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revision 1.2024 by heimbach, Tue Jul 15 23:07:57 2014 UTC revision 1.2025 by mlosch, Wed Jul 16 12:03:54 2014 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: more clean up
8      - rename TAF common block tapes to be more consistent and remove
9        unnecessary duplicates
10      - add store directives to remove more recomputations,
11        but use smaller tapes (and adjust keys) when
12        SEAICE_LSR_ADJOINT_ITER is undefined. The idea behind this flag is
13        to reduce the memory footprint when the adjoint of the LSR is not
14        required. As of now, defining the flag SEAICE_LSR_ADJOINT_ITER
15        increase 4 common block tapes for 2D field by a factor of
16        SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h). For experiment
17        offline_exf_seaice, this means on a linux box with gfortran nearly
18        a factor of 10 (but keep in mind there is mostly seaice code
19        in this experiment)
20        > size mitgcmuv_ad
21        text    data        bss     dec        hex  
22        5100659 1216  220458952  225560827  d71c8fb
23        5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
24        but only a moderate increase of 36% for global_ocean.cs32x15
25        text    data        bss     dec        hex
26        6695027 1648 1014578664 1021275339 3cdf6ccb
27        6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
28      - note: there are still recomputations in global_ocean.cs32x15 and
29        the gradient agreement changes (gets a little worse)
30      - in general, the AD gradients still are wrong
31  o OpenAD  o OpenAD
32    - clean up code_oad/ directories somewhat by moving files    - clean up code_oad/ directories somewhat by moving files
33      dontCompile, dontTransform, keepOriginal to OAD_support/      dontCompile, dontTransform, keepOriginal to OAD_support/
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