Ignore:
Timestamp:
2017-03-09T11:38:31+01:00 (4 years ago)
Author:
frrh
Message:

Apply optimisations to various areas of code replacing the use of
allocated pointers with straightforward direct ALLOCATE and DEALLOCATE
operations.

These optimisations largely have an impact in models featuring MEDUSA,
i.e. those with significant numbers of tracers, although they are
expected to have a small impact in all configurations.

Code developed and tested in NEMO branch branches/UKMO/dev_r5518_optim_GO6_alloc
Tested in stand-alone GO6-GSI8, GO6-GSI8-MEDUSA and UKESM coupled models.
NEMO ticket #1821 documents this change further.

File:
1 edited

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  • branches/UKMO/dev_r5518_GO6_package/NEMOGCM/NEMO/OPA_SRC/SOL/solpcg.F90

    r6486 r7771  
    9393      REAL(wp) ::   zgcad        ! temporary scalars 
    9494      REAL(wp), DIMENSION(2) ::   zsum 
    95       REAL(wp), POINTER, DIMENSION(:,:) ::   zgcr 
     95      REAL(wp), ALLOCATABLE, DIMENSION(:,:) ::   zgcr 
    9696      !!---------------------------------------------------------------------- 
    9797      ! 
    9898      IF( nn_timing == 1 )  CALL timing_start('sol_pcg') 
    9999      ! 
    100       CALL wrk_alloc( jpi, jpj, zgcr ) 
     100      ALLOCATE( zgcr(1:jpi,1:jpj) ) 
    101101      ! 
    102102      ! Initialization of the algorithm with standard PCG 
     
    210210      CALL lbc_lnk( gcx, c_solver_pt, 1. )      ! Output in gcx with lateral b.c. applied 
    211211      !  
    212       CALL wrk_dealloc( jpi, jpj, zgcr ) 
     212      DEALLOCATE ( zgcr ) 
    213213      ! 
    214214      IF( nn_timing == 1 )  CALL timing_stop('sol_pcg') 
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