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1.16 -
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Fri Aug 22 14:30:41 2003 UTC
(21 years, 1 month ago)
by
edhill
Branch:
MAIN
CVS Tags:
branch-netcdf,
branchpoint-genmake2,
checkpoint51f_post,
checkpoint51g_post,
checkpoint51h_pre,
checkpoint51i_post,
checkpoint51i_pre,
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checkpoint55,
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checkpoint55c_post,
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checkpoint55d_pre,
checkpoint55e_post,
checkpoint55f_post,
checkpoint55g_post,
checkpoint55h_post,
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checkpoint56,
checkpoint56a_post,
checkpoint56b_post,
checkpoint56c_post,
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checkpoint57c_post,
checkpoint57c_pre,
checkpoint57d_post,
checkpoint57e_post,
ecco_c52_e35,
eckpoint57e_pre,
hrcube4,
hrcube5,
hrcube_1,
hrcube_2,
hrcube_3
Branch point for:
branch-genmake2,
branch-nonh,
checkpoint51n_branch,
netcdf-sm0,
tg2-branch
Changes since
1.15: +50 -1 lines
Diff to
previous 1.15
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selected 1.1
minor cleanup
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1.15 -
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Wed May 5 18:32:33 1999 UTC
(25 years, 4 months ago)
by
adcroft
Branch:
MAIN
CVS Tags:
branch-atmos-merge-freeze,
branch-atmos-merge-phase1,
branch-atmos-merge-phase2,
branch-atmos-merge-phase3,
branch-atmos-merge-phase4,
branch-atmos-merge-phase5,
branch-atmos-merge-phase6,
branch-atmos-merge-phase7,
branch-atmos-merge-shapiro,
branch-atmos-merge-start,
branch-atmos-merge-zonalfilt,
branch-exfmods-tag,
c37_adj,
checkpoint21,
checkpoint22,
checkpoint23,
checkpoint24,
checkpoint25,
checkpoint26,
checkpoint27,
checkpoint28,
checkpoint29,
checkpoint30,
checkpoint31,
checkpoint32,
checkpoint33,
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checkpoint35,
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checkpoint41,
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Branch point for:
branch-atmos-merge,
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pre38,
release1,
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release1_coupled,
release1_final
Changes since
1.14: +9 -28 lines
Diff to
previous 1.14
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to
selected 1.1
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...
Revision
1.6 -
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Mon Apr 27 04:39:41 1998 UTC
(26 years, 5 months ago)
by
cnh
Branch:
MAIN
CVS Tags:
checkpoint1,
checkpoint2,
checkpoint3,
checkpoint4,
checkpoint5,
checkpoint6,
checkpoint7,
kloop1,
kloop2,
redigm
Branch point for:
checkpoint7-4degree-ref
Changes since
1.5: +10 -4 lines
Diff to
previous 1.5
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to
selected 1.1
Added note for WWW refs to vendor material
Revision
1.1 -
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Fri Apr 24 02:49:16 1998 UTC
(26 years, 5 months ago)
by
cnh
Branch:
MAIN
Added Getting Started file doc/README
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