1 | /*! |
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2 | \file ep_recv.cpp |
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3 | \since 2 may 2016 |
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4 | |
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5 | \brief Definitions of MPI receive functions: MPI_Recv, MPI_Mrecv, MPI_Irecv, MPI_Imrecv |
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6 | */ |
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7 | |
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8 | |
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9 | #include "ep_lib.hpp" |
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10 | #include <mpi.h> |
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11 | #include "ep_declaration.hpp" |
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12 | |
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13 | using namespace std; |
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14 | |
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15 | extern std::list< ep_lib::MPI_Request* > * EP_PendingRequests; |
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16 | #pragma omp threadprivate(EP_PendingRequests) |
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17 | |
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18 | namespace ep_lib |
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19 | { |
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20 | |
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21 | |
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22 | int MPI_Recv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Status *status) |
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23 | { |
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24 | int dest_rank; |
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25 | MPI_Comm_rank(comm, &dest_rank); |
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26 | |
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27 | if(!comm.is_ep) |
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28 | { |
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29 | ::MPI_Comm mpi_comm = static_cast< ::MPI_Comm >(comm.mpi_comm); |
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30 | ::MPI_Status mpi_status; |
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31 | ::MPI_Recv(buf, count, static_cast< ::MPI_Datatype >(datatype), src<0? MPI_ANY_SOURCE : src, tag<0? MPI_ANY_TAG: tag, mpi_comm, &mpi_status); |
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32 | |
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33 | status->ep_src = src; |
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34 | status->ep_tag = tag; |
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35 | status->ep_datatype = datatype; |
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36 | |
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37 | return 0; |
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38 | } |
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39 | |
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40 | Message_Check(comm); |
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41 | |
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42 | MPI_Request request; |
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43 | MPI_Irecv(buf, count, datatype, src, tag, comm, &request); |
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44 | MPI_Wait(&request, status); |
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45 | |
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46 | return 0; |
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47 | } |
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48 | |
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49 | |
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50 | |
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51 | |
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52 | int MPI_Irecv(void *buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Request *request) |
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53 | { |
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54 | |
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55 | Debug("MPI_Irecv with EP"); |
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56 | int dest_rank; |
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57 | MPI_Comm_rank(comm, &dest_rank); |
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58 | int world_rank; |
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59 | MPI_Comm_rank(MPI_COMM_WORLD_STD, &world_rank); |
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60 | |
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61 | if(!comm.is_ep) |
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62 | { |
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63 | ::MPI_Request mpi_request; |
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64 | ::MPI_Comm mpi_comm = static_cast< ::MPI_Comm > (comm.mpi_comm); |
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65 | ::MPI_Irecv(buf, count, static_cast< ::MPI_Datatype> (datatype), src<0? MPI_ANY_SOURCE : src, tag<0? MPI_ANY_TAG: tag, mpi_comm, &mpi_request); |
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66 | |
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67 | request->mpi_request = mpi_request; |
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68 | request->ep_src = src; |
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69 | request->ep_datatype = datatype; |
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70 | request->ep_tag = tag; |
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71 | } |
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72 | |
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73 | request->mpi_request = MPI_REQUEST_NULL_STD; |
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74 | request->buf = buf; |
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75 | request->comm = comm; |
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76 | request->type = 2; |
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77 | |
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78 | request->ep_src = src; |
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79 | request->ep_tag = tag; |
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80 | request->ep_datatype = datatype; |
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81 | |
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82 | |
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83 | |
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84 | /* With Improbe*/ |
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85 | Message_Check(comm); |
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86 | |
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87 | if(EP_PendingRequests == 0 ) |
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88 | { |
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89 | EP_PendingRequests = new std::list< MPI_Request* >; |
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90 | //printf("proc %d(%d) : EP_PendingRequests allocated, add = %p\n", dest_rank, world_rank, EP_PendingRequests); |
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91 | } |
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92 | |
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93 | |
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94 | EP_PendingRequests->push_back(request); |
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95 | |
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96 | Request_Check(); |
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97 | //printf("proc %d(%d) : EP_PendingRequests insert one request, src = %d(%d), tag = %d(%d), size = %d; request add = %p\n", |
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98 | // dest_rank, world_rank, EP_PendingRequests->back()->ep_src, request->ep_src, |
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99 | // EP_PendingRequests->back()->ep_tag, request->ep_tag, |
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100 | // EP_PendingRequests->size(), request); |
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101 | |
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102 | // check all EP_PendingRequests |
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103 | //for(std::list<MPI_Request* >::iterator it = EP_PendingRequests->begin(); it!=EP_PendingRequests->end(); ) |
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104 | //{ |
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105 | //if((*it)->type == 3) |
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106 | //{ |
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107 | // EP_PendingRequests->erase(it); |
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108 | // it = EP_PendingRequests->begin(); |
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109 | // continue; |
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110 | // } |
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111 | |
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112 | //int probed = false; |
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113 | //MPI_Message pending_message; |
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114 | //MPI_Status pending_status; |
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115 | |
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116 | //MPI_Improbe((*it)->ep_src, (*it)->ep_tag, (*it)->comm, &probed, &pending_message, &pending_status); |
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117 | |
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118 | //if(probed) |
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119 | //{ |
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120 | //int count; |
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121 | //MPI_Get_count(&pending_status, (*it)->ep_datatype, &count); |
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122 | //MPI_Imrecv((*it)->buf, count, (*it)->ep_datatype, &pending_message, *it); |
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123 | |
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124 | //EP_PendingRequests->erase(it); |
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125 | //if(EP_PendingRequests->empty()) return 0; |
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126 | |
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127 | //it = EP_PendingRequests->begin(); |
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128 | //continue; |
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129 | // } |
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130 | |
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131 | //it++; |
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132 | // } |
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133 | |
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134 | return 0; |
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135 | } |
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136 | |
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137 | int MPI_Imrecv(void *buf, int count, MPI_Datatype datatype, MPI_Message *message, MPI_Request *request) |
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138 | { |
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139 | Debug("MPI_Imrecv"); |
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140 | |
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141 | request->type = 3; |
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142 | |
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143 | ::MPI_Request mpi_request; |
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144 | ::MPI_Message mpi_message = static_cast< ::MPI_Message >(message->mpi_message); |
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145 | |
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146 | ::MPI_Imrecv(buf, count, static_cast< ::MPI_Datatype>(datatype), &mpi_message, &mpi_request); |
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147 | |
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148 | request->mpi_request = mpi_request; |
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149 | request->ep_datatype = datatype; |
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150 | request->ep_tag = message->ep_tag; |
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151 | request->ep_src = message->ep_src; |
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152 | |
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153 | return 0; |
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154 | } |
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155 | |
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156 | |
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157 | int MPI_Mrecv(void *buf, int count, MPI_Datatype datatype, MPI_Message *message, MPI_Status *status) |
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158 | { |
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159 | Debug("EP Mrecv called\n"); |
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160 | |
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161 | ::MPI_Status mpi_status; |
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162 | ::MPI_Message mpi_message = static_cast< ::MPI_Message >(message->mpi_message); |
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163 | |
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164 | ::MPI_Mrecv(buf, count, static_cast< ::MPI_Datatype>(datatype), &mpi_message, &mpi_status); |
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165 | |
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166 | status->mpi_status = new ::MPI_Status(mpi_status); |
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167 | status->ep_src = message->ep_src; |
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168 | status->ep_datatype = datatype; |
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169 | status->ep_tag = message->ep_tag; |
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170 | |
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171 | //check_sum_recv(buf, count, datatype, message->ep_src, message->ep_tag); |
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172 | |
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173 | return 0; |
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174 | } |
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175 | |
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176 | } |
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177 | |
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178 | |
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179 | |
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