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revision 1.1110 by mlosch, Fri May 29 10:44:50 2009 UTC revision 1.1145 by mlosch, Thu Jul 30 07:38:54 2009 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice:
8     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
9       2d-fields, for slightly better performance
10    checkpoint61t
11  o pkg/seaice:  o pkg/seaice:
12     - remove unused variables in seaice_evp
13     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
14    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
15       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
16       each processor opens a different file (a fix from Matt).
17    o cg2d:
18       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
19       this reduces number of EXCH calls by 2 when using exch2.
20       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
21       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
22    o pkg/thsice:
23       add code for Near Infra-Red albedo (from Jeff)
24       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
25    o ini_model_io:
26       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
27       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
28       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
29    
30    checkpoint61s
31    o pkg/exch2 (exch2_rxN_cube*):
32       remove last BARRIER (no need to synchronise after getting data from shared
33       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
34    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
35      and generate new output (for the 2 tests) using default rotationPeriod.
36    o pkg/exch2:
37      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
38        (was already the case with AUTODIFF_EXCH2 defined)
39      - add bj in exch2 arrays and S/R.
40      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
41        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
42    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
43      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
44        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
45      - verification experiment natl_box.longstep
46    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
47      allow different versions of ifort (8 or 9) and different versions
48       of mpi (mpich or mpich2) to be used with the same optfile.
49      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
50       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
51    o pkg/seaice:
52      fix previous modif (3-level field removed) for old-pickup reading
53    
54    checkpoint61r
55    o pkg/seaice:
56     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
57      1. introduce fields for time step (N-1)
58      2. do not use levels 2 and 3 anymore (but keep them)
59      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
60         includes changes to pkg/thsice/thsice_get_velocity.F,
61         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
62         pkg/obcs/obcs_apply_uvice.F.
63     - completely remove code for leap-frog time stepping for second order
64       advection
65     - adjusted adjoint accordingly;
66       gradient checks have improved by an order of magnitude!
67    
68    checkpoint61q
69    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
70     - the boundary conditions along open boundaries are unclear, because the
71       associated masks are set to zero and are thus treated as closed when
72       applying the slip-boundary conditions.
73     - move initialisation of grid variables from seaice_init_varia to _fixed
74    o adding doc/diags_changes.txt
75    o model/src:
76      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
77       to avoid "_diags" naming if no relation to pkg/diagnostics.
78      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
79       file and only call PLOT_FIELD_XYZ if debugMode=T.
80      remove few PLOT_FIELD_XY calls outside initialisation.
81      remove few unnecessary BARRIER.
82    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
83      of salt_plume package in Southern Ocean
84    o pkg/thsice:
85     - fix hOceMxL in overlap (needed for sea-ice advection);
86       update output of experiment global_ocean.cs32x15.icedyn.
87    o pkg/seaice:
88     - make the (placeholder-)tracer IceAge a little more meaningful
89      by avoiding ridging of age due to convergent ice flow
90     - add diagnostics for surface temperature, atmospheric and oceanic
91       heat flux, and atmospheric and oceanic ice growth
92    
93    checkpoint61p
94    o eesupp (global_max & global_sum):
95     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
96     - remove starting & endding barrier (no longer needed)
97    o pkg/mdsio, writelocal:
98       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
99       (remove the STOP): uses shared buffer IO to store data from all threads
100       and then let master-thread write nThreads tiles.
101    o pkg/mdsio (read/write field):
102     - tiled IO done in 1 piece (all levels at a time);
103     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
104     - multi-threaded: allow to read/write local (non-shared) array
105       (was already working with singleCpuIO ; now works also without);
106       => no longer needs barrier call after reading a file (added inside
107       mds_read/write field).
108     - move barrier calls outside gather/scatter_2d to mds_read/write_field
109    o pkg/obcs/exf
110      - exf_getffieldrec.F: add a few ". _d 0" and
111                            add code to catch the case fldperiod = 0.  
112      - obcs_precribe_read.F: change if statements so that they match
113                              the variable type (_RL)
114      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
115        exf_iprec) as part of namelist EXF_NML_01
116    o pkg/mdsio:
117      - read/write tiled (local) files: read/write 1-level tile chunk at a time
118        (instead of segment of length sNx); expected to speed up tiled IO.
119    o pkg/exch2:
120      - take buffer copy from/to array out of S/R exch2_send/recv into new
121        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
122        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
123      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
124      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
125        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
126        including Topology header file (and common blocks).
127      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
128        remove 2nd exch call in exch2_s3d_rx (no longer needed).
129      - document S/R arg. list (+ update some comments)
130    o pkg/seaice:
131      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
132        temperature and humidity over sea ice based on climatological values.
133      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
134        of LSR (this change is expected to change the results slightly because now
135        it uses slightly difference moduli from the second last LSR solution, but
136        that is more consistent with the stress computations; this part of the code
137        is not tested in the verification experiments)
138    - fix diagnostics for flux of ice in case of B-grid    - fix diagnostics for flux of ice in case of B-grid
139    - turn strain rates eij and press into global fields within global    - turn strain rates eij and press into global fields within global
140      common block in SEAICE.h for more straighforward diagnostics      common block in SEAICE.h for more straighforward diagnostics
# Line 12  o pkg/seaice: Line 142  o pkg/seaice:
142      to give something meaning full      to give something meaning full
143  o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate  o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
144    new output (all 4 tests) using default rotationPeriod.    new output (all 4 tests) using default rotationPeriod.
145    o pkg KPP:
146      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
147      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
148        and normal grid from 1 to Nr)
149  o Fix computations of L4rdt in mom_calc_visc.F  o Fix computations of L4rdt in mom_calc_visc.F
150  o eesupp:  o eesupp:
151    new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):    new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
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