1 | MODULE pmc_child |
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2 | |
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3 | !------------------------------------------------------------------------------! |
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4 | ! This file is part of PALM. |
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5 | ! |
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6 | ! PALM is free software: you can redistribute it and/or modify it under the |
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7 | ! terms of the GNU General Public License as published by the Free Software |
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8 | ! Foundation, either version 3 of the License, or (at your option) any later |
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9 | ! version. |
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10 | ! |
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11 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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12 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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13 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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14 | ! |
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15 | ! You should have received a copy of the GNU General Public License along with |
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16 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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17 | ! |
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18 | ! Copyright 1997-2016 Leibniz Universitaet Hannover |
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19 | !------------------------------------------------------------------------------! |
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20 | ! |
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21 | ! Current revisions: |
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22 | ! ------------------ |
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23 | ! |
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24 | ! |
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25 | ! Former revisions: |
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26 | ! ----------------- |
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27 | ! $Id: pmc_child_mod.f90 2001 2016-08-20 18:41:22Z gronemeier $ |
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28 | ! |
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29 | ! 2000 2016-08-20 18:09:15Z knoop |
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30 | ! Forced header and separation lines into 80 columns |
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31 | ! |
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32 | ! 1897 2016-05-03 08:10:23Z raasch |
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33 | ! Module renamed. Code clean up. The words server/client changed to parent/child. |
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34 | ! |
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35 | ! 1896 2016-05-03 08:06:41Z raasch |
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36 | ! re-formatted to match PALM style |
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37 | ! |
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38 | ! 1850 2016-04-08 13:29:27Z maronga |
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39 | ! Module renamed |
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40 | ! |
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41 | ! |
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42 | ! 1833 2016-04-07 14:23:03Z raasch |
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43 | ! gfortran requires pointer attributes for some array declarations, |
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44 | ! long line wrapped |
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45 | ! |
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46 | ! 1808 2016-04-05 19:44:00Z raasch |
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47 | ! MPI module used by default on all machines |
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48 | ! |
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49 | ! 1797 2016-03-21 16:50:28Z raasch |
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50 | ! introduction of different datatransfer modes |
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51 | ! |
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52 | ! 1791 2016-03-11 10:41:25Z raasch |
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53 | ! Debug write-statement commented out |
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54 | ! |
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55 | ! 1786 2016-03-08 05:49:27Z raasch |
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56 | ! change in child-parent data transfer: parent now gets data from child |
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57 | ! instead of that child puts it to the parent |
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58 | ! |
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59 | ! 1783 2016-03-06 18:36:17Z raasch |
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60 | ! Bugfix: wrong data-type in MPI_WIN_CREATE replaced |
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61 | ! |
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62 | ! 1779 2016-03-03 08:01:28Z raasch |
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63 | ! kind=dp replaced by wp, dim_order removed |
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64 | ! array management changed from linked list to sequential loop |
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65 | ! |
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66 | ! 1764 2016-02-28 12:45:19Z raasch |
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67 | ! cpp-statement added (nesting can only be used in parallel mode), |
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68 | ! all kinds given in PALM style |
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69 | ! |
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70 | ! 1762 2016-02-25 12:31:13Z hellstea |
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71 | ! Initial revision by K. Ketelsen |
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72 | ! |
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73 | ! Description: |
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74 | ! ------------ |
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75 | ! |
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76 | ! Child part of Palm Model Coupler |
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77 | !-------------------------------------------------------------------------------! |
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78 | |
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79 | #if defined( __parallel ) |
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80 | |
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81 | USE, INTRINSIC :: iso_c_binding |
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82 | |
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83 | #if defined( __mpifh ) |
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84 | INCLUDE "mpif.h" |
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85 | #else |
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86 | USE MPI |
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87 | #endif |
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88 | |
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89 | USE kinds |
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90 | USE pmc_general, & |
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91 | ONLY: arraydef, childdef, da_desclen, da_namedef, da_namelen, pedef, & |
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92 | pmc_da_name_err, pmc_g_setname, pmc_max_array, pmc_status_ok |
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93 | |
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94 | USE pmc_handle_communicator, & |
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95 | ONLY: m_model_comm, m_model_npes, m_model_rank, m_to_parent_comm |
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96 | |
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97 | USE pmc_mpi_wrapper, & |
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98 | ONLY: pmc_alloc_mem, pmc_bcast, pmc_inter_bcast, pmc_time |
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99 | |
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100 | IMPLICIT NONE |
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101 | |
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102 | PRIVATE |
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103 | SAVE |
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104 | |
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105 | TYPE(childdef) :: me !< |
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106 | |
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107 | INTEGER :: myindex = 0 !< counter and unique number for data arrays |
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108 | INTEGER :: next_array_in_list = 0 !< |
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109 | |
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110 | |
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111 | INTERFACE pmc_childinit |
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112 | MODULE PROCEDURE pmc_childinit |
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113 | END INTERFACE pmc_childinit |
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114 | |
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115 | INTERFACE pmc_c_clear_next_array_list |
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116 | MODULE PROCEDURE pmc_c_clear_next_array_list |
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117 | END INTERFACE pmc_c_clear_next_array_list |
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118 | |
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119 | INTERFACE pmc_c_getbuffer |
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120 | MODULE PROCEDURE pmc_c_getbuffer |
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121 | END INTERFACE pmc_c_getbuffer |
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122 | |
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123 | INTERFACE pmc_c_getnextarray |
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124 | MODULE PROCEDURE pmc_c_getnextarray |
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125 | END INTERFACE pmc_c_getnextarray |
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126 | |
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127 | INTERFACE pmc_c_get_2d_index_list |
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128 | MODULE PROCEDURE pmc_c_get_2d_index_list |
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129 | END INTERFACE pmc_c_get_2d_index_list |
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130 | |
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131 | INTERFACE pmc_c_putbuffer |
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132 | MODULE PROCEDURE pmc_c_putbuffer |
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133 | END INTERFACE pmc_c_putbuffer |
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134 | |
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135 | INTERFACE pmc_c_setind_and_allocmem |
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136 | MODULE PROCEDURE pmc_c_setind_and_allocmem |
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137 | END INTERFACE pmc_c_setind_and_allocmem |
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138 | |
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139 | INTERFACE pmc_c_set_dataarray |
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140 | MODULE PROCEDURE pmc_c_set_dataarray_2d |
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141 | MODULE PROCEDURE pmc_c_set_dataarray_3d |
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142 | END INTERFACE pmc_c_set_dataarray |
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143 | |
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144 | INTERFACE pmc_set_dataarray_name |
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145 | MODULE PROCEDURE pmc_set_dataarray_name |
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146 | MODULE PROCEDURE pmc_set_dataarray_name_lastentry |
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147 | END INTERFACE pmc_set_dataarray_name |
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148 | |
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149 | |
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150 | PUBLIC pmc_childinit, pmc_c_clear_next_array_list, pmc_c_getbuffer, & |
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151 | pmc_c_getnextarray, pmc_c_putbuffer, pmc_c_setind_and_allocmem, & |
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152 | pmc_c_set_dataarray, pmc_set_dataarray_name, pmc_c_get_2d_index_list |
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153 | |
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154 | CONTAINS |
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155 | |
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156 | |
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157 | |
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158 | SUBROUTINE pmc_childinit |
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159 | |
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160 | IMPLICIT NONE |
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161 | |
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162 | INTEGER :: i !< |
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163 | INTEGER :: istat !< |
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164 | |
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165 | ! |
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166 | !-- Get / define the MPI environment |
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167 | me%model_comm = m_model_comm |
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168 | me%inter_comm = m_to_parent_comm |
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169 | |
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170 | CALL MPI_COMM_RANK( me%model_comm, me%model_rank, istat ) |
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171 | CALL MPI_COMM_SIZE( me%model_comm, me%model_npes, istat ) |
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172 | CALL MPI_COMM_REMOTE_SIZE( me%inter_comm, me%inter_npes, istat ) |
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173 | |
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174 | ! |
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175 | !-- Intra-communicater is used for MPI_GET |
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176 | CALL MPI_INTERCOMM_MERGE( me%inter_comm, .TRUE., me%intra_comm, istat ) |
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177 | CALL MPI_COMM_RANK( me%intra_comm, me%intra_rank, istat ) |
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178 | |
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179 | ALLOCATE( me%pes(me%inter_npes) ) |
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180 | |
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181 | ! |
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182 | !-- Allocate an array of type arraydef for all parent PEs to store information |
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183 | !-- of then transfer array |
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184 | DO i = 1, me%inter_npes |
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185 | ALLOCATE( me%pes(i)%array_list(pmc_max_array) ) |
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186 | ENDDO |
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187 | |
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188 | END SUBROUTINE pmc_childinit |
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189 | |
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190 | |
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191 | |
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192 | SUBROUTINE pmc_set_dataarray_name( parentarraydesc, parentarrayname, & |
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193 | childarraydesc, childarrayname, istat ) |
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194 | |
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195 | IMPLICIT NONE |
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196 | |
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197 | CHARACTER(LEN=*), INTENT(IN) :: parentarrayname !< |
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198 | CHARACTER(LEN=*), INTENT(IN) :: parentarraydesc !< |
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199 | CHARACTER(LEN=*), INTENT(IN) :: childarrayname !< |
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200 | CHARACTER(LEN=*), INTENT(IN) :: childarraydesc !< |
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201 | |
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202 | INTEGER, INTENT(OUT) :: istat !< |
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203 | |
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204 | ! |
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205 | !-- Local variables |
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206 | TYPE(da_namedef) :: myname !< |
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207 | |
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208 | INTEGER :: mype !< |
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209 | INTEGER :: my_addiarray = 0 !< |
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210 | |
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211 | |
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212 | istat = pmc_status_ok |
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213 | |
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214 | ! |
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215 | !-- Check length of array names |
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216 | IF ( LEN( TRIM( parentarrayname) ) > da_namelen .OR. & |
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217 | LEN( TRIM( childarrayname) ) > da_namelen ) THEN |
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218 | istat = pmc_da_name_err |
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219 | ENDIF |
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220 | |
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221 | IF ( m_model_rank == 0 ) THEN |
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222 | myindex = myindex + 1 |
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223 | myname%couple_index = myIndex |
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224 | myname%parentdesc = TRIM( parentarraydesc ) |
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225 | myname%nameonparent = TRIM( parentarrayname ) |
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226 | myname%childdesc = TRIM( childarraydesc ) |
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227 | myname%nameonchild = TRIM( childarrayname ) |
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228 | ENDIF |
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229 | |
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230 | ! |
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231 | !-- Broadcat to all child PEs |
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232 | !-- TODO: describe what is broadcast here and why it is done |
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233 | CALL pmc_bcast( myname%couple_index, 0, comm=m_model_comm ) |
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234 | CALL pmc_bcast( myname%parentdesc, 0, comm=m_model_comm ) |
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235 | CALL pmc_bcast( myname%nameonparent, 0, comm=m_model_comm ) |
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236 | CALL pmc_bcast( myname%childdesc, 0, comm=m_model_comm ) |
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237 | CALL pmc_bcast( myname%nameonchild, 0, comm=m_model_comm ) |
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238 | |
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239 | ! |
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240 | !-- Broadcat to all parent PEs |
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241 | !-- TODO: describe what is broadcast here and why it is done |
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242 | IF ( m_model_rank == 0 ) THEN |
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243 | mype = MPI_ROOT |
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244 | ELSE |
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245 | mype = MPI_PROC_NULL |
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246 | ENDIF |
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247 | |
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248 | CALL pmc_bcast( myname%couple_index, mype, comm=m_to_parent_comm ) |
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249 | CALL pmc_bcast( myname%parentdesc, mype, comm=m_to_parent_comm ) |
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250 | CALL pmc_bcast( myname%nameonparent, mype, comm=m_to_parent_comm ) |
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251 | CALL pmc_bcast( myname%childdesc, mype, comm=m_to_parent_comm ) |
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252 | CALL pmc_bcast( myname%nameonchild, mype, comm=m_to_parent_comm ) |
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253 | |
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254 | CALL pmc_g_setname( me, myname%couple_index, myname%nameonchild ) |
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255 | |
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256 | END SUBROUTINE pmc_set_dataarray_name |
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257 | |
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258 | |
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259 | |
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260 | SUBROUTINE pmc_set_dataarray_name_lastentry( lastentry ) |
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261 | |
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262 | IMPLICIT NONE |
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263 | |
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264 | LOGICAL, INTENT(IN), OPTIONAL :: lastentry !< |
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265 | |
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266 | ! |
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267 | !-- Local variables |
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268 | INTEGER :: mype !< |
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269 | TYPE(dA_namedef) :: myname !< |
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270 | |
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271 | myname%couple_index = -1 |
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272 | |
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273 | IF ( m_model_rank == 0 ) THEN |
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274 | mype = MPI_ROOT |
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275 | ELSE |
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276 | mype = MPI_PROC_NULL |
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277 | ENDIF |
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278 | |
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279 | CALL pmc_bcast( myname%couple_index, mype, comm=m_to_parent_comm ) |
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280 | |
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281 | END SUBROUTINE pmc_set_dataarray_name_lastentry |
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282 | |
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283 | |
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284 | |
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285 | SUBROUTINE pmc_c_get_2d_index_list |
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286 | |
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287 | IMPLICIT NONE |
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288 | |
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289 | INTEGER :: dummy !< |
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290 | INTEGER :: i, ierr, i2, j, nr !< |
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291 | INTEGER :: indwin !< MPI window object |
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292 | INTEGER :: indwin2 ! < MPI window object |
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293 | |
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294 | INTEGER(KIND=MPI_ADDRESS_KIND) :: win_size !< Size of MPI window 1 (in bytes) |
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295 | INTEGER(KIND=MPI_ADDRESS_KIND) :: disp !< Displacement unit (Integer = 4, floating poit = 8 |
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296 | INTEGER(KIND=MPI_ADDRESS_KIND) :: winsize !< Size of MPI window 2 (in bytes) |
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297 | |
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298 | INTEGER, DIMENSION(me%inter_npes*2) :: nrele !< Number of Elements of a |
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299 | !< horizontal slice |
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300 | INTEGER, DIMENSION(:), POINTER :: myind !< |
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301 | |
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302 | TYPE(pedef), POINTER :: ape !> Pointer to pedef structure |
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303 | |
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304 | |
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305 | win_size = C_SIZEOF( dummy ) |
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306 | CALL MPI_WIN_CREATE( dummy, win_size, iwp, MPI_INFO_NULL, me%intra_comm, & |
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307 | indwin, ierr ) |
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308 | |
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309 | ! |
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310 | !-- Open window on parent side |
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311 | !-- TODO: why is the next MPI routine called twice?? |
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312 | CALL MPI_WIN_FENCE( 0, indwin, ierr ) |
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313 | |
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314 | ! |
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315 | !-- Close window on parent side and open on child side |
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316 | CALL MPI_WIN_FENCE( 0, indwin, ierr ) |
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317 | |
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318 | DO i = 1, me%inter_npes |
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319 | disp = me%model_rank * 2 |
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320 | CALL MPI_GET( nrele((i-1)*2+1), 2, MPI_INTEGER, i-1, disp, 2, & |
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321 | MPI_INTEGER, indwin, ierr ) |
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322 | ENDDO |
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323 | |
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324 | ! |
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325 | !-- MPI_GET is non-blocking -> data in nrele is not available until MPI_FENCE is |
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326 | !-- called |
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327 | CALL MPI_WIN_FENCE( 0, indwin, ierr ) |
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328 | |
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329 | ! |
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330 | !-- Allocate memory for index array |
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331 | winsize = 0 |
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332 | DO i = 1, me%inter_npes |
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333 | ape => me%pes(i) |
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334 | i2 = ( i-1 ) * 2 + 1 |
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335 | nr = nrele(i2+1) |
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336 | IF ( nr > 0 ) THEN |
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337 | ALLOCATE( ape%locind(nr) ) |
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338 | ELSE |
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339 | NULLIFY( ape%locind ) |
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340 | ENDIF |
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341 | winsize = MAX( nr, winsize ) |
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342 | ENDDO |
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343 | |
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344 | ALLOCATE( myind(2*winsize) ) |
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345 | winsize = 1 |
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346 | |
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347 | ! |
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348 | !-- Local buffer used in MPI_GET can but must not be inside the MPI Window. |
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349 | !-- Here, we use a dummy for the MPI window because the parent PEs do not access |
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350 | !-- the RMA window via MPI_GET or MPI_PUT |
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351 | CALL MPI_WIN_CREATE( dummy, winsize, iwp, MPI_INFO_NULL, me%intra_comm, & |
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352 | indwin2, ierr ) |
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353 | |
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354 | ! |
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355 | !-- MPI_GET is non-blocking -> data in nrele is not available until MPI_FENCE is |
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356 | !-- called |
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357 | !-- TODO: as before: why is this called twice?? |
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358 | CALL MPI_WIN_FENCE( 0, indwin2, ierr ) |
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359 | CALL MPI_WIN_FENCE( 0, indwin2, ierr ) |
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360 | |
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361 | DO i = 1, me%inter_npes |
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362 | ape => me%pes(i) |
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363 | nr = nrele(i*2) |
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364 | IF ( nr > 0 ) THEN |
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365 | disp = nrele(2*(i-1)+1) |
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366 | CALL MPI_WIN_LOCK( MPI_LOCK_SHARED , i-1, 0, indwin2, ierr ) |
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367 | CALL MPI_GET( myind, 2*nr, MPI_INTEGER, i-1, disp, 2*nr, & |
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368 | MPI_INTEGER, indwin2, ierr ) |
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369 | CALL MPI_WIN_UNLOCK( i-1, indwin2, ierr ) |
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370 | DO j = 1, nr |
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371 | ape%locind(j)%i = myind(2*j-1) |
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372 | ape%locind(j)%j = myind(2*j) |
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373 | ENDDO |
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374 | ape%nrele = nr |
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375 | ELSE |
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376 | ape%nrele = -1 |
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377 | ENDIF |
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378 | ENDDO |
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379 | |
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380 | ! |
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381 | !-- Don't know why, but this barrier is necessary before we can free the windows |
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382 | CALL MPI_BARRIER( me%intra_comm, ierr ) |
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383 | |
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384 | CALL MPI_WIN_FREE( indWin, ierr ) |
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385 | CALL MPI_WIN_FREE( indwin2, ierr ) |
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386 | DEALLOCATE( myind ) |
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387 | |
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388 | END SUBROUTINE pmc_c_get_2d_index_list |
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389 | |
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390 | |
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391 | |
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392 | SUBROUTINE pmc_c_clear_next_array_list |
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393 | |
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394 | IMPLICIT NONE |
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395 | |
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396 | next_array_in_list = 0 |
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397 | |
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398 | END SUBROUTINE pmc_c_clear_next_array_list |
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399 | |
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400 | |
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401 | |
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402 | LOGICAL FUNCTION pmc_c_getnextarray( myname ) |
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403 | |
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404 | ! |
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405 | !-- List handling is still required to get minimal interaction with |
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406 | !-- pmc_interface |
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407 | CHARACTER(LEN=*), INTENT(OUT) :: myname !< |
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408 | |
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409 | ! |
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410 | !-- Local variables |
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411 | TYPE(pedef), POINTER :: ape |
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412 | TYPE(arraydef), POINTER :: ar |
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413 | |
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414 | |
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415 | next_array_in_list = next_array_in_list + 1 |
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416 | |
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417 | ! |
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418 | !-- Array names are the same on all child PEs, so take first PE to get the name |
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419 | ape => me%pes(1) |
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420 | |
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421 | ! |
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422 | !-- Check if all arrays have been processed |
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423 | IF ( next_array_in_list > ape%nr_arrays ) THEN |
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424 | pmc_c_getnextarray = .FALSE. |
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425 | RETURN |
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426 | ENDIF |
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427 | |
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428 | ar => ape%array_list( next_array_in_list ) |
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429 | |
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430 | myname = ar%name |
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431 | |
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432 | ! |
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433 | !-- Return true if legal array |
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434 | !-- TODO: the case of a non-legal array does not seem to appear, so why is this |
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435 | !-- setting required at all? |
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436 | pmc_c_getnextarray = .TRUE. |
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437 | |
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438 | END function pmc_c_getnextarray |
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439 | |
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440 | |
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441 | |
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442 | SUBROUTINE pmc_c_set_dataarray_2d( array ) |
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443 | |
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444 | IMPLICIT NONE |
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445 | |
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446 | REAL(wp), INTENT(IN) , DIMENSION(:,:), POINTER :: array !< |
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447 | |
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448 | INTEGER :: i !< |
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449 | INTEGER :: nrdims !< |
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450 | INTEGER, DIMENSION(4) :: dims !< |
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451 | |
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452 | TYPE(C_PTR) :: array_adr |
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453 | TYPE(arraydef), POINTER :: ar |
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454 | TYPE(pedef), POINTER :: ape |
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455 | |
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456 | |
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457 | dims = 1 |
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458 | nrdims = 2 |
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459 | dims(1) = SIZE( array, 1 ) |
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460 | dims(2) = SIZE( array, 2 ) |
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461 | |
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462 | array_adr = C_LOC( array ) |
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463 | |
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464 | DO i = 1, me%inter_npes |
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465 | ape => me%pes(i) |
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466 | ar => ape%array_list(next_array_in_list) |
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467 | ar%nrdims = nrdims |
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468 | ar%a_dim = dims |
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469 | ar%data = array_adr |
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470 | ENDDO |
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471 | |
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472 | END SUBROUTINE pmc_c_set_dataarray_2d |
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473 | |
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474 | |
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475 | |
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476 | SUBROUTINE pmc_c_set_dataarray_3d (array) |
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477 | |
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478 | IMPLICIT NONE |
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479 | |
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480 | REAL(wp), INTENT(IN), DIMENSION(:,:,:), POINTER :: array !< |
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481 | |
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482 | INTEGER :: i |
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483 | INTEGER :: nrdims |
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484 | INTEGER, DIMENSION (4) :: dims |
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485 | TYPE(C_PTR) :: array_adr |
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486 | TYPE(pedef), POINTER :: ape |
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487 | TYPE(arraydef), POINTER :: ar |
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488 | |
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489 | |
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490 | dims = 1 |
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491 | nrdims = 3 |
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492 | dims(1) = SIZE( array, 1 ) |
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493 | dims(2) = SIZE( array, 2 ) |
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494 | dims(3) = SIZE( array, 3 ) |
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495 | |
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496 | array_adr = C_LOC( array ) |
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497 | |
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498 | DO i = 1, me%inter_npes |
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499 | ape => me%pes(i) |
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500 | ar => ape%array_list(next_array_in_list) |
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501 | ar%nrdims = nrdims |
---|
502 | ar%a_dim = dims |
---|
503 | ar%data = array_adr |
---|
504 | ENDDO |
---|
505 | |
---|
506 | END SUBROUTINE pmc_c_set_dataarray_3d |
---|
507 | |
---|
508 | |
---|
509 | |
---|
510 | SUBROUTINE pmc_c_setind_and_allocmem |
---|
511 | |
---|
512 | IMPLICIT NONE |
---|
513 | |
---|
514 | ! |
---|
515 | !-- Naming convention for appendices: _pc -> parent to child transfer |
---|
516 | !-- _cp -> child to parent transfer |
---|
517 | !-- recv -> parent to child transfer |
---|
518 | !-- send -> child to parent transfer |
---|
519 | CHARACTER(LEN=da_namelen) :: myname !< |
---|
520 | |
---|
521 | INTEGER :: arlen !< |
---|
522 | INTEGER :: myindex !< |
---|
523 | INTEGER :: i !< |
---|
524 | INTEGER :: ierr !< |
---|
525 | INTEGER :: istat !< |
---|
526 | INTEGER :: j !< |
---|
527 | INTEGER :: rcount !< |
---|
528 | INTEGER :: tag !< |
---|
529 | |
---|
530 | INTEGER, PARAMETER :: noindex = -1 !< |
---|
531 | |
---|
532 | INTEGER(idp) :: bufsize !< size of MPI data window |
---|
533 | INTEGER(KIND=MPI_ADDRESS_KIND) :: winsize !< |
---|
534 | |
---|
535 | INTEGER,DIMENSION(1024) :: req !< |
---|
536 | |
---|
537 | REAL(wp), DIMENSION(:), POINTER, SAVE :: base_array_pc !< base array |
---|
538 | REAL(wp), DIMENSION(:), POINTER, SAVE :: base_array_cp !< base array |
---|
539 | |
---|
540 | TYPE(pedef), POINTER :: ape !< |
---|
541 | TYPE(arraydef), POINTER :: ar !< |
---|
542 | Type(C_PTR) :: base_ptr !< |
---|
543 | |
---|
544 | |
---|
545 | myindex = 0 |
---|
546 | bufsize = 8 |
---|
547 | |
---|
548 | ! |
---|
549 | !-- Parent to child direction. |
---|
550 | !-- First stride: compute size and set index |
---|
551 | DO i = 1, me%inter_npes |
---|
552 | |
---|
553 | ape => me%pes(i) |
---|
554 | tag = 200 |
---|
555 | |
---|
556 | DO j = 1, ape%nr_arrays |
---|
557 | |
---|
558 | ar => ape%array_list(j) |
---|
559 | |
---|
560 | ! |
---|
561 | !-- Receive index from child |
---|
562 | tag = tag + 1 |
---|
563 | CALL MPI_RECV( myindex, 1, MPI_INTEGER, i-1, tag, me%inter_comm, & |
---|
564 | MPI_STATUS_IGNORE, ierr ) |
---|
565 | ar%recvindex = myindex |
---|
566 | |
---|
567 | ! |
---|
568 | !-- Determine max, because child buffer is allocated only once |
---|
569 | !-- TODO: give a more meaningful comment |
---|
570 | IF( ar%nrdims == 3 ) THEN |
---|
571 | bufsize = MAX( bufsize, ar%a_dim(1)*ar%a_dim(2)*ar%a_dim(3) ) |
---|
572 | ELSE |
---|
573 | bufsize = MAX( bufsize, ar%a_dim(1)*ar%a_dim(2) ) |
---|
574 | ENDIF |
---|
575 | |
---|
576 | ENDDO |
---|
577 | |
---|
578 | ENDDO |
---|
579 | |
---|
580 | ! |
---|
581 | !-- Create RMA (one sided communication) data buffer. |
---|
582 | !-- The buffer for MPI_GET can be PE local, i.e. it can but must not be part of |
---|
583 | !-- the MPI RMA window |
---|
584 | CALL pmc_alloc_mem( base_array_pc, bufsize, base_ptr ) |
---|
585 | me%totalbuffersize = bufsize*wp ! total buffer size in byte |
---|
586 | |
---|
587 | ! |
---|
588 | !-- Second stride: set buffer pointer |
---|
589 | DO i = 1, me%inter_npes |
---|
590 | |
---|
591 | ape => me%pes(i) |
---|
592 | |
---|
593 | DO j = 1, ape%nr_arrays |
---|
594 | ar => ape%array_list(j) |
---|
595 | ar%recvbuf = base_ptr |
---|
596 | ENDDO |
---|
597 | |
---|
598 | ENDDO |
---|
599 | |
---|
600 | ! |
---|
601 | !-- Child to parent direction |
---|
602 | myindex = 1 |
---|
603 | rcount = 0 |
---|
604 | bufsize = 8 |
---|
605 | |
---|
606 | DO i = 1, me%inter_npes |
---|
607 | |
---|
608 | ape => me%pes(i) |
---|
609 | tag = 300 |
---|
610 | |
---|
611 | DO j = 1, ape%nr_arrays |
---|
612 | |
---|
613 | ar => ape%array_list(j) |
---|
614 | IF( ar%nrdims == 2 ) THEN |
---|
615 | arlen = ape%nrele |
---|
616 | ELSEIF( ar%nrdims == 3 ) THEN |
---|
617 | arlen = ape%nrele*ar%a_dim(1) |
---|
618 | ENDIF |
---|
619 | |
---|
620 | tag = tag + 1 |
---|
621 | rcount = rcount + 1 |
---|
622 | IF ( ape%nrele > 0 ) THEN |
---|
623 | CALL MPI_ISEND( myindex, 1, MPI_INTEGER, i-1, tag, me%inter_comm, & |
---|
624 | req(rcount), ierr ) |
---|
625 | ar%sendindex = myindex |
---|
626 | ELSE |
---|
627 | CALL MPI_ISEND( noindex, 1, MPI_INTEGER, i-1, tag, me%inter_comm, & |
---|
628 | req(rcount), ierr ) |
---|
629 | ar%sendindex = noindex |
---|
630 | ENDIF |
---|
631 | |
---|
632 | ! |
---|
633 | !-- Maximum of 1024 outstanding requests |
---|
634 | !-- TODO: explain where this maximum comes from (arbitrary?) |
---|
635 | IF ( rcount == 1024 ) THEN |
---|
636 | CALL MPI_WAITALL( rcount, req, MPI_STATUSES_IGNORE, ierr ) |
---|
637 | rcount = 0 |
---|
638 | ENDIF |
---|
639 | |
---|
640 | IF ( ape%nrele > 0 ) THEN |
---|
641 | ar%sendsize = arlen |
---|
642 | myindex = myindex + arlen |
---|
643 | bufsize = bufsize + arlen |
---|
644 | ENDIF |
---|
645 | |
---|
646 | ENDDO |
---|
647 | |
---|
648 | IF ( rcount > 0 ) THEN |
---|
649 | CALL MPI_WAITALL( rcount, req, MPI_STATUSES_IGNORE, ierr ) |
---|
650 | ENDIF |
---|
651 | |
---|
652 | ENDDO |
---|
653 | |
---|
654 | ! |
---|
655 | !-- Create RMA (one sided communication) window for data buffer child to parent |
---|
656 | !-- transfer. |
---|
657 | !-- The buffer of MPI_GET (counter part of transfer) can be PE-local, i.e. it |
---|
658 | !-- can but must not be part of the MPI RMA window. Only one RMA window is |
---|
659 | !-- required to prepare the data |
---|
660 | !-- for parent -> child transfer on the parent side |
---|
661 | !-- and |
---|
662 | !-- for child -> parent transfer on the child side |
---|
663 | CALL pmc_alloc_mem( base_array_cp, bufsize ) |
---|
664 | me%totalbuffersize = bufsize * wp ! total buffer size in byte |
---|
665 | |
---|
666 | winSize = me%totalbuffersize |
---|
667 | |
---|
668 | CALL MPI_WIN_CREATE( base_array_cp, winsize, wp, MPI_INFO_NULL, & |
---|
669 | me%intra_comm, me%win_parent_child, ierr ) |
---|
670 | CALL MPI_WIN_FENCE( 0, me%win_parent_child, ierr ) |
---|
671 | CALL MPI_BARRIER( me%intra_comm, ierr ) |
---|
672 | |
---|
673 | ! |
---|
674 | !-- Second stride: set buffer pointer |
---|
675 | DO i = 1, me%inter_npes |
---|
676 | |
---|
677 | ape => me%pes(i) |
---|
678 | |
---|
679 | DO j = 1, ape%nr_arrays |
---|
680 | |
---|
681 | ar => ape%array_list(j) |
---|
682 | |
---|
683 | IF ( ape%nrele > 0 ) THEN |
---|
684 | ar%sendbuf = C_LOC( base_array_cp(ar%sendindex) ) |
---|
685 | |
---|
686 | ! |
---|
687 | !-- TODO: if this is an error to be really expected, replace the |
---|
688 | !-- following message by a meaningful standard PALM message using |
---|
689 | !-- the message-routine |
---|
690 | IF ( ar%sendindex+ar%sendsize > bufsize ) THEN |
---|
691 | WRITE( 0,'(a,i4,4i7,1x,a)') 'Child buffer too small ', i, & |
---|
692 | ar%sendindex, ar%sendsize, ar%sendindex+ar%sendsize, & |
---|
693 | bufsize, TRIM( ar%name ) |
---|
694 | CALL MPI_ABORT( MPI_COMM_WORLD, istat, ierr ) |
---|
695 | ENDIF |
---|
696 | ENDIF |
---|
697 | |
---|
698 | ENDDO |
---|
699 | |
---|
700 | ENDDO |
---|
701 | |
---|
702 | END SUBROUTINE pmc_c_setind_and_allocmem |
---|
703 | |
---|
704 | |
---|
705 | |
---|
706 | SUBROUTINE pmc_c_getbuffer( waittime ) |
---|
707 | |
---|
708 | IMPLICIT NONE |
---|
709 | |
---|
710 | REAL(wp), INTENT(OUT), OPTIONAL :: waittime !< |
---|
711 | |
---|
712 | CHARACTER(LEN=da_namelen) :: myname !< |
---|
713 | |
---|
714 | INTEGER :: ierr !< |
---|
715 | INTEGER :: ij !< |
---|
716 | INTEGER :: ip !< |
---|
717 | INTEGER :: j !< |
---|
718 | INTEGER :: myindex !< |
---|
719 | INTEGER :: nr !< number of elements to get |
---|
720 | !< from parent |
---|
721 | INTEGER(KIND=MPI_ADDRESS_KIND) :: target_disp |
---|
722 | INTEGER,DIMENSION(1) :: buf_shape |
---|
723 | |
---|
724 | REAL(wp) :: t1 |
---|
725 | REAL(wp) :: t2 |
---|
726 | |
---|
727 | REAL(wp), POINTER, DIMENSION(:) :: buf |
---|
728 | REAL(wp), POINTER, DIMENSION(:,:) :: data_2d |
---|
729 | REAL(wp), POINTER, DIMENSION(:,:,:) :: data_3d |
---|
730 | TYPE(pedef), POINTER :: ape |
---|
731 | TYPE(arraydef), POINTER :: ar |
---|
732 | |
---|
733 | ! |
---|
734 | !-- Synchronization of the model is done in pmci_synchronize. |
---|
735 | !-- Therefore the RMA window can be filled without |
---|
736 | !-- sychronization at this point and a barrier is not necessary. |
---|
737 | !-- Please note that waittime has to be set in pmc_s_fillbuffer AND |
---|
738 | !-- pmc_c_getbuffer |
---|
739 | IF ( PRESENT( waittime ) ) THEN |
---|
740 | t1 = pmc_time() |
---|
741 | CALL MPI_BARRIER( me%intra_comm, ierr ) |
---|
742 | t2 = pmc_time() |
---|
743 | waittime = t2 - t1 |
---|
744 | ENDIF |
---|
745 | |
---|
746 | ! |
---|
747 | !-- Wait for buffer is filled. |
---|
748 | !-- TODO: explain in more detail what is happening here. The barrier seems to |
---|
749 | !-- contradict what is said a few lines before (i.e. that no barrier is necessary) |
---|
750 | !-- TODO: In case of PRESENT( waittime ) the barrrier would be calles twice. Why? |
---|
751 | !-- Shouldn't it be done the same way as in pmc_putbuffer? |
---|
752 | CALL MPI_BARRIER( me%intra_comm, ierr ) |
---|
753 | |
---|
754 | DO ip = 1, me%inter_npes |
---|
755 | |
---|
756 | ape => me%pes(ip) |
---|
757 | |
---|
758 | DO j = 1, ape%nr_arrays |
---|
759 | |
---|
760 | ar => ape%array_list(j) |
---|
761 | |
---|
762 | IF ( ar%nrdims == 2 ) THEN |
---|
763 | nr = ape%nrele |
---|
764 | ELSEIF ( ar%nrdims == 3 ) THEN |
---|
765 | nr = ape%nrele * ar%a_dim(1) |
---|
766 | ENDIF |
---|
767 | |
---|
768 | buf_shape(1) = nr |
---|
769 | CALL C_F_POINTER( ar%recvbuf, buf, buf_shape ) |
---|
770 | |
---|
771 | ! |
---|
772 | !-- MPI passive target RMA |
---|
773 | !-- TODO: explain the above comment |
---|
774 | IF ( nr > 0 ) THEN |
---|
775 | target_disp = ar%recvindex - 1 |
---|
776 | CALL MPI_WIN_LOCK( MPI_LOCK_SHARED , ip-1, 0, & |
---|
777 | me%win_parent_child, ierr ) |
---|
778 | CALL MPI_GET( buf, nr, MPI_REAL, ip-1, target_disp, nr, MPI_REAL, & |
---|
779 | me%win_parent_child, ierr ) |
---|
780 | CALL MPI_WIN_UNLOCK( ip-1, me%win_parent_child, ierr ) |
---|
781 | ENDIF |
---|
782 | |
---|
783 | myindex = 1 |
---|
784 | IF ( ar%nrdims == 2 ) THEN |
---|
785 | |
---|
786 | CALL C_F_POINTER( ar%data, data_2d, ar%a_dim(1:2) ) |
---|
787 | |
---|
788 | DO ij = 1, ape%nrele |
---|
789 | data_2d(ape%locind(ij)%j,ape%locind(ij)%i) = buf(myindex) |
---|
790 | myindex = myindex + 1 |
---|
791 | ENDDO |
---|
792 | |
---|
793 | ELSEIF ( ar%nrdims == 3 ) THEN |
---|
794 | |
---|
795 | CALL C_F_POINTER( ar%data, data_3d, ar%a_dim(1:3) ) |
---|
796 | |
---|
797 | DO ij = 1, ape%nrele |
---|
798 | data_3d(:,ape%locind(ij)%j,ape%locind(ij)%i) = & |
---|
799 | buf(myindex:myindex+ar%a_dim(1)-1) |
---|
800 | myindex = myindex+ar%a_dim(1) |
---|
801 | ENDDO |
---|
802 | |
---|
803 | ENDIF |
---|
804 | |
---|
805 | ENDDO |
---|
806 | |
---|
807 | ENDDO |
---|
808 | |
---|
809 | END SUBROUTINE pmc_c_getbuffer |
---|
810 | |
---|
811 | |
---|
812 | |
---|
813 | SUBROUTINE pmc_c_putbuffer( waittime ) |
---|
814 | |
---|
815 | IMPLICIT NONE |
---|
816 | |
---|
817 | REAL(wp), INTENT(OUT), OPTIONAL :: waittime !< |
---|
818 | |
---|
819 | CHARACTER(LEN=da_namelen) :: myname !< |
---|
820 | |
---|
821 | INTEGER :: ierr !< |
---|
822 | INTEGER :: ij !< |
---|
823 | INTEGER :: ip !< |
---|
824 | INTEGER :: j !< |
---|
825 | INTEGER :: myindex !< |
---|
826 | INTEGER :: nr !< number of elements to get |
---|
827 | !< from parent |
---|
828 | INTEGER(KIND=MPI_ADDRESS_KIND) :: target_disp !< |
---|
829 | |
---|
830 | INTEGER, DIMENSION(1) :: buf_shape !< |
---|
831 | |
---|
832 | REAL(wp) :: t1 !< |
---|
833 | REAL(wp) :: t2 !< |
---|
834 | |
---|
835 | REAL(wp), POINTER, DIMENSION(:) :: buf !< |
---|
836 | REAL(wp), POINTER, DIMENSION(:,:) :: data_2d !< |
---|
837 | REAL(wp), POINTER, DIMENSION(:,:,:) :: data_3d !< |
---|
838 | |
---|
839 | TYPE(pedef), POINTER :: ape !< |
---|
840 | TYPE(arraydef), POINTER :: ar !< |
---|
841 | |
---|
842 | ! |
---|
843 | !-- Wait for empty buffer |
---|
844 | !-- TODO: explain what is done here |
---|
845 | t1 = pmc_time() |
---|
846 | CALL MPI_BARRIER( me%intra_comm, ierr ) |
---|
847 | t2 = pmc_time() |
---|
848 | IF ( PRESENT( waittime ) ) waittime = t2 - t1 |
---|
849 | |
---|
850 | DO ip = 1, me%inter_npes |
---|
851 | |
---|
852 | ape => me%pes(ip) |
---|
853 | |
---|
854 | DO j = 1, ape%nr_arrays |
---|
855 | |
---|
856 | ar => aPE%array_list(j) |
---|
857 | myindex = 1 |
---|
858 | |
---|
859 | IF ( ar%nrdims == 2 ) THEN |
---|
860 | |
---|
861 | buf_shape(1) = ape%nrele |
---|
862 | CALL C_F_POINTER( ar%sendbuf, buf, buf_shape ) |
---|
863 | CALL C_F_POINTER( ar%data, data_2d, ar%a_dim(1:2) ) |
---|
864 | |
---|
865 | DO ij = 1, ape%nrele |
---|
866 | buf(myindex) = data_2d(ape%locind(ij)%j,ape%locind(ij)%i) |
---|
867 | myindex = myindex + 1 |
---|
868 | ENDDO |
---|
869 | |
---|
870 | ELSEIF ( ar%nrdims == 3 ) THEN |
---|
871 | |
---|
872 | buf_shape(1) = ape%nrele*ar%a_dim(1) |
---|
873 | CALL C_F_POINTER( ar%sendbuf, buf, buf_shape ) |
---|
874 | CALL C_F_POINTER( ar%data, data_3d, ar%a_dim(1:3) ) |
---|
875 | |
---|
876 | DO ij = 1, ape%nrele |
---|
877 | buf(myindex:myindex+ar%a_dim(1)-1) = & |
---|
878 | data_3d(:,ape%locind(ij)%j,ape%locind(ij)%i) |
---|
879 | myindex = myindex + ar%a_dim(1) |
---|
880 | ENDDO |
---|
881 | |
---|
882 | ENDIF |
---|
883 | |
---|
884 | ENDDO |
---|
885 | |
---|
886 | ENDDO |
---|
887 | |
---|
888 | ! |
---|
889 | !-- TODO: Fence might do it, test later |
---|
890 | !-- Call MPI_WIN_FENCE( 0, me%win_parent_child, ierr) ! |
---|
891 | ! |
---|
892 | !-- Buffer is filled |
---|
893 | !-- TODO: explain in more detail what is happening here |
---|
894 | CALL MPI_Barrier(me%intra_comm, ierr) |
---|
895 | |
---|
896 | END SUBROUTINE pmc_c_putbuffer |
---|
897 | |
---|
898 | #endif |
---|
899 | END MODULE pmc_child |
---|