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Changeset 9830 for branches/UKMO/dev_r5518_GO6_package/NEMOGCM/NEMO/OPA_SRC/DIA/diaptr.F90 – NEMO

2018-06-22T11:39:58+02:00 (5 years ago)

Merge revisions 9607:9721 of/branches/UKMO/dev_r5518_GO6_diag_bitcomp
into GO6 package branch.

This change ensures most 2D and 3D diagnostics produced by NEMO and MEDUSA
are bit reproducible on different PE decompositions.

Command used:
svn merge -r 9607:9721 svn+ssh://

Met Office GMED ticket 389 refers.

This change applies a mask to all duplicate grid points
output on diagnistic grids for T, U and V points. i.e. it masks
any wrap columns and duplicated grid points across the N-fold.
Fields affected are all "standard" NEMO diagnostics (scalar and
diaptr diagnostics are not on "normal" grids).

It also introduces some corrections/initialisations to achieve
PE decomposition bit comparison.

Most 2D or 3D fields are now bit comparable on different PE decompositions.
Only diaptr diagnostics can not be guaranteed bit reproducible
(due to their method of computation).

This change does nothing to CICE output.

Model evolution is unaffected.

1 edited


  • branches/UKMO/dev_r5518_GO6_package/NEMOGCM/NEMO/OPA_SRC/DIA/diaptr.F90

    r9207 r9830  
    103103      ! 
     104      z2d(:,:) = 0._wp 
    104105      z3d(:,:,:) = 0._wp 
    105106      IF( PRESENT( pvtr ) ) THEN 
    246247         ! 
    247248         IF( iom_use("zotemglo") ) THEN    ! i-mean i-k-surface  
     249            zmask(:,:,:) = 0._wp 
     250            zts(:,:,:,:) = 0._wp 
    248251            DO jk = 1, jpkm1 
    249252               DO jj = 1, jpj 
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