[MITgcm-devel] lab_sea salt_plume

[Jean-Michel Campin]

Hi Dimitris,

It's about this new test within lab_sea dir. 
that you added:

I noticed that with mpi, the results are quiet different from
the standard output (or with g77 on faulks):
For instance, on aces with g77, we only get 1 digit of matching
for cg2d, which is much worse than any other experiment:
http://mitgcm.org/testing/results/2007_12/tr_aces-gnu_20071226_0/summary.txt

And cg2d_ini_res (but uvel, theta behave similarly) is already
different at the 2nd iteration:
1 cg2d : g77+mpi on aces    output.salt_plume.txt
   1  1.62385282835673E+00  1.62385282835673E+00 :  16
   2  4.85548954979253E-01  4.68227543998213E-01 :   1
   3  2.45622971174368E-01  2.25845413764413E-01 :   1
   4  1.63522154679596E-01  1.43321071390522E-01 :   1
   5  1.20614641817605E-01  1.10517741406029E-01 :   1
   6  9.70754606193202E-02  8.54199023969107E-02 :   1
   7  8.69449945190776E-02  7.15457138959820E-02 :   1
   8  7.75254707036916E-02  6.36283224074781E-02 :   1
   9  6.97929202192410E-02  5.94210606948534E-02 :   1
  10  7.07050338339757E-02  5.84864259736977E-02 :   1

It could be worth to check more carefully the tiles computation
(in salt_plume pkg ?): the mpi run has only 1 tile per processor
is more likely to be right.

Jean-Michel