Annotation of /MITgcm_contrib/eh3/llc/ecco-godae/README


LAT-LON-Polar-Cap setup
-----------------------
ed@eh3.com, cnh@mit.edu, heimbach@mit.edu

Setup code/, input/
-------------------
Note that the *.mitgrid files must be named using the following pattern
or they will not be read correctly by MITgcm:

  cd run
  for i in 1 2 3 4 5 6; do 
    ln -s ../input/llc_p90_${i}.mitgrid tile00${i}.mitgrid
  done

Change topology:
 
cd MITgcm/utils/exch2/matlab-topology-generator/
 
modify matlab script driver_llc.m
line
nr = 360; ng = 90; nb = 90; tnx=90;tny=90;
to (e.g.)
nr = 360; ng = 90; nb = 90; tnx=30;tny=30;
run script
 
This generates routine and header
w2_e2setup.F
W2_EXCH2_TOPOLOGY.h
which need to go in code/

Accordingly, bathy.0??.0??.data need changing.

N.B. Domain decomposition nPy not active with exch2, i.e.
possible decomps are (for orig. with 17 tiles):
sNx = 90 30 90  30
sNy = 90 30 90  30
nSx = 17 17  1   1
nSy =  1  1  1   1
nPx =  1  9 17 153
nPy =  1  1  1   1

I've generated artificial tile #18 with all zeros
blanklist.txt needs to be generated by hand.
Not clear how many procs to invoke in presence of blank list.

Setup code_15lev/, input_15lev/
-------------------------------

* Real bathymetry, 15 vertical levels,
* monthly climatological forcing via exf package, uses
  4x4 deg. fields with on-the-fly interpolation
* Bathymetry is generated via script ... in ...
* Initial conditions for T, S are generated via script ... in ...

All input fields can be downloaded using script input_15lev/prepare_run
(which also contains link pattern to standard tile00${i}.mitgrid fields),
then link to run directory.
1	edhill	1.1
2	heimbach	1.2	LAT-LON-Polar-Cap setup
3			-----------------------
4			ed@eh3.com, cnh@mit.edu, heimbach@mit.edu
5
6			Setup code/, input/
7			-------------------
8	edhill	1.1	Note that the *.mitgrid files must be named using the following pattern
9			or they will not be read correctly by MITgcm:
10
11			cd run
12	heimbach	1.3	for i in 1 2 3 4 5 6; do
13	edhill	1.1	ln -s ../input/llc_p90_${i}.mitgrid tile00${i}.mitgrid
14			done
15
16	heimbach	1.3	Change topology:
17
18			cd MITgcm/utils/exch2/matlab-topology-generator/
19
20			modify matlab script driver_llc.m
21			line
22			nr = 360; ng = 90; nb = 90; tnx=90;tny=90;
23			to (e.g.)
24			nr = 360; ng = 90; nb = 90; tnx=30;tny=30;
25			run script
26
27			This generates routine and header
28			w2_e2setup.F
29			W2_EXCH2_TOPOLOGY.h
30			which need to go in code/
31
32			Accordingly, bathy.0??.0??.data need changing.
33
34			N.B. Domain decomposition nPy not active with exch2, i.e.
35			possible decomps are (for orig. with 17 tiles):
36			sNx = 90 30 90 30
37			sNy = 90 30 90 30
38			nSx = 17 17 1 1
39			nSy = 1 1 1 1
40			nPx = 1 9 17 153
41			nPy = 1 1 1 1
42
43			I've generated artificial tile #18 with all zeros
44			blanklist.txt needs to be generated by hand.
45			Not clear how many procs to invoke in presence of blank list.
46
47	heimbach	1.2	Setup code_15lev/, input_15lev/
48			-------------------------------
49
50	heimbach	1.3	* Real bathymetry, 15 vertical levels,
51			* monthly climatological forcing via exf package, uses
52			4x4 deg. fields with on-the-fly interpolation
53	heimbach	1.2	* Bathymetry is generated via script ... in ...
54			* Initial conditions for T, S are generated via script ... in ...
55
56			All input fields can be downloaded using script input_15lev/prepare_run
57			(which also contains link pattern to standard tile00${i}.mitgrid fields),
58			then link to run directory.