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Enable GPU execution of atm_bdy_adjust_dynamics_speczone_tend via OpenACC #1268

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Enable GPU execution of atm_bdy_adjust_dynamics_speczone_tend via OpenACC #1268

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24 changes: 23 additions & 1 deletion src/core_atmosphere/dynamics/mpas_atm_time_integration.F
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Original file line number Diff line number Diff line change
Expand Up @@ -6505,9 +6505,19 @@ subroutine atm_bdy_adjust_dynamics_speczone_tend( tend, mesh, config, nVertLevel
call mpas_pool_get_array(mesh, 'bdyMaskCell', bdyMaskCell)
call mpas_pool_get_array(mesh, 'bdyMaskEdge', bdyMaskEdge)
call mpas_pool_get_array(tend, 'rt_diabatic_tend', rt_diabatic_tend)


MPAS_ACC_TIMER_START('atm_bdy_adjust_dynamics_speczone_tend [ACC_data_xfer]')
!$acc enter data copyin(tend_ru,tend_rho,tend_rt,tend_rw, &
!$acc rt_diabatic_tend) &
!$acc copyin(rho_driving_tend,rt_driving_tend, &
!$acc ru_driving_tend)
MPAS_ACC_TIMER_STOP('atm_bdy_adjust_dynamics_speczone_tend [ACC_data_xfer]')

!$acc parallel default(present)
!$acc loop gang worker
do iCell = cellSolveStart, cellSolveEnd
if(bdyMaskCell(iCell) > nRelaxZone) then
!$acc loop vector
do k=1, nVertLevels
tend_rho(k,iCell) = rho_driving_tend(k,iCell)
tend_rt(k,iCell) = rt_driving_tend(k,iCell)
Expand All @@ -6516,14 +6526,26 @@ subroutine atm_bdy_adjust_dynamics_speczone_tend( tend, mesh, config, nVertLevel
end do
end if
end do
!$acc end parallel

!$acc parallel default(present)
!$acc loop gang worker
do iEdge = edgeSolveStart, edgeSolveEnd
if(bdyMaskEdge(iEdge) > nRelaxZone) then
!$acc loop vector
do k=1, nVertLevels
tend_ru(k,iEdge) = ru_driving_tend(k,iEdge)
end do
end if
end do
!$acc end parallel

MPAS_ACC_TIMER_START('atm_bdy_adjust_dynamics_speczone_tend [ACC_data_xfer]')
!$acc exit data copyout(tend_ru,tend_rho,tend_rt, &
!$acc tend_rw,rt_diabatic_tend) &
!$acc delete(rho_driving_tend,rt_driving_tend, &
!$acc ru_driving_tend)
MPAS_ACC_TIMER_STOP('atm_bdy_adjust_dynamics_speczone_tend [ACC_data_xfer]')

end subroutine atm_bdy_adjust_dynamics_speczone_tend

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