1 | ! ============================================================================================================================== |
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2 | ! MODULE : mod_orchidee_mpi_data |
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3 | ! |
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4 | ! CONTACT : orchidee-help _at_ listes.ipsl.fr |
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5 | ! |
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6 | ! LICENCE : IPSL (2006) |
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7 | ! This software is governed by the CeCILL licence see ORCHIDEE/ORCHIDEE_CeCILL.LIC |
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8 | ! |
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9 | !>\BRIEF All routines needed for the initialization of the MPI parallelization of Orchidee (coupled and offline) |
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10 | !! |
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11 | !!\n DESCRIPTION : Definition and allocation of parallel datas for MPI. |
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12 | !! Initialization of parallel or sequentiel IOs. |
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13 | !! Definition of Load Balancing functions. |
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14 | !! |
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15 | !! RECENT CHANGE(S): None |
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16 | !! |
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17 | !! REFERENCES(S) : None |
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18 | !! |
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19 | !! SVN : |
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20 | !! $HeadURL$ |
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21 | !! $Date$ |
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22 | !! $Revision$ |
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23 | !! \n |
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24 | !_ ================================================================================================================================ |
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25 | |
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26 | |
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27 | MODULE mod_orchidee_mpi_data |
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28 | |
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29 | !- |
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30 | USE defprec |
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31 | USE ioipsl_para |
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32 | USE mod_orchidee_para_var |
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33 | |
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34 | IMPLICIT NONE |
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35 | |
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36 | !- |
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37 | #include "src_parallel.h" |
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38 | !- |
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39 | !- |
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40 | |
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41 | CONTAINS |
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42 | |
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43 | !! ============================================================================================================================= |
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44 | !! SUBROUTINE: Init_orchidee_mpi |
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45 | !! |
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46 | !>\BRIEF Initialization of the mpi parallelization in ORCHIDEE offline mode. |
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47 | !! |
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48 | !! DESCRIPTION: Initialization of the mpi parallelization in ORCHIDEE offline mode. |
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49 | !! |
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50 | !! \n |
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51 | !_ ============================================================================================================================== |
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52 | SUBROUTINE Init_orchidee_mpi(communicator, usexios) |
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53 | |
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54 | |
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55 | IMPLICIT NONE |
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56 | INTEGER, OPTIONAL, INTENT(in) :: communicator |
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57 | LOGICAL, OPTIONAL, INTENT(in) :: usexios |
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58 | INTEGER :: COMM, COMM_in |
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59 | INTEGER :: ierr |
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60 | LOGICAL :: xios_orchidee_ok !! Local variable read from run.def |
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61 | LOGICAL :: ismpiinit |
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62 | |
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63 | #ifdef CPP_PARA |
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64 | INCLUDE 'mpif.h' |
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65 | #endif |
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66 | IF ( .NOT. PRESENT(usexios) ) THEN |
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67 | ! Read XIOS_ORCHIDEE_OK from run.def. In this module, due to cyclic dependancies |
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68 | ! the variable can not be used from module xios_orchidee. |
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69 | xios_orchidee_ok=.TRUE. |
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70 | CALL getin('XIOS_ORCHIDEE_OK',xios_orchidee_ok) |
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71 | ELSE |
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72 | xios_orchidee_ok = usexios |
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73 | ENDIF |
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74 | |
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75 | #ifdef CPP_PARA |
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76 | IF ( PRESENT(communicator) ) THEN |
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77 | COMM_in=communicator |
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78 | ELSE |
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79 | COMM_in=MPI_COMM_WORLD |
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80 | ENDIF |
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81 | ! |
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82 | ! This functions tests if MPI is initialized and thus determines if ORCHIDEE |
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83 | ! is used in conjunction with OASIS who would have initialized MPI and provided |
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84 | ! a local communicator. |
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85 | ! |
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86 | |
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87 | CALL MPI_INITIALIZED(ismpiinit, ierr) |
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88 | |
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89 | IF ( xios_orchidee_ok ) THEN |
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90 | IF ( .NOT. ismpiinit ) THEN |
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91 | CALL MPI_INIT(ierr) |
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92 | ENDIF |
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93 | CALL xios_orchidee_comm_init(COMM_in, COMM) |
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94 | ELSE |
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95 | IF ( .NOT. ismpiinit ) THEN |
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96 | CALL MPI_INIT(ierr) |
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97 | ENDIF |
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98 | COMM=COMM_in |
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99 | ENDIF |
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100 | CALL MPI_COMM_SIZE(COMM,mpi_size,ierr) |
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101 | CALL MPI_COMM_RANK(COMM,mpi_rank,ierr) |
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102 | is_ok_mpi=.TRUE. |
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103 | #else |
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104 | mpi_rank=0 |
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105 | mpi_size=1 |
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106 | is_ok_mpi=.FALSE. |
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107 | ! It is not possible to use XIOS without MPI |
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108 | WRITE(numout,*) 'XIOS cannot be run without MPI. xios_orchidee_ok is set to false.' |
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109 | xios_orchidee_ok=.FALSE. |
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110 | #endif |
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111 | |
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112 | mpi_rank_root=0 |
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113 | |
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114 | IF (mpi_rank==mpi_rank_root) THEN |
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115 | is_mpi_root=.TRUE. |
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116 | ELSE |
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117 | is_mpi_root=.FALSE. |
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118 | ENDIF |
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119 | |
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120 | CALL Init_const_mpi(COMM) |
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121 | |
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122 | END SUBROUTINE Init_orchidee_mpi |
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123 | |
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124 | !! ============================================================================================================================== |
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125 | !! SUBROUTINE : xios_orchidee_comm_init |
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126 | !! |
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127 | !>\BRIEF Get the MPI communicator. |
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128 | !! |
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129 | !! DESCRIPTION :\n First call to XIOS to get the MPI communicator. |
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130 | !! Note that it is XIOS that initialize the MPI communicator. |
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131 | !! This subroutine is only called in ORCHIDEE offline mode. When running in coupled mode, the |
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132 | !! atmospheric model must initlialize XIOS at the same time as initializing MPI. |
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133 | !! \n |
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134 | !_ ================================================================================================================================ |
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135 | |
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136 | SUBROUTINE xios_orchidee_comm_init(comm_in, comm_local) |
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137 | #ifdef XIOS |
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138 | USE xios |
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139 | #endif |
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140 | ! |
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141 | !! 0. Variable and parameter declaration |
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142 | ! |
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143 | !! Output variables |
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144 | INTEGER, INTENT(IN) :: comm_in |
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145 | INTEGER, INTENT(OUT) :: comm_local |
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146 | CHARACTER(len=*),PARAMETER :: id="client" !! Id for initialization of ORCHIDEE in XIOS |
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147 | |
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148 | !_ ================================================================================================================================ |
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149 | #ifdef CPP_PARA |
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150 | INCLUDE 'mpif.h' |
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151 | #endif |
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152 | |
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153 | IF (is_omp_root) THEN |
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154 | #ifdef XIOS |
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155 | IF ( comm_in .EQ. MPI_COMM_WORLD ) THEN |
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156 | CALL xios_initialize(id,return_comm=comm_local) |
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157 | ELSE |
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158 | CALL xios_initialize(id,local_comm=comm_in,return_comm=comm_local) |
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159 | ENDIF |
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160 | #else |
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161 | ! Write error messages and stop the model |
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162 | WRITE(numout,*) 'Preprocessing key XIOS is missing to run ORCHIDEE with XIOS' |
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163 | WRITE(numout,*) 'Recompile with preprocessing flag XIOS or set XIOS_ORCHIDEE_OK=n in run.def' |
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164 | WRITE(numout,*) 'Fatal error from ORCHIDEE. STOP in xios_orchidee_comm_init' |
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165 | #ifdef CPP_PARA |
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166 | CALL MPI_ABORT(3) |
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167 | #endif |
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168 | STOP 1 |
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169 | #endif |
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170 | |
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171 | END IF |
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172 | END SUBROUTINE xios_orchidee_comm_init |
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173 | |
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174 | |
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175 | !! ============================================================================================================================== |
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176 | !! SUBROUTINE : xios_orchidee_finalize |
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177 | !! |
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178 | !>\BRIEF Last call to XIOS for finalization. |
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179 | !! |
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180 | !! DESCRIPTION :\n Last call to XIOS for finalization of the orchidee context and XIOS. |
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181 | !! This subroutine is called only when ORCHIDEE is run in offline mode. In coupled mode it is the atmospheric |
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182 | !! model that finalizes XIOS. In that case, the context orchidee must be finalized using the |
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183 | !! subroutine xios_orchidee_context_finalize |
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184 | !! |
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185 | !! \n |
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186 | !_ ================================================================================================================================ |
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187 | |
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188 | SUBROUTINE xios_orchidee_finalize |
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189 | #ifdef XIOS |
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190 | USE xios, ONLY : xios_context_finalize, xios_finalize |
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191 | #endif |
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192 | LOGICAL :: xios_orchidee_ok ! Local variable read from run.def |
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193 | |
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194 | ! Read XIOS_ORCHIDEE_OK from run.def. In this module, due to cyclic dependancies |
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195 | ! the variable can not be used from module xios_orchidee. |
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196 | xios_orchidee_ok=.TRUE. |
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197 | IF (is_omp_root) CALL getin('XIOS_ORCHIDEE_OK',xios_orchidee_ok) |
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198 | !_ ================================================================================================================================ |
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199 | |
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200 | IF (xios_orchidee_ok .AND. is_omp_root) THEN |
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201 | #ifdef XIOS |
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202 | CALL xios_context_finalize() |
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203 | CALL xios_finalize() |
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204 | #endif |
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205 | END IF |
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206 | END SUBROUTINE xios_orchidee_finalize |
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207 | |
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208 | |
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209 | |
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210 | SUBROUTINE Init_orchidee_mpi_data(arg_nbp_mpi,arg_kindex_mpi,arg_offset_mpi,COMM) |
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211 | |
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212 | IMPLICIT NONE |
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213 | #ifdef CPP_PARA |
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214 | INCLUDE 'mpif.h' |
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215 | #endif |
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216 | INTEGER, INTENT(IN) :: arg_nbp_mpi |
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217 | INTEGER, INTENT(IN) :: arg_kindex_mpi(arg_nbp_mpi) |
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218 | INTEGER, INTENT(IN) :: arg_offset_mpi |
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219 | INTEGER, INTENT(IN) :: COMM |
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220 | |
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221 | INTEGER :: i |
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222 | |
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223 | #ifdef CPP_PARA |
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224 | INTEGER :: ierr |
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225 | is_ok_mpi=.TRUE. |
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226 | #else |
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227 | is_ok_mpi=.FALSE. |
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228 | #endif |
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229 | |
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230 | ! Initialization of MPI_COMM_ORCH |
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231 | CALL init_const_mpi(COMM) |
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232 | IF (is_ok_mpi) THEN |
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233 | #ifdef CPP_PARA |
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234 | CALL MPI_COMM_SIZE(MPI_COMM_ORCH,mpi_size,ierr) |
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235 | CALL MPI_COMM_RANK(MPI_COMM_ORCH,mpi_rank,ierr) |
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236 | #endif |
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237 | ELSE |
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238 | mpi_size=1 |
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239 | mpi_rank=0 |
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240 | ENDIF |
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241 | |
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242 | IF (mpi_rank == 0) THEN |
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243 | mpi_rank_root = 0 |
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244 | is_mpi_root = .true. |
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245 | ENDIF |
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246 | |
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247 | ! Test if there is enough land grid cells on each process MPI. |
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248 | ! At least 2 grid cells are needed for each process if running in parallel. Stop if this is not the case. |
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249 | IF ( arg_nbp_mpi < 1 ) THEN |
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250 | PRINT*,'Init_orchidee_mpi_data: nbp_mpi(number of grid-cells for current MPI process)=',arg_nbp_mpi |
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251 | PRINT*,'nbp_mpi=0 is not possible. It must be 1 or bigger for each MPI process. Stop now.' |
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252 | CALL ipslerr_p(3, "Init_orchidee_mpi_data","Not all MPI processes has enough land grid cells",& |
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253 | "Make the region bigger or use a lower number of MPI processes.","") |
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254 | ELSE IF (arg_nbp_mpi == 1 .AND. mpi_size > 1) THEN |
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255 | CALL ipslerr_p(1, "Init_orchidee_mpi_data","nbp=1 for current MPI process",& |
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256 | "This can be a problem in some case.", & |
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257 | "If the model crashes, then make the region bigger or use a lower number of MPI processes.") |
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258 | END IF |
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259 | |
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260 | ALLOCATE(nbp_mpi_para(0:mpi_size-1)) |
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261 | ALLOCATE(nbp_mpi_para_begin(0:mpi_size-1)) |
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262 | ALLOCATE(nbp_mpi_para_end(0:mpi_size-1)) |
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263 | ALLOCATE(jj_para_nb(0:mpi_size-1)) |
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264 | ALLOCATE(jj_para_begin(0:mpi_size-1)) |
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265 | ALLOCATE(jj_para_end(0:mpi_size-1)) |
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266 | ALLOCATE(ii_para_begin(0:mpi_size-1)) |
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267 | ALLOCATE(ii_para_end(0:mpi_size-1)) |
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268 | ALLOCATE(ij_para_nb(0:mpi_size-1)) |
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269 | ALLOCATE(ij_para_begin(0:mpi_size-1)) |
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270 | ALLOCATE(ij_para_end(0:mpi_size-1)) |
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271 | |
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272 | |
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273 | nbp_mpi=arg_nbp_mpi |
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274 | ALLOCATE(kindex_mpi(nbp_mpi)) |
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275 | kindex_mpi(:)=arg_kindex_mpi(:) |
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276 | |
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277 | offset_mpi=arg_offset_mpi |
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278 | |
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279 | IF (is_ok_mpi) THEN |
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280 | #ifdef CPP_PARA |
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281 | CALL MPI_AllGather(nbp_mpi,1,MPI_INT_ORCH,nbp_mpi_para,1,MPI_INT_ORCH,MPI_COMM_ORCH,ierr) |
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282 | #endif |
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283 | ELSE |
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284 | nbp_mpi_para(0)=nbp_mpi |
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285 | ENDIF |
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286 | |
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287 | nbp_mpi_para_begin(0)=1 |
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288 | nbp_mpi_para_end(0)=nbp_mpi_para(0) |
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289 | DO i=1,mpi_size-1 |
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290 | nbp_mpi_para_begin(i)=nbp_mpi_para_end(i-1)+1 |
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291 | nbp_mpi_para_end(i)=nbp_mpi_para_begin(i)+nbp_mpi_para(i)-1 |
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292 | ENDDO |
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293 | nbp_mpi_begin=nbp_mpi_para_begin(mpi_rank) |
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294 | nbp_mpi_end=nbp_mpi_para_end(mpi_rank) |
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295 | |
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296 | |
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297 | IF (mpi_rank==mpi_size-1) THEN |
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298 | ij_end=iim_g*jjm_g |
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299 | ELSE |
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300 | ij_end=kindex_mpi(nbp_mpi)+offset_mpi |
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301 | ENDIF |
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302 | |
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303 | IF (is_ok_mpi) THEN |
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304 | #ifdef CPP_PARA |
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305 | CALL MPI_Allgather(ij_end,1,MPI_INT_ORCH,ij_para_end,1,MPI_INT_ORCH,MPI_COMM_ORCH,ierr) |
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306 | #endif |
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307 | ELSE |
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308 | ij_para_end(0)=ij_end |
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309 | ENDIF |
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310 | |
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311 | ij_para_begin(0)=1 |
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312 | ij_para_nb(0)=ij_para_end(0)-ij_para_begin(0)+1 |
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313 | |
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314 | DO i=1,mpi_size-1 |
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315 | ij_para_begin(i)=ij_para_end(i-1)+1 |
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316 | ij_para_nb(i)=ij_para_end(i)-ij_para_begin(i)+1 |
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317 | ENDDO |
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318 | |
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319 | DO i=0,mpi_size-1 |
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320 | jj_para_begin(i)=(ij_para_begin(i)-1)/iim_g + 1 |
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321 | jj_para_end(i)=(ij_para_end(i)-1)/iim_g + 1 |
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322 | jj_para_nb(i)=jj_para_end(i)-jj_para_begin(i)+1 |
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323 | |
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324 | ii_para_begin(i)=MOD(ij_para_begin(i)-1,iim_g)+1 |
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325 | ii_para_end(i)=MOD(ij_para_end(i)-1,iim_g)+1 |
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326 | ENDDO |
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327 | |
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328 | |
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329 | ij_nb=ij_para_nb(mpi_rank) |
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330 | ij_begin=ij_para_begin(mpi_rank) |
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331 | ij_end=ij_para_end(mpi_rank) |
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332 | |
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333 | jj_nb=jj_para_nb(mpi_rank) |
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334 | jj_begin=jj_para_begin(mpi_rank) |
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335 | jj_end=jj_para_end(mpi_rank) |
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336 | |
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337 | ii_begin=ii_para_begin(mpi_rank) |
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338 | ii_end=ii_para_end(mpi_rank) |
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339 | |
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340 | |
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341 | CALL print_mpi_data |
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342 | |
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343 | |
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344 | END SUBROUTINE Init_orchidee_mpi_data |
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345 | |
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346 | !! ============================================================================================================================= |
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347 | !! SUBROUTINE: init_const_mpi |
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348 | !! |
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349 | !>\BRIEF Initialization of some constants related to the MPI parallelization |
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350 | !! |
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351 | !! DESCRIPTION: Initialization of some constants related to the MPI parallelization |
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352 | !! |
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353 | !! \n |
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354 | !_ ============================================================================================================================== |
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355 | SUBROUTINE init_const_mpi(COMM) |
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356 | |
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357 | IMPLICIT NONE |
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358 | INTEGER :: COMM |
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359 | |
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360 | #ifdef CPP_PARA |
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361 | INCLUDE 'mpif.h' |
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362 | |
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363 | MPI_COMM_ORCH=COMM |
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364 | |
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365 | IF (i_std==i_4) THEN |
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366 | MPI_INT_ORCH=MPI_INTEGER4 |
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367 | ELSEIF (i_std==i_8) THEN |
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368 | MPI_INT_ORCH=MPI_INTEGER8 |
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369 | ELSE |
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370 | MPI_INT_ORCH=MPI_INTEGER |
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371 | ENDIF |
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372 | |
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373 | IF (r_std==r_4) THEN |
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374 | MPI_REAL_ORCH=MPI_REAL4 |
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375 | ELSEIF (r_std==r_8) THEN |
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376 | MPI_REAL_ORCH=MPI_REAL8 |
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377 | ELSE |
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378 | MPI_REAL_ORCH=MPI_REAL |
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379 | ENDIF |
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380 | #endif |
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381 | |
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382 | END SUBROUTINE init_const_mpi |
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383 | |
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384 | !! ============================================================================================================================= |
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385 | !! SUBROUTINE: Finalize_mpi |
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386 | !! |
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387 | !>\BRIEF Close the MPI parallelization |
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388 | !! |
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389 | !! DESCRIPTION: Close the MPI parallelization. The context XIOS will be closed before call to MPI_finalize routine |
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390 | !! |
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391 | !! \n |
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392 | !_ ============================================================================================================================== |
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393 | SUBROUTINE Finalize_mpi |
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394 | |
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395 | IMPLICIT NONE |
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396 | #ifdef CPP_PARA |
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397 | include 'mpif.h' |
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398 | INTEGER :: ierr |
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399 | |
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400 | CALL xios_orchidee_finalize |
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401 | |
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402 | CALL MPI_FINALIZE(ierr) |
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403 | #endif |
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404 | |
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405 | END SUBROUTINE Finalize_mpi |
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406 | |
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407 | !! ============================================================================================================================= |
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408 | !! SUBROUTINE: print_mpi_data |
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409 | !! |
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410 | !>\BRIEF Print all data specific to MPI parallelization of ORCHIDEE |
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411 | !! |
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412 | !! DESCRIPTION: Print all data specific to MPI parallelization of ORCHIDEE |
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413 | !! |
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414 | !! \n |
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415 | !_ ============================================================================================================================== |
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416 | SUBROUTINE print_mpi_data |
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417 | |
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418 | IMPLICIT NONE |
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419 | |
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420 | WRITE(numout,*) '==== MPI DOMAIN ====' |
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421 | WRITE(numout,*) ' ---------- ' |
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422 | WRITE(numout,*) 'mpi_size',mpi_size |
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423 | WRITE(numout,*) 'mpi_rank',mpi_rank |
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424 | WRITE(numout,*) 'is_mpi_root',is_mpi_root |
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425 | WRITE(numout,*) 'mpi_rank_root',mpi_rank_root |
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426 | |
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427 | WRITE(numout,*) 'nbp_mpi_begin=',nbp_mpi_begin |
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428 | WRITE(numout,*) 'nbp_mpi_end =',nbp_mpi_end |
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429 | WRITE(numout,*) 'nbp_mpi=',nbp_mpi |
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430 | |
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431 | WRITE(numout,*) 'ij_begin=',ij_begin |
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432 | WRITE(numout,*) 'ij_end=',ij_end |
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433 | WRITE(numout,*) 'ij_nb=',ij_nb |
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434 | WRITE(numout,*) 'jj_begin=',jj_begin |
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435 | WRITE(numout,*) 'jj_end=',jj_end |
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436 | WRITE(numout,*) 'jj_nb=',jj_nb |
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437 | WRITE(numout,*) 'ii_begin=',ii_begin |
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438 | WRITE(numout,*) 'ii_end=',ii_end |
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439 | |
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440 | WRITE(numout,*) 'offset_mpi',offset_mpi |
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441 | WRITE(numout,*) 'nbp_mpi_para_begin=',nbp_mpi_para_begin |
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442 | WRITE(numout,*) 'nbp_mpi_para_end =',nbp_mpi_para_end |
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443 | WRITE(numout,*) 'nbp_mpi_para=',nbp_mpi_para |
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444 | |
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445 | WRITE(numout,*) 'ij_para_begin=',ij_para_begin |
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446 | WRITE(numout,*) 'ij_para_end=',ij_para_end |
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447 | WRITE(numout,*) 'ij_para_nb=',ij_para_nb |
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448 | WRITE(numout,*) 'jj_para_begin=',jj_para_begin |
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449 | WRITE(numout,*) 'jj_para_end=',jj_para_end |
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450 | WRITE(numout,*) 'jj_para_nb=',jj_para_nb |
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451 | WRITE(numout,*) 'ii_para_begin=',ii_para_begin |
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452 | WRITE(numout,*) 'ii_para_end=',ii_para_end |
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453 | |
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454 | END SUBROUTINE print_mpi_data |
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455 | |
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456 | !! ============================================================================================================================= |
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457 | !! SUBROUTINE: Read_Load_balance |
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458 | !! |
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459 | !>\BRIEF Read load balance file. |
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460 | !! |
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461 | !! DESCRIPTION: Read load balance file. This is only done in offline mode. |
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462 | !! The load balance file contains information about the MPI partitionning on the different processes. |
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463 | !! |
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464 | !! \n |
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465 | !_ ============================================================================================================================== |
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466 | SUBROUTINE Read_Load_balance(NbPoints,Nbpoints_loc) |
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467 | |
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468 | IMPLICIT NONE |
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469 | INTEGER,INTENT(IN) :: NbPoints |
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470 | INTEGER,INTENT(OUT) :: Nbpoints_loc(0:mpi_size-1) |
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471 | INTEGER :: i,s |
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472 | INTEGER :: ierr |
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473 | |
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474 | #ifdef CPP_PARA |
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475 | CHARACTER(len=255) :: filename='Load_balance_orchidee.dat' |
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476 | INTEGER :: j |
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477 | INTEGER :: unit_number=10 |
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478 | #endif |
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479 | |
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480 | #ifdef CPP_PARA |
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481 | OPEN(UNIT=unit_number,FILE=trim(filename),STATUS='old',FORM='formatted',IOSTAT=ierr) |
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482 | #else |
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483 | ierr=1 |
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484 | #endif |
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485 | Nbpoints_loc(:) = 0 |
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486 | |
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487 | s=0 |
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488 | #ifdef CPP_PARA |
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489 | IF (ierr==0) THEN |
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490 | i=0 |
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491 | !- Reading for any balancing file (even with a bad structure) |
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492 | DO WHILE (i < mpi_size .AND. ierr == 0) |
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493 | READ (unit_number,*,IOSTAT=ierr) j,Nbpoints_loc(i) |
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494 | s=s+Nbpoints_loc(i) |
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495 | i=i+1 |
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496 | ENDDO |
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497 | CLOSE(unit_number) |
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498 | ENDIF |
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499 | #endif |
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500 | |
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501 | !- Correction of bad balancing file (or an empty file) => same nb of points for each procs |
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502 | IF (ierr/=0 .OR. s/=Nbpoints) THEN |
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503 | DO i=0,mpi_size-1 |
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504 | Nbpoints_loc(i)=Nbpoints/mpi_size |
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505 | IF (MOD(Nbpoints,mpi_size) > i) Nbpoints_loc(i)=Nbpoints_loc(i)+1 |
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506 | ENDDO |
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507 | ENDIF |
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508 | |
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509 | END SUBROUTINE Read_Load_balance |
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510 | |
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511 | !! ============================================================================================================================= |
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512 | !! SUBROUTINE: Write_Load_balance |
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513 | !! |
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514 | !>\BRIEF Write the load balance file. |
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515 | !! |
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516 | !! DESCRIPTION: Write the load balance file. This is only done in offline mode. |
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517 | !! The load balance file contains information about the MPI partitionning on the different processes. |
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518 | !! |
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519 | !! \n |
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520 | !_ ============================================================================================================================== |
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521 | SUBROUTINE Write_Load_balance(times) |
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522 | IMPLICIT NONE |
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523 | REAL,INTENT(IN) :: times |
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524 | |
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525 | CHARACTER(len=255) :: filename='Load_balance_orchidee.dat' |
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526 | INTEGER :: unit_number=10 |
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527 | INTEGER :: i,ierr |
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528 | REAL :: All_Times(0:mpi_size-1) |
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529 | REAL :: average |
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530 | REAL :: efficiency |
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531 | INTEGER :: dp,S |
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532 | INTEGER :: New_nbpoints(0:mpi_size-1) |
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533 | |
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534 | IF (is_ok_mpi) THEN |
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535 | #ifdef CPP_PARA |
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536 | CALL MPI_GATHER(times,1,MPI_REAL_ORCH,All_times,1,MPI_REAL_ORCH,mpi_rank_root,MPI_COMM_ORCH,ierr) |
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537 | #endif |
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538 | ELSE |
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539 | All_times(:)=times |
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540 | ENDIF |
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541 | |
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542 | IF (is_mpi_root) WRITE(numout,*) 'ALL_times',All_times |
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543 | |
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544 | IF (is_mpi_root) THEN |
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545 | |
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546 | OPEN(UNIT=unit_number,FILE=trim(filename),STATUS='replace',FORM='formatted',IOSTAT=ierr) |
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547 | |
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548 | average=sum(All_times(:))/mpi_size |
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549 | DO i=0,mpi_size-1 |
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550 | efficiency=All_times(i)/nbp_mpi_para(i) |
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551 | New_nbpoints(i)=Nbp_mpi_para(i)-(All_times(i)-average)/efficiency |
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552 | ENDDO |
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553 | |
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554 | S=sum(new_nbpoints(:)) |
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555 | dp=nbp_glo-S |
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556 | |
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557 | IF ( dp > 0 ) THEN |
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558 | DO WHILE ( dp > 0 ) |
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559 | New_nbpoints(MOD(dp,mpi_size))=New_nbpoints(MOD(dp,mpi_size))+1 |
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560 | dp=dp-1 |
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561 | ENDDO |
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562 | ELSE |
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563 | dp=-dp |
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564 | DO WHILE ( dp > 0 ) |
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565 | New_nbpoints(MOD(dp,mpi_size))=New_nbpoints(MOD(dp,mpi_size))-1 |
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566 | dp=dp-1 |
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567 | ENDDO |
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568 | ENDIF |
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569 | |
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570 | |
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571 | ! If this algorithm diverge, we use previous repartition. |
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572 | IF ( ANY(New_nbpoints(:) .LE. 0) ) THEN |
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573 | New_nbpoints(:)=Nbp_mpi_para(:) |
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574 | ENDIF |
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575 | |
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576 | DO i=0,mpi_size-1 |
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577 | WRITE(Unit_number,*) i,New_nbpoints(i) |
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578 | ENDDO |
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579 | CLOSE(Unit_number) |
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580 | ENDIF |
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581 | |
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582 | END SUBROUTINE Write_Load_Balance |
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583 | |
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584 | END MODULE mod_orchidee_mpi_data |
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585 | |
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586 | #include "mpi_dummy.h" |
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