Performance Monitoring

@thomasmelvin is already working on this.

Since Apr 2, 2026.

### Are there any linked Issues or Pull Requests?

None

### Brief description

Monitor the performance of the lfric model across global and regional configurations

### Further details of the issue.

There is a branch associated with this issue for developing the performance jobs:
* https://github.com/thomasmelvin/lfric_apps/tree/performance

This is (cut down) timer from the Dec 25 KPI report (C896 in 98 nodes)

| Routine | min time(s) | mean time(s) | max time(s) | No. calls | %time | time per call(s) |
|------------------------------|-------------------|-------------------|-------------------|-------------------|-------------------|-------------------|
| **lfric_atm** | 646.49| **646.57** | 649.51| 1| 100.0000| 646.5723|
| gungho_initialise| 97.57| 97.61| 97.64| 1| 15.0962| 97.6075|
| field.halo_ex_1| 79.80| 100.21| 135.91| 1432959| 15.4982| 0.0001|
| halo_routing_creation| 18.61| 21.46| 23.39| 1471594| 3.3196| 0.0000|
| xios_close_context_definition| 55.08| 55.23| 55.44| 1| 8.5421| 55.2311|
| finalise_xios_context| 18.34| 18.36| 21.36| 2| 2.8395| 9.1798|
| field.read| 9.08| 9.20| 10.35| 66| 1.4230| 0.1394|
| lfric_xios_read_fldg| 9.08| 9.20| 10.35| 66| 1.4230| 0.1394|
| mappings.set_wind| 5.56| 15.50| 45.84| 1441| 2.3970| 0.0108|
| runtime_constants.fem| 0.75| 2.18| 2.67| 31| 0.3367| 0.0702|
| runtime_constants.dycore| 8.79| 9.25| 11.08| 13| 1.4301| 0.7113|
| mass_matrix_solver_alg| 13.56| 15.14| 17.77| 1821| 2.3417| 0.0083|
| mappings.map_physics_fields| 13.04| 13.86| 14.40| 361| 2.1435| 0.0384|
| gungho_diagnostics_driver| 62.38| 63.36| 64.63| 361| 9.7989| 0.1755|
| field.write| 2.93| 3.22| 3.66| 143034| 0.4982| 0.0000|
| lfric_xios_write_fldg| 2.20| 2.49| 2.88| 13287| 0.3857| 0.0002|
| gungho_driver_first_timestep | 22.86| 22.89 | 22.93| 1| 3.5402| 22.8898|
| **gungho_driver_timestep** | 530.24| **530.29** | 530.34| 360| 82.0159| 1.4730|
| semi_implicit_timestep| 466.50| 467.75| 468.67| 360| 72.3434| 1.2993|
| dynamics.compute_si_operators| 10.45| 10.55| 10.64| 26| 1.6316| 0.4058|
| slow_physics| 81.33| 81.67| 82.06| 360| 12.6306| 0.2268|
| dynamics.rhs_alg| 20.65| 22.19| 25.20| 1800| 3.4312| 0.0123|
| dynamics.transport_predictors| 4.22| 4.75| 5.17| 360| 0.7346| 0.0132|
| dynamics.transport| 68.94| 70.81| 72.38| 720| 10.9514| 0.0983|
| dynamics.phys_predictors| 12.20| 13.52| 16.11| 720| 2.0903| 0.0188|
| fast_physics| 93.57| 95.47| 97.69| 720| 14.7659| 0.1326|
| dynamics.solver| 121.64| 122.38| 123.11| 1440| 18.9273| 0.0850|
| cloud| 5.98| 6.43| 7.17| 360| 0.9945| 0.0179|
| ukca| 14.99| 16.24| 17.06| 360| 2.5112| 0.0451|
| diags.pmsl| 58.14| 58.96| 59.99| 360| 9.1187| 0.1638|
| gungho_finalise| 18.38| 18.39| 21.39| 1| 2.8441| 18.3891|

And this version is from main

| Routine | min time(s) | mean time(s) | max time(s) | No. calls | %time | time per call(s) |
|------------------------------|-------------------|-------------------|-------------------|-------------------|-------------------|-------------------|
| **lfric_atm**| 675.49| **675.50**| 679.60| 1| 100.0000| 675.5033|
| __setup__| 161.17| 161.22| 161.26| 1| 23.8672| 161.2240|
| gungho_driver.initialise| 161.17| 161.22| 161.26| 1| 23.8671| 161.2229|
| lfric_xios.init_context| 73.97| 74.64| 74.94| 1| 11.0494| 74.6388|
| field.halo_ex_1| 81.74| 98.42| 120.04| 1432886| 14.5702| 0.0001|
| halo_routing_creation| 18.76| 22.96| 26.14| 1471513| 3.3990| 0.0000|
| xios.close_context_definition| 71.16| 71.30| 71.50| 1| 10.5551| 71.3001|
| lfric_xios.finalise_context| 18.92| 18.93| 23.09| 2| 2.8027| 9.4663|
| field.read| 55.05| 55.22| 55.29| 66| 8.1745| 0.8367|
| lfric_xios.read_fldg| 55.04| 55.22| 55.29| 66| 8.1745| 0.8366|
| mappings.set_wind| 6.76| 11.63| 24.42| 1441| 1.7212| 0.0081|
| runtime_constants.dycore| 1.19| 1.23| 1.36| 13| 0.1821| 0.0946|
| mass_matrix_solver_alg| 13.03| 14.05| 14.97| 1821| 2.0797| 0.0077|
| mappings.map_physics_fields| 12.13| 13.02| 13.45| 361| 1.9279| 0.0361|
| gungho_diagnostics_driver| 62.46| 63.29| 63.91| 361| 9.3689| 0.1753|
| field.write| 2.86| 3.35| 3.99| 140271| 0.4958| 0.0000|
| lfric_xios.write_fldg| 2.22| 2.65| 3.23| 13297| 0.3927| 0.0002|
| gungho_driver.first_timestep| 19.31| 19.34| 19.39| 1| 2.8635| 19.3427|
| gungho_timestep| 432.08| 432.66| 433.49| 360| 64.0506| 1.2018|
| semi_implicit_timestep| 432.06| 432.64| 433.46| 360| 64.0474| 1.2018|
| dynamics.compute_si_operators| 7.38| 7.47| 7.55| 24| 1.1059| 0.3113|
| slow_physics| 80.39| 80.69| 81.00| 360| 11.9452| 0.2241|
| dynamics.rhs_alg| 17.20| 18.43| 20.04| 1800| 2.7279| 0.0102|
| dynamics.transport_predictors| 4.05| 4.55| 5.08| 360| 0.6738| 0.0126|
| dynamics.transport| 74.73| 75.77| 76.95| 720| 11.2174| 0.1052|
| dynamics.phys_predictors| 11.88| 12.67| 13.29| 720| 1.8763| 0.0176|
| fast_physics| 83.08| 83.98| 84.88| 720| 12.4327| 0.1166|
| dynamics.solver| 105.37| 106.19| 106.98| 1440| 15.7202| 0.0737|
| cloud| 6.02| 6.39| 7.30| 360| 0.9464| 0.0178|
| ukca| 12.65| 13.28| 14.06| 360| 1.9665| 0.0369|
| diags.pmsl| 58.27| 58.97| 59.54| 360| 8.7294| 0.1638|
| **gungho_driver.timestep** | 475.67| **475.76** | 475.78| 359| 70.4298| 1.3252|
| gungho_driver.finalise| 18.95| 18.96| 23.12| 1| 2.8070| 18.9611|
| xios.context_finalize| 15.93| 15.93| 15.96| 1| 2.3589| 15.9347|