EC-Earth and CESM model timings

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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