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_Gatherv, MPI_Allgatherv |
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6 | */ |
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7 | |
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8 | #include "ep_lib.hpp" |
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9 | #include <mpi.h> |
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10 | #include "ep_declaration.hpp" |
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11 | |
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12 | |
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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_Gatherv_local(const void *sendbuf, int count, MPI_Datatype datatype, void *recvbuf, const int recvcounts[], const int displs[], MPI_Comm comm) |
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18 | { |
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19 | if(datatype == MPI_INT) |
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20 | { |
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21 | Debug("datatype is INT\n"); |
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22 | return MPI_Gatherv_local_int(sendbuf, count, recvbuf, recvcounts, displs, comm); |
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23 | } |
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24 | else if(datatype == MPI_FLOAT) |
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25 | { |
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26 | Debug("datatype is FLOAT\n"); |
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27 | return MPI_Gatherv_local_float(sendbuf, count, recvbuf, recvcounts, displs, comm); |
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28 | } |
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29 | else if(datatype == MPI_DOUBLE) |
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30 | { |
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31 | Debug("datatype is DOUBLE\n"); |
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32 | return MPI_Gatherv_local_double(sendbuf, count, recvbuf, recvcounts, displs, comm); |
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33 | } |
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34 | else if(datatype == MPI_LONG) |
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35 | { |
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36 | Debug("datatype is LONG\n"); |
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37 | return MPI_Gatherv_local_long(sendbuf, count, recvbuf, recvcounts, displs, comm); |
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38 | } |
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39 | else if(datatype == MPI_UNSIGNED_LONG) |
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40 | { |
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41 | Debug("datatype is uLONG\n"); |
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42 | return MPI_Gatherv_local_ulong(sendbuf, count, recvbuf, recvcounts, displs, comm); |
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43 | } |
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44 | else if(datatype == MPI_CHAR) |
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45 | { |
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46 | Debug("datatype is CHAR\n"); |
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47 | return MPI_Gatherv_local_char(sendbuf, count, recvbuf, recvcounts, displs, comm); |
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48 | } |
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49 | else |
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50 | { |
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51 | printf("MPI_Gatherv Datatype not supported!\n"); |
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52 | exit(0); |
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53 | } |
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54 | } |
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55 | |
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56 | int MPI_Gatherv_local_int(const void *sendbuf, int count, void *recvbuf, const int recvcounts[], const int displs[], MPI_Comm comm) |
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57 | { |
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58 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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59 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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60 | |
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61 | int *buffer = comm.my_buffer->buf_int; |
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62 | int *send_buf = static_cast<int*>(const_cast<void*>(sendbuf)); |
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63 | int *recv_buf = static_cast<int*>(recvbuf); |
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64 | |
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65 | if(my_rank == 0) |
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66 | { |
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67 | assert(count == recvcounts[0]); |
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68 | copy(send_buf, send_buf+count, recv_buf + displs[0]); |
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69 | } |
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70 | |
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71 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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72 | { |
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73 | for(int k=1; k<num_ep; k++) |
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74 | { |
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75 | if(my_rank == k) |
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76 | { |
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77 | #pragma omp critical (write_to_buffer) |
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78 | { |
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79 | copy(send_buf+j, send_buf + min(BUFFER_SIZE, count-j) , buffer); |
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80 | #pragma omp flush |
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81 | } |
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82 | } |
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83 | |
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84 | MPI_Barrier_local(comm); |
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85 | |
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86 | if(my_rank == 0) |
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87 | { |
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88 | #pragma omp flush |
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89 | #pragma omp critical (read_from_buffer) |
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90 | { |
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91 | copy(buffer, buffer+min(BUFFER_SIZE, recvcounts[k]-j), recv_buf+j+displs[k]); |
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92 | } |
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93 | } |
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94 | |
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95 | MPI_Barrier_local(comm); |
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96 | } |
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97 | } |
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98 | } |
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99 | |
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100 | int MPI_Gatherv_local_float(const void *sendbuf, int count, void *recvbuf, const int recvcounts[], const int displs[], MPI_Comm comm) |
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101 | { |
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102 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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103 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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104 | |
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105 | float *buffer = comm.my_buffer->buf_float; |
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106 | float *send_buf = static_cast<float*>(const_cast<void*>(sendbuf)); |
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107 | float *recv_buf = static_cast<float*>(recvbuf); |
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108 | |
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109 | if(my_rank == 0) |
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110 | { |
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111 | assert(count == recvcounts[0]); |
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112 | copy(send_buf, send_buf+count, recv_buf + displs[0]); |
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113 | } |
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114 | |
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115 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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116 | { |
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117 | for(int k=1; k<num_ep; k++) |
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118 | { |
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119 | if(my_rank == k) |
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120 | { |
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121 | #pragma omp critical (write_to_buffer) |
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122 | { |
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123 | copy(send_buf+j, send_buf + min(BUFFER_SIZE, count-j) , buffer); |
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124 | #pragma omp flush |
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125 | } |
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126 | } |
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127 | |
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128 | MPI_Barrier_local(comm); |
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129 | |
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130 | if(my_rank == 0) |
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131 | { |
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132 | #pragma omp flush |
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133 | #pragma omp critical (read_from_buffer) |
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134 | { |
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135 | copy(buffer, buffer+min(BUFFER_SIZE, recvcounts[k]-j), recv_buf+j+displs[k]); |
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136 | } |
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137 | } |
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138 | |
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139 | MPI_Barrier_local(comm); |
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140 | } |
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141 | } |
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142 | } |
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143 | |
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144 | int MPI_Gatherv_local_double(const void *sendbuf, int count, void *recvbuf, const int recvcounts[], const int displs[], MPI_Comm comm) |
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145 | { |
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146 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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147 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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148 | |
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149 | double *buffer = comm.my_buffer->buf_double; |
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150 | double *send_buf = static_cast<double*>(const_cast<void*>(sendbuf)); |
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151 | double *recv_buf = static_cast<double*>(recvbuf); |
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152 | |
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153 | if(my_rank == 0) |
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154 | { |
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155 | assert(count == recvcounts[0]); |
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156 | copy(send_buf, send_buf+count, recv_buf + displs[0]); |
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157 | } |
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158 | |
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159 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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160 | { |
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161 | for(int k=1; k<num_ep; k++) |
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162 | { |
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163 | if(my_rank == k) |
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164 | { |
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165 | #pragma omp critical (write_to_buffer) |
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166 | { |
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167 | copy(send_buf+j, send_buf + min(BUFFER_SIZE, count-j) , buffer); |
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168 | #pragma omp flush |
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169 | } |
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170 | } |
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171 | |
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172 | MPI_Barrier_local(comm); |
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173 | |
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174 | if(my_rank == 0) |
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175 | { |
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176 | #pragma omp flush |
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177 | #pragma omp critical (read_from_buffer) |
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178 | { |
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179 | copy(buffer, buffer+min(BUFFER_SIZE, recvcounts[k]-j), recv_buf+j+displs[k]); |
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180 | } |
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181 | } |
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182 | |
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183 | MPI_Barrier_local(comm); |
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184 | } |
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185 | } |
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186 | } |
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187 | |
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188 | int MPI_Gatherv_local_long(const void *sendbuf, int count, void *recvbuf, const int recvcounts[], const int displs[], MPI_Comm comm) |
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189 | { |
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190 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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191 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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192 | |
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193 | long *buffer = comm.my_buffer->buf_long; |
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194 | long *send_buf = static_cast<long*>(const_cast<void*>(sendbuf)); |
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195 | long *recv_buf = static_cast<long*>(recvbuf); |
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196 | |
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197 | if(my_rank == 0) |
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198 | { |
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199 | assert(count == recvcounts[0]); |
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200 | copy(send_buf, send_buf+count, recv_buf + displs[0]); |
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201 | } |
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202 | |
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203 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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204 | { |
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205 | for(int k=1; k<num_ep; k++) |
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206 | { |
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207 | if(my_rank == k) |
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208 | { |
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209 | #pragma omp critical (write_to_buffer) |
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210 | { |
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211 | copy(send_buf+j, send_buf + min(BUFFER_SIZE, count-j) , buffer); |
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212 | #pragma omp flush |
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213 | } |
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214 | } |
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215 | |
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216 | MPI_Barrier_local(comm); |
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217 | |
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218 | if(my_rank == 0) |
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219 | { |
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220 | #pragma omp flush |
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221 | #pragma omp critical (read_from_buffer) |
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222 | { |
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223 | copy(buffer, buffer+min(BUFFER_SIZE, recvcounts[k]-j), recv_buf+j+displs[k]); |
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224 | } |
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225 | } |
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226 | |
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227 | MPI_Barrier_local(comm); |
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228 | } |
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229 | } |
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230 | } |
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231 | |
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232 | int MPI_Gatherv_local_ulong(const void *sendbuf, int count, void *recvbuf, const int recvcounts[], const int displs[], MPI_Comm comm) |
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233 | { |
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234 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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235 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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236 | |
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237 | unsigned long *buffer = comm.my_buffer->buf_ulong; |
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238 | unsigned long *send_buf = static_cast<unsigned long*>(const_cast<void*>(sendbuf)); |
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239 | unsigned long *recv_buf = static_cast<unsigned long*>(recvbuf); |
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240 | |
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241 | if(my_rank == 0) |
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242 | { |
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243 | assert(count == recvcounts[0]); |
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244 | copy(send_buf, send_buf+count, recv_buf + displs[0]); |
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245 | } |
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246 | |
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247 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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248 | { |
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249 | for(int k=1; k<num_ep; k++) |
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250 | { |
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251 | if(my_rank == k) |
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252 | { |
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253 | #pragma omp critical (write_to_buffer) |
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254 | { |
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255 | copy(send_buf+j, send_buf + min(BUFFER_SIZE, count-j) , buffer); |
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256 | #pragma omp flush |
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257 | } |
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258 | } |
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259 | |
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260 | MPI_Barrier_local(comm); |
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261 | |
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262 | if(my_rank == 0) |
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263 | { |
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264 | #pragma omp flush |
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265 | #pragma omp critical (read_from_buffer) |
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266 | { |
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267 | copy(buffer, buffer+min(BUFFER_SIZE, recvcounts[k]-j), recv_buf+j+displs[k]); |
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268 | } |
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269 | } |
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270 | |
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271 | MPI_Barrier_local(comm); |
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272 | } |
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273 | } |
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274 | } |
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275 | |
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276 | int MPI_Gatherv_local_char(const void *sendbuf, int count, void *recvbuf, const int recvcounts[], const int displs[], MPI_Comm comm) |
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277 | { |
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278 | int my_rank = comm.ep_comm_ptr->size_rank_info[1].first; |
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279 | int num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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280 | |
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281 | char *buffer = comm.my_buffer->buf_char; |
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282 | char *send_buf = static_cast<char*>(const_cast<void*>(sendbuf)); |
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283 | char *recv_buf = static_cast<char*>(recvbuf); |
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284 | |
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285 | if(my_rank == 0) |
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286 | { |
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287 | assert(count == recvcounts[0]); |
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288 | copy(send_buf, send_buf+count, recv_buf + displs[0]); |
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289 | } |
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290 | |
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291 | for(int j=0; j<count; j+=BUFFER_SIZE) |
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292 | { |
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293 | for(int k=1; k<num_ep; k++) |
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294 | { |
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295 | if(my_rank == k) |
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296 | { |
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297 | #pragma omp critical (write_to_buffer) |
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298 | { |
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299 | copy(send_buf+j, send_buf + min(BUFFER_SIZE, count-j) , buffer); |
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300 | #pragma omp flush |
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301 | } |
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302 | } |
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303 | |
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304 | MPI_Barrier_local(comm); |
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305 | |
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306 | if(my_rank == 0) |
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307 | { |
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308 | #pragma omp flush |
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309 | #pragma omp critical (read_from_buffer) |
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310 | { |
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311 | copy(buffer, buffer+min(BUFFER_SIZE, recvcounts[k]-j), recv_buf+j+displs[k]); |
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312 | } |
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313 | } |
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314 | |
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315 | MPI_Barrier_local(comm); |
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316 | } |
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317 | } |
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318 | } |
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319 | |
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320 | |
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321 | int MPI_Gatherv(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, const int recvcounts[], const int displs[], |
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322 | MPI_Datatype recvtype, int root, MPI_Comm comm) |
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323 | { |
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324 | |
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325 | if(!comm.is_ep && comm.mpi_comm) |
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326 | { |
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327 | ::MPI_Gatherv(const_cast<void*>(sendbuf), sendcount, static_cast< ::MPI_Datatype>(sendtype), recvbuf, const_cast<int*>(recvcounts), const_cast<int*>(displs), |
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328 | static_cast< ::MPI_Datatype>(recvtype), root, static_cast< ::MPI_Comm>(comm.mpi_comm)); |
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329 | return 0; |
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330 | } |
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331 | |
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332 | if(!comm.mpi_comm) return 0; |
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333 | |
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334 | assert(static_cast< ::MPI_Datatype>(sendtype) == static_cast< ::MPI_Datatype>(recvtype)); |
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335 | |
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336 | MPI_Datatype datatype = sendtype; |
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337 | int count = sendcount; |
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338 | |
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339 | int ep_rank, ep_rank_loc, mpi_rank; |
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340 | int ep_size, num_ep, mpi_size; |
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341 | |
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342 | ep_rank = comm.ep_comm_ptr->size_rank_info[0].first; |
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343 | ep_rank_loc = comm.ep_comm_ptr->size_rank_info[1].first; |
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344 | mpi_rank = comm.ep_comm_ptr->size_rank_info[2].first; |
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345 | ep_size = comm.ep_comm_ptr->size_rank_info[0].second; |
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346 | num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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347 | mpi_size = comm.ep_comm_ptr->size_rank_info[2].second; |
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348 | |
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349 | if(ep_rank != root) |
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350 | { |
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351 | recvcounts = new int[ep_size]; |
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352 | displs = new int[ep_size]; |
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353 | } |
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354 | |
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355 | MPI_Bcast(const_cast< int* >(recvcounts), ep_size, MPI_INT, root, comm); |
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356 | MPI_Bcast(const_cast< int* >(displs), ep_size, MPI_INT, root, comm); |
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357 | |
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358 | |
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359 | int root_mpi_rank = comm.rank_map->at(root).second; |
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360 | int root_ep_loc = comm.rank_map->at(root).first; |
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361 | |
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362 | |
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363 | ::MPI_Aint datasize, lb; |
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364 | |
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365 | ::MPI_Type_get_extent(static_cast< ::MPI_Datatype>(datatype), &lb, &datasize); |
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366 | |
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367 | void *local_gather_recvbuf; |
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368 | |
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369 | if(ep_rank_loc==0) |
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370 | { |
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371 | int buffer_size = accumulate(recvcounts+ep_rank, recvcounts+ep_rank+num_ep, 0); |
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372 | local_gather_recvbuf = new void*[datasize*buffer_size]; |
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373 | } |
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374 | |
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375 | // local gather to master |
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376 | int local_displs[num_ep]; |
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377 | local_displs[0] = 0; |
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378 | for(int i=1; i<num_ep; i++) |
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379 | { |
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380 | local_displs[i] = displs[ep_rank-ep_rank_loc+i]-displs[ep_rank-ep_rank_loc]; |
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381 | } |
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382 | MPI_Gatherv_local(sendbuf, count, datatype, local_gather_recvbuf, recvcounts+ep_rank-ep_rank_loc, local_displs, comm); |
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383 | |
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384 | //MPI_Gather |
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385 | if(ep_rank_loc == 0) |
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386 | { |
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387 | |
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388 | int gatherv_recvcnt[mpi_size]; |
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389 | int gatherv_displs[mpi_size]; |
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390 | int gatherv_cnt = accumulate(recvcounts+ep_rank, recvcounts+ep_rank+num_ep, 0); |
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391 | |
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392 | //gatherv_recvcnt = new int[mpi_size]; |
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393 | //gatherv_displs = new int[mpi_size]; |
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394 | |
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395 | |
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396 | ::MPI_Allgather(&gatherv_cnt, 1, MPI_INT_STD, gatherv_recvcnt, 1, MPI_INT_STD, static_cast< ::MPI_Comm>(comm.mpi_comm)); |
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397 | |
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398 | gatherv_displs[0] = 0; |
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399 | for(int i=1; i<mpi_size; i++) |
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400 | { |
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401 | gatherv_displs[i] = gatherv_recvcnt[i-1] + gatherv_displs[i-1]; |
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402 | } |
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403 | |
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404 | |
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405 | ::MPI_Gatherv(local_gather_recvbuf, gatherv_cnt, static_cast< ::MPI_Datatype>(datatype), recvbuf, gatherv_recvcnt, |
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406 | gatherv_displs, static_cast< ::MPI_Datatype>(datatype), root_mpi_rank, static_cast< ::MPI_Comm>(comm.mpi_comm)); |
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407 | |
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408 | //delete[] gatherv_recvcnt; |
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409 | //delete[] gatherv_displs; |
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410 | } |
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411 | |
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412 | |
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413 | if(root_ep_loc != 0 && mpi_rank == root_mpi_rank) // root is not master, master send to root and root receive from master |
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414 | { |
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415 | innode_memcpy(0, recvbuf, root_ep_loc, recvbuf, accumulate(recvcounts, recvcounts+ep_size, 0), datatype, comm); |
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416 | } |
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417 | |
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418 | |
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419 | |
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420 | if(ep_rank_loc==0) |
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421 | { |
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422 | if(datatype == MPI_INT) |
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423 | { |
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424 | delete[] static_cast<int*>(local_gather_recvbuf); |
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425 | } |
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426 | else if(datatype == MPI_FLOAT) |
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427 | { |
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428 | delete[] static_cast<float*>(local_gather_recvbuf); |
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429 | } |
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430 | else if(datatype == MPI_DOUBLE) |
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431 | { |
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432 | delete[] static_cast<double*>(local_gather_recvbuf); |
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433 | } |
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434 | else if(datatype == MPI_LONG) |
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435 | { |
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436 | delete[] static_cast<long*>(local_gather_recvbuf); |
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437 | } |
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438 | else if(datatype == MPI_UNSIGNED_LONG) |
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439 | { |
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440 | delete[] static_cast<unsigned long*>(local_gather_recvbuf); |
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441 | } |
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442 | else // if(datatype == MPI_CHAR) |
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443 | { |
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444 | delete[] static_cast<char*>(local_gather_recvbuf); |
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445 | } |
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446 | } |
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447 | else |
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448 | { |
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449 | delete[] recvcounts; |
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450 | delete[] displs; |
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451 | } |
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452 | return 0; |
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453 | } |
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454 | |
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455 | |
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456 | |
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457 | int MPI_Allgatherv(const void *sendbuf, int sendcount, MPI_Datatype sendtype, void *recvbuf, const int recvcounts[], const int displs[], |
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458 | MPI_Datatype recvtype, MPI_Comm comm) |
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459 | { |
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460 | |
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461 | if(!comm.is_ep && comm.mpi_comm) |
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462 | { |
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463 | ::MPI_Allgatherv(sendbuf, sendcount, static_cast< ::MPI_Datatype>(sendtype), recvbuf, recvcounts, displs, |
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464 | static_cast< ::MPI_Datatype>(recvtype), static_cast< ::MPI_Comm>(comm.mpi_comm)); |
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465 | return 0; |
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466 | } |
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467 | |
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468 | if(!comm.mpi_comm) return 0; |
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469 | |
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470 | assert(static_cast< ::MPI_Datatype>(sendtype) == static_cast< ::MPI_Datatype>(recvtype)); |
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471 | |
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472 | |
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473 | MPI_Datatype datatype = sendtype; |
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474 | int count = sendcount; |
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475 | |
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476 | int ep_rank, ep_rank_loc, mpi_rank; |
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477 | int ep_size, num_ep, mpi_size; |
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478 | |
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479 | ep_rank = comm.ep_comm_ptr->size_rank_info[0].first; |
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480 | ep_rank_loc = comm.ep_comm_ptr->size_rank_info[1].first; |
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481 | mpi_rank = comm.ep_comm_ptr->size_rank_info[2].first; |
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482 | ep_size = comm.ep_comm_ptr->size_rank_info[0].second; |
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483 | num_ep = comm.ep_comm_ptr->size_rank_info[1].second; |
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484 | mpi_size = comm.ep_comm_ptr->size_rank_info[2].second; |
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485 | |
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486 | |
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487 | assert(accumulate(recvcounts, recvcounts+ep_size-1, 0) == displs[ep_size-1]); // Only for continuous gather. |
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488 | |
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489 | |
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490 | ::MPI_Aint datasize, lb; |
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491 | |
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492 | ::MPI_Type_get_extent(static_cast< ::MPI_Datatype>(datatype), &lb, &datasize); |
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493 | |
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494 | void *local_gather_recvbuf; |
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495 | |
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496 | if(ep_rank_loc==0) |
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497 | { |
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498 | int buffer_size = accumulate(recvcounts+ep_rank, recvcounts+ep_rank+num_ep, 0); |
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499 | local_gather_recvbuf = new void*[datasize*buffer_size]; |
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500 | } |
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501 | |
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502 | // local gather to master |
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503 | int local_displs[num_ep]; |
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504 | local_displs[0] = 0; |
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505 | for(int i=1; i<num_ep; i++) |
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506 | { |
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507 | local_displs[i] = displs[ep_rank-ep_rank_loc+i]-displs[ep_rank-ep_rank_loc]; |
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508 | } |
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509 | MPI_Gatherv_local(sendbuf, count, datatype, local_gather_recvbuf, recvcounts+ep_rank-ep_rank_loc, local_displs, comm); |
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510 | |
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511 | //MPI_Gather |
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512 | if(ep_rank_loc == 0) |
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513 | { |
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514 | int *gatherv_recvcnt; |
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515 | int *gatherv_displs; |
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516 | int gatherv_cnt = accumulate(recvcounts+ep_rank, recvcounts+ep_rank+num_ep, 0); |
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517 | |
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518 | gatherv_recvcnt = new int[mpi_size]; |
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519 | gatherv_displs = new int[mpi_size]; |
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520 | |
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521 | ::MPI_Allgather(&gatherv_cnt, 1, MPI_INT_STD, gatherv_recvcnt, 1, MPI_INT_STD, static_cast< ::MPI_Comm>(comm.mpi_comm)); |
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522 | gatherv_displs[0] = displs[0]; |
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523 | for(int i=1; i<mpi_size; i++) |
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524 | { |
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525 | gatherv_displs[i] = gatherv_recvcnt[i-1] + gatherv_displs[i-1]; |
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526 | } |
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527 | |
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528 | ::MPI_Allgatherv(local_gather_recvbuf, gatherv_cnt, static_cast< ::MPI_Datatype>(datatype), recvbuf, gatherv_recvcnt, |
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529 | gatherv_displs, static_cast< ::MPI_Datatype>(datatype), static_cast< ::MPI_Comm>(comm.mpi_comm)); |
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530 | |
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531 | delete[] gatherv_recvcnt; |
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532 | delete[] gatherv_displs; |
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533 | } |
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534 | |
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535 | MPI_Bcast_local(recvbuf, accumulate(recvcounts, recvcounts+ep_size, 0), datatype, comm); |
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536 | |
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537 | if(ep_rank_loc==0) |
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538 | { |
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539 | if(datatype == MPI_INT) |
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540 | { |
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541 | delete[] static_cast<int*>(local_gather_recvbuf); |
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542 | } |
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543 | else if(datatype == MPI_FLOAT) |
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544 | { |
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545 | delete[] static_cast<float*>(local_gather_recvbuf); |
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546 | } |
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547 | else if(datatype == MPI_DOUBLE) |
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548 | { |
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549 | delete[] static_cast<double*>(local_gather_recvbuf); |
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550 | } |
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551 | else if(datatype == MPI_LONG) |
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552 | { |
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553 | delete[] static_cast<long*>(local_gather_recvbuf); |
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554 | } |
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555 | else if(datatype == MPI_UNSIGNED_LONG) |
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556 | { |
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557 | delete[] static_cast<unsigned long*>(local_gather_recvbuf); |
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558 | } |
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559 | else // if(datatype == MPI_CHAR) |
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560 | { |
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561 | delete[] static_cast<char*>(local_gather_recvbuf); |
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562 | } |
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563 | } |
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564 | } |
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565 | |
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566 | |
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567 | } |
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