[1601] | 1 | ! |
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| 2 | ! $Id: mod_filtre_fft.F90 1601 2011-12-07 07:05:43Z fhourdin $ |
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| 3 | ! |
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| 4 | |
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[994] | 5 | MODULE mod_filtre_fft |
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| 6 | |
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| 7 | LOGICAL,SAVE :: use_filtre_fft |
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| 8 | REAL,SAVE,ALLOCATABLE :: Filtre_u(:,:) |
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| 9 | REAL,SAVE,ALLOCATABLE :: Filtre_v(:,:) |
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| 10 | REAL,SAVE,ALLOCATABLE :: Filtre_inv(:,:) |
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| 11 | |
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| 12 | CONTAINS |
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| 13 | |
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| 14 | SUBROUTINE Init_filtre_fft(coeffu,modfrstu,jfiltnu,jfiltsu,coeffv,modfrstv,jfiltnv,jfiltsv) |
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| 15 | USE mod_fft |
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| 16 | IMPLICIT NONE |
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| 17 | include 'dimensions.h' |
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| 18 | REAL, INTENT(IN) :: coeffu(iim,jjm) |
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| 19 | INTEGER,INTENT(IN) :: modfrstu(jjm) |
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| 20 | INTEGER,INTENT(IN) :: jfiltnu |
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| 21 | INTEGER,INTENT(IN) :: jfiltsu |
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| 22 | REAL, INTENT(IN) :: coeffv(iim,jjm) |
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| 23 | INTEGER,INTENT(IN) :: modfrstv(jjm) |
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| 24 | INTEGER,INTENT(IN) :: jfiltnv |
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| 25 | INTEGER,INTENT(IN) :: jfiltsv |
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| 26 | |
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| 27 | INTEGER :: index_vp(iim) |
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| 28 | INTEGER :: i,j |
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[1601] | 29 | INTEGER :: l,ll_nb |
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| 30 | |
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[994] | 31 | index_vp(1)=1 |
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| 32 | DO i=1,iim/2 |
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| 33 | index_vp(i+1)=i*2 |
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| 34 | ENDDO |
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| 35 | |
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| 36 | DO i=1,iim/2-1 |
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| 37 | index_vp(iim/2+i+1)=iim-2*i+1 |
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| 38 | ENDDO |
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| 39 | |
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| 40 | ALLOCATE(Filtre_u(iim,jjm)) |
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| 41 | ALLOCATE(Filtre_v(iim,jjm)) |
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| 42 | ALLOCATE(Filtre_inv(iim,jjm)) |
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| 43 | |
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| 44 | |
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| 45 | DO j=2,jfiltnu |
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| 46 | DO i=1,iim |
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| 47 | IF (index_vp(i) < modfrstu(j)) THEN |
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| 48 | Filtre_u(i,j)=0 |
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| 49 | ELSE |
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| 50 | Filtre_u(i,j)=coeffu(index_vp(i),j) |
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| 51 | ENDIF |
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| 52 | ENDDO |
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| 53 | ENDDO |
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| 54 | |
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| 55 | DO j=jfiltsu,jjm |
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| 56 | DO i=1,iim |
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| 57 | IF (index_vp(i) < modfrstu(j)) THEN |
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| 58 | Filtre_u(i,j)=0 |
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| 59 | ELSE |
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| 60 | Filtre_u(i,j)=coeffu(index_vp(i),j) |
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| 61 | ENDIF |
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| 62 | ENDDO |
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| 63 | ENDDO |
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| 64 | |
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| 65 | DO j=1,jfiltnv |
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| 66 | DO i=1,iim |
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| 67 | IF (index_vp(i) < modfrstv(j)) THEN |
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| 68 | Filtre_v(i,j)=0 |
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| 69 | ELSE |
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| 70 | Filtre_v(i,j)=coeffv(index_vp(i),j) |
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| 71 | ENDIF |
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| 72 | ENDDO |
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| 73 | ENDDO |
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| 74 | |
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| 75 | DO j=jfiltsv,jjm |
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| 76 | DO i=1,iim |
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| 77 | IF (index_vp(i) < modfrstv(j)) THEN |
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| 78 | Filtre_v(i,j)=0 |
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| 79 | ELSE |
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| 80 | Filtre_v(i,j)=coeffv(index_vp(i),j) |
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| 81 | ENDIF |
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| 82 | ENDDO |
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| 83 | ENDDO |
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| 84 | |
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| 85 | DO j=2,jfiltnu |
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| 86 | DO i=1,iim |
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| 87 | IF (index_vp(i) < modfrstu(j)) THEN |
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| 88 | Filtre_inv(i,j)=0 |
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| 89 | ELSE |
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| 90 | Filtre_inv(i,j)=coeffu(index_vp(i),j)/(1.+coeffu(index_vp(i),j)) |
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| 91 | ENDIF |
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| 92 | ENDDO |
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| 93 | ENDDO |
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| 94 | |
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| 95 | DO j=jfiltsu,jjm |
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| 96 | DO i=1,iim |
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| 97 | IF (index_vp(i) < modfrstu(j)) THEN |
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| 98 | Filtre_inv(i,j)=0 |
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| 99 | ELSE |
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| 100 | Filtre_inv(i,j)=coeffu(index_vp(i),j)/(1.+coeffu(index_vp(i),j)) |
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| 101 | ENDIF |
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| 102 | ENDDO |
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| 103 | ENDDO |
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| 104 | |
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[1601] | 105 | #ifdef FFT_FFTW |
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| 106 | |
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| 107 | WRITE (*,*)"COTH jfiltnu,jfiltsu,jfiltnv,jjm-jfiltsv" |
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| 108 | WRITE (*,*)jfiltnu,jfiltsu,jfiltnv,jjm-jfiltsv |
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| 109 | WRITE (*,*)MAX(jfiltnu-2,jjm-jfiltsu,jfiltnv-2,jjm-jfiltsv)+1 |
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| 110 | CALL Init_FFT(iim,(llm+1)*(MAX(jfiltnu-2,jjm-jfiltsu,jfiltnv-2,jjm-jfiltsv)+1)) |
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| 111 | #else |
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[994] | 112 | CALL Init_FFT(iim,(jjm+1)*(llm+1)) |
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[1601] | 113 | #endif |
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[994] | 114 | |
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| 115 | END SUBROUTINE Init_filtre_fft |
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| 116 | |
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| 117 | SUBROUTINE Filtre_u_fft(vect_inout,nlat,jj_begin,jj_end,nbniv) |
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| 118 | USE mod_fft |
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| 119 | #ifdef CPP_PARA |
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| 120 | USE parallel,ONLY : OMP_CHUNK |
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| 121 | #endif |
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| 122 | IMPLICIT NONE |
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| 123 | include 'dimensions.h' |
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| 124 | INTEGER,INTENT(IN) :: nlat |
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| 125 | INTEGER,INTENT(IN) :: jj_begin |
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| 126 | INTEGER,INTENT(IN) :: jj_end |
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| 127 | INTEGER,INTENT(IN) :: nbniv |
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| 128 | REAL,INTENT(INOUT) :: vect_inout(iim+1,nlat,nbniv) |
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| 129 | |
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| 130 | REAL :: vect(iim+inc,jj_end-jj_begin+1,nbniv) |
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[1601] | 131 | COMPLEX :: TF_vect(iim/2+1,jj_end-jj_begin+1,nbniv) |
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[994] | 132 | INTEGER :: nb_vect |
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| 133 | INTEGER :: i,j,l |
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| 134 | INTEGER :: ll_nb |
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| 135 | |
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| 136 | ll_nb=0 |
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| 137 | !$OMP DO SCHEDULE(STATIC,OMP_CHUNK) |
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| 138 | DO l=1,nbniv |
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| 139 | ll_nb=ll_nb+1 |
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| 140 | DO j=1,jj_end-jj_begin+1 |
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| 141 | DO i=1,iim+1 |
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| 142 | vect(i,j,ll_nb)=vect_inout(i,j+jj_begin-1,l) |
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| 143 | ENDDO |
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| 144 | ENDDO |
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| 145 | ENDDO |
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| 146 | !$OMP END DO NOWAIT |
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| 147 | |
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| 148 | nb_vect=(jj_end-jj_begin+1)*ll_nb |
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| 149 | |
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| 150 | CALL FFT_forward(vect,TF_vect,nb_vect) |
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| 151 | |
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| 152 | DO l=1,ll_nb |
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| 153 | DO j=1,jj_end-jj_begin+1 |
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| 154 | DO i=1,iim/2+1 |
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| 155 | TF_vect(i,j,l)=TF_vect(i,j,l)*Filtre_u(i,jj_begin+j-1) |
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| 156 | ENDDO |
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| 157 | ENDDO |
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| 158 | ENDDO |
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[1601] | 159 | |
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[994] | 160 | CALL FFT_backward(TF_vect,vect,nb_vect) |
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[1601] | 161 | |
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| 162 | |
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[994] | 163 | ll_nb=0 |
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| 164 | !$OMP DO SCHEDULE(STATIC,OMP_CHUNK) |
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| 165 | DO l=1,nbniv |
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| 166 | ll_nb=ll_nb+1 |
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| 167 | DO j=1,jj_end-jj_begin+1 |
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| 168 | DO i=1,iim+1 |
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| 169 | vect_inout(i,j+jj_begin-1,l)=vect(i,j,ll_nb) |
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| 170 | ENDDO |
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| 171 | ENDDO |
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| 172 | ENDDO |
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| 173 | !$OMP END DO NOWAIT |
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| 174 | |
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| 175 | END SUBROUTINE Filtre_u_fft |
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| 176 | |
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| 177 | |
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| 178 | SUBROUTINE Filtre_v_fft(vect_inout,nlat,jj_begin,jj_end,nbniv) |
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| 179 | USE mod_fft |
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| 180 | #ifdef CPP_PARA |
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| 181 | USE parallel,ONLY : OMP_CHUNK |
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| 182 | #endif |
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| 183 | IMPLICIT NONE |
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| 184 | INCLUDE 'dimensions.h' |
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| 185 | INTEGER,INTENT(IN) :: nlat |
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| 186 | INTEGER,INTENT(IN) :: jj_begin |
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| 187 | INTEGER,INTENT(IN) :: jj_end |
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| 188 | INTEGER,INTENT(IN) :: nbniv |
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| 189 | REAL,INTENT(INOUT) :: vect_inout(iim+1,nlat,nbniv) |
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| 190 | |
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| 191 | REAL :: vect(iim+inc,jj_end-jj_begin+1,nbniv) |
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[1601] | 192 | COMPLEX :: TF_vect(iim/2+1,jj_end-jj_begin+1,nbniv) |
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[994] | 193 | INTEGER :: nb_vect |
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| 194 | INTEGER :: i,j,l |
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| 195 | INTEGER :: ll_nb |
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| 196 | |
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| 197 | ll_nb=0 |
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| 198 | !$OMP DO SCHEDULE(STATIC,OMP_CHUNK) |
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| 199 | DO l=1,nbniv |
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| 200 | ll_nb=ll_nb+1 |
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| 201 | DO j=1,jj_end-jj_begin+1 |
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| 202 | DO i=1,iim+1 |
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| 203 | vect(i,j,ll_nb)=vect_inout(i,j+jj_begin-1,l) |
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| 204 | ENDDO |
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| 205 | ENDDO |
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| 206 | ENDDO |
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| 207 | !$OMP END DO NOWAIT |
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| 208 | |
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| 209 | |
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| 210 | nb_vect=(jj_end-jj_begin+1)*ll_nb |
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| 211 | |
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| 212 | CALL FFT_forward(vect,TF_vect,nb_vect) |
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| 213 | |
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| 214 | DO l=1,ll_nb |
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| 215 | DO j=1,jj_end-jj_begin+1 |
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| 216 | DO i=1,iim/2+1 |
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| 217 | TF_vect(i,j,l)=TF_vect(i,j,l)*Filtre_v(i,jj_begin+j-1) |
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| 218 | ENDDO |
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| 219 | ENDDO |
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| 220 | ENDDO |
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| 221 | |
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| 222 | CALL FFT_backward(TF_vect,vect,nb_vect) |
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| 223 | |
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| 224 | |
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| 225 | ll_nb=0 |
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| 226 | !$OMP DO SCHEDULE(STATIC,OMP_CHUNK) |
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| 227 | DO l=1,nbniv |
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| 228 | ll_nb=ll_nb+1 |
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| 229 | DO j=1,jj_end-jj_begin+1 |
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| 230 | DO i=1,iim+1 |
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| 231 | vect_inout(i,j+jj_begin-1,l)=vect(i,j,ll_nb) |
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| 232 | ENDDO |
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| 233 | ENDDO |
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| 234 | ENDDO |
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| 235 | !$OMP END DO NOWAIT |
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| 236 | |
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| 237 | END SUBROUTINE Filtre_v_fft |
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| 238 | |
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| 239 | |
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| 240 | SUBROUTINE Filtre_inv_fft(vect_inout,nlat,jj_begin,jj_end,nbniv) |
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| 241 | USE mod_fft |
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| 242 | #ifdef CPP_PARA |
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| 243 | USE parallel,ONLY : OMP_CHUNK |
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| 244 | #endif |
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| 245 | IMPLICIT NONE |
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| 246 | INCLUDE 'dimensions.h' |
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| 247 | INTEGER,INTENT(IN) :: nlat |
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| 248 | INTEGER,INTENT(IN) :: jj_begin |
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| 249 | INTEGER,INTENT(IN) :: jj_end |
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| 250 | INTEGER,INTENT(IN) :: nbniv |
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| 251 | REAL,INTENT(INOUT) :: vect_inout(iim+1,nlat,nbniv) |
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| 252 | |
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[1601] | 253 | REAL :: vect(iim+inc,jj_end-jj_begin+1,nbniv) |
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| 254 | COMPLEX :: TF_vect(iim/2+1,jj_end-jj_begin+1,nbniv) |
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[994] | 255 | INTEGER :: nb_vect |
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| 256 | INTEGER :: i,j,l |
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| 257 | INTEGER :: ll_nb |
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| 258 | |
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| 259 | ll_nb=0 |
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| 260 | !$OMP DO SCHEDULE(STATIC,OMP_CHUNK) |
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| 261 | DO l=1,nbniv |
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| 262 | ll_nb=ll_nb+1 |
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| 263 | DO j=1,jj_end-jj_begin+1 |
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| 264 | DO i=1,iim+1 |
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| 265 | vect(i,j,ll_nb)=vect_inout(i,j+jj_begin-1,l) |
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| 266 | ENDDO |
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| 267 | ENDDO |
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| 268 | ENDDO |
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| 269 | !$OMP END DO NOWAIT |
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| 270 | |
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| 271 | nb_vect=(jj_end-jj_begin+1)*ll_nb |
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| 272 | |
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| 273 | CALL FFT_forward(vect,TF_vect,nb_vect) |
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| 274 | |
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| 275 | DO l=1,ll_nb |
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| 276 | DO j=1,jj_end-jj_begin+1 |
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| 277 | DO i=1,iim/2+1 |
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| 278 | TF_vect(i,j,l)=TF_vect(i,j,l)*Filtre_inv(i,jj_begin+j-1) |
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| 279 | ENDDO |
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| 280 | ENDDO |
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| 281 | ENDDO |
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| 282 | |
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| 283 | CALL FFT_backward(TF_vect,vect,nb_vect) |
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| 284 | |
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| 285 | ll_nb=0 |
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| 286 | !$OMP DO SCHEDULE(STATIC,OMP_CHUNK) |
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| 287 | DO l=1,nbniv |
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| 288 | ll_nb=ll_nb+1 |
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| 289 | DO j=1,jj_end-jj_begin+1 |
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| 290 | DO i=1,iim+1 |
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| 291 | vect_inout(i,j+jj_begin-1,l)=vect(i,j,ll_nb) |
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| 292 | ENDDO |
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| 293 | ENDDO |
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| 294 | ENDDO |
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| 295 | !$OMP END DO NOWAIT |
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| 296 | |
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| 297 | END SUBROUTINE Filtre_inv_fft |
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| 298 | |
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| 299 | END MODULE mod_filtre_fft |
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| 300 | |
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