Top speeds

The top speeds in model years/day for up to 2 threads for UM (OpenMP is unavailable to NEMO). I've not included I/O server and XIOS nodes in table below.

Entries in red show the components to have reached top speed.

Config- uration N216 nodes N96 nodes ORCA025 nodes Total nodes Speed
UKESM AMIP 240 242 2.2
UKESM 88 64 157 1.3
UKESM without MEDUSA 160 28 191 1.7
UKESM-hybrid AMIP (Jnr Δt=15min) 160 75 223 3.3
UKESM-hybrid AMIP (Jnr Δt=20min) 128 75 207 3.7
UKESM-hybrid without MEDUSA 96 75 64 242 2.8
  • MEDUSA ORCA025 limits speed of almost all configurations
    • Can we speed it up? DEGRAD/AGRIF?
  • Comparing UKESM-hybrid AMIP N216 N96 to UKESM-AMIP N216
    • For Jnr Δt=15mins, 54% faster
    • For Jnr Δt=20mins, 70% faster
  • Comparing UKESM-hybrid N216 N96 ORCA025 to UKESM N216 ORCA025
    • 70% faster

Not shown here

  • For same resources, UKESM-hybrid AMIP N216 N96 is about 55% faster than UKESM-AMIP N216