[MITgcm-cvs] MITgcm/doc CVS Commit

[Martin Losch]

Update of /u/gcmpack/MITgcm/doc
In directory forge:/tmp/cvs-serv22885/doc

Modified Files:
	tag-index 
Log Message:
Add this:
o pkg/seaice: more clean up
  - rename TAF common block tapes to be more consistent and remove
    unnecessary duplicates
  - add store directives to remove more recomputations, 
    but use smaller tapes (and adjust keys) when
    SEAICE_LSR_ADJOINT_ITER is undefined. The idea behind this flag is
    to reduce the memory footprint when the adjoint of the LSR is not
    required. As of now, defining the flag SEAICE_LSR_ADJOINT_ITER
    increase 4 common block tapes for 2D field by a factor of
    SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h). For experiment
    offline_exf_seaice, this means on a linux box with gfortran nearly
    a factor of 10 (but keep in mind there is mostly seaice code
    in this experiment)
    > size mitgcmuv_ad
    text    data        bss     dec 	   hex	
    5100659 1216  220458952  225560827  d71c8fb	
    5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
    but only a moderate increase of 36% for global_ocean.cs32x15
    text    data        bss     dec        hex
    6695027 1648 1014578664 1021275339 3cdf6ccb
    6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
  - note: there are still recomputations in global_ocean.cs32x15 and
    the gradient agreement changes (gets a little worse)
  - in general, the AD gradients still are wrong