(cherry picked from commit a7413073)

Philippe 29/08/2023: OpenACC: work around for a problem with NVHPC 23.7 (not present in older versions)

(cherry picked from commit ce39d7dc)

Juan 25/07/2023:ZSOLVER/advection_metsv.f90 , add cpp key MPIVIDE to compile with gfortran+GPU nvidia or amd

Philippe 26/06/2023: ice4_sedimentation_split: remove a DO CONCURRENT because of a reduction in loop (wrong reults with NVHPC 23.5)

(cherry picked from commit ad799fd0)

(cherry picked from commit 18a466fd)

Juan 19/06/2023:rain_ice_sedimentation_split.f90, Again SegFault at execition with CRAY ftn -> deactivate mnh_expand_array for CRAY ftn !!!

Juan 19/06/2023:rain_ice_sedimentation_split.f90, For pref PB with nvhpc , reintroduce mnh_expand_array & MNH_MEM_GET(ZRTMIN...) + replace data create -> present

Juan 16/06/2023:ZSOLVER/* , For Nvhpc , remove duplicate "!$acc loop" introduced by use of mnh_do_conncurrent

Juan 16/06/2023:ZSOLVER/pressurez.f90 , For CRAY ftn ,transform  mnh_do_concurrent -> DO CONCURRENNT to avoid serialisation of BR_ call

Juan 16/06/2023:MNH/* , For Nvhpc , remove duplicate "!$acc loop" introduced by use of mnh_do_conncurrent

Juan 16/06/2023:rain_ice_sedimentation_split.f90, Strange Cray SegFault -> replace mnh_do_concurrent -> array syntax

Juan 15/06/2023:ZSOLVER/turb.f90, For gfortran+openacc doesnt allo EXIT on acc loop -> replace with GZD logical test

Juan 15/06/2023:ZSOLVER/rain_ice_red.f90, For gfortran+openacc compiler SEGFAULT -> split in small acc kernels

Juan 15/06/2023:ZSOLVER/get_halo.f90, For gfortran+openacc, allocatable array not allowed in Gpu direct/host_data use_device() => TEMPORARY deactivate #define MNH_GPUDIRECT

Juan 15/06/2023:ZSOLVER/gdiv.f90,pressurez.f90, For gfortran+openacc ,replace DO CONCURRENT -> mnh_do_concurrent

Juan 13/06/2023:ice4_sedimentation_split.f90 , For gfortran+openacc ,replace DO CONCURRENT -> mnh_do_concurrent

Juan 13/02/2023: MNH modif for compile with sourceryg/2022.09-7-orig+OPENACC + optimization for CRAY ftn

Juan 20/03/2023:ZSOLVER/turb_hor_uv.f90, Bypass Nvhpc BUG <->  zflx partially present/error 700: Illegal address during kernel execution <-> remove "acc loop ..." & replace DO CONCURRENT -> mnh_do_conccurent , better perf

Juan 17/03/2023:ZSOLVER/multigrid.f90,finalize_mnh.f90, Managed output in timing.txt , verbose=1/residual , verbose=10/timing by level, verbose=100/timing by iteration

Juan 16/03/2023:ZSOLVER/p_abs.f90, replace DO CONCURRENT -> mnh_do_conccurent , better perf with acc parallel

Juan 16/03/2023:ZSOLVER/discretisation.f90, Little OpenAcc Typo detected with NVHPC, missing & <-> continuation line at end of acc parallel

Juan 16/03/2023:ZSOLVER/communication.f90, Cray OPENACC Opt, pass ztab* by args + dim in boundary_mnh/_dim

Juan 16/03/2023:ZSOLVER/discretisation.f90, Cray OPENACC Opt, pass ztab* by args + dim in calculate_residual_mnh/_dim

Juan 16/03/2023:ZSOLVER/contrav.f90, Cray OPENACC Opt, pass ztab* by args + dim in contrav_device/_dim

Juan 16/03/2023:ZSOLVER/discretisation.f90, Cray OPENACC Opt, pass ztab* by args + dim in apply_mnh/_dim