0.5 f09_f09, F_2000_CN compset (prescribed SST and sea ice)

# cores (total)	2 month sim. time	sim_years / day	pe_hours / sim_year
128	19:36	11.88	258.61
256	12:22	18.81	326.60
512	10:57	21.25	578.25
1024	13:05	17.80	1381.02

CESM1.0.5 f05_f05, F_2000_CN compset (prescribed SST and sea ice)

# cores (total)	2 month sim. time	sim_years / day	pe_hours / sim_year
256	62:07	3.75	1639.73
512	39:12	5.94	2069..80
1024	31:59	7.28	3376.02
2048	28:50	8.07	6087.98

CESM1.1.1 f19_g16 (1.9x2.5 atm/1 deg ocn), B compset

# cores (total)	2 month sim. time	sim_years / day	pe_hours / sim_year	pecount
80	18:11	12.08	158.9	S
128	12:25	18.75	163.8	M
256	7:25	31.37	195.9	L

CESM1.1.1 f05_g16 (0.47x0.63 atm/1 deg ocn) B compset

# cores (total)	2 month sim. time	sim_years / day	pe_hours / sim_year
528	35:33	6.55	1934.7

CESM1.2.0 f19_g16 (1.9x2.5 atm/1 deg ocn), B compset

# cores (total)	2 month sim. time	sim_years / day	pe_hours / sim_year	pecount
80	19:38	11.86	161.9	S
128	13:14	17.60	174.6	M
256	7:35	30.68	200.3	L

NorESM (CMIP5) f19_g16 (1.9x2.5 atm/1 deg ocn) N2000AERL compset

# cores (total)	2 month sim. time	sim_years / day	pe_hours / sim_year	pecount
32	1:02:53	3.70	207.6	S
80	33:26	6.96	275.7	M/L