[360] | 1 | MODULE hevi_scheme_mod |
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| 2 | USE prec |
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| 3 | USE domain_mod |
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| 4 | USE field_mod |
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[362] | 5 | USE euler_scheme_mod |
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[732] | 6 | USE caldyn_vars_mod |
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[360] | 7 | IMPLICIT NONE |
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| 8 | PRIVATE |
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| 9 | |
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| 10 | REAL(rstd), SAVE :: wj(3), bjl(3,3), cjl(3,3), taujj(3) |
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| 11 | REAL(rstd), PARAMETER, DIMENSION(3) :: zero = (/0.,0.,0./) |
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| 12 | |
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[950] | 13 | PUBLIC :: set_coefs_ark23, set_coefs_ark33, set_coefs_ark11, hevi_scheme |
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[360] | 14 | |
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| 15 | CONTAINS |
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| 16 | |
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| 17 | SUBROUTINE set_coefs_ark23(dt) |
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| 18 | ! ARK2 scheme by Giraldo, Kelly, Constantinescu 2013 |
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| 19 | ! See Weller et al., 2013 - ARK2 scheme Fig. 2 |
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| 20 | REAL(rstd) :: dt |
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[371] | 21 | REAL(rstd), PARAMETER :: delta=.5/SQRT(2.), gamma=1.-2.*delta |
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| 22 | ! REAL(rstd), PARAMETER :: alpha=(3.+SQRT(8.))/6. ! original value in GKC2013 |
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| 23 | REAL(rstd), PARAMETER :: alpha=0.7 |
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[360] | 24 | REAL(rstd), PARAMETER, DIMENSION(3) :: wj = (/delta,delta,gamma/) |
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| 25 | CALL set_coefs_hevi(dt, & |
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| 26 | (/ zero, (/2.*gamma,0.,0./), (/1-alpha,alpha,0./), wj /), & |
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| 27 | (/ zero, (/gamma,gamma,0./), wj, wj /) ) |
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| 28 | END SUBROUTINE set_coefs_ark23 |
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| 29 | |
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| 30 | SUBROUTINE set_coefs_ark33(dt) |
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| 31 | ! Fully-explicit RK3 scheme disguised as ARK |
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| 32 | REAL(rstd) :: dt |
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[366] | 33 | CALL set_coefs_rk(dt, (/ zero, (/.5,0.,0./), (/-1.,2.,0./), (/1./6.,2./3.,1./6./) /) ) |
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[360] | 34 | END SUBROUTINE set_coefs_ark33 |
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| 35 | |
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[950] | 36 | SUBROUTINE set_coefs_ark11(dt) |
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| 37 | ! Euler scheme disguised as ARK for development purposes |
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| 38 | REAL(rstd) :: dt |
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| 39 | CALL set_coefs_rk(dt, (/ zero, (/1.,0.,0./), (/0.,0.,0./), (/0./0.,0./0.,0./) /) ) |
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| 40 | END SUBROUTINE set_coefs_ark11 |
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| 41 | |
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[366] | 42 | SUBROUTINE set_coefs_rk(dt, ajl) |
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| 43 | REAL(rstd) :: dt, ajl(3,4) |
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| 44 | CALL set_coefs_hevi(dt,ajl,ajl) |
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| 45 | END SUBROUTINE set_coefs_rk |
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| 46 | |
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[360] | 47 | SUBROUTINE set_coefs_hevi(dt, ajl_slow, ajl_fast) |
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| 48 | REAL(rstd) :: dt, ajl_slow(3,4), ajl_fast(3,4) ! fast/slow Butcher tableaus |
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| 49 | INTEGER :: j |
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[950] | 50 | DO j=1,nb_stage |
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[360] | 51 | bjl(:,j) = dt*(ajl_slow(:,j+1)-ajl_slow(:,j)) |
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| 52 | cjl(:,j) = dt*(ajl_fast(:,j+1)-ajl_fast(:,j)) |
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| 53 | taujj(j) = dt*ajl_fast(j,j) |
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| 54 | END DO |
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[950] | 55 | wj=dt*ajl_slow(:,nb_stage+1) |
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[360] | 56 | END SUBROUTINE set_coefs_hevi |
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| 57 | |
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| 58 | SUBROUTINE HEVI_scheme(it, fluxt_zero) |
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| 59 | USE time_mod |
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| 60 | USE disvert_mod |
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[361] | 61 | USE caldyn_hevi_mod |
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[480] | 62 | USE omp_para |
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| 63 | USE checksum_mod |
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[360] | 64 | LOGICAL :: fluxt_zero(ndomain) ! set to .TRUE. to start accumulating fluxes in time |
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| 65 | INTEGER :: it,j,l, ind |
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| 66 | REAL(rstd),POINTER :: hflux(:,:),wflux(:,:),hfluxt(:,:),wfluxt(:,:) |
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| 67 | |
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[529] | 68 | CALL legacy_to_DEC(f_ps, f_u) |
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[360] | 69 | DO j=1,nb_stage |
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[361] | 70 | CALL caldyn_hevi((j==1) .AND. (MOD(it,itau_out)==0), taujj(j), & |
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[360] | 71 | f_phis, f_ps,f_mass,f_theta_rhodz,f_u,f_q, & |
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[366] | 72 | f_W, f_geopot, f_hflux, f_wflux, & |
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[360] | 73 | f_dps_slow(:,j), f_dmass_slow(:,j), f_dtheta_rhodz_slow(:,j), & |
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[366] | 74 | f_du_slow(:,j), f_du_fast(:,j), & |
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| 75 | f_dPhi_slow(:,j), f_dPhi_fast(:,j), & |
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| 76 | f_dW_slow(:,j), f_dW_fast(:,j) ) |
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[361] | 77 | ! accumulate mass fluxes for transport scheme |
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[480] | 78 | |
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[360] | 79 | DO ind=1,ndomain |
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| 80 | IF (.NOT. assigned_domain(ind)) CYCLE |
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| 81 | CALL swap_dimensions(ind) |
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| 82 | hflux=f_hflux(ind); hfluxt=f_hfluxt(ind) |
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| 83 | wflux=f_wflux(ind); wfluxt=f_wfluxt(ind) |
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| 84 | CALL accumulate_fluxes(hflux,wflux, hfluxt,wfluxt, wj(j), fluxt_zero(ind)) |
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| 85 | END DO |
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| 86 | ! update model state |
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| 87 | DO l=1,j |
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| 88 | IF(caldyn_eta==eta_mass) THEN |
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| 89 | CALL update_2D(bjl(l,j), f_ps, f_dps_slow(:,l)) |
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| 90 | ELSE |
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[387] | 91 | CALL update_3D(bjl(l,j), f_mass, f_dmass_slow(:,l)) |
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[360] | 92 | END IF |
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[387] | 93 | CALL update_4D(bjl(l,j), f_theta_rhodz, f_dtheta_rhodz_slow(:,l)) |
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| 94 | CALL update_3D(bjl(l,j), f_u, f_du_slow(:,l)) |
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| 95 | CALL update_3D(cjl(l,j), f_u, f_du_fast(:,l)) |
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[366] | 96 | IF(.NOT. hydrostatic) THEN |
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[387] | 97 | CALL update_3D(bjl(l,j), f_W, f_dW_slow(:,l)) |
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| 98 | CALL update_3D(cjl(l,j), f_W, f_dW_fast(:,l)) |
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| 99 | CALL update_3D(bjl(l,j), f_geopot, f_dPhi_slow(:,l)) |
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| 100 | CALL update_3D(cjl(l,j), f_geopot, f_dPhi_fast(:,l)) |
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[366] | 101 | END IF |
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[480] | 102 | !$OMP BARRIER |
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[360] | 103 | END DO |
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| 104 | END DO |
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[529] | 105 | CALL DEC_to_legacy(f_ps, f_u) |
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[360] | 106 | END SUBROUTINE HEVI_scheme |
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| 107 | |
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[387] | 108 | SUBROUTINE update_4D(w, f_y, f_dy) |
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[360] | 109 | USE dimensions |
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[387] | 110 | USE grid_param, ONLY : nqdyn |
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[360] | 111 | REAL(rstd) :: w |
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| 112 | TYPE(t_field) :: f_y(:), f_dy(:) |
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[387] | 113 | REAL(rstd), POINTER :: y(:,:,:), dy(:,:,:) |
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| 114 | INTEGER :: ind, iq |
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| 115 | IF(w /= 0.) THEN |
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| 116 | DO ind=1,ndomain |
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| 117 | IF (.NOT. assigned_domain(ind)) CYCLE |
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| 118 | CALL swap_dimensions(ind) |
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| 119 | dy=f_dy(ind); y=f_y(ind) |
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| 120 | DO iq=1,nqdyn |
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| 121 | CALL compute_update_3D(w,y(:,:,iq),dy(:,:,iq)) |
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| 122 | END DO |
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| 123 | ENDDO |
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| 124 | END IF |
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| 125 | END SUBROUTINE update_4D |
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| 126 | |
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| 127 | SUBROUTINE update_3D(w, f_y, f_dy) |
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| 128 | USE dimensions |
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| 129 | REAL(rstd) :: w |
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| 130 | TYPE(t_field) :: f_y(:), f_dy(:) |
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[360] | 131 | REAL(rstd), POINTER :: y(:,:), dy(:,:) |
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| 132 | INTEGER :: ind |
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[362] | 133 | IF(w /= 0.) THEN |
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| 134 | DO ind=1,ndomain |
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| 135 | IF (.NOT. assigned_domain(ind)) CYCLE |
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| 136 | CALL swap_dimensions(ind) |
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| 137 | dy=f_dy(ind); y=f_y(ind) |
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[387] | 138 | CALL compute_update_3D(w,y,dy) |
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[362] | 139 | ENDDO |
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| 140 | END IF |
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[387] | 141 | END SUBROUTINE update_3D |
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[360] | 142 | |
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[387] | 143 | SUBROUTINE compute_update_3D(w, y, dy) |
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[360] | 144 | USE omp_para |
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| 145 | USE disvert_mod |
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| 146 | REAL(rstd) :: w |
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| 147 | REAL(rstd) :: y(:,:), dy(:,:) |
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| 148 | INTENT(INOUT) :: y |
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| 149 | INTENT(IN) :: dy |
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[950] | 150 | INTEGER :: l, l_begin, l_end |
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| 151 | IF(grid_type==grid_ico) THEN |
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| 152 | l_begin = ll_begin |
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[951] | 153 | l_end = ll_end |
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[950] | 154 | ELSE ! unstructured : FIXME OpenMP |
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| 155 | l_begin = 1 |
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| 156 | l_end = SIZE(y,2) |
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| 157 | END IF |
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| 158 | DO l=l_begin,l_end |
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[360] | 159 | y(:,l)=y(:,l)+w*dy(:,l) |
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| 160 | ENDDO |
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[387] | 161 | END SUBROUTINE compute_update_3D |
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[360] | 162 | |
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| 163 | SUBROUTINE update_2D(w, f_y, f_dy) |
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[480] | 164 | USE omp_para |
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[360] | 165 | REAL(rstd) :: w |
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| 166 | TYPE(t_field) :: f_y(:), f_dy(:) |
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| 167 | REAL(rstd), POINTER :: y(:), dy(:) |
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| 168 | INTEGER :: ind |
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| 169 | DO ind=1,ndomain |
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| 170 | IF (.NOT. assigned_domain(ind)) CYCLE |
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| 171 | dy=f_dy(ind); y=f_y(ind) |
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[950] | 172 | IF (is_omp_level_master) CALL compute_update_2D(w,y,dy) ! FIXME OpenMP+unstructured |
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[360] | 173 | ENDDO |
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| 174 | END SUBROUTINE update_2D |
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| 175 | |
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| 176 | SUBROUTINE compute_update_2D(w, y, dy) |
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| 177 | REAL(rstd) :: w, y(:), dy(:) |
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| 178 | INTENT(INOUT) :: y |
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| 179 | INTENT(IN) :: dy |
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| 180 | y(:)=y(:)+w*dy(:) |
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| 181 | END SUBROUTINE compute_update_2D |
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| 182 | |
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| 183 | END MODULE hevi_scheme_mod |
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