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Revision 1.2 - (show annotations) (download)
Wed May 5 18:32:36 1999 UTC (22 years ago) by adcroft
Branch: MAIN
CVS Tags: HEAD
Changes since 1.1: +0 -0 lines
FILE REMOVED
Implemented new I/O package (mdsio.F). This package does parallel
I/O in much the same way as dfile.F used to except it uses "direct
access" rather than (f77) unformatted sequential access.

Problems with dfile.F package included:
  o unnecessary memory use (each process had two global sized buffers)
  o inability to read the files it had written without post-processing
  o "tiled" files were tiled by process/thread rather than actual tiles
  o created huge numbers of files with no alternatives

Features of the mdsio.F package:
  o direct-access binary writes
  o no excessive memory use
  o ability to read/write from multiple record files
  o "tiled" files are based on "WRAPPER" tiles so that the number
    and content of files is independent of the number of threads
    and/or processes
  o option to create single "global" files rather than "tiled" files
  o ability to read both "global" and "tiled" files
    [Caveat: the tiling of files must match the model tiles]
  o checkpoints now use a single file per model section
    ie.  one file for the hydrostatic model core, one file
    for the non-hydrostatic extensions and one file for the C-D
    extensions
  o the mid-level I/O routines now is broken into more source files
    read_write_fld.F supplies basic I/O routines with the same interface
                     as the original I/O package
    read_write_rec.F supplies I/O routines which allow multiple records
    write_state.F    writes the model state
    checkpoint.F     supplies the read/write checkpoint routines

All the example input data has had to be modified to be direct-access.
Otherwise only routines that used I/O have been affected and not
all of those have been due to the continuity of arguments in
the read_write_fld.F routines.

What needs to be done?  We have to create a suite of conversion
utilities for users with old-style data. Also supply the option
for using old-style I/O, not just for die-hards but for reading
data too extensive to be converted. And more...

1 # ====================
2 # | Model parameters |
3 # ====================
4 #
5 # Continuous equation parameters
6 &PARM01
7 tRef= 16.0 , 15.2 , 14.5 , 13.9 , 13.3 ,
8 12.4 , 11.3 , 9.9 , 8.4 , 6.7 ,
9 5.2 , 3.8 , 2.9 , 2.3 , 1.8 ,
10 1.5 , 1.1 , 0.8 , 0.66, 0.63,
11 sRef= 34.65, 34.75, 34.82, 34.87, 34.90,
12 34.90, 34.86, 34.78, 34.69, 34.60,
13 34.58, 34.62, 34.68, 34.72, 34.73,
14 34.74, 34.73, 34.73, 34.72, 34.72,
15 viscAp=9.619760940944400e+04,
16 viscAh=5.E5,
17 no_slip_sides=.FALSE.,
18 no_slip_bottom=.TRUE.,
19 diffKhT=1.E3,
20 diffKpT=2.885928282283320e+03,
21 diffKhS=1.E3,
22 diffKpS=2.885928282283320e+03,
23 beta=1.E-11,
24 f0=1.e-4,
25 tAlpha=2.E-4,
26 sBeta =7.4E-4,
27 gravity=9.81,
28 rigidLid=.FALSE.,
29 implicitFreeSurface=.TRUE.,
30 eosType='LINEAR',
31 GMkBackground=0000.d0,
32 readBinaryPrec=32,
33 &
34
35 # Elliptic solver parameters
36 &PARM02
37 cg2dMaxIters=1000,
38 cg2dTargetResidual=1.E-13,
39 &
40
41 # Time stepping parameters
42 &PARM03
43 startTime=0,
44 #endTime=3110400000,
45 endTime=2808000.,
46 deltaTmom=2400.0,
47 tauCD=321428.,
48 deltaTtracer=108000.0,
49 deltaTClock =108000.0,
50 abEps=0.1,
51 pChkptFreq=0.0,
52 chkptFreq=0.0,
53 dumpFreq=2592000.0,
54 tauThetaClimRelax=2592000.0,
55 tauSaltClimRelax=2592000.0,
56 &
57
58 # Gridding parameters
59 &PARM04
60 usingCartesianGrid=.FALSE.,
61 usingSphericalPolarGrid=.TRUE.,
62 delp = 4.904019000000000e+05,
63 4.904019000000000e+05,
64 5.394420900000001e+05,
65 5.884822800000000e+05,
66 6.375224700000000e+05,
67 6.865626600000000e+05,
68 7.846430400000000e+05,
69 9.317636100000000e+05,
70 1.176964560000000e+06,
71 1.520245890000000e+06,
72 1.961607600000000e+06,
73 2.550089880000000e+06,
74 3.138572160000000e+06,
75 3.923215200000000e+06,
76 4.707858240000000e+06,
77 5.590581660000000e+06,
78 6.424264890000000e+06,
79 7.110827550000000e+06,
80 7.601229449999999e+06,
81 7.993550970000000e+06,
82 phiMin=-80.,
83 delY=40*4,
84 delX=90*4,
85 &
86
87 # Input datasets
88 &PARM05
89 bathyFile='topog-p',
90 hydrogThetaFile='thetaLevCli',
91 hydrogSaltFile='saltLevCli',
92 zonalWindFile='windx',
93 meridWindFile='windy',
94 thetaClimFile='SST.bin'
95 saltClimFile='SSS.bin'
96 &

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