1 | #include "servers_ressource.hpp" |
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2 | #include "window_manager.hpp" |
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3 | #include "ressources_manager.hpp" |
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4 | #include "pool_ressource.hpp" |
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5 | #include "event_scheduler.hpp" |
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6 | #include "cxios.hpp" |
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7 | #include "mpi.hpp" |
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8 | #include "timer.hpp" |
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9 | #include <vector> |
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10 | #include <string> |
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11 | #include "thread_manager.hpp" |
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12 | |
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13 | |
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14 | |
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15 | |
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16 | |
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17 | namespace xios |
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18 | { |
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19 | using namespace std ; |
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20 | |
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21 | CServersRessource::CServersRessource(MPI_Comm serverComm) : poolRessource_(nullptr), finalizeSignal_(false) |
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22 | { |
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23 | |
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24 | MPI_Comm_dup(serverComm, &serverComm_) ; |
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25 | MPI_Comm xiosComm=CXios::getXiosComm() ; |
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26 | |
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27 | int localRank, globalRank ; |
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28 | MPI_Comm_rank(xiosComm,&globalRank) ; |
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29 | MPI_Comm_rank(serverComm_,&localRank) ; |
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30 | |
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31 | winNotify_ = new CWindowManager(serverComm_, maxBufferSize_) ; |
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32 | MPI_Barrier(serverComm_) ; |
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33 | if (localRank==localLeader_) |
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34 | { |
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35 | int commSize ; |
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36 | MPI_Comm_size(serverComm_,&commSize) ; |
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37 | CXios::getRessourcesManager()->registerServerLeader(globalRank) ; |
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38 | CXios::getRessourcesManager()->registerRessourcesSize(commSize) ; |
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39 | freeRessourcesRank_.resize(commSize) ; |
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40 | for(int i=0;i<commSize;i++) freeRessourcesRank_[i]=i ; |
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41 | } |
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42 | |
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43 | MPI_Comm_dup(serverComm_, &freeRessourcesComm_) ; |
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44 | eventScheduler_ = make_shared<CEventScheduler>(freeRessourcesComm_) ; |
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45 | freeRessourceEventScheduler_ = eventScheduler_ ; |
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46 | if (CThreadManager::isUsingThreads()) CThreadManager::spawnThread(&CServersRessource::threadEventLoop, this) ; |
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47 | } |
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48 | |
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49 | void CServersRessource::createPool(const string& poolId, const int size) |
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50 | { |
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51 | int commSize ; |
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52 | MPI_Comm_size(serverComm_,&commSize) ; |
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53 | vector<int> newFreeRessourcesRank(freeRessourcesRank_.size()-size) ; |
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54 | |
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55 | bool isPartOf ; |
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56 | |
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57 | for(int i=0, j=0; i<freeRessourcesRank_.size();i++) |
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58 | { |
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59 | if (i<size) isPartOf=true ; |
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60 | else |
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61 | { |
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62 | isPartOf=false ; |
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63 | newFreeRessourcesRank[j]=freeRessourcesRank_[i] ; |
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64 | j++ ; |
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65 | } |
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66 | |
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67 | notifyOutType_=NOTIFY_CREATE_POOL ; |
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68 | notifyOutCreatePool_ = make_tuple(poolId, isPartOf) ; |
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69 | sendNotification(freeRessourcesRank_[i]) ; |
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70 | } |
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71 | freeRessourcesRank_ = std::move(newFreeRessourcesRank) ; |
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72 | } |
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73 | |
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74 | void CServersRessource::finalize(void) |
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75 | { |
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76 | int commSize ; |
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77 | MPI_Comm_size(serverComm_,&commSize) ; |
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78 | |
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79 | for(int rank=0; rank<commSize;rank++) |
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80 | { |
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81 | notifyOutType_=NOTIFY_FINALIZE ; |
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82 | sendNotification(rank) ; |
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83 | } |
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84 | } |
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85 | |
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86 | void CServersRessource::sendNotification(int rank) |
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87 | { |
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88 | winNotify_->pushToExclusiveWindow(rank, this, &CServersRessource::notificationsDumpOut) ; |
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89 | } |
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90 | |
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91 | |
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92 | void CServersRessource::notificationsDumpOut(CBufferOut& buffer) |
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93 | { |
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94 | |
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95 | buffer.realloc(maxBufferSize_) ; |
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96 | |
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97 | if (notifyOutType_==NOTIFY_CREATE_POOL) |
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98 | { |
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99 | auto& arg=notifyOutCreatePool_ ; |
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100 | buffer << notifyOutType_ << std::get<0>(arg) << std::get<1>(arg) ; |
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101 | } |
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102 | else if (notifyOutType_==NOTIFY_FINALIZE) buffer << notifyOutType_ ; |
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103 | } |
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104 | |
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105 | void CServersRessource::notificationsDumpIn(CBufferIn& buffer) |
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106 | { |
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107 | if (buffer.bufferSize() == 0) notifyInType_= NOTIFY_NOTHING ; |
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108 | else |
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109 | { |
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110 | buffer>>notifyInType_; |
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111 | if (notifyInType_==NOTIFY_CREATE_POOL) |
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112 | { |
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113 | auto& arg=notifyInCreatePool_ ; |
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114 | buffer >> std::get<0>(arg) >> std::get<1>(arg) ; |
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115 | } |
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116 | else if (notifyInType_==NOTIFY_FINALIZE) { /*nothing to do*/} |
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117 | } |
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118 | } |
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119 | |
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120 | bool CServersRessource::eventLoop(bool serviceOnly) |
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121 | { |
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122 | CTimer::get("CServersRessource::eventLoop").resume(); |
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123 | double time=MPI_Wtime() ; |
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124 | int flag ; |
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125 | MPI_Iprobe(MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &flag, MPI_STATUS_IGNORE); |
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126 | |
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127 | if (time-lastEventLoop_ > eventLoopLatency_) |
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128 | { |
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129 | checkNotifications() ; |
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130 | lastEventLoop_=time ; |
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131 | } |
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132 | |
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133 | if (poolRessource_!=nullptr) |
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134 | { |
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135 | poolRessource_->eventLoop(serviceOnly) ; |
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136 | if (poolRessource_->isFinished()) |
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137 | { |
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138 | delete poolRessource_ ; |
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139 | poolRessource_=nullptr ; |
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140 | // don't forget to free pool ressource later |
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141 | } |
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142 | } |
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143 | CTimer::get("CServersRessource::eventLoop").suspend(); |
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144 | if (poolRessource_==nullptr && finalizeSignal_) finished_=true ; |
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145 | return finished_ ; |
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146 | } |
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147 | |
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148 | void CServersRessource::threadEventLoop(void) |
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149 | { |
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150 | CTimer::get("CServersRessource::eventLoop").resume(); |
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151 | info(100)<<"Launch Thread for CServersRessource::threadEventLoop"<<endl ; |
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152 | CThreadManager::threadInitialize() ; |
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153 | |
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154 | do |
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155 | { |
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156 | double time=MPI_Wtime() ; |
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157 | int flag ; |
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158 | MPI_Iprobe(MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &flag, MPI_STATUS_IGNORE); |
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159 | |
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160 | if (time-lastEventLoop_ > eventLoopLatency_) |
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161 | { |
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162 | checkNotifications() ; |
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163 | lastEventLoop_=time ; |
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164 | } |
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165 | |
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166 | if (poolRessource_!=nullptr) |
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167 | { |
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168 | if (poolRessource_->isFinished()) |
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169 | { |
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170 | delete poolRessource_ ; |
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171 | poolRessource_=nullptr ; |
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172 | // don't forget to free pool ressource later |
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173 | } |
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174 | } |
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175 | CTimer::get("CServersRessource::eventLoop").suspend(); |
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176 | if (poolRessource_==nullptr && finalizeSignal_) finished_=true ; |
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177 | if (!finished_) CThreadManager::yield() ; |
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178 | |
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179 | } while (!finished_) ; |
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180 | |
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181 | CThreadManager::threadFinalize() ; |
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182 | info(100)<<"Close thread for CServersRessource::threadEventLoop"<<endl ; ; |
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183 | } |
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184 | |
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185 | |
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186 | void CServersRessource::checkNotifications(void) |
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187 | { |
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188 | int commRank ; |
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189 | MPI_Comm_rank(serverComm_, &commRank) ; |
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190 | winNotify_->popFromExclusiveWindow(commRank, this, &CServersRessource::notificationsDumpIn) ; |
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191 | if (notifyInType_==NOTIFY_CREATE_POOL) |
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192 | { |
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193 | if (CThreadManager::isUsingThreads()) synchronize() ; |
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194 | createPool() ; |
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195 | } |
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196 | else if (notifyInType_==NOTIFY_FINALIZE) finalizeSignal() ; |
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197 | } |
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198 | |
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199 | void CServersRessource::synchronize(void) |
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200 | { |
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201 | bool out=false ; |
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202 | size_t timeLine=0 ; |
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203 | std::hash<string> hashString ; |
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204 | int commSize ; |
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205 | MPI_Comm_size(freeRessourcesComm_,&commSize) ; |
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206 | size_t hashId = hashString("CServersRessource::"+to_string(commSize)) ; |
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207 | freeRessourceEventScheduler_->registerEvent(timeLine, hashId) ; |
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208 | while (!out) |
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209 | { |
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210 | CThreadManager::yield() ; |
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211 | out = eventScheduler_->queryEvent(timeLine,hashId) ; |
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212 | if (out) eventScheduler_->popEvent() ; |
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213 | } |
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214 | } |
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215 | |
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216 | void CServersRessource::createPool(void) |
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217 | { |
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218 | auto& arg=notifyInCreatePool_ ; |
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219 | string poolId=get<0>(arg) ; |
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220 | bool isPartOf=get<1>(arg) ; |
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221 | |
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222 | int commRank ; |
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223 | MPI_Comm poolComm ; |
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224 | MPI_Comm_rank(freeRessourcesComm_,&commRank) ; |
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225 | MPI_Comm_split(freeRessourcesComm_, isPartOf, commRank, &poolComm) ; |
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226 | |
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227 | shared_ptr<CEventScheduler> parentScheduler, childScheduler ; |
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228 | freeRessourceEventScheduler_->splitScheduler(poolComm, parentScheduler, childScheduler) ; |
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229 | |
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230 | if (isFirstSplit_) eventScheduler_ = parentScheduler ; |
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231 | isFirstSplit_ = false ; |
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232 | |
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233 | if (isPartOf) |
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234 | { |
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235 | poolRessource_ = new CPoolRessource(poolComm, childScheduler, poolId, true) ; |
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236 | MPI_Comm_free(&poolComm) ; |
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237 | } |
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238 | else |
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239 | { |
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240 | freeRessourceEventScheduler_ = childScheduler ; |
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241 | MPI_Comm_free(&freeRessourcesComm_) ; |
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242 | freeRessourcesComm_=poolComm ; |
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243 | } |
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244 | |
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245 | } |
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246 | |
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247 | void CServersRessource::finalizeSignal(void) |
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248 | { |
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249 | finalizeSignal_=true ; |
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250 | if (poolRessource_!=nullptr) poolRessource_->finalizeSignal() ; |
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251 | } |
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252 | |
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253 | bool CServersRessource::isServerLeader(void) |
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254 | { |
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255 | int commRank ; |
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256 | MPI_Comm_rank(serverComm_,&commRank) ; |
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257 | if (commRank==localLeader_) return true ; |
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258 | else return false ; |
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259 | } |
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260 | |
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261 | CServersRessource::~CServersRessource() |
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262 | { |
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263 | delete winNotify_ ; |
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264 | } |
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265 | } |
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