1 | #include "ep_lib.hpp" |
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2 | #include <mpi.h> |
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3 | #include "ep_declaration.hpp" |
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4 | #include "ep_mpi.hpp" |
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5 | |
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6 | using namespace std; |
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7 | |
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8 | |
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9 | namespace ep_lib |
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10 | { |
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11 | int MPI_Intercomm_create_kernel(MPI_Comm local_comm, int local_leader, MPI_Comm peer_comm, int remote_leader, int tag, MPI_Comm *newintercomm) |
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12 | { |
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13 | int ep_rank, ep_rank_loc, mpi_rank; |
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14 | int ep_size, num_ep, mpi_size; |
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15 | |
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16 | ep_rank = local_comm.ep_comm_ptr->size_rank_info[0].first; |
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17 | ep_rank_loc = local_comm.ep_comm_ptr->size_rank_info[1].first; |
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18 | mpi_rank = local_comm.ep_comm_ptr->size_rank_info[2].first; |
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19 | ep_size = local_comm.ep_comm_ptr->size_rank_info[0].second; |
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20 | num_ep = local_comm.ep_comm_ptr->size_rank_info[1].second; |
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21 | mpi_size = local_comm.ep_comm_ptr->size_rank_info[2].second; |
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22 | |
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23 | std::vector<int> rank_info[4]; //! 0->rank_in_world of local_comm, 1->rank_in_local_parent of local_comm |
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24 | //! 2->rank_in_world of remote_comm, 3->rank_in_local_parent of remote_comm |
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25 | |
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26 | int rank_in_world; |
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27 | int rank_in_local_parent; |
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28 | |
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29 | int rank_in_peer_mpi[2]; |
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30 | |
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31 | int local_ep_size = ep_size; |
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32 | int remote_ep_size; |
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33 | |
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34 | |
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35 | ::MPI_Comm local_mpi_comm = to_mpi_comm(local_comm.mpi_comm); |
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36 | |
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37 | |
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38 | ::MPI_Comm_rank(to_mpi_comm(MPI_COMM_WORLD.mpi_comm), &rank_in_world); |
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39 | ::MPI_Comm_rank(local_mpi_comm, &rank_in_local_parent); |
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40 | |
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41 | |
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42 | bool is_proc_master = false; |
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43 | bool is_local_leader = false; |
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44 | bool is_final_master = false; |
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45 | |
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46 | |
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47 | if(ep_rank == local_leader) { is_proc_master = true; is_local_leader = true; is_final_master = true;} |
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48 | if(ep_rank_loc == 0 && mpi_rank != local_comm.rank_map->at(local_leader).second) is_proc_master = true; |
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49 | |
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50 | |
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51 | int size_info[4]; //! used for choose size of rank_info 0-> mpi_size of local_comm, 1-> mpi_size of remote_comm |
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52 | |
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53 | int leader_info[4]; //! 0->world rank of local_leader, 1->world rank of remote leader |
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54 | |
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55 | |
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56 | std::vector<int> ep_info[2]; //! 0-> num_ep in local_comm, 1->num_ep in remote_comm |
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57 | |
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58 | std::vector<int> new_rank_info[4]; |
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59 | std::vector<int> new_ep_info[2]; |
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60 | |
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61 | std::vector<int> offset; |
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62 | |
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63 | if(is_proc_master) |
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64 | { |
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65 | |
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66 | size_info[0] = mpi_size; |
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67 | |
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68 | rank_info[0].resize(size_info[0]); |
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69 | rank_info[1].resize(size_info[0]); |
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70 | |
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71 | |
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72 | |
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73 | ep_info[0].resize(size_info[0]); |
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74 | |
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75 | vector<int> send_buf(6); |
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76 | vector<int> recv_buf(3*size_info[0]); |
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77 | |
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78 | send_buf[0] = rank_in_world; |
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79 | send_buf[1] = rank_in_local_parent; |
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80 | send_buf[2] = num_ep; |
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81 | |
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82 | ::MPI_Allgather(send_buf.data(), 3, to_mpi_type(MPI_INT), recv_buf.data(), 3, to_mpi_type(MPI_INT), local_mpi_comm); |
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83 | |
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84 | for(int i=0; i<size_info[0]; i++) |
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85 | { |
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86 | rank_info[0][i] = recv_buf[3*i]; |
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87 | rank_info[1][i] = recv_buf[3*i+1]; |
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88 | ep_info[0][i] = recv_buf[3*i+2]; |
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89 | } |
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90 | |
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91 | if(is_local_leader) |
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92 | { |
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93 | leader_info[0] = rank_in_world; |
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94 | leader_info[1] = remote_leader; |
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95 | |
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96 | ::MPI_Comm_rank(to_mpi_comm(peer_comm.mpi_comm), &rank_in_peer_mpi[0]); |
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97 | |
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98 | send_buf[0] = size_info[0]; |
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99 | send_buf[1] = local_ep_size; |
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100 | send_buf[2] = rank_in_peer_mpi[0]; |
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101 | |
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102 | |
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103 | |
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104 | MPI_Request requests[2]; |
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105 | MPI_Status statuses[2]; |
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106 | |
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107 | MPI_Isend(send_buf.data(), 3, MPI_INT, remote_leader, tag, peer_comm, &requests[0]); |
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108 | MPI_Irecv(recv_buf.data(), 3, MPI_INT, remote_leader, tag, peer_comm, &requests[1]); |
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109 | |
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110 | |
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111 | MPI_Waitall(2, requests, statuses); |
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112 | |
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113 | size_info[1] = recv_buf[0]; |
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114 | remote_ep_size = recv_buf[1]; |
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115 | rank_in_peer_mpi[1] = recv_buf[2]; |
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116 | |
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117 | } |
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118 | |
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119 | send_buf[0] = size_info[1]; |
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120 | send_buf[1] = leader_info[0]; |
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121 | send_buf[2] = leader_info[1]; |
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122 | send_buf[3] = rank_in_peer_mpi[0]; |
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123 | send_buf[4] = rank_in_peer_mpi[1]; |
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124 | |
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125 | ::MPI_Bcast(send_buf.data(), 5, to_mpi_type(MPI_INT), local_comm.rank_map->at(local_leader).second, local_mpi_comm); |
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126 | |
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127 | size_info[1] = send_buf[0]; |
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128 | leader_info[0] = send_buf[1]; |
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129 | leader_info[1] = send_buf[2]; |
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130 | rank_in_peer_mpi[0] = send_buf[3]; |
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131 | rank_in_peer_mpi[1] = send_buf[4]; |
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132 | |
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133 | |
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134 | rank_info[2].resize(size_info[1]); |
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135 | rank_info[3].resize(size_info[1]); |
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136 | |
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137 | ep_info[1].resize(size_info[1]); |
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138 | |
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139 | send_buf.resize(3*size_info[0]); |
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140 | recv_buf.resize(3*size_info[1]); |
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141 | |
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142 | if(is_local_leader) |
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143 | { |
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144 | MPI_Request requests[2]; |
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145 | MPI_Status statuses[2]; |
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146 | |
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147 | std::copy ( rank_info[0].data(), rank_info[0].data() + size_info[0], send_buf.begin() ); |
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148 | std::copy ( rank_info[1].data(), rank_info[1].data() + size_info[0], send_buf.begin() + size_info[0] ); |
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149 | std::copy ( ep_info[0].data(), ep_info[0].data() + size_info[0], send_buf.begin() + 2*size_info[0] ); |
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150 | |
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151 | MPI_Isend(send_buf.data(), 3*size_info[0], MPI_INT, remote_leader, tag+1, peer_comm, &requests[0]); |
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152 | MPI_Irecv(recv_buf.data(), 3*size_info[1], MPI_INT, remote_leader, tag+1, peer_comm, &requests[1]); |
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153 | |
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154 | MPI_Waitall(2, requests, statuses); |
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155 | } |
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156 | |
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157 | ::MPI_Bcast(recv_buf.data(), 3*size_info[1], to_mpi_type(MPI_INT), local_comm.rank_map->at(local_leader).second, local_mpi_comm); |
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158 | |
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159 | std::copy ( recv_buf.data(), recv_buf.data() + size_info[1], rank_info[2].begin() ); |
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160 | std::copy ( recv_buf.data() + size_info[1], recv_buf.data() + 2*size_info[1], rank_info[3].begin() ); |
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161 | std::copy ( recv_buf.data() + 2*size_info[1], recv_buf.data() + 3*size_info[1], ep_info[1].begin() ); |
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162 | |
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163 | |
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164 | offset.resize(size_info[0]); |
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165 | |
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166 | if(leader_info[0]<leader_info[1]) // erase all ranks doubled with remote_comm, except the local leader |
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167 | { |
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168 | |
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169 | bool found = false; |
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170 | int ep_local; |
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171 | int ep_remote; |
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172 | for(int i=0; i<size_info[0]; i++) |
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173 | { |
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174 | int target = rank_info[0][i]; |
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175 | found = false; |
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176 | for(int j=0; j<size_info[1]; j++) |
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177 | { |
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178 | if(target == rank_info[2][j]) |
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179 | { |
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180 | found = true; |
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181 | ep_local = ep_info[0][j]; |
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182 | ep_remote = ep_info[1][j]; |
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183 | break; |
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184 | } |
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185 | } |
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186 | if(found) |
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187 | { |
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188 | |
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189 | if(target == leader_info[0]) // the leader is doubled in remote |
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190 | { |
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191 | new_rank_info[0].push_back(target); |
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192 | new_rank_info[1].push_back(rank_info[1][i]); |
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193 | |
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194 | new_ep_info[0].push_back(ep_local + ep_remote); |
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195 | offset[i] = 0; |
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196 | } |
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197 | else |
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198 | { |
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199 | offset[i] = ep_local; |
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200 | } |
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201 | } |
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202 | else |
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203 | { |
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204 | new_rank_info[0].push_back(target); |
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205 | new_rank_info[1].push_back(rank_info[1][i]); |
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206 | |
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207 | new_ep_info[0].push_back(ep_info[0][i]); |
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208 | |
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209 | offset[i] = 0; |
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210 | } |
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211 | |
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212 | } |
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213 | } |
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214 | |
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215 | else // erase rank doubled with remote leader |
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216 | { |
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217 | |
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218 | bool found = false; |
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219 | int ep_local; |
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220 | int ep_remote; |
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221 | for(int i=0; i<size_info[0]; i++) |
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222 | { |
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223 | int target = rank_info[0][i]; |
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224 | found = false; |
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225 | for(int j=0; j<size_info[1]; j++) |
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226 | { |
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227 | |
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228 | if(target == rank_info[2][j]) |
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229 | { |
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230 | found = true; |
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231 | ep_local = ep_info[0][j]; |
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232 | ep_remote = ep_info[1][j]; |
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233 | break; |
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234 | } |
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235 | } |
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236 | if(found) |
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237 | { |
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238 | if(target != leader_info[1]) |
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239 | { |
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240 | new_rank_info[0].push_back(target); |
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241 | new_rank_info[1].push_back(rank_info[1][i]); |
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242 | |
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243 | new_ep_info[0].push_back(ep_local + ep_remote); |
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244 | offset[i] = 0; |
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245 | } |
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246 | else // found remote leader |
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247 | { |
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248 | offset[i] = ep_remote; |
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249 | } |
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250 | } |
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251 | else |
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252 | { |
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253 | new_rank_info[0].push_back(target); |
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254 | new_rank_info[1].push_back(rank_info[1][i]); |
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255 | |
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256 | new_ep_info[0].push_back(ep_info[0][i]); |
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257 | offset[i] = 0; |
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258 | } |
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259 | } |
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260 | } |
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261 | |
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262 | if(offset[mpi_rank] == 0) |
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263 | { |
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264 | is_final_master = true; |
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265 | } |
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266 | |
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267 | |
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268 | //! size_info[4]: 2->size of new_ep_info for local, 3->size of new_ep_info for remote |
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269 | |
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270 | if(is_local_leader) |
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271 | { |
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272 | size_info[2] = new_ep_info[0].size(); |
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273 | MPI_Request requests[2]; |
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274 | MPI_Status statuses[2]; |
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275 | MPI_Isend(&size_info[2], 1, MPI_INT, remote_leader, tag+2, peer_comm, &requests[0]); |
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276 | MPI_Irecv(&size_info[3], 1, MPI_INT, remote_leader, tag+2, peer_comm, &requests[1]); |
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277 | |
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278 | MPI_Waitall(2, requests, statuses); |
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279 | } |
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280 | |
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281 | ::MPI_Bcast(&size_info[2], 2, to_mpi_type(MPI_INT), local_comm.rank_map->at(local_leader).second, local_mpi_comm); |
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282 | |
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283 | new_rank_info[2].resize(size_info[3]); |
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284 | new_rank_info[3].resize(size_info[3]); |
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285 | new_ep_info[1].resize(size_info[3]); |
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286 | |
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287 | send_buf.resize(size_info[2]); |
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288 | recv_buf.resize(size_info[3]); |
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289 | |
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290 | if(is_local_leader) |
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291 | { |
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292 | MPI_Request requests[2]; |
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293 | MPI_Status statuses[2]; |
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294 | |
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295 | std::copy ( new_rank_info[0].data(), new_rank_info[0].data() + size_info[2], send_buf.begin() ); |
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296 | std::copy ( new_rank_info[1].data(), new_rank_info[1].data() + size_info[2], send_buf.begin() + size_info[2] ); |
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297 | std::copy ( new_ep_info[0].data(), new_ep_info[0].data() + size_info[0], send_buf.begin() + 2*size_info[2] ); |
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298 | |
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299 | MPI_Isend(send_buf.data(), 3*size_info[2], MPI_INT, remote_leader, tag+3, peer_comm, &requests[0]); |
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300 | MPI_Irecv(recv_buf.data(), 3*size_info[3], MPI_INT, remote_leader, tag+3, peer_comm, &requests[1]); |
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301 | |
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302 | MPI_Waitall(2, requests, statuses); |
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303 | } |
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304 | |
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305 | ::MPI_Bcast(recv_buf.data(), 3*size_info[3], to_mpi_type(MPI_INT), local_comm.rank_map->at(local_leader).second, local_mpi_comm); |
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306 | |
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307 | std::copy ( recv_buf.data(), recv_buf.data() + size_info[3], new_rank_info[2].begin() ); |
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308 | std::copy ( recv_buf.data() + size_info[3], recv_buf.data() + 2*size_info[3], new_rank_info[3].begin() ); |
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309 | std::copy ( recv_buf.data() + 2*size_info[3], recv_buf.data() + 3*size_info[3], new_ep_info[1].begin() ); |
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310 | |
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311 | } |
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312 | |
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313 | |
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314 | |
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315 | if(is_proc_master) |
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316 | { |
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317 | //! leader_info[4]: 2-> rank of local leader in new_group generated comm; |
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318 | // 3-> rank of remote leader in new_group generated comm; |
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319 | ::MPI_Group local_group; |
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320 | ::MPI_Group new_group; |
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321 | ::MPI_Comm *new_comm = new ::MPI_Comm; |
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322 | ::MPI_Comm *intercomm = new ::MPI_Comm; |
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323 | |
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324 | ::MPI_Comm_group(local_mpi_comm, &local_group); |
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325 | |
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326 | ::MPI_Group_incl(local_group, size_info[2], new_rank_info[1].data(), &new_group); |
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327 | |
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328 | ::MPI_Comm_create(local_mpi_comm, new_group, new_comm); |
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329 | |
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330 | |
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331 | |
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332 | if(is_local_leader) |
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333 | { |
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334 | ::MPI_Comm_rank(*new_comm, &leader_info[2]); |
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335 | } |
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336 | |
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337 | ::MPI_Bcast(&leader_info[2], 1, to_mpi_type(MPI_INT), local_comm.rank_map->at(local_leader).second, local_mpi_comm); |
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338 | |
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339 | if(new_comm != static_cast< ::MPI_Comm*>(MPI_COMM_NULL.mpi_comm)) |
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340 | { |
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341 | |
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342 | ::MPI_Barrier(*new_comm); |
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343 | |
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344 | ::MPI_Intercomm_create(*new_comm, leader_info[2], to_mpi_comm(peer_comm.mpi_comm), rank_in_peer_mpi[1], tag, intercomm); |
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345 | |
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346 | int id; |
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347 | |
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348 | ::MPI_Comm_rank(*new_comm, &id); |
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349 | int my_num_ep = new_ep_info[0][id]; |
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350 | |
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351 | MPI_Comm *ep_intercomm; |
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352 | MPI_Info info; |
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353 | MPI_Comm_create_endpoints(new_comm, my_num_ep, info, ep_intercomm); |
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354 | |
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355 | |
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356 | for(int i= 0; i<my_num_ep; i++) |
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357 | { |
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358 | ep_intercomm[i].is_intercomm = true; |
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359 | |
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360 | ep_intercomm[i].ep_comm_ptr->intercomm = new ep_lib::ep_intercomm; |
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361 | ep_intercomm[i].ep_comm_ptr->intercomm->mpi_inter_comm = intercomm; |
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362 | ep_intercomm[i].ep_comm_ptr->comm_label = leader_info[0]; |
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363 | } |
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364 | |
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365 | |
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366 | #pragma omp critical (write_to_tag_list) |
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367 | tag_list.push_back(make_pair( make_pair(tag, min(leader_info[0], leader_info[1])) , ep_intercomm)); |
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368 | } |
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369 | } |
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370 | |
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371 | vector<int> bcast_buf(8); |
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372 | if(is_local_leader) |
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373 | { |
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374 | std::copy(size_info, size_info+4, bcast_buf.begin()); |
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375 | std::copy(leader_info, leader_info+4, bcast_buf.begin()+4); |
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376 | } |
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377 | |
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378 | MPI_Bcast(bcast_buf.data(), 8, MPI_INT, local_leader, local_comm); |
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379 | |
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380 | if(!is_local_leader) |
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381 | { |
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382 | std::copy(bcast_buf.begin(), bcast_buf.begin()+4, size_info); |
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383 | std::copy(bcast_buf.begin()+4, bcast_buf.begin()+8, leader_info); |
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384 | } |
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385 | |
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386 | if(!is_local_leader) |
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387 | { |
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388 | new_rank_info[1].resize(size_info[2]); |
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389 | ep_info[1].resize(size_info[1]); |
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390 | offset.resize(size_info[0]); |
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391 | } |
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392 | |
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393 | bcast_buf.resize(size_info[2]+size_info[1]+size_info[0]+1); |
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394 | |
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395 | if(is_local_leader) |
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396 | { |
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397 | bcast_buf[0] = remote_ep_size; |
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398 | std::copy(new_rank_info[1].data(), new_rank_info[1].data()+size_info[2], bcast_buf.begin()+1); |
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399 | std::copy(ep_info[1].data(), ep_info[1].data()+size_info[1], bcast_buf.begin()+size_info[2]+1); |
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400 | std::copy(offset.data(), offset.data()+size_info[0], bcast_buf.begin()+size_info[2]+size_info[1]+1); |
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401 | } |
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402 | |
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403 | MPI_Bcast(bcast_buf.data(), size_info[2]+size_info[1]+size_info[0]+1, MPI_INT, local_leader, local_comm); |
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404 | |
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405 | if(!is_local_leader) |
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406 | { |
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407 | remote_ep_size = bcast_buf[0]; |
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408 | std::copy(bcast_buf.data()+1, bcast_buf.data()+1+size_info[2], new_rank_info[1].begin()); |
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409 | std::copy(bcast_buf.data()+1+size_info[2], bcast_buf.data()+1+size_info[2]+size_info[1], ep_info[1].begin()); |
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410 | std::copy(bcast_buf.data()+1+size_info[2]+size_info[1], bcast_buf.data()+1+size_info[2]+size_info[1]+size_info[0], offset.begin()); |
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411 | } |
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412 | |
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413 | int my_position = offset[rank_in_local_parent]+ep_rank_loc; |
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414 | |
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415 | MPI_Barrier_local(local_comm); |
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416 | #pragma omp flush |
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417 | |
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418 | |
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419 | #pragma omp critical (read_from_tag_list) |
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420 | { |
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421 | bool found = false; |
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422 | while(!found) |
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423 | { |
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424 | for(std::list<std::pair < std::pair<int,int>, MPI_Comm* > >::iterator iter = tag_list.begin(); iter!=tag_list.end(); iter++) |
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425 | { |
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426 | if((*iter).first == make_pair(tag, min(leader_info[0], leader_info[1]))) |
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427 | { |
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428 | *newintercomm = iter->second[my_position]; |
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429 | found = true; |
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430 | break; |
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431 | } |
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432 | } |
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433 | } |
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434 | } |
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435 | |
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436 | MPI_Barrier(local_comm); |
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437 | |
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438 | if(is_local_leader) |
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439 | { |
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440 | int local_flag = true; |
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441 | int remote_flag = false; |
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442 | MPI_Request mpi_requests[2]; |
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443 | MPI_Status mpi_statuses[2]; |
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444 | |
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445 | MPI_Isend(&local_flag, 1, MPI_INT, remote_leader, tag, peer_comm, &mpi_requests[0]); |
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446 | MPI_Irecv(&remote_flag, 1, MPI_INT, remote_leader, tag, peer_comm, &mpi_requests[1]); |
---|
447 | |
---|
448 | MPI_Waitall(2, mpi_requests, mpi_statuses); |
---|
449 | } |
---|
450 | |
---|
451 | |
---|
452 | MPI_Barrier(local_comm); |
---|
453 | |
---|
454 | if(is_proc_master) |
---|
455 | { |
---|
456 | for(std::list<std::pair < std::pair<int,int>, MPI_Comm* > >::iterator iter = tag_list.begin(); iter!=tag_list.end(); iter++) |
---|
457 | { |
---|
458 | if((*iter).first == make_pair(tag, min(leader_info[0], leader_info[1]))) |
---|
459 | { |
---|
460 | tag_list.erase(iter); |
---|
461 | break; |
---|
462 | } |
---|
463 | } |
---|
464 | } |
---|
465 | |
---|
466 | int intercomm_ep_rank, intercomm_ep_rank_loc, intercomm_mpi_rank; |
---|
467 | int intercomm_ep_size, intercomm_num_ep, intercomm_mpi_size; |
---|
468 | |
---|
469 | intercomm_ep_rank = newintercomm->ep_comm_ptr->size_rank_info[0].first; |
---|
470 | intercomm_ep_rank_loc = newintercomm->ep_comm_ptr->size_rank_info[1].first; |
---|
471 | intercomm_mpi_rank = newintercomm->ep_comm_ptr->size_rank_info[2].first; |
---|
472 | intercomm_ep_size = newintercomm->ep_comm_ptr->size_rank_info[0].second; |
---|
473 | intercomm_num_ep = newintercomm->ep_comm_ptr->size_rank_info[1].second; |
---|
474 | intercomm_mpi_size = newintercomm->ep_comm_ptr->size_rank_info[2].second; |
---|
475 | |
---|
476 | MPI_Bcast(&remote_ep_size, 1, MPI_INT, local_leader, local_comm); |
---|
477 | |
---|
478 | int my_rank_map_elem[2]; |
---|
479 | |
---|
480 | my_rank_map_elem[0] = intercomm_ep_rank; |
---|
481 | my_rank_map_elem[1] = (*newintercomm).ep_comm_ptr->comm_label; |
---|
482 | |
---|
483 | vector<pair<int, int> > local_rank_map_array; |
---|
484 | vector<pair<int, int> > remote_rank_map_array; |
---|
485 | |
---|
486 | |
---|
487 | (*newintercomm).ep_comm_ptr->intercomm->local_rank_map = new RANK_MAP; |
---|
488 | (*newintercomm).ep_comm_ptr->intercomm->local_rank_map->resize(local_ep_size); |
---|
489 | |
---|
490 | MPI_Allgather(my_rank_map_elem, 2, MPI_INT, |
---|
491 | (*newintercomm).ep_comm_ptr->intercomm->local_rank_map->data(), 2, MPI_INT, local_comm); |
---|
492 | |
---|
493 | (*newintercomm).ep_comm_ptr->intercomm->remote_rank_map = new RANK_MAP; |
---|
494 | (*newintercomm).ep_comm_ptr->intercomm->remote_rank_map->resize(remote_ep_size); |
---|
495 | |
---|
496 | (*newintercomm).ep_comm_ptr->intercomm->size_rank_info[0] = local_comm.ep_comm_ptr->size_rank_info[0]; |
---|
497 | (*newintercomm).ep_comm_ptr->intercomm->size_rank_info[1] = local_comm.ep_comm_ptr->size_rank_info[1]; |
---|
498 | (*newintercomm).ep_comm_ptr->intercomm->size_rank_info[2] = local_comm.ep_comm_ptr->size_rank_info[2]; |
---|
499 | |
---|
500 | int local_intercomm_size = intercomm_ep_size; |
---|
501 | int remote_intercomm_size; |
---|
502 | |
---|
503 | int new_bcast_root_0 = 0; |
---|
504 | int new_bcast_root = 0; |
---|
505 | |
---|
506 | |
---|
507 | if(is_local_leader) |
---|
508 | { |
---|
509 | MPI_Request requests[4]; |
---|
510 | MPI_Status statuses[4]; |
---|
511 | |
---|
512 | MPI_Isend((*newintercomm).ep_comm_ptr->intercomm->local_rank_map->data(), 2*local_ep_size, MPI_INT, remote_leader, tag+4, peer_comm, &requests[0]); |
---|
513 | MPI_Irecv((*newintercomm).ep_comm_ptr->intercomm->remote_rank_map->data(), 2*remote_ep_size, MPI_INT, remote_leader, tag+4, peer_comm, &requests[1]); |
---|
514 | |
---|
515 | MPI_Isend(&local_intercomm_size, 1, MPI_INT, remote_leader, tag+5, peer_comm, &requests[2]); |
---|
516 | MPI_Irecv(&remote_intercomm_size, 1, MPI_INT, remote_leader, tag+5, peer_comm, &requests[3]); |
---|
517 | |
---|
518 | MPI_Waitall(4, requests, statuses); |
---|
519 | |
---|
520 | new_bcast_root_0 = intercomm_ep_rank; |
---|
521 | } |
---|
522 | |
---|
523 | MPI_Allreduce(&new_bcast_root_0, &new_bcast_root, 1, MPI_INT, MPI_SUM, *newintercomm); |
---|
524 | |
---|
525 | |
---|
526 | MPI_Bcast((*newintercomm).ep_comm_ptr->intercomm->remote_rank_map->data(), 2*remote_ep_size, MPI_INT, local_leader, local_comm); |
---|
527 | MPI_Bcast(&remote_intercomm_size, 1, MPI_INT, new_bcast_root, *newintercomm); |
---|
528 | |
---|
529 | |
---|
530 | (*newintercomm).ep_comm_ptr->intercomm->intercomm_rank_map = new RANK_MAP; |
---|
531 | (*newintercomm).ep_comm_ptr->intercomm->intercomm_rank_map->resize(remote_intercomm_size); |
---|
532 | |
---|
533 | |
---|
534 | |
---|
535 | |
---|
536 | if(is_local_leader) |
---|
537 | { |
---|
538 | MPI_Request requests[2]; |
---|
539 | MPI_Status statuses[2]; |
---|
540 | |
---|
541 | MPI_Isend((*newintercomm).rank_map->data(), 2*local_intercomm_size, MPI_INT, remote_leader, tag+6, peer_comm, &requests[0]); |
---|
542 | MPI_Irecv((*newintercomm).ep_comm_ptr->intercomm->intercomm_rank_map->data(), 2*remote_intercomm_size, MPI_INT, remote_leader, tag+6, peer_comm, &requests[1]); |
---|
543 | |
---|
544 | MPI_Waitall(2, requests, statuses); |
---|
545 | } |
---|
546 | |
---|
547 | MPI_Bcast((*newintercomm).ep_comm_ptr->intercomm->intercomm_rank_map->data(), 2*remote_intercomm_size, MPI_INT, new_bcast_root, *newintercomm); |
---|
548 | |
---|
549 | (*newintercomm).ep_comm_ptr->intercomm->local_comm = &(local_comm.ep_comm_ptr->comm_list[ep_rank_loc]); |
---|
550 | (*newintercomm).ep_comm_ptr->intercomm->intercomm_tag = tag; |
---|
551 | |
---|
552 | /* |
---|
553 | for(int i=0; i<local_ep_size; i++) |
---|
554 | if(local_comm.ep_comm_ptr->comm_label == 0) printf("ep_rank (from EP) = %d, local_rank_map[%d] = (%d,%d)\n", intercomm_ep_rank, i, |
---|
555 | (*newintercomm).ep_comm_ptr->intercomm->local_rank_map->at(i).first, (*newintercomm).ep_comm_ptr->intercomm->local_rank_map->at(i).second); |
---|
556 | |
---|
557 | for(int i=0; i<remote_ep_size; i++) |
---|
558 | if(local_comm.ep_comm_ptr->comm_label == 0) printf("ep_rank (from EP) = %d, remote_rank_map[%d] = (%d,%d)\n", intercomm_ep_rank, i, |
---|
559 | (*newintercomm).ep_comm_ptr->intercomm->remote_rank_map->at(i).first, (*newintercomm).ep_comm_ptr->intercomm->remote_rank_map->at(i).second); |
---|
560 | |
---|
561 | for(int i=0; i<remote_intercomm_size; i++) |
---|
562 | if(local_comm.ep_comm_ptr->comm_label == 0) printf("ep_rank (from EP) = %d, intercomm_rank_map[%d] = (%d,%d)\n", intercomm_ep_rank, i, |
---|
563 | (*newintercomm).ep_comm_ptr->intercomm->intercomm_rank_map->at(i).first, (*newintercomm).ep_comm_ptr->intercomm->intercomm_rank_map->at(i).second); |
---|
564 | */ |
---|
565 | |
---|
566 | // for(int i=0; i<(*newintercomm).rank_map->size(); i++) |
---|
567 | // if(local_comm.ep_comm_ptr->comm_label != 99) printf("ep_rank = %d, rank_map[%d] = (%d,%d)\n", intercomm_ep_rank, i, |
---|
568 | // (*newintercomm).rank_map->at(i).first, (*newintercomm).rank_map->at(i).second); |
---|
569 | |
---|
570 | |
---|
571 | return MPI_SUCCESS; |
---|
572 | |
---|
573 | } |
---|
574 | |
---|
575 | |
---|
576 | |
---|
577 | |
---|
578 | int MPI_Intercomm_create_unique_leader(MPI_Comm local_comm, int local_leader, MPI_Comm peer_comm, int remote_leader, int tag, MPI_Comm *newintercomm) |
---|
579 | { |
---|
580 | //! mpi_size of local comm = 1 |
---|
581 | //! same world rank of leaders |
---|
582 | |
---|
583 | int ep_rank, ep_rank_loc, mpi_rank; |
---|
584 | int ep_size, num_ep, mpi_size; |
---|
585 | |
---|
586 | ep_rank = local_comm.ep_comm_ptr->size_rank_info[0].first; |
---|
587 | ep_rank_loc = local_comm.ep_comm_ptr->size_rank_info[1].first; |
---|
588 | mpi_rank = local_comm.ep_comm_ptr->size_rank_info[2].first; |
---|
589 | ep_size = local_comm.ep_comm_ptr->size_rank_info[0].second; |
---|
590 | num_ep = local_comm.ep_comm_ptr->size_rank_info[1].second; |
---|
591 | mpi_size = local_comm.ep_comm_ptr->size_rank_info[2].second; |
---|
592 | |
---|
593 | |
---|
594 | |
---|
595 | std::vector<int> rank_info[4]; //! 0->rank_in_world of local_comm, 1->rank_in_local_parent of local_comm |
---|
596 | //! 2->rank_in_world of remote_comm, 3->rank_in_local_parent of remote_comm |
---|
597 | |
---|
598 | int rank_in_world; |
---|
599 | |
---|
600 | int rank_in_peer_mpi[2]; |
---|
601 | |
---|
602 | ::MPI_Comm_rank(to_mpi_comm(MPI_COMM_WORLD.mpi_comm), &rank_in_world); |
---|
603 | |
---|
604 | |
---|
605 | int local_num_ep = num_ep; |
---|
606 | int remote_num_ep; |
---|
607 | int total_num_ep; |
---|
608 | |
---|
609 | int leader_rank_in_peer[2]; |
---|
610 | |
---|
611 | int my_position; |
---|
612 | int tag_label[2]; |
---|
613 | |
---|
614 | vector<int> send_buf(4); |
---|
615 | vector<int> recv_buf(4); |
---|
616 | |
---|
617 | |
---|
618 | if(ep_rank == local_leader) |
---|
619 | { |
---|
620 | MPI_Status status; |
---|
621 | |
---|
622 | MPI_Comm_rank(peer_comm, &leader_rank_in_peer[0]); |
---|
623 | |
---|
624 | send_buf[0] = local_num_ep; |
---|
625 | send_buf[1] = leader_rank_in_peer[0]; |
---|
626 | |
---|
627 | MPI_Request req_s, req_r; |
---|
628 | |
---|
629 | MPI_Isend(send_buf.data(), 2, MPI_INT, remote_leader, tag, peer_comm, &req_s); |
---|
630 | MPI_Irecv(recv_buf.data(), 2, MPI_INT, remote_leader, tag, peer_comm, &req_r); |
---|
631 | |
---|
632 | |
---|
633 | MPI_Wait(&req_s, &status); |
---|
634 | MPI_Wait(&req_r, &status); |
---|
635 | |
---|
636 | recv_buf[2] = leader_rank_in_peer[0]; |
---|
637 | |
---|
638 | } |
---|
639 | |
---|
640 | MPI_Bcast(recv_buf.data(), 3, MPI_INT, local_leader, local_comm); |
---|
641 | |
---|
642 | remote_num_ep = recv_buf[0]; |
---|
643 | leader_rank_in_peer[1] = recv_buf[1]; |
---|
644 | leader_rank_in_peer[0] = recv_buf[2]; |
---|
645 | |
---|
646 | total_num_ep = local_num_ep + remote_num_ep; |
---|
647 | |
---|
648 | |
---|
649 | if(leader_rank_in_peer[0] < leader_rank_in_peer[1]) |
---|
650 | { |
---|
651 | my_position = ep_rank_loc; |
---|
652 | //! LEADER create EP |
---|
653 | if(ep_rank == local_leader) |
---|
654 | { |
---|
655 | ::MPI_Comm *mpi_dup = new ::MPI_Comm; |
---|
656 | |
---|
657 | ::MPI_Comm_dup(to_mpi_comm(local_comm.mpi_comm), mpi_dup); |
---|
658 | |
---|
659 | MPI_Comm *ep_intercomm; |
---|
660 | MPI_Info info; |
---|
661 | MPI_Comm_create_endpoints(mpi_dup, total_num_ep, info, ep_intercomm); |
---|
662 | |
---|
663 | |
---|
664 | for(int i=0; i<total_num_ep; i++) |
---|
665 | { |
---|
666 | ep_intercomm[i].is_intercomm = true; |
---|
667 | ep_intercomm[i].ep_comm_ptr->intercomm = new ep_lib::ep_intercomm; |
---|
668 | ep_intercomm[i].ep_comm_ptr->intercomm->mpi_inter_comm = 0; |
---|
669 | |
---|
670 | ep_intercomm[i].ep_comm_ptr->comm_label = leader_rank_in_peer[0]; |
---|
671 | } |
---|
672 | |
---|
673 | tag_label[0] = TAG++; |
---|
674 | tag_label[1] = rank_in_world; |
---|
675 | |
---|
676 | #pragma omp critical (write_to_tag_list) |
---|
677 | tag_list.push_back(make_pair( make_pair(tag_label[0], tag_label[1]) , ep_intercomm)); |
---|
678 | |
---|
679 | MPI_Request req_s; |
---|
680 | MPI_Status sta_s; |
---|
681 | MPI_Isend(tag_label, 2, MPI_INT, remote_leader, tag, peer_comm, &req_s); |
---|
682 | |
---|
683 | MPI_Wait(&req_s, &sta_s); |
---|
684 | |
---|
685 | } |
---|
686 | } |
---|
687 | else |
---|
688 | { |
---|
689 | //! Wait for EP creation |
---|
690 | my_position = remote_num_ep + ep_rank_loc; |
---|
691 | if(ep_rank == local_leader) |
---|
692 | { |
---|
693 | MPI_Status status; |
---|
694 | MPI_Request req_r; |
---|
695 | MPI_Irecv(tag_label, 2, MPI_INT, remote_leader, tag, peer_comm, &req_r); |
---|
696 | MPI_Wait(&req_r, &status); |
---|
697 | } |
---|
698 | } |
---|
699 | |
---|
700 | MPI_Bcast(tag_label, 2, MPI_INT, local_leader, local_comm); |
---|
701 | |
---|
702 | |
---|
703 | |
---|
704 | |
---|
705 | #pragma omp critical (read_from_tag_list) |
---|
706 | { |
---|
707 | bool found = false; |
---|
708 | while(!found) |
---|
709 | { |
---|
710 | for(std::list<std::pair < std::pair<int,int>, MPI_Comm* > >::iterator iter = tag_list.begin(); iter!=tag_list.end(); iter++) |
---|
711 | { |
---|
712 | if((*iter).first == make_pair(tag_label[0], tag_label[1])) |
---|
713 | { |
---|
714 | *newintercomm = iter->second[my_position]; |
---|
715 | found = true; |
---|
716 | break; |
---|
717 | } |
---|
718 | } |
---|
719 | } |
---|
720 | } |
---|
721 | |
---|
722 | MPI_Barrier_local(local_comm); |
---|
723 | |
---|
724 | if(leader_rank_in_peer[0] < leader_rank_in_peer[1]) |
---|
725 | { |
---|
726 | for(std::list<std::pair < std::pair<int,int>, MPI_Comm* > >::iterator iter = tag_list.begin(); iter!=tag_list.end(); iter++) |
---|
727 | { |
---|
728 | if((*iter).first == make_pair(tag_label[0], tag_label[1])) |
---|
729 | { |
---|
730 | tag_list.erase(iter); |
---|
731 | break; |
---|
732 | } |
---|
733 | } |
---|
734 | } |
---|
735 | |
---|
736 | |
---|
737 | |
---|
738 | int intercomm_ep_rank, intercomm_ep_rank_loc, intercomm_mpi_rank; |
---|
739 | int intercomm_ep_size, intercomm_num_ep, intercomm_mpi_size; |
---|
740 | |
---|
741 | intercomm_ep_rank = newintercomm->ep_comm_ptr->size_rank_info[0].first; |
---|
742 | intercomm_ep_rank_loc = newintercomm->ep_comm_ptr->size_rank_info[1].first; |
---|
743 | intercomm_mpi_rank = newintercomm->ep_comm_ptr->size_rank_info[2].first; |
---|
744 | intercomm_ep_size = newintercomm->ep_comm_ptr->size_rank_info[0].second; |
---|
745 | intercomm_num_ep = newintercomm->ep_comm_ptr->size_rank_info[1].second; |
---|
746 | intercomm_mpi_size = newintercomm->ep_comm_ptr->size_rank_info[2].second; |
---|
747 | |
---|
748 | |
---|
749 | |
---|
750 | (*newintercomm).ep_comm_ptr->intercomm->local_rank_map = new RANK_MAP; |
---|
751 | (*newintercomm).ep_comm_ptr->intercomm->remote_rank_map = new RANK_MAP; |
---|
752 | (*newintercomm).ep_comm_ptr->intercomm->local_rank_map->resize(local_num_ep); |
---|
753 | (*newintercomm).ep_comm_ptr->intercomm->remote_rank_map->resize(remote_num_ep); |
---|
754 | |
---|
755 | (*newintercomm).ep_comm_ptr->intercomm->size_rank_info[0] = local_comm.ep_comm_ptr->size_rank_info[0]; |
---|
756 | (*newintercomm).ep_comm_ptr->intercomm->size_rank_info[1] = local_comm.ep_comm_ptr->size_rank_info[1]; |
---|
757 | (*newintercomm).ep_comm_ptr->intercomm->size_rank_info[2] = local_comm.ep_comm_ptr->size_rank_info[2]; |
---|
758 | |
---|
759 | |
---|
760 | |
---|
761 | int local_rank_map_ele[2]; |
---|
762 | local_rank_map_ele[0] = intercomm_ep_rank; |
---|
763 | local_rank_map_ele[1] = (*newintercomm).ep_comm_ptr->comm_label; |
---|
764 | |
---|
765 | MPI_Allgather(local_rank_map_ele, 2, MPI_INT, |
---|
766 | (*newintercomm).ep_comm_ptr->intercomm->local_rank_map->data(), 2, MPI_INT, local_comm); |
---|
767 | |
---|
768 | if(ep_rank == local_leader) |
---|
769 | { |
---|
770 | MPI_Status status; |
---|
771 | MPI_Request req_s, req_r; |
---|
772 | |
---|
773 | MPI_Isend((*newintercomm).ep_comm_ptr->intercomm->local_rank_map->data(), 2*local_num_ep, MPI_INT, remote_leader, tag, peer_comm, &req_s); |
---|
774 | MPI_Irecv((*newintercomm).ep_comm_ptr->intercomm->remote_rank_map->data(), 2*remote_num_ep, MPI_INT, remote_leader, tag, peer_comm, &req_r); |
---|
775 | |
---|
776 | |
---|
777 | MPI_Wait(&req_s, &status); |
---|
778 | MPI_Wait(&req_r, &status); |
---|
779 | |
---|
780 | } |
---|
781 | |
---|
782 | MPI_Bcast((*newintercomm).ep_comm_ptr->intercomm->remote_rank_map->data(), 2*remote_num_ep, MPI_INT, local_leader, local_comm); |
---|
783 | (*newintercomm).ep_comm_ptr->intercomm->local_comm = &(local_comm.ep_comm_ptr->comm_list[ep_rank_loc]); |
---|
784 | (*newintercomm).ep_comm_ptr->intercomm->intercomm_tag = tag; |
---|
785 | |
---|
786 | |
---|
787 | return MPI_SUCCESS; |
---|
788 | } |
---|
789 | |
---|
790 | |
---|
791 | } |
---|