1 | MODULE nemogcm |
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2 | !!====================================================================== |
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3 | !! *** MODULE nemogcm *** |
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4 | !! Off-line Ocean : passive tracer evolution, dynamics read in files |
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5 | !!====================================================================== |
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6 | !! History : 3.3 ! 2010-05 (C. Ethe) Full reorganization of the off-line: phasing with the on-line |
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7 | !! 4.0 ! 2011-01 (C. Ethe, A. R. Porter, STFC Daresbury) dynamical allocation |
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8 | !!---------------------------------------------------------------------- |
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9 | |
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10 | !!---------------------------------------------------------------------- |
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11 | !! nemo_gcm : off-line: solve ocean tracer only |
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12 | !! nemo_init : initialization of the nemo model |
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13 | !! nemo_ctl : initialisation of algorithm flag |
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14 | !! nemo_closefile : close remaining files |
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15 | !!---------------------------------------------------------------------- |
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16 | USE dom_oce ! ocean space domain variables |
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17 | USE oce ! dynamics and tracers variables |
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18 | USE c1d ! 1D configuration |
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19 | USE domcfg ! domain configuration (dom_cfg routine) |
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20 | USE domain ! domain initialization (dom_init routine) |
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21 | USE istate ! initial state setting (istate_init routine) |
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22 | USE eosbn2 ! equation of state (eos bn2 routine) |
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23 | ! ! ocean physics |
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24 | USE ldftra ! lateral diffusivity setting (ldf_tra_init routine) |
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25 | USE ldfslp ! slopes of neutral surfaces (ldf_slp_init routine) |
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26 | USE traqsr ! solar radiation penetration (tra_qsr_init routine) |
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27 | USE trabbl ! bottom boundary layer (tra_bbl_init routine) |
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28 | USE zdfini ! vertical physics: initialization |
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29 | USE sbcmod ! surface boundary condition (sbc_init routine) |
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30 | USE phycst ! physical constant (par_cst routine) |
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31 | USE dtadyn ! Lecture and Interpolation of the dynamical fields |
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32 | USE trcini ! Initilization of the passive tracers |
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33 | USE daymod ! calendar (day routine) |
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34 | USE trcstp ! passive tracer time-stepping (trc_stp routine) |
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35 | USE dtadyn ! Lecture and interpolation of the dynamical fields |
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36 | USE stpctl ! time stepping control (stp_ctl routine) |
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37 | ! ! I/O & MPP |
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38 | USE iom ! I/O library |
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39 | USE in_out_manager ! I/O manager |
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40 | USE mppini ! shared/distributed memory setting (mpp_init routine) |
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41 | USE lib_mpp ! distributed memory computing |
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42 | #if defined key_iomput |
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43 | USE mod_ioclient |
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44 | #endif |
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45 | USE prtctl ! Print control (prt_ctl_init routine) |
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46 | USE timing ! Timing |
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47 | |
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48 | IMPLICIT NONE |
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49 | PRIVATE |
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50 | |
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51 | PUBLIC nemo_gcm ! called by nemo.F90 |
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52 | |
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53 | CHARACTER (len=64) :: cform_aaa="( /, 'AAAAAAAA', / ) " ! flag for output listing |
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54 | |
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55 | !!---------------------------------------------------------------------- |
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56 | !! NEMO/OFF 3.3 , NEMO Consortium (2010) |
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57 | !! $Id: nemogcm.F90 2528 2010-12-27 17:33:53Z rblod $ |
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58 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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59 | !!---------------------------------------------------------------------- |
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60 | CONTAINS |
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61 | |
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62 | SUBROUTINE nemo_gcm |
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63 | !!---------------------------------------------------------------------- |
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64 | !! *** ROUTINE nemo_gcm *** |
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65 | !! |
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66 | !! ** Purpose : nemo solves the primitive equations on an orthogonal |
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67 | !! curvilinear mesh on the sphere. |
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68 | !! |
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69 | !! ** Method : - model general initialization |
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70 | !! - launch the time-stepping (dta_dyn and trc_stp) |
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71 | !! - finalize the run by closing files and communications |
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72 | !! |
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73 | !! References : Madec, Delecluse,Imbard, and Levy, 1997: internal report, IPSL. |
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74 | !! Madec, 2008, internal report, IPSL. |
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75 | !!---------------------------------------------------------------------- |
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76 | INTEGER :: istp, indic ! time step index |
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77 | !!---------------------------------------------------------------------- |
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78 | |
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79 | CALL nemo_init ! Initializations |
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80 | |
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81 | IF( lk_mpp ) CALL mpp_max( nstop ) |
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82 | |
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83 | ! check that all process are still there... If some process have an error, |
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84 | ! they will never enter in step and other processes will wait until the end of the cpu time! |
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85 | IF( lk_mpp ) CALL mpp_max( nstop ) |
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86 | |
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87 | ! !-----------------------! |
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88 | ! !== time stepping ==! |
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89 | ! !-----------------------! |
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90 | istp = nit000 |
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91 | ! |
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92 | DO WHILE ( istp <= nitend .AND. nstop == 0 ) ! time stepping |
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93 | ! |
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94 | IF( istp /= nit000 ) CALL day ( istp ) ! Calendar (day was already called at nit000 in day_init) |
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95 | CALL iom_setkt( istp ) ! say to iom that we are at time step kstp |
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96 | CALL dta_dyn ( istp ) ! Interpolation of the dynamical fields |
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97 | CALL trc_stp ( istp ) ! time-stepping |
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98 | CALL stp_ctl ( istp, indic ) ! Time loop: control and print |
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99 | istp = istp + 1 |
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100 | IF( lk_mpp ) CALL mpp_max( nstop ) |
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101 | END DO |
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102 | |
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103 | ! !------------------------! |
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104 | ! !== finalize the run ==! |
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105 | ! !------------------------! |
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106 | IF(lwp) WRITE(numout,cform_aaa) ! Flag AAAAAAA |
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107 | |
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108 | IF( nstop /= 0 .AND. lwp ) THEN ! error print |
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109 | WRITE(numout,cform_err) |
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110 | WRITE(numout,*) nstop, ' error have been found' |
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111 | ENDIF |
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112 | ! |
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113 | IF( nn_timing == 1 ) CALL timing_finalize |
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114 | ! |
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115 | CALL nemo_closefile |
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116 | ! |
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117 | IF( lk_mpp ) CALL mppstop ! Close all files (mpp) |
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118 | ! |
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119 | END SUBROUTINE nemo_gcm |
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120 | |
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121 | |
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122 | SUBROUTINE nemo_init |
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123 | !!---------------------------------------------------------------------- |
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124 | !! *** ROUTINE nemo_init *** |
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125 | !! |
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126 | !! ** Purpose : initialization of the nemo model in off-line mode |
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127 | !!---------------------------------------------------------------------- |
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128 | INTEGER :: ji ! dummy loop indices |
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129 | INTEGER :: ilocal_comm ! local integer |
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130 | CHARACTER(len=80), DIMENSION(16) :: cltxt = '' |
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131 | !! |
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132 | NAMELIST/namctl/ ln_ctl , nn_print, nn_ictls, nn_ictle, & |
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133 | & nn_isplt, nn_jsplt, nn_jctls, nn_jctle, & |
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134 | & nn_bench, nn_timing |
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135 | !!---------------------------------------------------------------------- |
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136 | ! |
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137 | ! ! open Namelist file |
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138 | CALL ctl_opn( numnam, 'namelist', 'OLD', 'FORMATTED', 'SEQUENTIAL', -1, 6, .FALSE. ) |
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139 | ! |
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140 | READ( numnam, namctl ) ! Namelist namctl : Control prints & Benchmark |
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141 | ! |
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142 | ! !--------------------------------------------! |
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143 | ! ! set communicator & select the local node ! |
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144 | ! !--------------------------------------------! |
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145 | #if defined key_iomput |
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146 | CALL init_ioclient( ilocal_comm ) ! exchange io_server nemo local communicator with the io_server |
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147 | narea = mynode( cltxt, numnam, nstop, ilocal_comm ) ! Nodes selection |
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148 | #else |
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149 | ilocal_comm = 0 |
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150 | narea = mynode( cltxt, numnam, nstop ) ! Nodes selection (control print return in cltxt) |
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151 | #endif |
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152 | |
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153 | narea = narea + 1 ! mynode return the rank of proc (0 --> jpnij -1 ) |
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154 | |
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155 | lwp = (narea == 1) .OR. ln_ctl ! control of all listing output print |
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156 | |
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157 | ! If dimensions of processor grid weren't specified in the namelist file |
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158 | ! then we calculate them here now that we have our communicator size |
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159 | IF( (jpni < 1) .OR. (jpnj < 1) )THEN |
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160 | #if defined key_mpp_mpi || defined key_mpp_shmem |
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161 | CALL nemo_partition(mppsize) |
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162 | #else |
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163 | jpni = 1 |
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164 | jpnj = 1 |
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165 | jpnij = jpni*jpnj |
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166 | #endif |
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167 | END IF |
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168 | |
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169 | ! Calculate domain dimensions given calculated jpni and jpnj |
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170 | ! This used to be done in par_oce.F90 when they were parameters rather |
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171 | ! than variables |
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172 | jpi = ( jpiglo-2*jpreci + (jpni-1) ) / jpni + 2*jpreci ! first dim. |
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173 | jpj = ( jpjglo-2*jprecj + (jpnj-1) ) / jpnj + 2*jprecj ! second dim. |
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174 | jpk = jpkdta ! third dim |
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175 | jpim1 = jpi-1 ! inner domain indices |
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176 | jpjm1 = jpj-1 ! " " |
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177 | jpkm1 = jpk-1 ! " " |
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178 | jpij = jpi*jpj ! jpi x j |
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179 | |
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180 | |
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181 | IF(lwp) THEN ! open listing units |
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182 | ! |
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183 | CALL ctl_opn( numout, 'ocean.output', 'REPLACE', 'FORMATTED', 'SEQUENTIAL', -1, 6, .FALSE., narea ) |
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184 | ! |
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185 | WRITE(numout,*) |
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186 | WRITE(numout,*) ' CNRS - NERC - Met OFFICE - MERCATOR-ocean' |
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187 | WRITE(numout,*) ' NEMO team' |
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188 | WRITE(numout,*) ' Ocean General Circulation Model' |
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189 | WRITE(numout,*) ' version 3.3 (2010) ' |
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190 | WRITE(numout,*) |
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191 | WRITE(numout,*) |
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192 | DO ji = 1, SIZE(cltxt) |
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193 | IF( TRIM(cltxt(ji)) /= '' ) WRITE(numout,*) cltxt(ji) ! control print of mynode |
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194 | END DO |
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195 | WRITE(numout,cform_aaa) ! Flag AAAAAAA |
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196 | ! |
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197 | ENDIF |
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198 | |
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199 | ! Now we know the dimensions of the grid and numout has been set we can |
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200 | ! allocate arrays |
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201 | CALL nemo_alloc() |
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202 | |
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203 | ! !--------------------------------! |
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204 | ! ! Model general initialization ! |
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205 | ! !--------------------------------! |
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206 | |
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207 | CALL nemo_ctl ! Control prints & Benchmark |
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208 | |
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209 | ! ! Domain decomposition |
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210 | IF( jpni*jpnj == jpnij ) THEN ; CALL mpp_init ! standard cutting out |
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211 | ELSE ; CALL mpp_init2 ! eliminate land processors |
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212 | ENDIF |
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213 | ! |
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214 | IF( nn_timing == 1 ) CALL timing_init |
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215 | ! |
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216 | |
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217 | ! ! General initialization |
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218 | IF( nn_timing == 1 ) CALL timing_start( 'nemo_init') |
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219 | ! |
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220 | CALL phy_cst ! Physical constants |
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221 | CALL eos_init ! Equation of state |
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222 | CALL dom_cfg ! Domain configuration |
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223 | CALL dom_init ! Domain |
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224 | CALL istate_init ! ocean initial state (Dynamics and tracers) |
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225 | |
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226 | IF( ln_nnogather ) CALL nemo_northcomms ! Initialise the northfold neighbour lists (must be done after the masks are defined) |
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227 | |
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228 | IF( ln_ctl ) CALL prt_ctl_init ! Print control |
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229 | |
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230 | ! ! Ocean physics |
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231 | CALL sbc_init ! Forcings : surface module |
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232 | #if ! defined key_degrad |
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233 | CALL ldf_tra_init ! Lateral ocean tracer physics |
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234 | #endif |
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235 | IF( lk_ldfslp ) CALL ldf_slp_init ! slope of lateral mixing |
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236 | |
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237 | ! ! Active tracers |
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238 | CALL tra_qsr_init ! penetrative solar radiation qsr |
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239 | IF( lk_trabbl ) CALL tra_bbl_init ! advective (and/or diffusive) bottom boundary layer scheme |
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240 | |
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241 | ! ! Passive tracers |
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242 | CALL trc_init ! Passive tracers initialization |
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243 | ! ! Dynamics |
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244 | CALL dta_dyn_init ! Initialization for the dynamics |
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245 | CALL iom_init ! iom_put initialization |
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246 | |
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247 | IF(lwp) WRITE(numout,cform_aaa) ! Flag AAAAAAA |
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248 | ! |
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249 | IF( nn_timing == 1 ) CALL timing_stop( 'nemo_init') |
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250 | ! |
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251 | END SUBROUTINE nemo_init |
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252 | |
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253 | |
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254 | SUBROUTINE nemo_ctl |
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255 | !!---------------------------------------------------------------------- |
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256 | !! *** ROUTINE nemo_ctl *** |
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257 | !! |
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258 | !! ** Purpose : control print setting |
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259 | !! |
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260 | !! ** Method : - print namctl information and check some consistencies |
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261 | !!---------------------------------------------------------------------- |
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262 | ! |
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263 | IF(lwp) THEN ! Parameter print |
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264 | WRITE(numout,*) |
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265 | WRITE(numout,*) 'nemo_flg: Control prints & Benchmark' |
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266 | WRITE(numout,*) '~~~~~~~ ' |
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267 | WRITE(numout,*) ' Namelist namctl' |
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268 | WRITE(numout,*) ' run control (for debugging) ln_ctl = ', ln_ctl |
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269 | WRITE(numout,*) ' level of print nn_print = ', nn_print |
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270 | WRITE(numout,*) ' Start i indice for SUM control nn_ictls = ', nn_ictls |
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271 | WRITE(numout,*) ' End i indice for SUM control nn_ictle = ', nn_ictle |
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272 | WRITE(numout,*) ' Start j indice for SUM control nn_jctls = ', nn_jctls |
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273 | WRITE(numout,*) ' End j indice for SUM control nn_jctle = ', nn_jctle |
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274 | WRITE(numout,*) ' number of proc. following i nn_isplt = ', nn_isplt |
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275 | WRITE(numout,*) ' number of proc. following j nn_jsplt = ', nn_jsplt |
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276 | WRITE(numout,*) ' benchmark parameter (0/1) nn_bench = ', nn_bench |
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277 | ENDIF |
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278 | ! |
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279 | nprint = nn_print ! convert DOCTOR namelist names into OLD names |
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280 | nictls = nn_ictls |
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281 | nictle = nn_ictle |
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282 | njctls = nn_jctls |
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283 | njctle = nn_jctle |
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284 | isplt = nn_isplt |
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285 | jsplt = nn_jsplt |
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286 | nbench = nn_bench |
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287 | ! ! Parameter control |
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288 | ! |
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289 | IF( ln_ctl ) THEN ! sub-domain area indices for the control prints |
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290 | IF( lk_mpp ) THEN |
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291 | isplt = jpni ; jsplt = jpnj ; ijsplt = jpni*jpnj ! the domain is forced to the real splitted domain |
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292 | ELSE |
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293 | IF( isplt == 1 .AND. jsplt == 1 ) THEN |
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294 | CALL ctl_warn( ' - isplt & jsplt are equal to 1', & |
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295 | & ' - the print control will be done over the whole domain' ) |
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296 | ENDIF |
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297 | ijsplt = isplt * jsplt ! total number of processors ijsplt |
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298 | ENDIF |
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299 | IF(lwp) WRITE(numout,*)' - The total number of processors over which the' |
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300 | IF(lwp) WRITE(numout,*)' print control will be done is ijsplt : ', ijsplt |
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301 | ! |
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302 | ! ! indices used for the SUM control |
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303 | IF( nictls+nictle+njctls+njctle == 0 ) THEN ! print control done over the default area |
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304 | lsp_area = .FALSE. |
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305 | ELSE ! print control done over a specific area |
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306 | lsp_area = .TRUE. |
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307 | IF( nictls < 1 .OR. nictls > jpiglo ) THEN |
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308 | CALL ctl_warn( ' - nictls must be 1<=nictls>=jpiglo, it is forced to 1' ) |
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309 | nictls = 1 |
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310 | ENDIF |
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311 | IF( nictle < 1 .OR. nictle > jpiglo ) THEN |
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312 | CALL ctl_warn( ' - nictle must be 1<=nictle>=jpiglo, it is forced to jpiglo' ) |
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313 | nictle = jpiglo |
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314 | ENDIF |
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315 | IF( njctls < 1 .OR. njctls > jpjglo ) THEN |
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316 | CALL ctl_warn( ' - njctls must be 1<=njctls>=jpjglo, it is forced to 1' ) |
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317 | njctls = 1 |
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318 | ENDIF |
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319 | IF( njctle < 1 .OR. njctle > jpjglo ) THEN |
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320 | CALL ctl_warn( ' - njctle must be 1<=njctle>=jpjglo, it is forced to jpjglo' ) |
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321 | njctle = jpjglo |
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322 | ENDIF |
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323 | ENDIF |
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324 | ENDIF |
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325 | ! |
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326 | IF( nbench == 1 ) THEN ! Benchmark |
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327 | SELECT CASE ( cp_cfg ) |
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328 | CASE ( 'gyre' ) ; CALL ctl_warn( ' The Benchmark is activated ' ) |
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329 | CASE DEFAULT ; CALL ctl_stop( ' The Benchmark is based on the GYRE configuration:', & |
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330 | & ' key_gyre must be used or set nbench = 0' ) |
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331 | END SELECT |
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332 | ENDIF |
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333 | ! |
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334 | IF( lk_c1d .AND. .NOT.lk_iomput ) CALL ctl_stop( 'nemo_ctl: The 1D configuration must be used ', & |
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335 | & 'with the IOM Input/Output manager. ' , & |
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336 | & 'Compile with key_iomput enabled' ) |
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337 | ! |
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338 | END SUBROUTINE nemo_ctl |
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339 | |
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340 | |
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341 | SUBROUTINE nemo_closefile |
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342 | !!---------------------------------------------------------------------- |
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343 | !! *** ROUTINE nemo_closefile *** |
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344 | !! |
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345 | !! ** Purpose : Close the files |
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346 | !!---------------------------------------------------------------------- |
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347 | ! |
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348 | IF ( lk_mpp ) CALL mppsync |
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349 | ! |
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350 | CALL iom_close ! close all input/output files managed by iom_* |
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351 | ! |
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352 | IF( numstp /= -1 ) CLOSE( numstp ) ! time-step file |
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353 | IF( numnam /= -1 ) CLOSE( numnam ) ! oce namelist |
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354 | IF( numout /= 6 ) CLOSE( numout ) ! standard model output file |
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355 | numout = 6 ! redefine numout in case it is used after this point... |
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356 | ! |
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357 | END SUBROUTINE nemo_closefile |
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358 | |
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359 | |
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360 | SUBROUTINE nemo_alloc |
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361 | !!---------------------------------------------------------------------- |
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362 | !! *** ROUTINE nemo_alloc *** |
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363 | !! |
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364 | !! ** Purpose : Allocate all the dynamic arrays of the OPA modules |
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365 | !! |
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366 | !! ** Method : |
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367 | !!---------------------------------------------------------------------- |
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368 | USE diawri, ONLY: dia_wri_alloc |
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369 | USE dom_oce, ONLY: dom_oce_alloc |
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370 | USE zdf_oce, ONLY: zdf_oce_alloc |
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371 | USE ldftra_oce, ONLY: ldftra_oce_alloc |
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372 | USE trc_oce, ONLY: trc_oce_alloc |
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373 | ! |
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374 | INTEGER :: ierr |
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375 | !!---------------------------------------------------------------------- |
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376 | ! |
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377 | ierr = oce_alloc () ! ocean |
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378 | ierr = ierr + dia_wri_alloc () |
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379 | ierr = ierr + dom_oce_alloc () ! ocean domain |
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380 | ierr = ierr + ldftra_oce_alloc() ! ocean lateral physics : tracers |
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381 | ierr = ierr + zdf_oce_alloc () ! ocean vertical physics |
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382 | ! |
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383 | ierr = ierr + lib_mpp_alloc (numout) ! mpp exchanges |
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384 | ierr = ierr + trc_oce_alloc () ! shared TRC / TRA arrays |
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385 | ! |
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386 | IF( lk_mpp ) CALL mpp_sum( ierr ) |
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387 | IF( ierr /= 0 ) CALL ctl_stop( 'STOP', 'nemo_alloc: unable to allocate standard ocean arrays' ) |
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388 | ! |
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389 | END SUBROUTINE nemo_alloc |
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390 | |
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391 | |
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392 | SUBROUTINE nemo_partition( num_pes ) |
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393 | !!---------------------------------------------------------------------- |
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394 | !! *** ROUTINE nemo_partition *** |
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395 | !! |
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396 | !! ** Purpose : |
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397 | !! |
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398 | !! ** Method : |
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399 | !!---------------------------------------------------------------------- |
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400 | INTEGER, INTENT(in) :: num_pes ! The number of MPI processes we have |
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401 | ! |
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402 | INTEGER, PARAMETER :: nfactmax = 20 |
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403 | INTEGER :: nfact ! The no. of factors returned |
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404 | INTEGER :: ierr ! Error flag |
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405 | INTEGER :: ji |
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406 | INTEGER :: idiff, mindiff, imin ! For choosing pair of factors that are closest in value |
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407 | INTEGER, DIMENSION(nfactmax) :: ifact ! Array of factors |
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408 | !!---------------------------------------------------------------------- |
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409 | |
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410 | ierr = 0 |
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411 | |
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412 | CALL factorise( ifact, nfactmax, nfact, num_pes, ierr ) |
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413 | |
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414 | IF( nfact <= 1 ) THEN |
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415 | WRITE (numout, *) 'WARNING: factorisation of number of PEs failed' |
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416 | WRITE (numout, *) ' : using grid of ',num_pes,' x 1' |
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417 | jpnj = 1 |
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418 | jpni = num_pes |
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419 | ELSE |
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420 | ! Search through factors for the pair that are closest in value |
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421 | mindiff = 1000000 |
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422 | imin = 1 |
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423 | DO ji = 1, nfact-1, 2 |
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424 | idiff = ABS( ifact(ji) - ifact(ji+1) ) |
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425 | IF( idiff < mindiff ) THEN |
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426 | mindiff = idiff |
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427 | imin = ji |
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428 | ENDIF |
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429 | END DO |
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430 | jpnj = ifact(imin) |
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431 | jpni = ifact(imin + 1) |
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432 | ENDIF |
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433 | ! |
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434 | jpnij = jpni*jpnj |
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435 | ! |
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436 | END SUBROUTINE nemo_partition |
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437 | |
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438 | |
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439 | SUBROUTINE factorise( kfax, kmaxfax, knfax, kn, kerr ) |
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440 | !!---------------------------------------------------------------------- |
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441 | !! *** ROUTINE factorise *** |
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442 | !! |
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443 | !! ** Purpose : return the prime factors of n. |
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444 | !! knfax factors are returned in array kfax which is of |
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445 | !! maximum dimension kmaxfax. |
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446 | !! ** Method : |
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447 | !!---------------------------------------------------------------------- |
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448 | INTEGER , INTENT(in ) :: kn, kmaxfax |
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449 | INTEGER , INTENT( out) :: kerr, knfax |
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450 | INTEGER, DIMENSION(kmaxfax), INTENT( out) :: kfax |
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451 | ! |
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452 | INTEGER :: ifac, jl, inu |
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453 | INTEGER, PARAMETER :: ntest = 14 |
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454 | INTEGER :: ilfax(ntest) |
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455 | ! |
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456 | ! lfax contains the set of allowed factors. |
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457 | data (ilfax(jl),jl=1,ntest) / 16384, 8192, 4096, 2048, 1024, 512, 256, & |
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458 | & 128, 64, 32, 16, 8, 4, 2 / |
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459 | !!---------------------------------------------------------------------- |
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460 | |
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461 | ! Clear the error flag and initialise output vars |
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462 | kerr = 0 |
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463 | kfax = 1 |
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464 | knfax = 0 |
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465 | |
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466 | ! Find the factors of n. |
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467 | IF( kn == 1 ) GOTO 20 |
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468 | |
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469 | ! nu holds the unfactorised part of the number. |
---|
470 | ! knfax holds the number of factors found. |
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471 | ! l points to the allowed factor list. |
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472 | ! ifac holds the current factor. |
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473 | |
---|
474 | inu = kn |
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475 | knfax = 0 |
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476 | |
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477 | DO jl = ntest, 1, -1 |
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478 | ! |
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479 | ifac = ilfax(jl) |
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480 | IF( ifac > inu ) CYCLE |
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481 | |
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482 | ! Test whether the factor will divide. |
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483 | |
---|
484 | IF( MOD(inu,ifac) == 0 ) THEN |
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485 | ! |
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486 | knfax = knfax + 1 ! Add the factor to the list |
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487 | IF( knfax > kmaxfax ) THEN |
---|
488 | kerr = 6 |
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489 | write (*,*) 'FACTOR: insufficient space in factor array ', knfax |
---|
490 | return |
---|
491 | ENDIF |
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492 | kfax(knfax) = ifac |
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493 | ! Store the other factor that goes with this one |
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494 | knfax = knfax + 1 |
---|
495 | kfax(knfax) = inu / ifac |
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496 | !WRITE (*,*) 'ARPDBG, factors ',knfax-1,' & ',knfax,' are ', kfax(knfax-1),' and ',kfax(knfax) |
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497 | ENDIF |
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498 | ! |
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499 | END DO |
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500 | |
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501 | 20 CONTINUE ! Label 20 is the exit point from the factor search loop. |
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502 | ! |
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503 | END SUBROUTINE factorise |
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504 | |
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505 | #if defined key_mpp_mpi |
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506 | SUBROUTINE nemo_northcomms |
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507 | !!====================================================================== |
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508 | !! *** ROUTINE nemo_northcomms *** |
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509 | !! nemo_northcomms : Setup for north fold exchanges with explicit peer to peer messaging |
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510 | !!===================================================================== |
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511 | !!---------------------------------------------------------------------- |
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512 | !! |
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513 | !! ** Purpose : Initialization of the northern neighbours lists. |
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514 | !!---------------------------------------------------------------------- |
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515 | !! 1.0 ! 2011-10 (A. C. Coward, NOCS & J. Donners, PRACE) |
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516 | !!---------------------------------------------------------------------- |
---|
517 | |
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518 | INTEGER :: ji, jj, jk, ij, jtyp ! dummy loop indices |
---|
519 | INTEGER :: ijpj ! number of rows involved in north-fold exchange |
---|
520 | INTEGER :: northcomms_alloc ! allocate return status |
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521 | REAL(wp), ALLOCATABLE, DIMENSION ( :,: ) :: znnbrs ! workspace |
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522 | LOGICAL, ALLOCATABLE, DIMENSION ( : ) :: lrankset ! workspace |
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523 | |
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524 | IF(lwp) WRITE(numout,*) |
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525 | IF(lwp) WRITE(numout,*) 'nemo_northcomms : Initialization of the northern neighbours lists' |
---|
526 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~' |
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527 | |
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528 | !!---------------------------------------------------------------------- |
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529 | ALLOCATE( znnbrs(jpi,jpj), stat = northcomms_alloc ) |
---|
530 | ALLOCATE( lrankset(jpnij), stat = northcomms_alloc ) |
---|
531 | IF( northcomms_alloc /= 0 ) THEN |
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532 | WRITE(numout,cform_war) |
---|
533 | WRITE(numout,*) 'northcomms_alloc : failed to allocate arrays' |
---|
534 | CALL ctl_stop( 'STOP', 'nemo_northcomms : unable to allocate temporary arrays' ) |
---|
535 | ENDIF |
---|
536 | nsndto = 0 |
---|
537 | isendto = -1 |
---|
538 | ijpj = 4 |
---|
539 | ! |
---|
540 | ! This routine has been called because ln_nnogather has been set true ( nammpp ) |
---|
541 | ! However, these first few exchanges have to use the mpi_allgather method to |
---|
542 | ! establish the neighbour lists to use in subsequent peer to peer exchanges. |
---|
543 | ! Consequently, set l_north_nogather to be false here and set it true only after |
---|
544 | ! the lists have been established. |
---|
545 | ! |
---|
546 | l_north_nogather = .FALSE. |
---|
547 | ! |
---|
548 | ! Exchange and store ranks on northern rows |
---|
549 | |
---|
550 | DO jtyp = 1,4 |
---|
551 | |
---|
552 | lrankset = .FALSE. |
---|
553 | znnbrs = narea |
---|
554 | SELECT CASE (jtyp) |
---|
555 | CASE(1) |
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556 | CALL lbc_lnk( znnbrs, 'T', 1. ) ! Type 1: T,W-points |
---|
557 | CASE(2) |
---|
558 | CALL lbc_lnk( znnbrs, 'U', 1. ) ! Type 2: U-point |
---|
559 | CASE(3) |
---|
560 | CALL lbc_lnk( znnbrs, 'V', 1. ) ! Type 3: V-point |
---|
561 | CASE(4) |
---|
562 | CALL lbc_lnk( znnbrs, 'F', 1. ) ! Type 4: F-point |
---|
563 | END SELECT |
---|
564 | |
---|
565 | IF ( njmppt(narea) .EQ. MAXVAL( njmppt ) ) THEN |
---|
566 | DO jj = nlcj-ijpj+1, nlcj |
---|
567 | ij = jj - nlcj + ijpj |
---|
568 | DO ji = 1,jpi |
---|
569 | IF ( INT(znnbrs(ji,jj)) .NE. 0 .AND. INT(znnbrs(ji,jj)) .NE. narea ) & |
---|
570 | & lrankset(INT(znnbrs(ji,jj))) = .true. |
---|
571 | END DO |
---|
572 | END DO |
---|
573 | |
---|
574 | DO jj = 1,jpnij |
---|
575 | IF ( lrankset(jj) ) THEN |
---|
576 | nsndto(jtyp) = nsndto(jtyp) + 1 |
---|
577 | IF ( nsndto(jtyp) .GT. jpmaxngh ) THEN |
---|
578 | CALL ctl_stop( ' Too many neighbours in nemo_northcomms ', & |
---|
579 | & ' jpmaxngh will need to be increased ') |
---|
580 | ENDIF |
---|
581 | isendto(nsndto(jtyp),jtyp) = jj-1 ! narea converted to MPI rank |
---|
582 | ENDIF |
---|
583 | END DO |
---|
584 | ENDIF |
---|
585 | |
---|
586 | END DO |
---|
587 | |
---|
588 | ! |
---|
589 | ! Type 5: I-point |
---|
590 | ! |
---|
591 | ! ICE point exchanges may involve some averaging. The neighbours list is |
---|
592 | ! built up using two exchanges to ensure that the whole stencil is covered. |
---|
593 | ! lrankset should not be reset between these 'J' and 'K' point exchanges |
---|
594 | |
---|
595 | jtyp = 5 |
---|
596 | lrankset = .FALSE. |
---|
597 | znnbrs = narea |
---|
598 | CALL lbc_lnk( znnbrs, 'J', 1. ) ! first ice U-V point |
---|
599 | |
---|
600 | IF ( njmppt(narea) .EQ. MAXVAL( njmppt ) ) THEN |
---|
601 | DO jj = nlcj-ijpj+1, nlcj |
---|
602 | ij = jj - nlcj + ijpj |
---|
603 | DO ji = 1,jpi |
---|
604 | IF ( INT(znnbrs(ji,jj)) .NE. 0 .AND. INT(znnbrs(ji,jj)) .NE. narea ) & |
---|
605 | & lrankset(INT(znnbrs(ji,jj))) = .true. |
---|
606 | END DO |
---|
607 | END DO |
---|
608 | ENDIF |
---|
609 | |
---|
610 | znnbrs = narea |
---|
611 | CALL lbc_lnk( znnbrs, 'K', 1. ) ! second ice U-V point |
---|
612 | |
---|
613 | IF ( njmppt(narea) .EQ. MAXVAL( njmppt )) THEN |
---|
614 | DO jj = nlcj-ijpj+1, nlcj |
---|
615 | ij = jj - nlcj + ijpj |
---|
616 | DO ji = 1,jpi |
---|
617 | IF ( INT(znnbrs(ji,jj)) .NE. 0 .AND. INT(znnbrs(ji,jj)) .NE. narea ) & |
---|
618 | & lrankset( INT(znnbrs(ji,jj))) = .true. |
---|
619 | END DO |
---|
620 | END DO |
---|
621 | |
---|
622 | DO jj = 1,jpnij |
---|
623 | IF ( lrankset(jj) ) THEN |
---|
624 | nsndto(jtyp) = nsndto(jtyp) + 1 |
---|
625 | IF ( nsndto(jtyp) .GT. jpmaxngh ) THEN |
---|
626 | CALL ctl_stop( ' Too many neighbours in nemo_northcomms ', & |
---|
627 | & ' jpmaxngh will need to be increased ') |
---|
628 | ENDIF |
---|
629 | isendto(nsndto(jtyp),jtyp) = jj-1 ! narea converted to MPI rank |
---|
630 | ENDIF |
---|
631 | END DO |
---|
632 | ! |
---|
633 | ! For northern row areas, set l_north_nogather so that all subsequent exchanges |
---|
634 | ! can use peer to peer communications at the north fold |
---|
635 | ! |
---|
636 | l_north_nogather = .TRUE. |
---|
637 | ! |
---|
638 | ENDIF |
---|
639 | DEALLOCATE( znnbrs ) |
---|
640 | DEALLOCATE( lrankset ) |
---|
641 | |
---|
642 | END SUBROUTINE nemo_northcomms |
---|
643 | #else |
---|
644 | SUBROUTINE nemo_northcomms ! Dummy routine |
---|
645 | WRITE(*,*) 'nemo_northcomms: You should not have seen this print! error?' |
---|
646 | END SUBROUTINE nemo_northcomms |
---|
647 | #endif |
---|
648 | !!====================================================================== |
---|
649 | END MODULE nemogcm |
---|