1 | /*! |
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2 | \file ep_gather.cpp |
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3 | \since 2 may 2016 |
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4 | |
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5 | \brief Definitions of MPI collective function: MPI_Gather, MPI_Allgather |
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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 | #include "ep_mpi.hpp" |
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12 | |
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13 | using namespace std; |
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14 | |
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15 | namespace ep_lib |
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16 | { |
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17 | int MPI_Gather_local(const void *sendbuf, int count, MPI_Datatype datatype, void *recvbuf, int local_root, MPI_Comm comm) |
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18 | { |
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19 | assert(valid_type(datatype)); |
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20 | |
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21 | ::MPI_Aint datasize, lb; |
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22 | ::MPI_Type_get_extent(to_mpi_type(datatype), &lb, &datasize); |
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23 | |
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24 | int ep_rank_loc = comm.ep_comm_ptr->size_rank_info[1].first; |
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25 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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26 | |
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27 | #pragma omp critical (_gather) |
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28 | comm.my_buffer->void_buffer[ep_rank_loc] = const_cast< void* >(sendbuf); |
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29 | |
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30 | MPI_Barrier_local(comm); |
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31 | |
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32 | if(ep_rank_loc == local_root) |
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33 | { |
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34 | for(int i=0; i<num_ep; i++) |
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35 | memcpy(recvbuf + datasize * i * count, comm.my_buffer->void_buffer[i], datasize * count); |
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36 | |
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37 | //printf("local_recvbuf = %d %d \n", static_cast<int*>(recvbuf)[0], static_cast<int*>(recvbuf)[1] ); |
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38 | } |
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39 | |
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40 | MPI_Barrier_local(comm); |
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41 | } |
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42 | |
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43 | int MPI_Gather(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm) |
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44 | { |
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45 | if(!comm.is_ep) |
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46 | { |
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47 | return ::MPI_Gather(const_cast<void*>(sendbuf), sendcount, to_mpi_type(sendtype), recvbuf, recvcount, to_mpi_type(recvtype), |
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48 | root, to_mpi_comm(comm.mpi_comm)); |
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49 | } |
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50 | |
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51 | assert(sendcount == recvcount && sendtype == recvtype); |
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52 | |
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53 | int ep_rank = comm.ep_comm_ptr->size_rank_info[0].first; |
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54 | int ep_rank_loc = comm.ep_comm_ptr->size_rank_info[1].first; |
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55 | int mpi_rank = comm.ep_comm_ptr->size_rank_info[2].first; |
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56 | int ep_size = comm.ep_comm_ptr->size_rank_info[0].second; |
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57 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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58 | int mpi_size = comm.ep_comm_ptr->size_rank_info[2].second; |
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59 | |
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60 | int root_mpi_rank = comm.rank_map->at(root).second; |
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61 | int root_ep_loc = comm.rank_map->at(root).first; |
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62 | |
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63 | ::MPI_Aint datasize, lb; |
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64 | ::MPI_Type_get_extent(to_mpi_type(sendtype), &lb, &datasize); |
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65 | |
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66 | bool is_master = (ep_rank_loc==0 && mpi_rank != root_mpi_rank ) || ep_rank == root; |
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67 | bool is_root = ep_rank == root; |
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68 | |
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69 | void* local_recvbuf; |
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70 | |
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71 | if(is_master) |
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72 | { |
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73 | local_recvbuf = new void*[datasize * num_ep * sendcount]; |
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74 | } |
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75 | |
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76 | void* tmp_recvbuf; |
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77 | if(is_root) tmp_recvbuf = new void*[datasize * recvcount * ep_size]; |
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78 | |
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79 | |
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80 | if(mpi_rank == root_mpi_rank) MPI_Gather_local(sendbuf, sendcount, sendtype, local_recvbuf, root_ep_loc, comm); |
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81 | else MPI_Gather_local(sendbuf, sendcount, sendtype, local_recvbuf, 0, comm); |
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82 | |
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83 | std::vector<int> recvcounts(mpi_size, 0); |
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84 | std::vector<int> displs(mpi_size, 0); |
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85 | |
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86 | |
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87 | if(is_master) |
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88 | { |
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89 | for(int i=0; i<ep_size; i++) |
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90 | { |
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91 | recvcounts[comm.rank_map->at(i).second]+=sendcount; |
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92 | } |
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93 | |
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94 | for(int i=1; i<mpi_size; i++) |
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95 | displs[i] = displs[i-1] + recvcounts[i-1]; |
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96 | |
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97 | ::MPI_Gatherv(local_recvbuf, sendcount*num_ep, sendtype, tmp_recvbuf, recvcounts.data(), displs.data(), recvtype, root_mpi_rank, to_mpi_comm(comm.mpi_comm)); |
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98 | } |
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99 | |
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100 | |
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101 | // reorder data |
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102 | if(is_root) |
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103 | { |
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104 | // printf("tmp_recvbuf = %d %d %d %d %d %d %d %d\n", static_cast<int*>(tmp_recvbuf)[0], static_cast<int*>(tmp_recvbuf)[1], |
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105 | // static_cast<int*>(tmp_recvbuf)[2], static_cast<int*>(tmp_recvbuf)[3], |
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106 | // static_cast<int*>(tmp_recvbuf)[4], static_cast<int*>(tmp_recvbuf)[5], |
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107 | // static_cast<int*>(tmp_recvbuf)[6], static_cast<int*>(tmp_recvbuf)[7] ); |
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108 | |
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109 | int offset; |
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110 | for(int i=0; i<ep_size; i++) |
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111 | { |
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112 | offset = displs[comm.rank_map->at(i).second] + comm.rank_map->at(i).first * sendcount; |
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113 | memcpy(recvbuf + i*sendcount*datasize, tmp_recvbuf+offset*datasize, sendcount*datasize); |
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114 | |
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115 | |
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116 | } |
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117 | |
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118 | } |
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119 | |
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120 | |
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121 | if(is_master) |
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122 | { |
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123 | delete[] local_recvbuf; |
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124 | } |
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125 | if(is_root) delete[] tmp_recvbuf; |
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126 | |
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127 | } |
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128 | |
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129 | // int MPI_Allgather(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm) |
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130 | // { |
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131 | |
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132 | // if(!comm.is_ep && comm.mpi_comm) |
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133 | // { |
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134 | // ::MPI_Allgather(const_cast<void*>(sendbuf), sendcount, static_cast< ::MPI_Datatype>(sendtype), recvbuf, recvcount, static_cast< ::MPI_Datatype>(recvtype), |
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135 | // static_cast< ::MPI_Comm>(comm.mpi_comm)); |
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136 | // return 0; |
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137 | // } |
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138 | |
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139 | // if(!comm.mpi_comm) return 0; |
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140 | |
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141 | // assert(sendcount == recvcount); |
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142 | |
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143 | // assert(valid_type(sendtype) && valid_type(recvtype)); |
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144 | |
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145 | // MPI_Datatype datatype = sendtype; |
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146 | // int count = sendcount; |
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147 | |
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148 | // ::MPI_Aint datasize, lb; |
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149 | |
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150 | // ::MPI_Type_get_extent(to_mpi_type(datatype), &lb, &datasize); |
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151 | |
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152 | |
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153 | // int ep_rank = comm.ep_comm_ptr->size_rank_info[0].first; |
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154 | // int ep_rank_loc = comm.ep_comm_ptr->size_rank_info[1].first; |
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155 | // int mpi_rank = comm.ep_comm_ptr->size_rank_info[2].first; |
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156 | // int ep_size = comm.ep_comm_ptr->size_rank_info[0].second; |
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157 | // int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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158 | // int mpi_size = comm.ep_comm_ptr->size_rank_info[2].second; |
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159 | |
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160 | // bool is_master = ep_rank_loc==0; |
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161 | |
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162 | // void* local_recvbuf; |
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163 | // void* tmp_recvbuf; |
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164 | |
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165 | |
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166 | // if(is_master) |
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167 | // { |
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168 | // local_recvbuf = new void*[datasize * num_ep * count]; |
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169 | // tmp_recvbuf = new void*[datasize * count * ep_size]; |
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170 | // } |
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171 | |
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172 | // MPI_Gather_local(sendbuf, count, datatype, local_recvbuf, 0, comm); |
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173 | |
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174 | |
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175 | // int* mpi_recvcounts; |
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176 | // int *mpi_displs; |
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177 | |
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178 | // if(is_master) |
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179 | // { |
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180 | |
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181 | // mpi_recvcounts = new int[mpi_size]; |
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182 | // mpi_displs = new int[mpi_size]; |
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183 | |
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184 | // int local_sendcount = num_ep * count; |
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185 | |
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186 | // ::MPI_Allgather(&local_sendcount, 1, to_mpi_type(MPI_INT), mpi_recvcounts, 1, to_mpi_type(MPI_INT), to_mpi_comm(comm.mpi_comm)); |
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187 | |
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188 | // mpi_displs[0] = 0; |
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189 | // for(int i=1; i<mpi_size; i++) |
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190 | // { |
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191 | // mpi_displs[i] = mpi_displs[i-1] + mpi_recvcounts[i-1]; |
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192 | // } |
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193 | |
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194 | |
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195 | // ::MPI_Allgatherv(local_recvbuf, num_ep * count, to_mpi_type(datatype), tmp_recvbuf, mpi_recvcounts, mpi_displs, to_mpi_type(datatype), to_mpi_comm(comm.mpi_comm)); |
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196 | |
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197 | |
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198 | // // reorder |
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199 | // int offset; |
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200 | // for(int i=0; i<ep_size; i++) |
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201 | // { |
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202 | // offset = mpi_displs[comm.rank_map->at(i).second] + comm.rank_map->at(i).first * sendcount; |
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203 | // memcpy(recvbuf + i*sendcount*datasize, tmp_recvbuf+offset*datasize, sendcount*datasize); |
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204 | // } |
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205 | |
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206 | // delete[] mpi_recvcounts; |
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207 | // delete[] mpi_displs; |
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208 | // } |
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209 | |
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210 | // MPI_Bcast_local(recvbuf, count*ep_size, datatype, 0, comm); |
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211 | |
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212 | // MPI_Barrier(comm); |
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213 | |
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214 | |
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215 | // if(is_master) |
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216 | // { |
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217 | // delete[] local_recvbuf; |
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218 | // delete[] tmp_recvbuf; |
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219 | |
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220 | // } |
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221 | |
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222 | // } |
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223 | |
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224 | int MPI_Gather_local2(const void *sendbuf, int count, MPI_Datatype datatype, void *recvbuf, MPI_Comm comm) |
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225 | { |
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226 | if(datatype == MPI_INT) |
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227 | { |
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228 | Debug("datatype is INT\n"); |
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229 | return MPI_Gather_local_int(sendbuf, count, recvbuf, comm); |
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230 | } |
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231 | else if(datatype == MPI_FLOAT) |
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232 | { |
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233 | Debug("datatype is FLOAT\n"); |
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234 | return MPI_Gather_local_float(sendbuf, count, recvbuf, comm); |
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235 | } |
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236 | else if(datatype == MPI_DOUBLE) |
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237 | { |
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238 | Debug("datatype is DOUBLE\n"); |
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239 | return MPI_Gather_local_double(sendbuf, count, recvbuf, comm); |
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240 | } |
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241 | else if(datatype == MPI_LONG) |
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242 | { |
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243 | Debug("datatype is LONG\n"); |
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244 | return MPI_Gather_local_long(sendbuf, count, recvbuf, comm); |
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245 | } |
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246 | else if(datatype == MPI_UNSIGNED_LONG) |
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247 | { |
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248 | Debug("datatype is uLONG\n"); |
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249 | return MPI_Gather_local_ulong(sendbuf, count, recvbuf, comm); |
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250 | } |
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251 | else if(datatype == MPI_CHAR) |
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252 | { |
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253 | Debug("datatype is CHAR\n"); |
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254 | return MPI_Gather_local_char(sendbuf, count, recvbuf, comm); |
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255 | } |
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256 | else |
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257 | { |
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258 | printf("MPI_Gather Datatype not supported!\n"); |
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259 | exit(0); |
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260 | } |
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261 | } |
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262 | |
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263 | int MPI_Gather_local_int(const void *sendbuf, int count, void *recvbuf, MPI_Comm comm) |
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264 | { |
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265 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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266 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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267 | |
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268 | int *buffer = comm.my_buffer->buf_int; |
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269 | int *send_buf = static_cast<int*>(const_cast<void*>(sendbuf)); |
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270 | int *recv_buf = static_cast<int*>(recvbuf); |
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271 | |
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272 | if(my_rank == 0) |
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273 | { |
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274 | copy(send_buf, send_buf+count, recv_buf); |
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275 | } |
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276 | |
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277 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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278 | { |
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279 | for(int k=1; k<num_ep; k++) |
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280 | { |
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281 | if(my_rank == k) |
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282 | { |
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283 | #pragma omp critical (write_to_buffer) |
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284 | { |
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285 | copy(send_buf+j, send_buf+j+min(BUFFER_SIZE, count-j), buffer); |
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286 | #pragma omp flush |
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287 | } |
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288 | } |
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289 | |
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290 | MPI_Barrier_local(comm); |
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291 | |
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292 | if(my_rank == 0) |
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293 | { |
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294 | #pragma omp flush |
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295 | #pragma omp critical (read_from_buffer) |
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296 | { |
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297 | copy(buffer, buffer+min(BUFFER_SIZE, count-j), recv_buf+j+k*count); |
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298 | } |
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299 | } |
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300 | |
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301 | MPI_Barrier_local(comm); |
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302 | } |
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303 | } |
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304 | } |
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305 | |
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306 | int MPI_Gather_local_float(const void *sendbuf, int count, void *recvbuf, MPI_Comm comm) |
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307 | { |
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308 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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309 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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310 | |
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311 | float *buffer = comm.my_buffer->buf_float; |
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312 | float *send_buf = static_cast<float*>(const_cast<void*>(sendbuf)); |
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313 | float *recv_buf = static_cast<float*>(recvbuf); |
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314 | |
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315 | if(my_rank == 0) |
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316 | { |
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317 | copy(send_buf, send_buf+count, recv_buf); |
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318 | } |
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319 | |
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320 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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321 | { |
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322 | for(int k=1; k<num_ep; k++) |
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323 | { |
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324 | if(my_rank == k) |
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325 | { |
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326 | #pragma omp critical (write_to_buffer) |
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327 | { |
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328 | copy(send_buf+j, send_buf+j+min(BUFFER_SIZE, count-j), buffer); |
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329 | #pragma omp flush |
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330 | } |
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331 | } |
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332 | |
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333 | MPI_Barrier_local(comm); |
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334 | |
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335 | if(my_rank == 0) |
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336 | { |
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337 | #pragma omp flush |
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338 | #pragma omp critical (read_from_buffer) |
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339 | { |
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340 | copy(buffer, buffer+min(BUFFER_SIZE, count-j), recv_buf+j+k*count); |
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341 | } |
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342 | } |
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343 | |
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344 | MPI_Barrier_local(comm); |
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345 | } |
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346 | } |
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347 | } |
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348 | |
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349 | int MPI_Gather_local_double(const void *sendbuf, int count, void *recvbuf, MPI_Comm comm) |
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350 | { |
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351 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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352 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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353 | |
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354 | double *buffer = comm.my_buffer->buf_double; |
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355 | double *send_buf = static_cast<double*>(const_cast<void*>(sendbuf)); |
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356 | double *recv_buf = static_cast<double*>(recvbuf); |
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357 | |
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358 | if(my_rank == 0) |
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359 | { |
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360 | copy(send_buf, send_buf+count, recv_buf); |
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361 | } |
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362 | |
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363 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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364 | { |
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365 | for(int k=1; k<num_ep; k++) |
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366 | { |
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367 | if(my_rank == k) |
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368 | { |
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369 | #pragma omp critical (write_to_buffer) |
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370 | { |
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371 | copy(send_buf+j, send_buf+j+min(BUFFER_SIZE, count-j), buffer); |
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372 | #pragma omp flush |
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373 | } |
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374 | } |
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375 | |
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376 | MPI_Barrier_local(comm); |
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377 | |
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378 | if(my_rank == 0) |
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379 | { |
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380 | #pragma omp flush |
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381 | #pragma omp critical (read_from_buffer) |
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382 | { |
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383 | copy(buffer, buffer+min(BUFFER_SIZE, count-j), recv_buf+j+k*count); |
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384 | } |
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385 | } |
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386 | |
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387 | MPI_Barrier_local(comm); |
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388 | } |
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389 | } |
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390 | } |
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391 | |
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392 | int MPI_Gather_local_long(const void *sendbuf, int count, void *recvbuf, MPI_Comm comm) |
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393 | { |
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394 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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395 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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396 | |
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397 | long *buffer = comm.my_buffer->buf_long; |
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398 | long *send_buf = static_cast<long*>(const_cast<void*>(sendbuf)); |
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399 | long *recv_buf = static_cast<long*>(recvbuf); |
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400 | |
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401 | if(my_rank == 0) |
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402 | { |
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403 | copy(send_buf, send_buf+count, recv_buf); |
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404 | } |
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405 | |
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406 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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407 | { |
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408 | for(int k=1; k<num_ep; k++) |
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409 | { |
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410 | if(my_rank == k) |
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411 | { |
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412 | #pragma omp critical (write_to_buffer) |
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413 | { |
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414 | copy(send_buf+j, send_buf+j+min(BUFFER_SIZE, count-j), buffer); |
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415 | #pragma omp flush |
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416 | } |
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417 | } |
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418 | |
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419 | MPI_Barrier_local(comm); |
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420 | |
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421 | if(my_rank == 0) |
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422 | { |
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423 | #pragma omp flush |
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424 | #pragma omp critical (read_from_buffer) |
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425 | { |
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426 | copy(buffer, buffer+min(BUFFER_SIZE, count-j), recv_buf+j+k*count); |
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427 | } |
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428 | } |
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429 | |
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430 | MPI_Barrier_local(comm); |
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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 | int MPI_Gather_local_ulong(const void *sendbuf, int count, void *recvbuf, MPI_Comm comm) |
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436 | { |
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437 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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438 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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439 | |
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440 | unsigned long *buffer = comm.my_buffer->buf_ulong; |
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441 | unsigned long *send_buf = static_cast<unsigned long*>(const_cast<void*>(sendbuf)); |
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442 | unsigned long *recv_buf = static_cast<unsigned long*>(recvbuf); |
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443 | |
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444 | if(my_rank == 0) |
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445 | { |
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446 | copy(send_buf, send_buf+count, recv_buf); |
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447 | } |
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448 | |
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449 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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450 | { |
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451 | for(int k=1; k<num_ep; k++) |
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452 | { |
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453 | if(my_rank == k) |
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454 | { |
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455 | #pragma omp critical (write_to_buffer) |
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456 | { |
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457 | copy(send_buf+j, send_buf+j+min(BUFFER_SIZE, count-j), buffer); |
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458 | #pragma omp flush |
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459 | } |
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460 | } |
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461 | |
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462 | MPI_Barrier_local(comm); |
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463 | |
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464 | if(my_rank == 0) |
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465 | { |
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466 | #pragma omp flush |
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467 | #pragma omp critical (read_from_buffer) |
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468 | { |
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469 | copy(buffer, buffer+min(BUFFER_SIZE, count-j), recv_buf+j+k*count); |
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470 | } |
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471 | } |
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472 | |
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473 | MPI_Barrier_local(comm); |
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474 | } |
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475 | } |
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476 | } |
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477 | |
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478 | |
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479 | int MPI_Gather_local_char(const void *sendbuf, int count, void *recvbuf, MPI_Comm comm) |
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480 | { |
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481 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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482 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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483 | |
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484 | char *buffer = comm.my_buffer->buf_char; |
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485 | char *send_buf = static_cast<char*>(const_cast<void*>(sendbuf)); |
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486 | char *recv_buf = static_cast<char*>(recvbuf); |
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487 | |
---|
488 | if(my_rank == 0) |
---|
489 | { |
---|
490 | copy(send_buf, send_buf+count, recv_buf); |
---|
491 | } |
---|
492 | |
---|
493 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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494 | { |
---|
495 | for(int k=1; k<num_ep; k++) |
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496 | { |
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497 | if(my_rank == k) |
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498 | { |
---|
499 | #pragma omp critical (write_to_buffer) |
---|
500 | { |
---|
501 | copy(send_buf+j, send_buf+j+min(BUFFER_SIZE, count-j), buffer); |
---|
502 | #pragma omp flush |
---|
503 | } |
---|
504 | } |
---|
505 | |
---|
506 | MPI_Barrier_local(comm); |
---|
507 | |
---|
508 | if(my_rank == 0) |
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509 | { |
---|
510 | #pragma omp flush |
---|
511 | #pragma omp critical (read_from_buffer) |
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512 | { |
---|
513 | copy(buffer, buffer+min(BUFFER_SIZE, count-j), recv_buf+j+k*count); |
---|
514 | } |
---|
515 | } |
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516 | |
---|
517 | MPI_Barrier_local(comm); |
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518 | } |
---|
519 | } |
---|
520 | } |
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521 | |
---|
522 | |
---|
523 | |
---|
524 | int MPI_Gather2(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm) |
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525 | { |
---|
526 | if(!comm.is_ep && comm.mpi_comm) |
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527 | { |
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528 | ::MPI_Gather(const_cast<void*>(sendbuf), sendcount, static_cast< ::MPI_Datatype>(sendtype), recvbuf, recvcount, static_cast< ::MPI_Datatype>(recvtype), |
---|
529 | root, static_cast< ::MPI_Comm>(comm.mpi_comm)); |
---|
530 | return 0; |
---|
531 | } |
---|
532 | |
---|
533 | if(!comm.mpi_comm) return 0; |
---|
534 | |
---|
535 | MPI_Bcast(&recvcount, 1, MPI_INT, root, comm); |
---|
536 | |
---|
537 | assert(static_cast< ::MPI_Datatype>(sendtype) == static_cast< ::MPI_Datatype>(recvtype) && sendcount == recvcount); |
---|
538 | |
---|
539 | MPI_Datatype datatype = sendtype; |
---|
540 | int count = sendcount; |
---|
541 | |
---|
542 | int ep_rank, ep_rank_loc, mpi_rank; |
---|
543 | int ep_size, num_ep, mpi_size; |
---|
544 | |
---|
545 | ep_rank = comm.ep_comm_ptr->size_rank_info[0].first; |
---|
546 | ep_rank_loc = comm.ep_comm_ptr->size_rank_info[1].first; |
---|
547 | mpi_rank = comm.ep_comm_ptr->size_rank_info[2].first; |
---|
548 | ep_size = comm.ep_comm_ptr->size_rank_info[0].second; |
---|
549 | num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
---|
550 | mpi_size = comm.ep_comm_ptr->size_rank_info[2].second; |
---|
551 | |
---|
552 | |
---|
553 | int root_mpi_rank = comm.rank_map->at(root).second; |
---|
554 | int root_ep_loc = comm.rank_map->at(root).first; |
---|
555 | |
---|
556 | |
---|
557 | ::MPI_Aint datasize, lb; |
---|
558 | |
---|
559 | ::MPI_Type_get_extent(static_cast< ::MPI_Datatype>(datatype), &lb, &datasize); |
---|
560 | |
---|
561 | void *local_gather_recvbuf; |
---|
562 | void *master_recvbuf; |
---|
563 | if(ep_rank_loc == 0 && mpi_rank == root_mpi_rank && root_ep_loc != 0) |
---|
564 | { |
---|
565 | master_recvbuf = new void*[datasize*ep_size*count]; |
---|
566 | } |
---|
567 | |
---|
568 | if(ep_rank_loc==0) |
---|
569 | { |
---|
570 | local_gather_recvbuf = new void*[datasize*num_ep*count]; |
---|
571 | } |
---|
572 | |
---|
573 | // local gather to master |
---|
574 | MPI_Gather_local2(sendbuf, count, datatype, local_gather_recvbuf, comm); |
---|
575 | |
---|
576 | //MPI_Gather |
---|
577 | |
---|
578 | if(ep_rank_loc == 0) |
---|
579 | { |
---|
580 | int *gatherv_recvcnt; |
---|
581 | int *gatherv_displs; |
---|
582 | int gatherv_cnt = count*num_ep; |
---|
583 | |
---|
584 | gatherv_recvcnt = new int[mpi_size]; |
---|
585 | gatherv_displs = new int[mpi_size]; |
---|
586 | |
---|
587 | |
---|
588 | ::MPI_Allgather(&gatherv_cnt, 1, MPI_INT, gatherv_recvcnt, 1, MPI_INT, static_cast< ::MPI_Comm>(comm.mpi_comm)); |
---|
589 | |
---|
590 | gatherv_displs[0] = 0; |
---|
591 | for(int i=1; i<mpi_size; i++) |
---|
592 | { |
---|
593 | gatherv_displs[i] = gatherv_recvcnt[i-1] + gatherv_displs[i-1]; |
---|
594 | } |
---|
595 | |
---|
596 | if(root_ep_loc != 0) // gather to root_master |
---|
597 | { |
---|
598 | ::MPI_Gatherv(local_gather_recvbuf, count*num_ep, static_cast< ::MPI_Datatype>(datatype), master_recvbuf, gatherv_recvcnt, |
---|
599 | gatherv_displs, static_cast< ::MPI_Datatype>(datatype), root_mpi_rank, static_cast< ::MPI_Comm>(comm.mpi_comm)); |
---|
600 | } |
---|
601 | else |
---|
602 | { |
---|
603 | ::MPI_Gatherv(local_gather_recvbuf, count*num_ep, static_cast< ::MPI_Datatype>(datatype), recvbuf, gatherv_recvcnt, |
---|
604 | gatherv_displs, static_cast< ::MPI_Datatype>(datatype), root_mpi_rank, static_cast< ::MPI_Comm>(comm.mpi_comm)); |
---|
605 | } |
---|
606 | |
---|
607 | delete[] gatherv_recvcnt; |
---|
608 | delete[] gatherv_displs; |
---|
609 | } |
---|
610 | |
---|
611 | |
---|
612 | if(root_ep_loc != 0 && mpi_rank == root_mpi_rank) // root is not master, master send to root and root receive from master |
---|
613 | { |
---|
614 | innode_memcpy(0, master_recvbuf, root_ep_loc, recvbuf, count*ep_size, datatype, comm); |
---|
615 | } |
---|
616 | |
---|
617 | |
---|
618 | |
---|
619 | if(ep_rank_loc==0) |
---|
620 | { |
---|
621 | if(datatype == MPI_INT) |
---|
622 | { |
---|
623 | delete[] static_cast<int*>(local_gather_recvbuf); |
---|
624 | } |
---|
625 | else if(datatype == MPI_FLOAT) |
---|
626 | { |
---|
627 | delete[] static_cast<float*>(local_gather_recvbuf); |
---|
628 | } |
---|
629 | else if(datatype == MPI_DOUBLE) |
---|
630 | { |
---|
631 | delete[] static_cast<double*>(local_gather_recvbuf); |
---|
632 | } |
---|
633 | else if(datatype == MPI_CHAR) |
---|
634 | { |
---|
635 | delete[] static_cast<char*>(local_gather_recvbuf); |
---|
636 | } |
---|
637 | else if(datatype == MPI_LONG) |
---|
638 | { |
---|
639 | delete[] static_cast<long*>(local_gather_recvbuf); |
---|
640 | } |
---|
641 | else// if(datatype == MPI_UNSIGNED_LONG) |
---|
642 | { |
---|
643 | delete[] static_cast<unsigned long*>(local_gather_recvbuf); |
---|
644 | } |
---|
645 | |
---|
646 | if(root_ep_loc != 0 && mpi_rank == root_mpi_rank) delete[] master_recvbuf; |
---|
647 | } |
---|
648 | } |
---|
649 | |
---|
650 | |
---|
651 | int MPI_Allgather2(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm) |
---|
652 | { |
---|
653 | if(!comm.is_ep && comm.mpi_comm) |
---|
654 | { |
---|
655 | ::MPI_Allgather(const_cast<void*>(sendbuf), sendcount, static_cast< ::MPI_Datatype>(sendtype), recvbuf, recvcount, static_cast< ::MPI_Datatype>(recvtype), |
---|
656 | static_cast< ::MPI_Comm>(comm.mpi_comm)); |
---|
657 | return 0; |
---|
658 | } |
---|
659 | |
---|
660 | if(!comm.mpi_comm) return 0; |
---|
661 | |
---|
662 | assert(static_cast< ::MPI_Datatype>(sendtype) == static_cast< ::MPI_Datatype>(recvtype) && sendcount == recvcount); |
---|
663 | |
---|
664 | MPI_Datatype datatype = sendtype; |
---|
665 | int count = sendcount; |
---|
666 | |
---|
667 | int ep_rank, ep_rank_loc, mpi_rank; |
---|
668 | int ep_size, num_ep, mpi_size; |
---|
669 | |
---|
670 | ep_rank = comm.ep_comm_ptr->size_rank_info[0].first; |
---|
671 | ep_rank_loc = comm.ep_comm_ptr->size_rank_info[1].first; |
---|
672 | mpi_rank = comm.ep_comm_ptr->size_rank_info[2].first; |
---|
673 | ep_size = comm.ep_comm_ptr->size_rank_info[0].second; |
---|
674 | num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
---|
675 | mpi_size = comm.ep_comm_ptr->size_rank_info[2].second; |
---|
676 | |
---|
677 | |
---|
678 | ::MPI_Aint datasize, lb; |
---|
679 | |
---|
680 | ::MPI_Type_get_extent(static_cast< ::MPI_Datatype>(datatype), &lb, &datasize); |
---|
681 | |
---|
682 | void *local_gather_recvbuf; |
---|
683 | |
---|
684 | if(ep_rank_loc==0) |
---|
685 | { |
---|
686 | local_gather_recvbuf = new void*[datasize*num_ep*count]; |
---|
687 | } |
---|
688 | |
---|
689 | // local gather to master |
---|
690 | MPI_Gather_local2(sendbuf, count, datatype, local_gather_recvbuf, comm); |
---|
691 | |
---|
692 | //MPI_Gather |
---|
693 | |
---|
694 | if(ep_rank_loc == 0) |
---|
695 | { |
---|
696 | int *gatherv_recvcnt; |
---|
697 | int *gatherv_displs; |
---|
698 | int gatherv_cnt = count*num_ep; |
---|
699 | |
---|
700 | gatherv_recvcnt = new int[mpi_size]; |
---|
701 | gatherv_displs = new int[mpi_size]; |
---|
702 | |
---|
703 | ::MPI_Allgather(&gatherv_cnt, 1, MPI_INT, gatherv_recvcnt, 1, MPI_INT, static_cast< ::MPI_Comm>(comm.mpi_comm)); |
---|
704 | |
---|
705 | gatherv_displs[0] = 0; |
---|
706 | for(int i=1; i<mpi_size; i++) |
---|
707 | { |
---|
708 | gatherv_displs[i] = gatherv_recvcnt[i-1] + gatherv_displs[i-1]; |
---|
709 | } |
---|
710 | |
---|
711 | ::MPI_Allgatherv(local_gather_recvbuf, count*num_ep, static_cast< ::MPI_Datatype>(datatype), recvbuf, gatherv_recvcnt, |
---|
712 | gatherv_displs, static_cast< ::MPI_Datatype>(datatype), static_cast< ::MPI_Comm>(comm.mpi_comm)); |
---|
713 | |
---|
714 | delete[] gatherv_recvcnt; |
---|
715 | delete[] gatherv_displs; |
---|
716 | } |
---|
717 | |
---|
718 | MPI_Bcast_local2(recvbuf, count*ep_size, datatype, comm); |
---|
719 | |
---|
720 | |
---|
721 | if(ep_rank_loc==0) |
---|
722 | { |
---|
723 | if(datatype == MPI_INT) |
---|
724 | { |
---|
725 | delete[] static_cast<int*>(local_gather_recvbuf); |
---|
726 | } |
---|
727 | else if(datatype == MPI_FLOAT) |
---|
728 | { |
---|
729 | delete[] static_cast<float*>(local_gather_recvbuf); |
---|
730 | } |
---|
731 | else if(datatype == MPI_DOUBLE) |
---|
732 | { |
---|
733 | delete[] static_cast<double*>(local_gather_recvbuf); |
---|
734 | } |
---|
735 | else if(datatype == MPI_CHAR) |
---|
736 | { |
---|
737 | delete[] static_cast<char*>(local_gather_recvbuf); |
---|
738 | } |
---|
739 | else if(datatype == MPI_LONG) |
---|
740 | { |
---|
741 | delete[] static_cast<long*>(local_gather_recvbuf); |
---|
742 | } |
---|
743 | else// if(datatype == MPI_UNSIGNED_LONG) |
---|
744 | { |
---|
745 | delete[] static_cast<unsigned long*>(local_gather_recvbuf); |
---|
746 | } |
---|
747 | } |
---|
748 | } |
---|
749 | |
---|
750 | |
---|
751 | } |
---|