1 | /*! |
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2 | \file ep_wait.cpp |
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3 | \since 2 may 2016 |
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4 | |
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5 | \brief Definitions of MPI wait function: MPI_Wait, MPI_Waitall, MPI_Waitsome, MPI_Waitany |
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6 | */ |
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7 | |
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8 | #include "ep_lib.hpp" |
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9 | #include <mpi.h> |
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10 | #include "ep_declaration.hpp" |
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11 | |
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12 | using namespace std; |
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13 | |
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14 | |
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15 | |
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16 | namespace ep_lib |
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17 | { |
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18 | |
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19 | int MPI_Wait(MPI_Request *request, MPI_Status *status) |
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20 | { |
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21 | |
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22 | if(request->type == 1) //=>isend |
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23 | { |
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24 | ::MPI_Request mpi_request = static_cast< ::MPI_Request >(request->mpi_request); |
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25 | ::MPI_Status mpi_status; |
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26 | ::MPI_Errhandler_set(MPI_COMM_WORLD_STD, MPI_ERRORS_RETURN); |
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27 | int error_code = ::MPI_Wait(&mpi_request, &mpi_status); |
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28 | if (error_code != MPI_SUCCESS) { |
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29 | |
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30 | char error_string[BUFSIZ]; |
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31 | int length_of_error_string, error_class; |
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32 | |
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33 | ::MPI_Error_class(error_code, &error_class); |
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34 | ::MPI_Error_string(error_class, error_string, &length_of_error_string); |
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35 | printf("%s\n", error_string); |
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36 | } |
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37 | |
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38 | status->mpi_status = &mpi_status; |
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39 | status->ep_src = request->ep_src; |
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40 | status->ep_tag = request->ep_tag; |
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41 | status->ep_datatype = request->ep_datatype; |
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42 | |
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43 | return 0; |
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44 | } |
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45 | |
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46 | if(request->type == 3) //=>imrecv |
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47 | { |
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48 | ::MPI_Request mpi_request = static_cast< ::MPI_Request >(request->mpi_request); |
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49 | ::MPI_Status mpi_status; |
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50 | ::MPI_Errhandler_set(MPI_COMM_WORLD_STD, MPI_ERRORS_RETURN); |
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51 | int error_code = ::MPI_Wait(&mpi_request, &mpi_status); |
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52 | if (error_code != MPI_SUCCESS) { |
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53 | |
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54 | char error_string[BUFSIZ]; |
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55 | int length_of_error_string, error_class; |
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56 | |
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57 | ::MPI_Error_class(error_code, &error_class); |
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58 | ::MPI_Error_string(error_class, error_string, &length_of_error_string); |
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59 | printf("%s\n", error_string); |
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60 | } |
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61 | |
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62 | |
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63 | status->mpi_status = new ::MPI_Status(mpi_status); |
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64 | status->ep_src = request->ep_src; |
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65 | status->ep_tag = request->ep_tag; |
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66 | status->ep_datatype = request->ep_datatype; |
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67 | |
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68 | //check_sum_recv(request->buf, count, request->ep_datatype, request->ep_src, request->ep_tag, request->comm, 2); |
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69 | return 0; |
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70 | |
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71 | } |
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72 | |
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73 | if(request->type == 2) //=>irecv not probed |
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74 | { |
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75 | |
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76 | while(true) |
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77 | { |
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78 | Message_Check(request->comm); |
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79 | // parcours pending list |
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80 | for(std::list<MPI_Request* >::iterator it = (request->pending_ptr)->begin(); it!=(request->pending_ptr)->end(); ) |
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81 | { |
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82 | if(*it == request) |
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83 | { |
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84 | int probed = false; |
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85 | MPI_Message message; |
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86 | |
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87 | MPI_Improbe(request->ep_src, request->ep_tag, request->comm, &probed, &message, status); |
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88 | |
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89 | if(probed) |
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90 | { |
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91 | int recv_count; |
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92 | MPI_Get_count(status, request->ep_datatype, &recv_count); |
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93 | MPI_Mrecv(request->buf, recv_count, request->ep_datatype, &message, status); |
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94 | (request->pending_ptr)->erase(it); |
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95 | //printf("wait : pending request processed, size = %d\n", (request->pending_ptr)->size()); |
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96 | request->type = 3; |
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97 | |
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98 | return 0; |
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99 | } |
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100 | |
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101 | it++; |
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102 | } |
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103 | else |
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104 | { |
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105 | int probed = false; |
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106 | MPI_Message message; |
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107 | MPI_Status status; |
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108 | |
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109 | MPI_Improbe((*it)->ep_src, (*it)->ep_tag, (*it)->comm, &probed, &message, &status); |
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110 | |
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111 | if(probed) |
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112 | { |
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113 | int recv_count; |
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114 | MPI_Get_count(&status, (*it)->ep_datatype, &recv_count); |
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115 | MPI_Imrecv((*it)->buf, recv_count, (*it)->ep_datatype, &message, *it); |
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116 | |
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117 | (request->pending_ptr)->erase(it); |
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118 | |
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119 | it = (request->pending_ptr)->begin(); |
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120 | //printf("wait : pending request processed, size = %d\n", (request->pending_ptr)->size()); |
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121 | } |
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122 | else it++; |
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123 | } |
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124 | } |
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125 | |
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126 | } |
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127 | |
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128 | |
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129 | } |
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130 | |
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131 | return MPI_SUCCESS; |
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132 | |
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133 | } /*end of mpi_wait*/ |
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134 | |
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135 | |
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136 | |
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137 | |
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138 | |
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139 | |
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140 | int MPI_Waitall(int count, MPI_Request *array_of_requests, MPI_Status *array_of_statuses) |
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141 | { |
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142 | //int dest_rank; |
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143 | //MPI_Comm_rank(MPI_COMM_WORLD, &dest_rank); |
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144 | //printf("proc %d enters waitall\n", dest_rank); |
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145 | |
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146 | int finished = 0; |
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147 | int finished_index[count]; |
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148 | |
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149 | for(int i=0; i<count; i++) |
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150 | printf("pending add = %p\n", array_of_requests[i].pending_ptr); |
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151 | |
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152 | //if(EP_PendingRequests == 0) EP_PendingRequests = new std::list< MPI_Request* >; |
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153 | //printf("pending size = %d, add = %p\n", EP_PendingRequests->size(), EP_PendingRequests); |
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154 | |
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155 | for(int i=0; i<count; i++) |
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156 | { |
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157 | finished_index[i] = false; |
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158 | } |
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159 | |
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160 | while(finished < count) |
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161 | { |
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162 | |
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163 | for(int i=0; i<count; i++) |
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164 | { |
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165 | if(finished_index[i] == false) // this request has not been tested. |
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166 | { |
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167 | if(array_of_requests[i].type == 1 || array_of_requests[i].type == 3) // isend or imrecv |
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168 | { |
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169 | //MPI_Wait(&array_of_requests[i], &array_of_statuses[i]); |
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170 | int tested; |
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171 | MPI_Test(&array_of_requests[i], &tested, &array_of_statuses[i]); |
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172 | if(!tested) MPI_Wait(&array_of_requests[i], &array_of_statuses[i]); |
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173 | finished++; |
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174 | finished_index[i] = true; |
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175 | } |
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176 | else // irecv |
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177 | { |
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178 | |
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179 | Message_Check(array_of_requests[i].comm); |
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180 | // parcours pending list |
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181 | for(std::list<MPI_Request* >::iterator it = (array_of_requests[i].pending_ptr)->begin(); it!=(array_of_requests[i].pending_ptr)->end(); ) |
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182 | { |
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183 | bool matched = false; |
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184 | for(int j=0; j<count; j++) |
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185 | { |
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186 | if(*it == &array_of_requests[j]) |
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187 | { |
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188 | int probed = false; |
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189 | MPI_Message message; |
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190 | |
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191 | MPI_Improbe((*it)->ep_src, (*it)->ep_tag, (*it)->comm, &probed, &message, &array_of_statuses[j]); |
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192 | |
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193 | if(probed) |
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194 | { |
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195 | int recv_count; |
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196 | MPI_Get_count(&array_of_statuses[j], array_of_requests[j].ep_datatype, &recv_count); |
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197 | MPI_Mrecv(array_of_requests[j].buf, recv_count, array_of_requests[j].ep_datatype, &message, &array_of_statuses[j]); |
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198 | //check_sum_recv(array_of_requests[i].buf, recv_count, array_of_requests[i].ep_datatype, array_of_requests[i].ep_src, array_of_requests[i].ep_tag, array_of_requests[i].comm, 2); |
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199 | (array_of_requests[i].pending_ptr)->erase(it); |
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200 | array_of_requests[j].type = 3; |
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201 | finished++; |
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202 | finished_index[j] = true; |
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203 | matched = true; |
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204 | it = (array_of_requests[i].pending_ptr)->begin(); |
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205 | j=count; |
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206 | //printf("waitall : pending request processed, size = %d\n", (*(array_of_requests[i].pending_ptr))->size()); |
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207 | //printf("matched = %d, j=%d, src = %d, tag = %d, probed = %d\n", matched, j, (*it)->ep_src, (*it)->ep_tag, probed); |
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208 | } |
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209 | } |
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210 | |
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211 | } |
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212 | |
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213 | if(!matched) |
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214 | { |
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215 | int probed = false; |
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216 | MPI_Message message; |
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217 | MPI_Status status; |
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218 | |
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219 | MPI_Improbe((*it)->ep_src, (*it)->ep_tag, (*it)->comm, &probed, &message, &status); |
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220 | |
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221 | if(probed) |
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222 | { |
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223 | int recv_count; |
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224 | MPI_Get_count(&status, (*it)->ep_datatype, &recv_count); |
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225 | MPI_Imrecv((*it)->buf, recv_count, (*it)->ep_datatype, &message, *it); |
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226 | |
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227 | (array_of_requests[i].pending_ptr)->erase(it); |
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228 | |
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229 | it = (array_of_requests[i].pending_ptr)->begin(); |
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230 | //printf("waitall : pending request processed, size = %d\n", (*(array_of_requests[i].pending_ptr))->size()); |
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231 | } |
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232 | else it++; |
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233 | } |
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234 | } |
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235 | |
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236 | } |
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237 | } |
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238 | } |
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239 | } |
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240 | //printf("proc %d exits waitall\n", dest_rank); |
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241 | return MPI_SUCCESS; |
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242 | } /* end of mpi_waitall*/ |
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243 | |
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244 | |
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245 | } |
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