1 | #if defined key_mpp_mpi |
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2 | #if defined key_sp |
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3 | #define mpivar mpi_real |
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4 | #else |
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5 | #define mpivar mpi_double_precision |
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6 | #endif |
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7 | #endif |
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8 | MODULE mppallgatherv |
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9 | !!====================================================================== |
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10 | !! *** MODULE mppallgatherv *** |
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11 | !! NEMO: MPP allgatherv routines |
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12 | !!====================================================================== |
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13 | |
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14 | !!---------------------------------------------------------------------- |
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15 | !! mpp_gatherv : Gather a real array on all processors |
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16 | !!---------------------------------------------------------------------- |
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17 | !! * Modules used |
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18 | USE par_kind, ONLY : & ! Precision variables |
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19 | & wp |
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20 | USE par_oce, ONLY : & ! Ocean parameters |
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21 | & jpnij |
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22 | #if defined key_mpp_mpi |
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23 | USE lib_mpp, ONLY : & ! MPP library |
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24 | & mpi_comm_opa |
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25 | #endif |
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26 | |
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27 | IMPLICIT NONE |
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28 | |
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29 | !! * Routine accessibility |
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30 | PRIVATE |
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31 | |
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32 | PUBLIC & |
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33 | & mpp_allgatherv |
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34 | |
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35 | INTERFACE mpp_allgatherv |
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36 | MODULE PROCEDURE mpp_allgatherv_real, mpp_allgatherv_int |
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37 | END INTERFACE |
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38 | CONTAINS |
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39 | |
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40 | SUBROUTINE mpp_allgatherv_real( pvalsin, knoin, pvalsout, ksizeout, & |
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41 | & knoout, kstartout ) |
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42 | !!---------------------------------------------------------------------- |
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43 | !! *** ROUTINE mpp_allgatherv_real *** |
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44 | !! |
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45 | !! ** Purpose : Gather a real array on all processors |
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46 | !! |
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47 | !! ** Method : MPI all gatherv |
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48 | !! |
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49 | !! ** Action : This does only work for MPI. |
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50 | !! It does not work for SHMEM. |
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51 | !! |
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52 | !! References : http://www.mpi-forum.org |
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53 | !! |
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54 | !! History : |
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55 | !! ! 08-08 (K. Mogensen) Original code |
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56 | !!---------------------------------------------------------------------- |
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57 | |
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58 | !! * Arguments |
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59 | INTEGER, INTENT(IN) :: & |
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60 | & knoin, & |
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61 | & ksizeout |
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62 | REAL(wp), DIMENSION(knoin), INTENT(IN) :: & |
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63 | & pvalsin |
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64 | REAL(wp), DIMENSION(ksizeout), INTENT(OUT) :: & |
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65 | & pvalsout |
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66 | INTEGER, DIMENSION(jpnij), INTENT(OUT) :: & |
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67 | & kstartout, & |
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68 | & knoout |
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69 | |
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70 | !! * Local declarations |
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71 | INTEGER :: & |
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72 | & ierr |
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73 | #if defined key_mpp_mpi |
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74 | #include <mpif.h> |
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75 | INTEGER, DIMENSION(jpnij) :: & |
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76 | & idispl |
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77 | INTEGER :: & |
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78 | & ji |
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79 | !----------------------------------------------------------------------- |
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80 | ! Call the MPI library to get number of data per processor |
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81 | !----------------------------------------------------------------------- |
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82 | CALL mpi_allgather( knoin, 1, mpi_integer, & |
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83 | & knoout, 1, mpi_integer, & |
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84 | & mpi_comm_opa, ierr ) |
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85 | !----------------------------------------------------------------------- |
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86 | ! Compute starts of each processors contribution |
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87 | !----------------------------------------------------------------------- |
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88 | kstartout(1) = 0 |
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89 | DO ji = 2, jpnij |
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90 | kstartout(ji) = kstartout(ji-1) + knoout(ji-1) |
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91 | ENDDO |
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92 | !----------------------------------------------------------------------- |
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93 | ! Call the MPI library to do the gathering of the data |
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94 | !----------------------------------------------------------------------- |
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95 | CALL mpi_allgatherv( pvalsin, knoin, mpivar, & |
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96 | & pvalsout, knoout, kstartout, mpivar, & |
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97 | & mpi_comm_opa, ierr ) |
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98 | #elif defined key_mpp_shmem |
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99 | error "Only MPI support for MPP in NEMOVAR" |
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100 | #else |
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101 | !----------------------------------------------------------------------- |
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102 | ! For no-MPP just return input values |
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103 | !----------------------------------------------------------------------- |
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104 | pvalsout(1:knoin) = pvalsin(1:knoin) |
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105 | kstartout(1) = 0 |
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106 | knoout(1) = knoin |
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107 | |
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108 | #endif |
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109 | |
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110 | END SUBROUTINE mpp_allgatherv_real |
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111 | |
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112 | SUBROUTINE mpp_allgatherv_int( kvalsin, knoin, kvalsout, ksizeout, & |
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113 | & knoout, kstartout ) |
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114 | !!---------------------------------------------------------------------- |
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115 | !! *** ROUTINE mpp_allgatherv *** |
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116 | !! |
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117 | !! ** Purpose : Gather an integer array on all processors |
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118 | !! |
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119 | !! ** Method : MPI all gatherv |
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120 | !! |
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121 | !! ** Action : This does only work for MPI. |
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122 | !! It does not work for SHMEM. |
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123 | !! |
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124 | !! References : http://www.mpi-forum.org |
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125 | !! |
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126 | !! History : |
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127 | !! ! 06-07 (K. Mogensen) Original code |
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128 | !!---------------------------------------------------------------------- |
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129 | |
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130 | !! * Arguments |
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131 | INTEGER, INTENT(IN) :: & |
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132 | & knoin, & |
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133 | & ksizeout |
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134 | INTEGER, DIMENSION(knoin), INTENT(IN) :: & |
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135 | & kvalsin |
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136 | INTEGER, DIMENSION(ksizeout), INTENT(OUT) :: & |
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137 | & kvalsout |
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138 | INTEGER, DIMENSION(jpnij), INTENT(OUT) :: & |
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139 | & kstartout, & |
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140 | & knoout |
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141 | |
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142 | !! * Local declarations |
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143 | INTEGER :: & |
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144 | & ierr |
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145 | #if defined key_mpp_mpi |
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146 | #include <mpif.h> |
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147 | INTEGER, DIMENSION(jpnij) :: & |
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148 | & idispl |
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149 | INTEGER :: & |
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150 | & ji |
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151 | !----------------------------------------------------------------------- |
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152 | ! Call the MPI library to get number of data per processor |
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153 | !----------------------------------------------------------------------- |
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154 | CALL mpi_allgather( knoin, 1, mpi_integer, & |
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155 | & knoout, 1, mpi_integer, & |
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156 | & mpi_comm_opa, ierr ) |
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157 | !----------------------------------------------------------------------- |
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158 | ! Compute starts of each processors contribution |
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159 | !----------------------------------------------------------------------- |
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160 | kstartout(1) = 0 |
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161 | DO ji = 2, jpnij |
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162 | kstartout(ji) = kstartout(ji-1) + knoout(ji-1) |
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163 | ENDDO |
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164 | !----------------------------------------------------------------------- |
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165 | ! Call the MPI library to do the gathering of the data |
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166 | !----------------------------------------------------------------------- |
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167 | CALL mpi_allgatherv( kvalsin, knoin, mpi_integer, & |
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168 | & kvalsout, knoout, kstartout, mpi_integer, & |
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169 | & mpi_comm_opa, ierr ) |
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170 | #elif defined key_mpp_shmem |
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171 | error "Only MPI support for MPP in NEMOVAR" |
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172 | #else |
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173 | !----------------------------------------------------------------------- |
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174 | ! For no-MPP just return input values |
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175 | !----------------------------------------------------------------------- |
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176 | kvalsout(1:knoin) = kvalsin(1:knoin) |
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177 | kstartout(1) = 0 |
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178 | knoout(1) = knoin |
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179 | |
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180 | #endif |
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181 | |
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182 | END SUBROUTINE mpp_allgatherv_int |
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183 | |
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184 | END MODULE mppallgatherv |
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