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....

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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 https://forge.ipsl.jussieu.fr/nemo/svn/branches/nemo_v3_3_beta/NEMOGCM (read only)
svn+ssh://"your_login"@forge.ipsl.jussieu.fr/ipsl/forge/projets/nemo/svn/branches/nemo_v3_3_beta/NEMOGCM (read/write).

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List of tests done and results:

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

Description	Revision no	Configuration	Computer	Perf. memory	Perf. CPU	Restartability	Others

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List of problems, solutions…

Before releasing it to developper's for beta testing, the following weaknesses should be solved: (please update the informations)

Date	Revision no	Problem description	To be solved by:	State	Date	Version
		with AGRIF	LOCEAN and LJK	Compilation now OK but not execution
		new EVP rheology got lost during the merge	MERCATOR & LOCEAN	routines and namelist commited, some tests still ongoing??	27 Oct 2010	2320
		Atmopheric pressure	MERCATOR & LOCEAN
		Suppress TKE old option	LOCEAN	done, ticket #742	22 Oct 2010
		add LibIGCM as external	LOCEAN	tbd
		choose between key_mpp_rep1 and key_mpp_rep2, rename it key_mpp_rep and clean the code	LOCEAN	done, ticket #743	22 Oct 2010
		add surface pressure forcing	MERCATOR	tbd
		correct input files, in ORCA2_LIM tar file, suppress duplicated files, rename chlorophyll one to fit the namelist, add a sample of observation file	LOCEAN	tbd
		bottom condition for GLS should be checked	MERCATOR	done	20 Oct 2010	rev 2309 in zdfbfr.F90
		execution fails after 2 time step using time splitting and VVL	UKMO and LOCEAN	modifications sent by LOCEAN and checked by UKMO
		Compilation erros to be fixed	NOC	under test	9 November
		Modifications on Griffies operator to be added	NOC

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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

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Schedule:

• 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)

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Announcement of 3_3 to users (To be improved, in particular by adding the ticket number to find more details on the development)

Main features:

Scientific and numeric Developments

• Lateral ocean physics: Griffies operator added
• Vertical mixing scheme Generic Length Scale (GLS) added
• Changes in bottom boundary layer (bbl)
• Develop mixed laplacian-bilaplacian diffusion
• Time stepping : modified Leap-Frog Asselin filter (MLF) implemented
• Sea-ice: the Elasto-Visco Plastic (EVP) rheology has been added in LIM2 (the oldest version of the sea-ice component)
• Atmospheric pressure forcing added
• Change formulation of the fluxes between ocean, ice and atmosphere : an exchange of water (mass exchange) is now explicitly associated with an exchange of heat and salt content.
• New implementation of river runoffs
• Diurnal cycle added
• 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

Computing Developments

• Performance improvements in parallel (MPI)
• Reorganisation in tracers transport computation (merge of TRA and TRC modules)
• Biogeochemistry offline (TOP) reorganised (avoid routines dupplication between on-line and offline use of TOP)
• "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)

Documentation

• 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

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