| Version 11 (modified by clevy, 3 years ago) (diff) |
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Name and subject of the action
Last edition: Wikinfo(changed_ts)? by Wikinfo(changed_by)?
The PI is responsible to closely follow the progress of the action, and especially to contact NEMO project manager if the delay on preview (or review) are longer than the 2 weeks expected.
Summary
| Action | OASIS_TESTCASE : create a test case for coupling with OASIS |
|---|---|
| PI(S) | Claire Lévy |
| Digest | Motivations and main tasks: create a simple testcase using OASIS to help building new coupled configurations |
| Dependencies | OASIS |
| Branch | source:NEMO/branches/2020/dev_r12565_VALID-11_clevy_OASIS_TESTCASE |
| Previewer(s) | E. Maisonnave & Laure Coquart |
| Reviewer(s) | E. Maisonnave & Laure Coquart |
| Ticket | #2379 |
Description
Create a simple testcase using OASIS to help building new coupled configurations.
Will use OASIS and a simplified fake atmosphere (TOY_ATM in OASIS wording.
May do more than only ocean-atmosphere coupling (to be discussed).
Useful as coupling demonstrator and for first level valisation of coupling with OASIS in future NEMO versions.
Implementation
As for the test case defined in STEP1 (see below):
- no changes in NEMO code
- Changes in &namsbc_cpl namelist
- Need to add the TOY_ATM software, as a simplified /fake atmosphere somewhere to be able tu run this test case
Documentation updates
Updates needed:
- On line documentation (to be committed in rst files) :
- Reference manual: does not seem to include information the key_oa3mct_v3 cpp key, needed for this test case. Is it useful?
Preview
Methodology
STEP 1: Implement in the up-to-date version for 2020 the test case developed in 2018
Restarting from /ccc/work/cont003/gen7451/clevy/VALID_CPL_4.0/trunk/cfgs/CPL_TOYATM in irene computer, implement the CPL_OASIS in the up-to-date NEMO version, as a test case (in "dev_branch"/tests).
CPL_OASIS test case description:
- Based on the ORCA2_ICE_PISCES reference configuration, activate coupling to a TOYATM (kindly offered by Eric M.) through OASIS
- coupled fields (from &namsbc_cpl namelist in namelist_cfg file)
- runing 10days, coupling every time step (nn_fsbc=1)
- The test cases needs OASIS and a simple TOYATM
- Where should the TOYATM be installed? In the test case, in NEMO tools? elsewhere?
- Validation of the test case remains to be defined more precisely (check OASIS output ATSSTSST_toyatm_01.nc compared to ocean SST ?)
STEP 2: is this the final version of the expected test case?
- Adding other couplings?
- Checking sea-ice?
STEP 3: implement final test case
Implement the finalised test case as part of the usual validation testbed, and also in the github for NEMO test cases
Answer from reviewers is in the ticket #2379. For E. Maisonnave & L. Coquart, review is successful and development can start
Validation:
This toy is able to validate a simplified OASIS based coupled configuration of NEMO in such a way that:
- the OASIS library can be compiled on the targeted machine (OASIS libraries available in the OASIS directory)
- the OASIS library can be linked with a coupled configuration of NEMO (the NEMO executable is available in the NEMO cfg directory) and an atmosphere toy model (executable available in the tools/TOYATM directory)
- an MPI MPMD system (two executables at the same time) can be launched on the machine and a successful simulation can be achieved if :
- a run.stat file is produced and includes 160 iterations:
| echo false |
- OASIS indicates a successful end of the run:
| echo false |
- the sea surface temperature (Tropical Pacific region) as seen by the toy atmosphere model is close to 300.20 K and the difference between the end and the beginning values doesn't exceed 0.5 K
This can be checked e.g. in the check file produced by the commands: ncks -h -v ATSSTSST -d nx,80,120 -d ny,0,10 ATSSTSST_toyatm_01.nc tropical_sst.nc ; ncwa -h -a nx,ny tropical_sst.nc check.nc
Tests
...
Review
...
