| 1 | SUBROUTINE pres |
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| 2 | |
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| 3 | !------------------------------------------------------------------------------! |
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| 4 | ! Actual revisions: |
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| 5 | ! ----------------- |
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| 6 | ! |
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| 7 | ! |
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| 8 | ! Former revisions: |
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| 9 | ! ----------------- |
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| 10 | ! $Id: pres.f90 73 2007-03-20 08:33:14Z raasch $ |
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| 11 | ! RCS Log replace by Id keyword, revision history cleaned up |
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| 12 | ! |
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| 13 | ! Revision 1.25 2006/04/26 13:26:12 raasch |
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| 14 | ! OpenMP optimization (+localsum, threadsum) |
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| 15 | ! |
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| 16 | ! Revision 1.1 1997/07/24 11:24:44 raasch |
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| 17 | ! Initial revision |
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| 18 | ! |
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| 19 | ! |
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| 20 | ! Description: |
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| 21 | ! ------------ |
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| 22 | ! Compute the divergence of the provisional velocity field. Solve the Poisson |
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| 23 | ! equation for the perturbation pressure. Compute the final velocities using |
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| 24 | ! this perturbation pressure. Compute the remaining divergence. |
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| 25 | !------------------------------------------------------------------------------! |
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| 26 | |
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| 27 | USE arrays_3d |
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| 28 | USE constants |
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| 29 | USE control_parameters |
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| 30 | USE cpulog |
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| 31 | USE grid_variables |
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| 32 | USE indices |
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| 33 | USE interfaces |
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| 34 | USE pegrid |
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| 35 | USE poisfft_mod |
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| 36 | USE poisfft_hybrid_mod |
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| 37 | USE statistics |
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| 38 | |
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| 39 | IMPLICIT NONE |
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| 40 | |
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| 41 | INTEGER :: i, j, k, sr |
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| 42 | |
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| 43 | REAL :: localsum, threadsum |
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| 44 | |
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| 45 | REAL, DIMENSION(1:2) :: volume_flow_l, volume_flow_offset |
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| 46 | |
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| 47 | |
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| 48 | CALL cpu_log( log_point(8), 'pres', 'start' ) |
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| 49 | |
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| 50 | ! |
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| 51 | !-- Multigrid method needs additional grid points for the divergence array |
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| 52 | IF ( psolver == 'multigrid' ) THEN |
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| 53 | DEALLOCATE( d ) |
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| 54 | ALLOCATE( d(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) ) |
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| 55 | ENDIF |
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| 56 | |
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| 57 | ! |
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| 58 | !-- Compute the divergence of the provisional velocity field. |
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| 59 | CALL cpu_log( log_point_s(1), 'divergence', 'start' ) |
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| 60 | |
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| 61 | IF ( psolver == 'multigrid' ) THEN |
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| 62 | !$OMP PARALLEL DO SCHEDULE( STATIC ) |
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| 63 | DO i = nxl-1, nxr+1 |
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| 64 | DO j = nys-1, nyn+1 |
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| 65 | DO k = nzb, nzt+1 |
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| 66 | d(k,j,i) = 0.0 |
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| 67 | ENDDO |
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| 68 | ENDDO |
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| 69 | ENDDO |
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| 70 | ELSE |
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| 71 | !$OMP PARALLEL DO SCHEDULE( STATIC ) |
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| 72 | DO i = nxl, nxra |
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| 73 | DO j = nys, nyna |
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| 74 | DO k = nzb+1, nzta |
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| 75 | d(k,j,i) = 0.0 |
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| 76 | ENDDO |
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| 77 | ENDDO |
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| 78 | ENDDO |
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| 79 | ENDIF |
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| 80 | |
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| 81 | localsum = 0.0 |
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| 82 | threadsum = 0.0 |
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| 83 | |
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| 84 | #if defined( __ibm ) |
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| 85 | !$OMP PARALLEL PRIVATE (i,j,k) FIRSTPRIVATE(threadsum) REDUCTION(+:localsum) |
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| 86 | !$OMP DO SCHEDULE( STATIC ) |
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| 87 | DO i = nxl, nxr |
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| 88 | DO j = nys, nyn |
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| 89 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 90 | d(k,j,i) = ( u(k,j,i+1) - u(k,j,i) ) * ddx + & |
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| 91 | ( v(k,j+1,i) - v(k,j,i) ) * ddy + & |
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| 92 | ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) |
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| 93 | ENDDO |
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| 94 | ! |
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| 95 | !-- Additional pressure boundary condition at the bottom boundary for |
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| 96 | !-- inhomogeneous Prandtl layer heat fluxes and temperatures, respectively |
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| 97 | !-- dp/dz = -(dtau13/dx + dtau23/dy) + g*pt'/pt0. |
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| 98 | !-- This condition must not be applied at the start of a run, because then |
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| 99 | !-- flow_statistics has not yet been called and thus sums = 0. |
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| 100 | IF ( ibc_p_b == 2 .AND. sums(nzb+1,4) /= 0.0 ) THEN |
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| 101 | k = nzb_s_inner(j,i) |
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| 102 | d(k+1,j,i) = d(k+1,j,i) + ( & |
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| 103 | ( usws(j,i+1) - usws(j,i) ) * ddx & |
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| 104 | + ( vsws(j+1,i) - vsws(j,i) ) * ddy & |
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| 105 | - g * ( pt(k+1,j,i) - sums(k+1,4) ) / & |
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| 106 | sums(k+1,4) & |
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| 107 | ) * ddzw(k+1) |
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| 108 | ENDIF |
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| 109 | |
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| 110 | ! |
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| 111 | !-- Compute possible PE-sum of divergences for flow_statistics |
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| 112 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 113 | threadsum = threadsum + ABS( d(k,j,i) ) |
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| 114 | ENDDO |
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| 115 | |
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| 116 | ! |
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| 117 | !-- Velocity corrections are made with Euler step size. Right hand side |
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| 118 | !-- of Poisson equation has to be set appropriately |
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| 119 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 120 | d(k,j,i) = d(k,j,i) / dt_3d |
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| 121 | ENDDO |
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| 122 | |
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| 123 | ENDDO |
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| 124 | ENDDO |
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| 125 | |
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| 126 | localsum = localsum + threadsum |
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| 127 | !$OMP END PARALLEL |
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| 128 | #else |
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| 129 | IF ( ibc_p_b == 2 .AND. sums(nzb+1,4) /= 0.0 ) THEN |
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| 130 | !$OMP PARALLEL PRIVATE (i,j,k) |
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| 131 | !$OMP DO SCHEDULE( STATIC ) |
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| 132 | DO i = nxl, nxr |
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| 133 | DO j = nys, nyn |
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| 134 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 135 | d(k,j,i) = ( u(k,j,i+1) - u(k,j,i) ) * ddx + & |
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| 136 | ( v(k,j+1,i) - v(k,j,i) ) * ddy + & |
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| 137 | ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) |
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| 138 | ENDDO |
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| 139 | ENDDO |
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| 140 | ! |
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| 141 | !-- Additional pressure boundary condition at the bottom boundary for |
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| 142 | !-- inhomogeneous Prandtl layer heat fluxes and temperatures, respectively |
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| 143 | !-- dp/dz = -(dtau13/dx + dtau23/dy) + g*pt'/pt0. |
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| 144 | !-- This condition must not be applied at the start of a run, because then |
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| 145 | !-- flow_statistics has not yet been called and thus sums = 0. |
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| 146 | DO j = nys, nyn |
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| 147 | k = nzb_s_inner(j,i) |
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| 148 | d(k+1,j,i) = d(k+1,j,i) + ( & |
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| 149 | ( usws(j,i+1) - usws(j,i) ) * ddx & |
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| 150 | + ( vsws(j+1,i) - vsws(j,i) ) * ddy & |
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| 151 | - g * ( pt(k+1,j,i) - sums(k+1,4) ) / & |
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| 152 | sums(k+1,4) & |
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| 153 | ) * ddzw(k+1) |
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| 154 | ENDDO |
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| 155 | ENDDO |
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| 156 | !$OMP END PARALLEL |
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| 157 | |
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| 158 | ELSE |
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| 159 | |
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| 160 | !$OMP PARALLEL PRIVATE (i,j,k) |
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| 161 | !$OMP DO SCHEDULE( STATIC ) |
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| 162 | DO i = nxl, nxr |
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| 163 | DO j = nys, nyn |
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| 164 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 165 | d(k,j,i) = ( u(k,j,i+1) - u(k,j,i) ) * ddx + & |
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| 166 | ( v(k,j+1,i) - v(k,j,i) ) * ddy + & |
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| 167 | ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) |
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| 168 | ENDDO |
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| 169 | ENDDO |
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| 170 | ENDDO |
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| 171 | !$OMP END PARALLEL |
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| 172 | |
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| 173 | ENDIF |
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| 174 | |
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| 175 | ! |
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| 176 | !-- Compute possible PE-sum of divergences for flow_statistics |
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| 177 | !$OMP PARALLEL PRIVATE (i,j,k) FIRSTPRIVATE(threadsum) REDUCTION(+:localsum) |
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| 178 | !$OMP DO SCHEDULE( STATIC ) |
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| 179 | DO i = nxl, nxr |
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| 180 | DO j = nys, nyn |
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| 181 | DO k = nzb+1, nzt |
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| 182 | threadsum = threadsum + ABS( d(k,j,i) ) |
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| 183 | ENDDO |
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| 184 | ENDDO |
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| 185 | ENDDO |
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| 186 | localsum = localsum + threadsum |
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| 187 | !$OMP END PARALLEL |
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| 188 | |
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| 189 | ! |
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| 190 | !-- Velocity corrections are made with Euler step size. Right hand side |
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| 191 | !-- of Poisson equation has to be set appropriately |
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| 192 | !$OMP DO SCHEDULE( STATIC ) |
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| 193 | DO i = nxl, nxr |
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| 194 | DO j = nys, nyn |
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| 195 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 196 | d(k,j,i) = d(k,j,i) / dt_3d |
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| 197 | ENDDO |
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| 198 | ENDDO |
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| 199 | ENDDO |
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| 200 | #endif |
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| 201 | |
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| 202 | ! |
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| 203 | !-- For completeness, set the divergence sum of all statistic regions to those |
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| 204 | !-- of the total domain |
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| 205 | sums_divold_l(0:statistic_regions) = localsum |
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| 206 | |
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| 207 | ! |
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| 208 | !-- Determine absolute minimum/maximum (only for test cases, therefore as |
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| 209 | !-- comment line) |
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| 210 | ! CALL global_min_max( nzb+1, nzt, nys, nyn, nxl, nxr, d, 'abs', divmax, & |
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| 211 | ! divmax_ijk ) |
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| 212 | |
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| 213 | CALL cpu_log( log_point_s(1), 'divergence', 'stop' ) |
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| 214 | |
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| 215 | ! |
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| 216 | !-- Compute the pressure perturbation solving the Poisson equation |
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| 217 | IF ( psolver(1:7) == 'poisfft' ) THEN |
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| 218 | |
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| 219 | ! |
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| 220 | !-- Enlarge the size of tend, used as a working array for the transpositions |
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| 221 | IF ( nxra > nxr .OR. nyna > nyn .OR. nza > nz ) THEN |
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| 222 | DEALLOCATE( tend ) |
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| 223 | ALLOCATE( tend(1:nza,nys:nyna,nxl:nxra) ) |
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| 224 | ENDIF |
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| 225 | |
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| 226 | ! |
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| 227 | !-- Solve Poisson equation via FFT and solution of tridiagonal matrices |
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| 228 | IF ( psolver == 'poisfft' ) THEN |
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| 229 | ! |
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| 230 | !-- Solver for 2d-decomposition |
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| 231 | CALL poisfft( d, tend ) |
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| 232 | ELSEIF ( psolver == 'poisfft_hybrid' ) THEN |
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| 233 | ! |
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| 234 | !-- Solver for 1d-decomposition (using MPI and OpenMP). |
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| 235 | !-- The old hybrid-solver is still included here, as long as there |
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| 236 | !-- are some optimization problems in poisfft |
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| 237 | CALL poisfft_hybrid( d ) |
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| 238 | ENDIF |
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| 239 | |
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| 240 | ! |
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| 241 | !-- Resize tend to its normal size |
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| 242 | IF ( nxra > nxr .OR. nyna > nyn .OR. nza > nz ) THEN |
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| 243 | DEALLOCATE( tend ) |
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| 244 | ALLOCATE( tend(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) ) |
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| 245 | ENDIF |
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| 246 | |
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| 247 | ! |
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| 248 | !-- Store computed perturbation pressure and set boundary condition in |
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| 249 | !-- z-direction |
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| 250 | !$OMP PARALLEL DO |
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| 251 | DO i = nxl, nxr |
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| 252 | DO j = nys, nyn |
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| 253 | DO k = nzb+1, nzt |
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| 254 | tend(k,j,i) = d(k,j,i) |
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| 255 | ENDDO |
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| 256 | ENDDO |
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| 257 | ENDDO |
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| 258 | |
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| 259 | ! |
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| 260 | !-- Bottom boundary: |
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| 261 | !-- This condition is only required for internal output. The pressure |
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| 262 | !-- gradient (dp(nzb+1)-dp(nzb))/dz is not used anywhere else. |
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| 263 | IF ( ibc_p_b == 1 ) THEN |
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| 264 | ! |
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| 265 | !-- Neumann (dp/dz = 0) |
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| 266 | !$OMP PARALLEL DO |
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| 267 | DO i = nxl-1, nxr+1 |
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| 268 | DO j = nys-1, nyn+1 |
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| 269 | tend(nzb_s_inner(j,i),j,i) = tend(nzb_s_inner(j,i)+1,j,i) |
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| 270 | ENDDO |
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| 271 | ENDDO |
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| 272 | |
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| 273 | ELSEIF ( ibc_p_b == 2 ) THEN |
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| 274 | ! |
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| 275 | !-- Neumann condition for inhomogeneous surfaces, |
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| 276 | !-- here currently still in the form of a zero gradient. Actually |
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| 277 | !-- dp/dz = -(dtau13/dx + dtau23/dy) + g*pt'/pt0 would have to be used for |
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| 278 | !-- the computation (cf. above: computation of divergences). |
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| 279 | !$OMP PARALLEL DO |
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| 280 | DO i = nxl-1, nxr+1 |
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| 281 | DO j = nys-1, nyn+1 |
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| 282 | tend(nzb_s_inner(j,i),j,i) = tend(nzb_s_inner(j,i)+1,j,i) |
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| 283 | ENDDO |
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| 284 | ENDDO |
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| 285 | |
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| 286 | ELSE |
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| 287 | ! |
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| 288 | !-- Dirichlet |
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| 289 | !$OMP PARALLEL DO |
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| 290 | DO i = nxl-1, nxr+1 |
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| 291 | DO j = nys-1, nyn+1 |
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| 292 | tend(nzb_s_inner(j,i),j,i) = 0.0 |
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| 293 | ENDDO |
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| 294 | ENDDO |
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| 295 | |
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| 296 | ENDIF |
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| 297 | |
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| 298 | ! |
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| 299 | !-- Top boundary |
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| 300 | IF ( ibc_p_t == 1 ) THEN |
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| 301 | ! |
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| 302 | !-- Neumann |
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| 303 | !$OMP PARALLEL DO |
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| 304 | DO i = nxl-1, nxr+1 |
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| 305 | DO j = nys-1, nyn+1 |
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| 306 | tend(nzt+1,j,i) = tend(nzt,j,i) |
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| 307 | ENDDO |
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| 308 | ENDDO |
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| 309 | |
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| 310 | ELSE |
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| 311 | ! |
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| 312 | !-- Dirichlet |
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| 313 | !$OMP PARALLEL DO |
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| 314 | DO i = nxl-1, nxr+1 |
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| 315 | DO j = nys-1, nyn+1 |
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| 316 | tend(nzt+1,j,i) = 0.0 |
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| 317 | ENDDO |
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| 318 | ENDDO |
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| 319 | |
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| 320 | ENDIF |
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| 321 | |
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| 322 | ! |
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| 323 | !-- Exchange boundaries for p |
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| 324 | CALL exchange_horiz( tend, 0, 0 ) |
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| 325 | |
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| 326 | ELSEIF ( psolver == 'sor' ) THEN |
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| 327 | |
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| 328 | ! |
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| 329 | !-- Solve Poisson equation for perturbation pressure using SOR-Red/Black |
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| 330 | !-- scheme |
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| 331 | CALL sor( d, ddzu, ddzw, p ) |
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| 332 | tend = p |
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| 333 | |
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| 334 | ELSEIF ( psolver == 'multigrid' ) THEN |
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| 335 | |
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| 336 | ! |
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| 337 | !-- Solve Poisson equation for perturbation pressure using Multigrid scheme, |
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| 338 | !-- array tend is used to store the residuals |
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| 339 | CALL poismg( tend ) |
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| 340 | |
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| 341 | ! |
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| 342 | !-- Restore perturbation pressure on tend because this array is used |
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| 343 | !-- further below to correct the velocity fields |
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| 344 | tend = p |
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| 345 | |
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| 346 | ENDIF |
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| 347 | |
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| 348 | ! |
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| 349 | !-- Store perturbation pressure on array p, used in the momentum equations |
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| 350 | IF ( psolver(1:7) == 'poisfft' ) THEN |
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| 351 | ! |
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| 352 | !-- Here, only the values from the left and right boundaries are copied |
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| 353 | !-- The remaining values are copied in the following loop due to speed |
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| 354 | !-- optimization |
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| 355 | !$OMP PARALLEL DO |
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| 356 | DO j = nys-1, nyn+1 |
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| 357 | DO k = nzb, nzt+1 |
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| 358 | p(k,j,nxl-1) = tend(k,j,nxl-1) |
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| 359 | p(k,j,nxr+1) = tend(k,j,nxr+1) |
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| 360 | ENDDO |
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| 361 | ENDDO |
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| 362 | ENDIF |
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| 363 | |
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| 364 | ! |
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| 365 | !-- Correction of the provisional velocities with the current perturbation |
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| 366 | !-- pressure just computed |
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| 367 | IF ( bc_lr /= 'cyclic' .OR. bc_ns /= 'cyclic' ) uvmean_outflow_l = 0.0 |
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| 368 | IF ( conserve_volume_flow ) THEN |
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| 369 | volume_flow_l(1) = 0.0 |
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| 370 | volume_flow_l(2) = 0.0 |
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| 371 | ENDIF |
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| 372 | !$OMP PARALLEL PRIVATE (i,j,k) |
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| 373 | !$OMP DO |
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| 374 | DO i = nxl, nxr |
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| 375 | IF ( psolver(1:7) == 'poisfft' ) THEN |
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| 376 | DO j = nys-1, nyn+1 |
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| 377 | DO k = nzb, nzt+1 |
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| 378 | p(k,j,i) = tend(k,j,i) |
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| 379 | ENDDO |
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| 380 | ENDDO |
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| 381 | ENDIF |
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| 382 | DO j = nys, nyn |
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| 383 | DO k = nzb_w_inner(j,i)+1, nzt |
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| 384 | w(k,j,i) = w(k,j,i) - dt_3d * & |
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| 385 | ( tend(k+1,j,i) - tend(k,j,i) ) * ddzu(k+1) |
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| 386 | ENDDO |
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| 387 | DO k = nzb_u_inner(j,i)+1, nzt |
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| 388 | u(k,j,i) = u(k,j,i) - dt_3d * ( tend(k,j,i) - tend(k,j,i-1) ) * ddx |
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| 389 | ENDDO |
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| 390 | DO k = nzb_v_inner(j,i)+1, nzt |
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| 391 | v(k,j,i) = v(k,j,i) - dt_3d * ( tend(k,j,i) - tend(k,j-1,i) ) * ddy |
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| 392 | ENDDO |
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| 393 | |
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| 394 | ! |
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| 395 | !-- Sum up the horizontal velocity along the outflow plane (in case |
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| 396 | !-- of non-cyclic boundary conditions). The respective mean velocity |
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| 397 | !-- is calculated from this in routine boundary_conds. |
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| 398 | ! IF ( outflow_l .AND. i == nxl ) THEN |
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| 399 | ! !$OMP CRITICAL |
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| 400 | ! DO k = nzb, nzt+1 |
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| 401 | ! uvmean_outflow_l(k) = uvmean_outflow_l(k) + v(k,j,nxl) |
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| 402 | ! ENDDO |
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| 403 | ! !$OMP END CRITICAL |
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| 404 | ! ELSEIF ( outflow_r .AND. i == nxr ) THEN |
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| 405 | ! !$OMP CRITICAL |
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| 406 | ! DO k = nzb, nzt+1 |
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| 407 | ! uvmean_outflow_l(k) = uvmean_outflow_l(k) + v(k,j,nxr) |
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| 408 | ! ENDDO |
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| 409 | ! !$OMP END CRITICAL |
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| 410 | ! ELSEIF ( outflow_s .AND. j == nys ) THEN |
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| 411 | ! !$OMP CRITICAL |
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| 412 | ! DO k = nzb, nzt+1 |
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| 413 | ! uvmean_outflow_l(k) = uvmean_outflow_l(k) + u(k,nys,i) |
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| 414 | ! ENDDO |
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| 415 | ! !$OMP END CRITICAL |
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| 416 | ! ELSEIF ( outflow_n .AND. j == nyn ) THEN |
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| 417 | ! !$OMP CRITICAL |
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| 418 | ! DO k = nzb, nzt+1 |
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| 419 | ! uvmean_outflow_l(k) = uvmean_outflow_l(k) + u(k,nyn,i) |
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| 420 | ! ENDDO |
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| 421 | ! !$OMP END CRITICAL |
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| 422 | ! ENDIF |
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| 423 | |
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| 424 | ! |
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| 425 | !-- Sum up the volume flow through the right and north boundary |
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| 426 | IF ( conserve_volume_flow .AND. i == nx ) THEN |
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| 427 | !$OMP CRITICAL |
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| 428 | DO k = nzb_2d(j,i) + 1, nzt |
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| 429 | volume_flow_l(1) = volume_flow_l(1) + u(k,j,i) * dzu(k) |
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| 430 | ENDDO |
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| 431 | !$OMP END CRITICAL |
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| 432 | ENDIF |
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| 433 | IF ( conserve_volume_flow .AND. j == ny ) THEN |
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| 434 | !$OMP CRITICAL |
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| 435 | DO k = nzb_2d(j,i) + 1, nzt |
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| 436 | volume_flow_l(2) = volume_flow_l(2) + v(k,j,i) * dzu(k) |
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| 437 | ENDDO |
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| 438 | !$OMP END CRITICAL |
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| 439 | ENDIF |
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| 440 | |
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| 441 | ENDDO |
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| 442 | ENDDO |
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| 443 | !$OMP END PARALLEL |
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| 444 | |
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| 445 | ! |
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| 446 | !-- Conserve the volume flow |
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| 447 | IF ( conserve_volume_flow ) THEN |
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| 448 | |
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| 449 | #if defined( __parallel ) |
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| 450 | CALL MPI_ALLREDUCE( volume_flow_l(1), volume_flow(1), 2, MPI_REAL, & |
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| 451 | MPI_SUM, comm2d, ierr ) |
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| 452 | #else |
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| 453 | volume_flow = volume_flow_l |
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| 454 | #endif |
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| 455 | |
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| 456 | volume_flow_offset = ( volume_flow_initial - volume_flow ) / & |
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| 457 | volume_flow_area |
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| 458 | |
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| 459 | !$OMP PARALLEL PRIVATE (i,j,k) |
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| 460 | !$OMP DO |
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| 461 | DO i = nxl, nxr |
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| 462 | DO j = nys, nyn |
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| 463 | DO k = nzb_u_inner(j,i) + 1, nzt |
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| 464 | u(k,j,i) = u(k,j,i) + volume_flow_offset(1) |
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| 465 | ENDDO |
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| 466 | DO k = nzb_v_inner(j,i) + 1, nzt |
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| 467 | v(k,j,i) = v(k,j,i) + volume_flow_offset(2) |
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| 468 | ENDDO |
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| 469 | ENDDO |
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| 470 | ENDDO |
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| 471 | !$OMP END PARALLEL |
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| 472 | |
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| 473 | ENDIF |
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| 474 | |
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| 475 | ! |
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| 476 | !-- Exchange of boundaries for the velocities |
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| 477 | CALL exchange_horiz( u, uxrp, 0 ) |
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| 478 | CALL exchange_horiz( v, 0, vynp ) |
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| 479 | CALL exchange_horiz( w, 0, 0 ) |
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| 480 | |
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| 481 | ! |
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| 482 | !-- Compute the divergence of the corrected velocity field, |
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| 483 | !-- a possible PE-sum is computed in flow_statistics |
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| 484 | CALL cpu_log( log_point_s(1), 'divergence', 'start' ) |
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| 485 | sums_divnew_l = 0.0 |
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| 486 | |
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| 487 | ! |
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| 488 | !-- d must be reset to zero because it can contain nonzero values below the |
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| 489 | !-- topography |
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| 490 | IF ( topography /= 'flat' ) d = 0.0 |
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| 491 | |
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| 492 | localsum = 0.0 |
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| 493 | threadsum = 0.0 |
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| 494 | |
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| 495 | !$OMP PARALLEL PRIVATE (i,j,k) FIRSTPRIVATE(threadsum) REDUCTION(+:localsum) |
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| 496 | !$OMP DO SCHEDULE( STATIC ) |
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| 497 | #if defined( __ibm ) |
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| 498 | DO i = nxl, nxr |
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| 499 | DO j = nys, nyn |
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| 500 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 501 | d(k,j,i) = ( u(k,j,i+1) - u(k,j,i) ) * ddx + & |
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| 502 | ( v(k,j+1,i) - v(k,j,i) ) * ddy + & |
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| 503 | ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) |
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| 504 | ENDDO |
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| 505 | DO k = nzb+1, nzt |
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| 506 | threadsum = threadsum + ABS( d(k,j,i) ) |
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| 507 | ENDDO |
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| 508 | ENDDO |
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| 509 | ENDDO |
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| 510 | #else |
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| 511 | DO i = nxl, nxr |
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| 512 | DO j = nys, nyn |
|---|
| 513 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 514 | d(k,j,i) = ( u(k,j,i+1) - u(k,j,i) ) * ddx + & |
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| 515 | ( v(k,j+1,i) - v(k,j,i) ) * ddy + & |
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| 516 | ( w(k,j,i) - w(k-1,j,i) ) * ddzw(k) |
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| 517 | threadsum = threadsum + ABS( d(k,j,i) ) |
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| 518 | ENDDO |
|---|
| 519 | ENDDO |
|---|
| 520 | ENDDO |
|---|
| 521 | #endif |
|---|
| 522 | localsum = localsum + threadsum |
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| 523 | !$OMP END PARALLEL |
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| 524 | |
|---|
| 525 | ! |
|---|
| 526 | !-- For completeness, set the divergence sum of all statistic regions to those |
|---|
| 527 | !-- of the total domain |
|---|
| 528 | sums_divnew_l(0:statistic_regions) = localsum |
|---|
| 529 | |
|---|
| 530 | CALL cpu_log( log_point_s(1), 'divergence', 'stop' ) |
|---|
| 531 | |
|---|
| 532 | CALL cpu_log( log_point(8), 'pres', 'stop' ) |
|---|
| 533 | |
|---|
| 534 | |
|---|
| 535 | END SUBROUTINE pres |
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