Version 21 (modified by clevy, 10 years ago) (diff)

2010: from merge party to 3_3 release

Last edited Timestamp?

This page is intended to faciltate the work of the next weeks, i.e. beween the merge party and the release of 3_3. Feel free to edit it to add your informations comments, suggestions….

19 october 2010: branch nemo_v3_3_beta created

After the merge party, the branch with all developments of the year is build:
This beta version is available using :
svn co (read only)
svn+ssh://"your_login" (read/write).

List of tests done and results:

Add here test description (Branch nemo_v3_3_beta, Revision2298 (now) , configuration, computer, restartability, …)

DescriptionRevision noConfigurationComputerPerf. memoryPerf. CPURestartabilityOthers

List of problems, solutions…

Before releasing it to developper's for beta testing, the following weaknesses should be solved: (please add the info when it is)

Pb with source code, environement, building the executable…

compilation failed with AGRIF (to be done at LOCEAN and LJK)

new EVP rheology got lost during the merge ( Mercator)

20 Oct 2010: routines are ok, tests are runnings. 27 Oct 2010: routines and namelist commited ( rev 2320 )

suppress tke_old(to be done at LOCEAN)

22 Oct 2010: DONE, ticket #742

add LibIGCM as external (tbd at LOCEAN)

choose between key_mpp_rep1 and key_mpp_rep2, rename it key_mpp_rep and clean the code (tbd at LOCEAN)

22 Oct 2010: DONE, ticket #743

add surface pressure forcing (tbd at Mercator)

correct input files (tbd at LOCEAN)

in ORCA2_LIM tar file, suppress duplicated files, rename chlorophyll one to fit the namelist, add a sample of observation file

Pb while running the code

bottom condition for GLS should be checked (Mercator)

20 Oct 2010: routines are ok, tests are runnings. 25 Oct 2010: modification is under svn ( rev 2309, see zdfbfr.F90 ).

time splitting and VVL (UKMO and LOCEAN)

code explode after 2 time steps…

Rules to follow:

  • all correction to the developments done in 2010 should be done on the beta branch, not on the original branch
    - contribution to the documentation should be send directly to Gurvan, with Rachid on copy
    - between now end the tag nemo_v3_2_2 correction of bugs have to be done on both the trunk and the beta branch when the bugs are on the two version


  • diffusion to the developers at the beginning of november
    - tag a last version stable of nemo_v_3_2 (nemo_v3_2_2) at the end of december
    - put back the beta version on the trunk just after
    - tag and release nemo_v3_3
    - delete the developments branches for 2010 (if they went back to the new version off course)

Announcement of 3_3 to users (To be done)

Main features:

Scientific and numeric Developments

  • Lateral ocean physics: Griffies operator added
  • Sea-ice: the Elasto-Visco Plastic rheology has been added in LIM2 (the oldest version of the sea-ice component)
  • Atmospheric pressure
  • Vertical mixing scheme Genric Length Scale GLS added
  • Revision of mass and salt fluxes
  • New implementation of river runoffs
  • changes in bottom boundary layer (bbl)
  • Diurnal cycle added
  • Time stepping : modified Leap-Frog Asselin filter (MLF) implemented
  • Coupling interface for WRF atmospheric model added
  • Development of data assimilation modules OBS and ASM
  • Linear-tangent and Adjoint component (TAM) added, phased on tag 3.0
  • Develop mixed laplacian-bilaplancian diffusion

Computing Developments

  • Performance improvements in parallel (MPI)
  • Reorganisation in tracers transport computation (merge of TRA and TRC modules)
  • "On the fly" interpolation added for input (forcing) files
  • Use of FCM (Flexible Configuration Manager) to build the chosen configuration, generate Makefile and run it to produce the executable)


  • Major updates in the reference manual, which is now more in phase with the code
  • Smaller updates on the web pages documentation (but FAQ page more actie from now on)
  • Detailed documentation and results of the reference configuration ORCA2_LIM forced by CORE II

Major changes

  • In MPP, number of processors is now done by cpp keys: -Dkey_nproci=2 Dkey_nprocj=2 for instance'
  • FCM use changes the diectory hierarchy and the way to set up configuration and create executable