Changes between Version 1 and Version 2 of WorkingGroups/AGRIF/01-30-2014-WGmeeting
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- 2017-04-07T17:21:58+02:00 (7 years ago)
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WorkingGroups/AGRIF/01-30-2014-WGmeeting
v1 v2 1 = = REPORT OF THE WORKING GROUP MEETING (January 30, 2014) == #REPORTOFTHEWORKINGGROUPMEETINGJanuary3020141 = REPORT OF THE WORKING GROUP MEETING (January 30, 2014) = 2 2 Participants : Rachid Benshila, Daley Calvert, Julien Calandreau, Jérome Chanut, Laurent Debreu, Christian Ethe, Rachel Furner, Claire Levy, Gurvan Madec, Sébastien Masson 3 3 4 == = 1) Discuss the update of the 3.6 version === #a1Discusstheupdateofthe3.6version4 == 1) Discuss the update of the 3.6 version == 5 5 ==== History : ==== 6 * [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF] version (and corresponding NEMOsubroutines) has been updated by Julien Calandreau (INRIA) and Laurent Debreu6 * [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF] version (and corresponding NEMO subroutines) has been updated by Julien Calandreau (INRIA) and Laurent Debreu 7 7 8 8 * Jérome Chanut has made a lot of improvements and bug fixes in his Gilbraltar Strait configuration … … 10 10 * Same for Sébastien Masson in the Pulsation ANR project 11 11 12 * Other developments in LIM,PISCES12 * Other developments in LIM, PISCES 13 13 14 14 ==== Bugs that have been identified and corrected since version 3.4 : ==== 15 * zwork array (J. Chanut): a global array « zwork » was defined in the libmpp module and (due to a bug in the [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF]converter) this led to several problems and in particular the update step was not performed …15 * zwork array (J. Chanut): a global array « zwork » was defined in the libmpp module and (due to a bug in the [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF] converter) this led to several problems and in particular the update step was not performed … 16 16 17 17 * Diffusion coefficients in the corners of the sponge layern were wrong (J. Chanut) … … 19 19 * Scale factors were not correctly computed in the ghost cells (where it is assumed that we are in full steps) (J. Chanut) 20 20 21 -> same problem for 21 -> same problem for OBC 22 22 23 * TKE (S. Masson): near the boundaries, spatial averaging operations led to wrong Kz in the first cell inside the high resolution domain. Extrapolation is possible but does not fulfill the requirement that with, a mesh refinement factor of 1, the obtained solution of the HR grid is identical to a solution computed without a zoom. S. Masson has implemented exchanges of TKEbetween coarse and fine grids.23 * TKE (S. Masson): near the boundaries, spatial averaging operations led to wrong Kz in the first cell inside the high resolution domain. Extrapolation is possible but does not fulfill the requirement that with, a mesh refinement factor of 1, the obtained solution of the HR grid is identical to a solution computed without a zoom. S. Masson has implemented exchanges of TKE between coarse and fine grids. 24 24 25 -> Same problem for GLS and forOBC25 -> Same problem for GLS and for OBC 26 26 27 27 * Asselin Filter (J. Chanut) : when updating the « after » (n+1) fields, the corresponding corrections of the « now » fields were not done. 28 28 29 * arrays out of bound in procnames in MPI (wrong declarations of [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF]profiles in agrif_declare_variables: jpi, jpj have been replaced by ncli,nlcj)29 * arrays out of bound in procnames in MPI (wrong declarations of [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF] profiles in agrif_declare_variables: jpi, jpj have been replaced by ncli,nlcj) 30 30 31 31 ==== Bugs / Problems that have been identified ==== #BugsProblemsthathavebeenidentified 32 32 · The bathymetry connection check is not complete (add a check that the coarse grid bathy have been correctly updated) 33 33 34 · Reproducibility is not guaranteed (due to MPIproblem) when ln_spc_dyn is set to true in namelist (which means that we take 0 as special value for dynamics in interpolations/updates).34 · Reproducibility is not guaranteed (due to MPI problem) when ln_spc_dyn is set to true in namelist (which means that we take 0 as special value for dynamics in interpolations/updates). 35 35 36 36 · Recursive updates. When more than 1 zoom level are set, the update should start from the highest resolution grid and go recursively to the root grid. Laurent implemented changes that makes this possible. 37 37 38 * Use of [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF]for degradation online (problème de north pole, coarsening)38 * Use of [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF] for degradation online (problème de north pole, coarsening) 39 39 40 40 * Average operators with update values … … 42 42 * High order operators with coastlines 43 43 44 * BDY 44 * BDY problem have been solved 45 45 46 46 ==== Improvements ==== #Improvements 47 * [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF] and time splitting (OK for version 3.6,end of the year, Jérome)48 * only consider forward integration of the forcing mode permits to 47 * [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF] and time splitting (OK for version 3.6, end of the year, Jérome) 48 * only consider forward integration of the forcing mode permits to ensure volume conservation 49 49 * without update of the parent grid right hand side 50 50 * Performance of parallel runs 51 51 * allows the distribution of the processors among the fine grids 52 52 53 '''''Rachid Benshila''' 53 '''''Rachid Benshila''' is ready be in charge of the merge'' 54 54 55 == = 2) What are the known open problems ? (not to be solved for 3.6) === #a2Whataretheknownopenproblemsnottobesolvedfor3.655 == 2) What are the known open problems ? (not to be solved for 3.6) == 56 56 * Number of ghost cells ('''''L. Debreu''''') 57 57 * Antartic problem (periodicity): require only one ghost cell instead of 2 58 58 * Number of required ghost cells for high order advection schemes may be larger than 2 59 * -> Remove hardcoding of the number of ghost cells, do the required modifications to the [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF]“profiles” (Laurent)59 * -> Remove hardcoding of the number of ghost cells, do the required modifications to the [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF] “profiles” (Laurent) 60 60 61 61 * North fold problem … … 63 63 * Timings for each grid 64 64 65 == = 3) What are the main next developments? === #a3Whatarethemainnextdevelopments65 == 3) What are the main next developments? == 66 66 * Coupling between grids at the level of the barotropic mode (in time splitting version) (Jérome) 67 * requires some modification in the organization of the step routine of 67 * requires some modification in the organization of the step routine of NEMO 68 68 69 69 * Vertical grid refinement (Laurent) 70 * Online coarsening for tracers using [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF](L. Debreu, G. Madec)71 * [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF] 70 * Online coarsening for tracers using [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF] (L. Debreu, G. Madec) 71 * [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF] with variable volume 72 72 73 == = 4) Nesting tools: ===73 == 4) Nesting tools: == 74 74 Two stages: 75 75 … … 87 87 b) next version 88 88 89 * The definition of vertical coordinates should be done outside 89 * The definition of vertical coordinates should be done outside NEMO 90 90 91 91 * Nesting tools for the s coordinates 92 92 93 == == 5) Documentation: ====93 == 5) Documentation: == 94 94 * Update of the nesting tools 3.6 documentation 95 95 96 * Update of the users guide: describes what is possible or not with 96 * Update of the users guide: describes what is possible or not with [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF]. 97 97 98 * Documentation for nesting in 98 * Documentation for nesting in NEMO/[http://www-ljk.imag.fr/MOISE/AGRIF AGRIF]: starts from the notes of Sebastien, then circulate the powerpoint 99 99 100 100 * GMD paper 101 101 102 == = 6) Standard configuration and sanity tests === #a6Standardconfigurationandsanitytests102 == 6) Standard configuration and sanity tests == 103 103 The standard configuration should: 104 104 … … 107 107 * Uses time splitting 108 108 109 * Include a zoom in a sea ice area (Labrador Sea, 109 * Include a zoom in a sea ice area (Labrador Sea, LIM3) 110 110 111 * Include a zoom with 111 * Include a zoom with PISCES 112 112 113 113 * Zoom in Perou Chili … … 119 119 * Test constancy preservation for tracers 120 120 121 Longer visions of having [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF]zoom in AMM121 Longer visions of having [http://www-ljk.imag.fr/MOISE/AGRIF AGRIF] zoom in AMM 122 122 123 123 S coordinates zoom inside a z coordinate parent grid.
