1 | #include "xios_spl.hpp" |
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2 | #include "legacy_context_client.hpp" |
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3 | #include "context_server.hpp" |
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4 | #include "event_client.hpp" |
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5 | #include "buffer_out.hpp" |
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6 | #include "buffer_client.hpp" |
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7 | #include "type.hpp" |
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8 | #include "event_client.hpp" |
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9 | #include "context.hpp" |
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10 | #include "mpi.hpp" |
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11 | #include "timer.hpp" |
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12 | #include "cxios.hpp" |
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13 | #include "server.hpp" |
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14 | #include "services.hpp" |
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15 | #include "ressources_manager.hpp" |
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16 | #include <boost/functional/hash.hpp> |
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17 | #include <random> |
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18 | #include <chrono> |
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19 | |
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20 | namespace xios |
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21 | { |
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22 | extern CLogType logTimers ; |
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23 | |
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24 | /*! |
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25 | \param [in] parent Pointer to context on client side |
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26 | \param [in] intraComm_ communicator of group client |
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27 | \param [in] interComm_ communicator of group server |
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28 | \cxtSer [in] cxtSer Pointer to context of server side. (It is only used in case of attached mode --> obsolete). |
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29 | */ |
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30 | CLegacyContextClient::CLegacyContextClient(CContext* parent, MPI_Comm intraComm_, MPI_Comm interComm_, CContext* cxtSer) |
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31 | : CContextClient(parent, intraComm_, interComm_, cxtSer), |
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32 | mapBufferSize_(), maxBufferedEvents(4) |
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33 | { |
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34 | pureOneSided=CXios::getin<bool>("pure_one_sided",false); // pure one sided communication (for test) |
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35 | xios::MPI_Intercomm_merge(interComm_,false, &interCommMerged_) ; |
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36 | CXios::getMpiGarbageCollector().registerCommunicator(interCommMerged_) ; |
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37 | xios::MPI_Comm_split(intraComm_,clientRank,clientRank, &commSelf_) ; // for windows |
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38 | CXios::getMpiGarbageCollector().registerCommunicator(commSelf_) ; |
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39 | eventScheduler_ = parent->getEventScheduler() ; |
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40 | timeLine = 1; |
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41 | } |
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42 | |
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43 | CContextClient::ETransport getType(void) {return CContextClient::legacy ;} |
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44 | |
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45 | /*! |
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46 | \param [in] event Event sent to server |
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47 | */ |
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48 | void CLegacyContextClient::sendEvent(CEventClient& event) |
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49 | { |
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50 | list<int> ranks = event.getRanks(); |
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51 | |
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52 | // ostringstream str ; |
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53 | // for(auto& rank : ranks) str<<rank<<" ; " ; |
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54 | // info(100)<<"Event "<<timeLine<<" of context "<<context_->getId()<<" for ranks : "<<str.str()<<endl ; |
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55 | |
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56 | if (CXios::checkEventSync) |
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57 | { |
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58 | int typeId, classId, typeId_in, classId_in; |
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59 | long long timeLine_out; |
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60 | long long timeLine_in( timeLine ); |
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61 | typeId_in=event.getTypeId() ; |
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62 | classId_in=event.getClassId() ; |
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63 | // MPI_Allreduce(&timeLine,&timeLine_out, 1, MPI_UINT64_T, MPI_SUM, intraComm) ; // MPI_UINT64_T standardized by MPI 3 |
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64 | MPI_Allreduce(&timeLine_in,&timeLine_out, 1, MPI_LONG_LONG_INT, MPI_SUM, intraComm) ; |
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65 | MPI_Allreduce(&typeId_in,&typeId, 1, MPI_INT, MPI_SUM, intraComm) ; |
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66 | MPI_Allreduce(&classId_in,&classId, 1, MPI_INT, MPI_SUM, intraComm) ; |
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67 | if (typeId/clientSize!=event.getTypeId() || classId/clientSize!=event.getClassId() || timeLine_out/clientSize!=timeLine) |
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68 | { |
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69 | ERROR("void CLegacyContextClient::sendEvent(CEventClient& event)", |
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70 | << "Event are not coherent between client for timeline = "<<timeLine); |
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71 | } |
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72 | |
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73 | vector<int> servers(serverSize,0) ; |
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74 | auto ranks=event.getRanks() ; |
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75 | for(auto& rank : ranks) servers[rank]=1 ; |
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76 | MPI_Allreduce(MPI_IN_PLACE, servers.data(), serverSize,MPI_INT,MPI_SUM,intraComm) ; |
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77 | ostringstream osstr ; |
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78 | for(int i=0;i<serverSize;i++) if (servers[i]==0) osstr<<i<<" , " ; |
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79 | if (!osstr.str().empty()) |
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80 | { |
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81 | ERROR("void CLegacyContextClient::sendEvent(CEventClient& event)", |
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82 | <<" Some servers will not receive the message for timeline = "<<timeLine<<endl |
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83 | <<"Servers are : "<<osstr.str()) ; |
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84 | } |
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85 | |
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86 | |
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87 | } |
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88 | |
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89 | if (!event.isEmpty()) |
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90 | { |
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91 | list<int> sizes = event.getSizes(); |
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92 | |
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93 | // We force the getBuffers call to be non-blocking on classical servers |
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94 | list<CBufferOut*> buffList; |
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95 | getBuffers(timeLine, ranks, sizes, buffList) ; |
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96 | |
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97 | event.send(timeLine, sizes, buffList); |
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98 | |
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99 | //for (auto itRank = ranks.begin(); itRank != ranks.end(); itRank++) buffers[*itRank]->infoBuffer() ; |
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100 | |
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101 | unlockBuffers(ranks) ; |
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102 | checkBuffers(ranks); |
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103 | |
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104 | } |
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105 | |
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106 | synchronize() ; |
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107 | timeLine++; |
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108 | } |
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109 | |
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110 | |
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111 | /*! |
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112 | * Get buffers for each connection to the servers. This function blocks until there is enough room in the buffers unless |
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113 | * it is explicitly requested to be non-blocking. |
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114 | * |
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115 | * |
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116 | * \param [in] timeLine time line of the event which will be sent to servers |
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117 | * \param [in] serverList list of rank of connected server |
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118 | * \param [in] sizeList size of message corresponding to each connection |
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119 | * \param [out] retBuffers list of buffers that can be used to store an event |
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120 | * \param [in] nonBlocking whether this function should be non-blocking |
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121 | * \return whether the already allocated buffers could be used |
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122 | */ |
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123 | void CLegacyContextClient::getBuffers(const size_t timeLine, const list<int>& serverList, const list<int>& sizeList, list<CBufferOut*>& retBuffers) |
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124 | { |
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125 | list<int>::const_iterator itServer, itSize; |
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126 | list<CClientBuffer*> bufferList; |
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127 | map<int,CClientBuffer*>::const_iterator it; |
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128 | list<CClientBuffer*>::iterator itBuffer; |
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129 | bool areBuffersFree; |
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130 | /* |
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131 | for (itServer = serverList.begin(); itServer != serverList.end(); itServer++) |
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132 | { |
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133 | it = buffers.find(*itServer); |
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134 | if (it == buffers.end()) |
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135 | { |
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136 | CTokenManager* tokenManager = CXios::getRessourcesManager()->getTokenManager() ; |
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137 | size_t token = tokenManager->getToken() ; |
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138 | while (!tokenManager->checkToken(token)) callGlobalEventLoop() ; |
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139 | newBuffer(*itServer); |
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140 | it = buffers.find(*itServer); |
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141 | checkAttachWindows(it->second,it->first) ; |
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142 | tokenManager->updateToken(token) ; |
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143 | } |
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144 | bufferList.push_back(it->second); |
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145 | } |
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146 | */ |
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147 | map<int,MPI_Request> attachList ; |
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148 | |
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149 | for (itServer = serverList.begin(); itServer != serverList.end(); itServer++) |
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150 | { |
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151 | it = buffers.find(*itServer); |
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152 | if (it == buffers.end()) |
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153 | { |
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154 | newBuffer(*itServer); |
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155 | it = buffers.find(*itServer); |
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156 | checkAttachWindows(it->second, it->first, attachList) ; |
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157 | } |
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158 | bufferList.push_back(it->second); |
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159 | } |
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160 | |
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161 | while(!attachList.empty()) |
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162 | { |
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163 | auto it = attachList.begin() ; |
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164 | while(it!=attachList.end()) |
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165 | { |
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166 | if (checkAttachWindows(buffers[it->first], it->first, attachList)) it=attachList.erase(it) ; |
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167 | else ++it ; |
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168 | } |
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169 | |
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170 | yield() ; |
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171 | } |
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172 | |
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173 | |
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174 | double lastTimeBuffersNotFree=0. ; |
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175 | double time ; |
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176 | bool doUnlockBuffers ; |
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177 | CTimer::get("Blocking time").resume(); |
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178 | do |
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179 | { |
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180 | areBuffersFree = true; |
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181 | doUnlockBuffers=false ; |
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182 | time=MPI_Wtime() ; |
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183 | if (time-lastTimeBuffersNotFree > latency_) |
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184 | { |
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185 | for (itBuffer = bufferList.begin(), itSize = sizeList.begin(); itBuffer != bufferList.end(); itBuffer++, itSize++) |
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186 | { |
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187 | areBuffersFree &= (*itBuffer)->isBufferFree(*itSize); |
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188 | } |
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189 | if (!areBuffersFree) |
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190 | { |
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191 | lastTimeBuffersNotFree = time ; |
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192 | doUnlockBuffers=true ; |
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193 | } |
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194 | } |
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195 | else areBuffersFree = false ; |
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196 | |
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197 | if (!areBuffersFree) |
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198 | { |
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199 | if (doUnlockBuffers) for (itBuffer = bufferList.begin(); itBuffer != bufferList.end(); itBuffer++) (*itBuffer)->unlockBuffer(); |
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200 | checkBuffers(); |
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201 | |
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202 | yield() ; |
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203 | } |
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204 | |
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205 | } while (!areBuffersFree); |
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206 | CTimer::get("Blocking time").suspend(); |
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207 | |
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208 | for (itBuffer = bufferList.begin(), itSize = sizeList.begin(); itBuffer != bufferList.end(); itBuffer++, itSize++) |
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209 | retBuffers.push_back((*itBuffer)->getBuffer(timeLine, *itSize)); |
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210 | } |
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211 | |
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212 | |
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213 | bool CLegacyContextClient::checkAttachWindows(CClientBuffer* buffer, int rank, map<int, MPI_Request>& attachList) |
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214 | { |
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215 | int dummy; |
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216 | bool ret=true; |
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217 | |
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218 | if (!buffer->isAttachedWindows()) |
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219 | { |
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220 | // create windows dynamically for one-sided |
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221 | /* |
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222 | if (info.isActive(logTimers)) CTimer::get("create Windows").resume() ; |
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223 | MPI_Comm interComm ; |
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224 | int tag = 0 ; |
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225 | xios::MPI_Intercomm_create(commSelf_, 0, interCommMerged_, clientSize+rank, tag, &interComm) ; |
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226 | xios::MPI_Intercomm_merge(interComm, false, &winComm_[rank]) ; |
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227 | xios::MPI_Comm_free(&interComm) ; |
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228 | |
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229 | buffer->attachWindows(winComm_[rank]) ; |
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230 | CXios::getMpiGarbageCollector().registerCommunicator(winComm_[rank]) ; |
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231 | MPI_Barrier(winComm_[rank]) ; |
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232 | */ |
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233 | if (attachList.count(rank)==0) |
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234 | { |
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235 | MPI_Irecv(&dummy,0,MPI_INT,clientSize+rank, 21, interCommMerged_, &attachList[rank]) ; |
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236 | ret = false ; |
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237 | } |
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238 | else |
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239 | { |
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240 | MPI_Status status ; |
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241 | int flag ; |
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242 | MPI_Test(&attachList[rank],&flag, &status) ; |
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243 | if (flag) |
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244 | { |
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245 | if (info.isActive(logTimers)) CTimer::get("create Windows").resume() ; |
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246 | MPI_Comm interComm ; |
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247 | int tag = 0 ; |
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248 | xios::MPI_Intercomm_create(commSelf_, 0, interCommMerged_, clientSize+rank, tag, &interComm) ; |
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249 | xios::MPI_Intercomm_merge(interComm, false, &winComm_[rank]) ; |
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250 | xios::MPI_Comm_free(&interComm) ; |
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251 | |
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252 | buffer->attachWindows(winComm_[rank]) ; |
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253 | CXios::getMpiGarbageCollector().registerCommunicator(winComm_[rank]) ; |
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254 | MPI_Barrier(winComm_[rank]) ; |
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255 | ret = true ; |
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256 | } |
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257 | else ret=false ; |
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258 | } |
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259 | } |
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260 | return ret ; |
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261 | } |
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262 | |
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263 | |
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264 | void CLegacyContextClient::eventLoop(void) |
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265 | { |
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266 | if (!locked_) checkBuffers() ; |
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267 | } |
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268 | |
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269 | void CLegacyContextClient::callGlobalEventLoop(void) |
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270 | { |
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271 | locked_=true ; |
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272 | context_->yield() ; |
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273 | locked_=false ; |
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274 | } |
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275 | |
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276 | void CLegacyContextClient::yield(void) |
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277 | { |
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278 | locked_=true ; |
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279 | context_->yield() ; |
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280 | locked_=false ; |
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281 | } |
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282 | |
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283 | void CLegacyContextClient::synchronize(void) |
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284 | { |
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285 | if (context_->getServiceType()!=CServicesManager::CLIENT) |
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286 | { |
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287 | locked_=true ; |
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288 | context_->synchronize() ; |
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289 | locked_=false ; |
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290 | } |
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291 | } |
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292 | /*! |
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293 | Make a new buffer for a certain connection to server with specific rank |
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294 | \param [in] rank rank of connected server |
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295 | */ |
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296 | void CLegacyContextClient::newBuffer(int rank) |
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297 | { |
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298 | if (!mapBufferSize_.count(rank)) |
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299 | { |
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300 | error(0) << "WARNING: Unexpected request for buffer to communicate with server " << rank << std::endl; |
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301 | mapBufferSize_[rank] = CXios::minBufferSize; |
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302 | maxEventSizes[rank] = CXios::minBufferSize; |
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303 | } |
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304 | bool hasWindows = true ; |
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305 | CClientBuffer* buffer = buffers[rank] = new CClientBuffer(interCommMerged_, clientSize+rank, mapBufferSize_[rank], hasWindows); |
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306 | if (isGrowableBuffer_) buffer->setGrowableBuffer(1.2) ; |
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307 | else buffer->fixBuffer() ; |
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308 | // Notify the server |
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309 | |
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310 | CBufferOut* bufOut = buffer->getBuffer(0, 4*sizeof(MPI_Aint)); |
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311 | MPI_Aint sendBuff[4] ; |
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312 | sendBuff[0]=hashId_; |
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313 | sendBuff[1]=mapBufferSize_[rank]; |
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314 | sendBuff[2]=buffers[rank]->getWinBufferAddress(0); |
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315 | sendBuff[3]=buffers[rank]->getWinBufferAddress(1); |
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316 | info(100)<<"CLegacyContextClient::newBuffer : rank "<<rank<<" winAdress[0] "<<buffers[rank]->getWinBufferAddress(0)<<" winAdress[1] "<<buffers[rank]->getWinBufferAddress(1)<<endl; |
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317 | bufOut->put(sendBuff,4); |
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318 | buffer->checkBuffer(true); |
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319 | |
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320 | } |
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321 | |
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322 | |
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323 | |
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324 | /*! |
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325 | Verify state of buffers. Buffer is under pending state if there is no message on it |
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326 | \return state of buffers, pending(true), ready(false) |
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327 | */ |
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328 | bool CLegacyContextClient::checkBuffers(void) |
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329 | { |
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330 | map<int,CClientBuffer*>::iterator itBuff; |
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331 | bool pending = false; |
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332 | for (itBuff = buffers.begin(); itBuff != buffers.end(); itBuff++) |
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333 | pending |= itBuff->second->checkBuffer(!pureOneSided); |
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334 | return pending; |
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335 | } |
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336 | |
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337 | //! Release all buffers |
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338 | void CLegacyContextClient::releaseBuffers() |
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339 | { |
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340 | map<int,CClientBuffer*>::iterator itBuff; |
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341 | for (itBuff = buffers.begin(); itBuff != buffers.end(); itBuff++) |
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342 | { |
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343 | delete itBuff->second; |
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344 | } |
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345 | buffers.clear(); |
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346 | |
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347 | for(auto& it : winComm_) |
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348 | { |
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349 | int rank = it.first ; |
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350 | } |
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351 | } |
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352 | |
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353 | |
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354 | /*! |
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355 | Lock the buffers for one sided communications |
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356 | \param [in] ranks list rank of server to which client connects to |
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357 | */ |
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358 | void CLegacyContextClient::lockBuffers(list<int>& ranks) |
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359 | { |
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360 | list<int>::iterator it; |
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361 | for (it = ranks.begin(); it != ranks.end(); it++) buffers[*it]->lockBuffer(); |
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362 | } |
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363 | |
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364 | /*! |
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365 | Unlock the buffers for one sided communications |
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366 | \param [in] ranks list rank of server to which client connects to |
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367 | */ |
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368 | void CLegacyContextClient::unlockBuffers(list<int>& ranks) |
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369 | { |
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370 | list<int>::iterator it; |
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371 | for (it = ranks.begin(); it != ranks.end(); it++) buffers[*it]->unlockBuffer(); |
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372 | } |
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373 | |
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374 | /*! |
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375 | Verify state of buffers corresponding to a connection |
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376 | \param [in] ranks list rank of server to which client connects to |
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377 | \return state of buffers, pending(true), ready(false) |
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378 | */ |
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379 | bool CLegacyContextClient::checkBuffers(list<int>& ranks) |
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380 | { |
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381 | list<int>::iterator it; |
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382 | bool pending = false; |
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383 | for (it = ranks.begin(); it != ranks.end(); it++) pending |= buffers[*it]->checkBuffer(!pureOneSided); |
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384 | return pending; |
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385 | } |
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386 | |
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387 | /*! |
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388 | * Set the buffer size for each connection. Warning: This function is collective. |
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389 | * |
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390 | * \param [in] mapSize maps the rank of the connected servers to the size of the correspoinding buffer |
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391 | * \param [in] maxEventSize maps the rank of the connected servers to the size of the biggest event |
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392 | */ |
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393 | void CLegacyContextClient::setBufferSize(const std::map<int,StdSize>& mapSize) |
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394 | { |
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395 | setFixedBuffer() ; |
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396 | for(auto& it : mapSize) |
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397 | { |
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398 | size_t size=std::max(CXios::minBufferSize*1.0,std::min(it.second*CXios::bufferSizeFactor*1.01,CXios::maxBufferSize*1.0)) ; |
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399 | mapBufferSize_[it.first]=size ; |
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400 | if (buffers.count(it.first)>0) buffers[it.first]->fixBufferSize(size); |
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401 | } |
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402 | } |
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403 | |
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404 | /*! |
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405 | * Finalize context client and do some reports. Function is non-blocking. |
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406 | */ |
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407 | void CLegacyContextClient::finalize(void) |
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408 | { |
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409 | map<int,CClientBuffer*>::iterator itBuff; |
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410 | std::list<int>::iterator ItServerLeader; |
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411 | |
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412 | bool stop = false; |
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413 | |
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414 | int* nbServerConnectionLocal = new int[serverSize] ; |
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415 | int* nbServerConnectionGlobal = new int[serverSize] ; |
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416 | for(int i=0;i<serverSize;++i) nbServerConnectionLocal[i]=0 ; |
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417 | for (itBuff = buffers.begin(); itBuff != buffers.end(); itBuff++) nbServerConnectionLocal[itBuff->first]=1 ; |
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418 | for (ItServerLeader = ranksServerLeader.begin(); ItServerLeader != ranksServerLeader.end(); ItServerLeader++) nbServerConnectionLocal[*ItServerLeader]=1 ; |
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419 | |
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420 | MPI_Allreduce(nbServerConnectionLocal, nbServerConnectionGlobal, serverSize, MPI_INT, MPI_SUM, intraComm); |
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421 | |
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422 | CEventClient event(CContext::GetType(), CContext::EVENT_ID_CONTEXT_FINALIZE); |
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423 | CMessage msg; |
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424 | |
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425 | for (int i=0;i<serverSize;++i) if (nbServerConnectionLocal[i]==1) event.push(i, nbServerConnectionGlobal[i], msg) ; |
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426 | sendEvent(event); |
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427 | |
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428 | delete[] nbServerConnectionLocal ; |
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429 | delete[] nbServerConnectionGlobal ; |
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430 | |
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431 | |
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432 | CTimer::get("Blocking time").resume(); |
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433 | checkBuffers(); |
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434 | CTimer::get("Blocking time").suspend(); |
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435 | |
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436 | std::map<int,StdSize>::const_iterator itbMap = mapBufferSize_.begin(), |
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437 | iteMap = mapBufferSize_.end(), itMap; |
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438 | |
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439 | StdSize totalBuf = 0; |
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440 | for (itMap = itbMap; itMap != iteMap; ++itMap) |
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441 | { |
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442 | report(10) << " Memory report : Context <" << context_->getId() << "> : client side : memory used for buffer of each connection to server" << endl |
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443 | << " +) To server with rank " << itMap->first << " : " << itMap->second << " bytes " << endl; |
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444 | totalBuf += itMap->second; |
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445 | } |
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446 | report(0) << " Memory report : Context <" << context_->getId() << "> : client side : total memory used for buffer " << totalBuf << " bytes" << endl; |
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447 | |
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448 | } |
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449 | |
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450 | |
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451 | /*! |
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452 | */ |
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453 | bool CLegacyContextClient::havePendingRequests(void) |
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454 | { |
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455 | bool pending = false; |
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456 | map<int,CClientBuffer*>::iterator itBuff; |
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457 | for (itBuff = buffers.begin(); itBuff != buffers.end(); itBuff++) |
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458 | pending |= itBuff->second->hasPendingRequest(); |
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459 | return pending; |
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460 | } |
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461 | |
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462 | bool CLegacyContextClient::havePendingRequests(list<int>& ranks) |
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463 | { |
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464 | list<int>::iterator it; |
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465 | bool pending = false; |
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466 | for (it = ranks.begin(); it != ranks.end(); it++) pending |= buffers[*it]->hasPendingRequest(); |
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467 | return pending; |
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468 | } |
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469 | |
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470 | bool CLegacyContextClient::isNotifiedFinalized(void) |
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471 | { |
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472 | bool finalized = true; |
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473 | map<int,CClientBuffer*>::iterator itBuff; |
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474 | for (itBuff = buffers.begin(); itBuff != buffers.end(); itBuff++) |
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475 | finalized &= itBuff->second->isNotifiedFinalized(); |
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476 | return finalized; |
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477 | } |
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478 | |
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479 | } |
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