1 | #include "context_server.hpp" |
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2 | #include "buffer_in.hpp" |
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3 | #include "type.hpp" |
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4 | #include "context.hpp" |
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5 | #include "object_template.hpp" |
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6 | #include "group_template.hpp" |
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7 | #include "attribute_template.hpp" |
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8 | #include "domain.hpp" |
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9 | #include "field.hpp" |
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10 | #include "file.hpp" |
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11 | #include "grid.hpp" |
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12 | #include "mpi.hpp" |
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13 | #include "tracer.hpp" |
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14 | #include "timer.hpp" |
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15 | #include "cxios.hpp" |
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16 | #include "event_scheduler.hpp" |
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17 | #include "server.hpp" |
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18 | #include "servers_ressource.hpp" |
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19 | #include "pool_ressource.hpp" |
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20 | #include "services.hpp" |
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21 | #include "contexts_manager.hpp" |
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22 | #include "timeline_events.hpp" |
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23 | |
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24 | #include <boost/functional/hash.hpp> |
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25 | #include <random> |
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26 | #include <chrono> |
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27 | |
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28 | |
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29 | namespace xios |
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30 | { |
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31 | using namespace std ; |
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32 | |
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33 | CContextServer::CContextServer(CContext* parent,MPI_Comm intraComm_,MPI_Comm interComm_) |
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34 | : eventScheduler_(nullptr), isProcessingEvent_(false), associatedClient_(nullptr) |
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35 | { |
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36 | context=parent; |
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37 | intraComm=intraComm_; |
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38 | MPI_Comm_size(intraComm,&intraCommSize); |
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39 | MPI_Comm_rank(intraComm,&intraCommRank); |
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40 | |
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41 | interComm=interComm_; |
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42 | int flag; |
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43 | MPI_Comm_test_inter(interComm,&flag); |
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44 | |
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45 | if (flag) attachedMode=false ; |
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46 | else attachedMode=true ; |
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47 | |
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48 | if (flag) MPI_Comm_remote_size(interComm,&clientSize_); |
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49 | else MPI_Comm_size(interComm,&clientSize_); |
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50 | |
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51 | |
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52 | SRegisterContextInfo contextInfo ; |
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53 | CXios::getContextsManager()->getContextInfo(context->getId(), contextInfo, intraComm) ; |
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54 | |
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55 | // if (contextInfo.serviceType != CServicesManager::CLIENT) // we must have an event scheduler => to be retrieve from the associated services |
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56 | // { |
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57 | //if (!isAttachedModeEnabled()) eventScheduler_=CXios::getPoolRessource()->getService(contextInfo.serviceId,contextInfo.partitionId)->getEventScheduler() ; |
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58 | eventScheduler_=CXios::getPoolRessource()->getService(contextInfo.serviceId,contextInfo.partitionId)->getEventScheduler() ; |
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59 | MPI_Comm_dup(intraComm, &processEventBarrier_) ; |
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60 | // } |
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61 | |
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62 | |
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63 | currentTimeLine=1; |
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64 | scheduled=false; |
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65 | finished=false; |
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66 | |
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67 | // generate unique hash for server |
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68 | auto time=chrono::system_clock::now().time_since_epoch().count() ; |
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69 | std::default_random_engine rd(time); // not reproducible from a run to another |
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70 | std::uniform_int_distribution<size_t> dist; |
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71 | hashId=dist(rd) ; |
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72 | MPI_Bcast(&hashId,1,MPI_SIZE_T,0,intraComm) ; // Bcast to all server of the context |
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73 | |
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74 | |
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75 | if (!isAttachedModeEnabled()) MPI_Intercomm_merge(interComm_,true,&interCommMerged_) ; |
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76 | MPI_Comm_split(intraComm_, intraCommRank, intraCommRank, &commSelf_) ; // for windows |
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77 | |
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78 | itLastTimeLine=lastTimeLine.begin() ; |
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79 | |
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80 | pureOneSided=CXios::getin<bool>("pure_one_sided",false); // pure one sided communication (for test) |
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81 | if (isAttachedModeEnabled()) pureOneSided=false ; // no one sided in attach mode |
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82 | |
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83 | } |
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84 | |
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85 | //! Attached mode is used ? |
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86 | //! \return true if attached mode is used, false otherwise |
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87 | bool CContextServer::isAttachedModeEnabled() const |
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88 | { |
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89 | return attachedMode ; |
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90 | } |
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91 | |
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92 | void CContextServer::setPendingEvent(void) |
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93 | { |
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94 | pendingEvent=true; |
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95 | } |
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96 | |
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97 | bool CContextServer::hasPendingEvent(void) |
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98 | { |
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99 | return pendingEvent; |
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100 | } |
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101 | |
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102 | bool CContextServer::hasFinished(void) |
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103 | { |
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104 | return finished; |
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105 | } |
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106 | |
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107 | bool CContextServer::eventLoop(bool enableEventsProcessing /*= true*/) |
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108 | { |
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109 | CTimer::get("listen request").resume(); |
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110 | listen(); |
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111 | CTimer::get("listen request").suspend(); |
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112 | CTimer::get("check pending request").resume(); |
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113 | checkPendingRequest(); |
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114 | checkPendingProbe() ; |
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115 | CTimer::get("check pending request").suspend(); |
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116 | CTimer::get("check event process").resume(); |
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117 | if (enableEventsProcessing) processEvents(); |
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118 | CTimer::get("check event process").suspend(); |
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119 | return finished; |
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120 | } |
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121 | |
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122 | void CContextServer::listen(void) |
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123 | { |
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124 | int rank; |
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125 | int flag; |
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126 | int count; |
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127 | char * addr; |
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128 | MPI_Status status; |
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129 | MPI_Message message ; |
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130 | map<int,CServerBuffer*>::iterator it; |
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131 | bool okLoop; |
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132 | |
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133 | traceOff(); |
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134 | MPI_Improbe(MPI_ANY_SOURCE, 20,interComm,&flag,&message, &status); |
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135 | traceOn(); |
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136 | if (flag==true) listenPendingRequest(message, status) ; |
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137 | } |
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138 | |
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139 | bool CContextServer::listenPendingRequest( MPI_Message &message, MPI_Status& status) |
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140 | { |
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141 | int count; |
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142 | char * addr; |
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143 | map<int,CServerBuffer*>::iterator it; |
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144 | int rank=status.MPI_SOURCE ; |
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145 | |
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146 | it=buffers.find(rank); |
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147 | if (it==buffers.end()) // Receive the buffer size and allocate the buffer |
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148 | { |
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149 | MPI_Aint recvBuff[4] ; |
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150 | MPI_Mrecv(recvBuff, 4, MPI_AINT, &message, &status); |
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151 | remoteHashId_ = recvBuff[0] ; |
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152 | StdSize buffSize = recvBuff[1]; |
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153 | vector<MPI_Aint> winAdress(2) ; |
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154 | winAdress[0]=recvBuff[2] ; winAdress[1]=recvBuff[3] ; |
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155 | mapBufferSize_.insert(std::make_pair(rank, buffSize)); |
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156 | |
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157 | // create windows dynamically for one-sided |
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158 | if (!isAttachedModeEnabled()) |
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159 | { |
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160 | CTimer::get("create Windows").resume() ; |
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161 | MPI_Comm interComm ; |
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162 | MPI_Intercomm_create(commSelf_, 0, interCommMerged_, rank, 0 , &interComm) ; |
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163 | MPI_Intercomm_merge(interComm, true, &winComm_[rank]) ; |
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164 | windows_[rank].resize(2) ; |
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165 | MPI_Win_create_dynamic(MPI_INFO_NULL, winComm_[rank], &windows_[rank][0]); |
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166 | MPI_Win_create_dynamic(MPI_INFO_NULL, winComm_[rank], &windows_[rank][1]); |
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167 | CTimer::get("create Windows").suspend() ; |
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168 | MPI_Barrier(winComm_[rank]) ; |
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169 | } |
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170 | else |
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171 | { |
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172 | winComm_[rank] = MPI_COMM_NULL ; |
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173 | windows_[rank].resize(2) ; |
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174 | windows_[rank][0] = MPI_WIN_NULL ; |
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175 | windows_[rank][1] = MPI_WIN_NULL ; |
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176 | } |
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177 | |
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178 | it=(buffers.insert(pair<int,CServerBuffer*>(rank,new CServerBuffer(windows_[rank], winAdress, 0, buffSize)))).first; |
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179 | lastTimeLine[rank]=0 ; |
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180 | itLastTimeLine=lastTimeLine.begin() ; |
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181 | |
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182 | return true; |
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183 | } |
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184 | else |
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185 | { |
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186 | std::pair<MPI_Message,MPI_Status> mypair(message,status) ; |
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187 | pendingProbe[rank].push_back(mypair) ; |
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188 | return false; |
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189 | } |
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190 | } |
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191 | |
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192 | void CContextServer::checkPendingProbe(void) |
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193 | { |
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194 | |
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195 | list<int> recvProbe ; |
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196 | list<int>::iterator itRecv ; |
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197 | map<int, list<std::pair<MPI_Message,MPI_Status> > >::iterator itProbe; |
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198 | |
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199 | for(itProbe=pendingProbe.begin();itProbe!=pendingProbe.end();itProbe++) |
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200 | { |
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201 | int rank=itProbe->first ; |
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202 | if (pendingRequest.count(rank)==0) |
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203 | { |
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204 | MPI_Message& message = itProbe->second.front().first ; |
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205 | MPI_Status& status = itProbe->second.front().second ; |
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206 | int count ; |
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207 | MPI_Get_count(&status,MPI_CHAR,&count); |
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208 | map<int,CServerBuffer*>::iterator it = buffers.find(rank); |
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209 | if ( (it->second->isBufferFree(count) && !it->second->isResizing()) // accept new request if buffer is free |
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210 | || (it->second->isResizing() && it->second->isBufferEmpty()) ) // or if resizing wait for buffer is empty |
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211 | { |
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212 | char * addr; |
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213 | addr=(char*)it->second->getBuffer(count); |
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214 | MPI_Imrecv(addr,count,MPI_CHAR, &message, &pendingRequest[rank]); |
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215 | bufferRequest[rank]=addr; |
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216 | recvProbe.push_back(rank) ; |
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217 | itProbe->second.pop_front() ; |
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218 | } |
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219 | } |
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220 | } |
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221 | |
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222 | for(itRecv=recvProbe.begin(); itRecv!=recvProbe.end(); itRecv++) if (pendingProbe[*itRecv].empty()) pendingProbe.erase(*itRecv) ; |
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223 | } |
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224 | |
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225 | |
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226 | void CContextServer::checkPendingRequest(void) |
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227 | { |
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228 | map<int,MPI_Request>::iterator it; |
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229 | list<int> recvRequest; |
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230 | list<int>::iterator itRecv; |
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231 | int rank; |
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232 | int flag; |
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233 | int count; |
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234 | MPI_Status status; |
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235 | |
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236 | if (!pendingRequest.empty()) CTimer::get("receiving requests").resume(); |
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237 | else CTimer::get("receiving requests").suspend(); |
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238 | |
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239 | for(it=pendingRequest.begin();it!=pendingRequest.end();it++) |
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240 | { |
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241 | rank=it->first; |
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242 | traceOff(); |
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243 | MPI_Test(& it->second, &flag, &status); |
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244 | traceOn(); |
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245 | if (flag==true) |
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246 | { |
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247 | buffers[rank]->updateCurrentWindows() ; |
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248 | recvRequest.push_back(rank); |
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249 | MPI_Get_count(&status,MPI_CHAR,&count); |
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250 | processRequest(rank,bufferRequest[rank],count); |
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251 | } |
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252 | } |
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253 | |
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254 | for(itRecv=recvRequest.begin();itRecv!=recvRequest.end();itRecv++) |
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255 | { |
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256 | pendingRequest.erase(*itRecv); |
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257 | bufferRequest.erase(*itRecv); |
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258 | } |
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259 | } |
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260 | |
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261 | void CContextServer::getBufferFromClient(size_t timeLine) |
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262 | { |
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263 | CTimer::get("CContextServer::getBufferFromClient").resume() ; |
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264 | if (!isAttachedModeEnabled()) // one sided desactivated in attached mode |
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265 | { |
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266 | int rank ; |
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267 | char *buffer ; |
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268 | size_t count ; |
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269 | |
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270 | if (itLastTimeLine==lastTimeLine.end()) itLastTimeLine=lastTimeLine.begin() ; |
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271 | for(;itLastTimeLine!=lastTimeLine.end();++itLastTimeLine) |
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272 | { |
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273 | rank=itLastTimeLine->first ; |
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274 | if (itLastTimeLine->second < timeLine && pendingRequest.count(rank)==0 && buffers[rank]->isBufferEmpty()) |
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275 | { |
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276 | if (buffers[rank]->getBufferFromClient(timeLine, buffer, count)) processRequest(rank, buffer, count); |
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277 | if (count >= 0) ++itLastTimeLine ; |
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278 | break ; |
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279 | } |
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280 | } |
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281 | } |
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282 | CTimer::get("CContextServer::getBufferFromClient").suspend() ; |
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283 | } |
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284 | |
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285 | |
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286 | void CContextServer::processRequest(int rank, char* buff,int count) |
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287 | { |
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288 | |
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289 | CBufferIn buffer(buff,count); |
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290 | char* startBuffer,endBuffer; |
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291 | int size, offset; |
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292 | size_t timeLine=0; |
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293 | map<size_t,CEventServer*>::iterator it; |
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294 | |
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295 | |
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296 | CTimer::get("Process request").resume(); |
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297 | while(count>0) |
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298 | { |
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299 | char* startBuffer=(char*)buffer.ptr(); |
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300 | CBufferIn newBuffer(startBuffer,buffer.remain()); |
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301 | newBuffer>>size>>timeLine; |
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302 | |
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303 | if (timeLine==timelineEventNotifyChangeBufferSize) |
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304 | { |
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305 | buffers[rank]->notifyBufferResizing() ; |
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306 | buffers[rank]->updateCurrentWindows() ; |
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307 | buffers[rank]->freeBuffer(count) ; |
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308 | info(100)<<"Receive NotifyChangeBufferSize from client rank "<<rank<<endl ; |
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309 | } |
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310 | else if (timeLine==timelineEventChangeBufferSize) |
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311 | { |
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312 | size_t newSize ; |
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313 | vector<MPI_Aint> winAdress(2) ; |
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314 | newBuffer>>newSize>>winAdress[0]>>winAdress[1] ; |
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315 | buffers[rank]->freeBuffer(count) ; |
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316 | delete buffers[rank] ; |
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317 | buffers[rank] = new CServerBuffer(windows_[rank], winAdress, 0, newSize) ; |
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318 | info(100)<<"Receive ChangeBufferSize from client rank "<<rank<<" newSize : "<<newSize<<" Address : "<<winAdress[0]<<" & "<<winAdress[1]<<endl ; |
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319 | } |
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320 | else |
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321 | { |
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322 | info(100)<<"Receive standard event from client rank "<<rank<<" with timeLine : "<<timeLine<<endl ; |
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323 | it=events.find(timeLine); |
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324 | if (it==events.end()) it=events.insert(pair<int,CEventServer*>(timeLine,new CEventServer(this))).first; |
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325 | it->second->push(rank,buffers[rank],startBuffer,size); |
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326 | if (timeLine>0) lastTimeLine[rank]=timeLine ; |
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327 | } |
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328 | buffer.advance(size); |
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329 | count=buffer.remain(); |
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330 | } |
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331 | |
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332 | CTimer::get("Process request").suspend(); |
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333 | } |
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334 | |
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335 | void CContextServer::processEvents(void) |
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336 | { |
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337 | map<size_t,CEventServer*>::iterator it; |
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338 | CEventServer* event; |
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339 | |
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340 | // if (context->isProcessingEvent()) return ; |
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341 | if (isProcessingEvent_) return ; |
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342 | if (isAttachedModeEnabled()) |
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343 | if (!CXios::getDaemonsManager()->isScheduledContext(remoteHashId_)) return ; |
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344 | |
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345 | it=events.find(currentTimeLine); |
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346 | if (it!=events.end()) |
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347 | { |
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348 | event=it->second; |
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349 | |
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350 | if (event->isFull()) |
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351 | { |
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352 | if (!scheduled && !isAttachedModeEnabled()) // Skip event scheduling for attached mode and reception on client side |
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353 | { |
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354 | eventScheduler_->registerEvent(currentTimeLine,hashId); |
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355 | scheduled=true; |
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356 | } |
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357 | else if (isAttachedModeEnabled() || eventScheduler_->queryEvent(currentTimeLine,hashId) ) |
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358 | { |
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359 | |
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360 | if (!eventScheduled_) |
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361 | { |
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362 | MPI_Ibarrier(processEventBarrier_,&processEventRequest_) ; |
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363 | eventScheduled_=true ; |
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364 | return ; |
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365 | } |
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366 | else |
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367 | { |
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368 | MPI_Status status ; |
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369 | int flag ; |
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370 | MPI_Test(&processEventRequest_, &flag, &status) ; |
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371 | if (!flag) return ; |
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372 | eventScheduled_=false ; |
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373 | } |
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374 | |
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375 | if (!isAttachedModeEnabled()) eventScheduler_->popEvent() ; |
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376 | //MPI_Barrier(intraComm) ; |
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377 | // When using attached mode, synchronise the processes to avoid that differents event be scheduled by differents processes |
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378 | // The best way to properly solve this problem will be to use the event scheduler also in attached mode |
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379 | // for now just set up a MPI barrier |
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380 | //ym to be check later |
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381 | // if (!eventScheduler_ && CXios::isServer) MPI_Barrier(intraComm) ; |
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382 | |
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383 | // context->setProcessingEvent() ; |
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384 | isProcessingEvent_=true ; |
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385 | CTimer::get("Process events").resume(); |
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386 | info(100)<<"Received Event "<<currentTimeLine<<" of class "<<event->classId<<" of type "<<event->type<<endl ; |
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387 | dispatchEvent(*event); |
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388 | CTimer::get("Process events").suspend(); |
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389 | isProcessingEvent_=false ; |
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390 | // context->unsetProcessingEvent() ; |
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391 | pendingEvent=false; |
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392 | delete event; |
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393 | events.erase(it); |
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394 | currentTimeLine++; |
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395 | scheduled = false; |
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396 | if (isAttachedModeEnabled()) CXios::getDaemonsManager()->unscheduleContext() ; |
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397 | } |
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398 | } |
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399 | else if (pendingRequest.empty()) getBufferFromClient(currentTimeLine) ; |
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400 | } |
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401 | else if (pendingRequest.empty()) getBufferFromClient(currentTimeLine) ; // if pure one sided check buffer even if no event recorded at current time line |
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402 | } |
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403 | |
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404 | CContextServer::~CContextServer() |
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405 | { |
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406 | map<int,CServerBuffer*>::iterator it; |
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407 | for(it=buffers.begin();it!=buffers.end();++it) delete it->second; |
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408 | buffers.clear() ; |
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409 | } |
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410 | |
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411 | void CContextServer::releaseBuffers() |
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412 | { |
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413 | for(auto it=buffers.begin();it!=buffers.end();++it) delete it->second ; |
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414 | buffers.clear() ; |
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415 | freeWindows() ; |
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416 | } |
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417 | |
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418 | void CContextServer::freeWindows() |
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419 | { |
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420 | if (!isAttachedModeEnabled()) |
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421 | { |
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422 | for(auto& it : winComm_) |
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423 | { |
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424 | int rank = it.first ; |
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425 | MPI_Win_free(&windows_[rank][0]); |
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426 | MPI_Win_free(&windows_[rank][1]); |
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427 | MPI_Comm_free(&winComm_[rank]) ; |
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428 | } |
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429 | } |
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430 | } |
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431 | |
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432 | void CContextServer::notifyClientsFinalize(void) |
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433 | { |
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434 | for(auto it=buffers.begin();it!=buffers.end();++it) |
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435 | { |
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436 | it->second->notifyClientFinalize() ; |
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437 | } |
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438 | } |
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439 | |
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440 | void CContextServer::dispatchEvent(CEventServer& event) |
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441 | { |
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442 | string contextName; |
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443 | string buff; |
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444 | int MsgSize; |
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445 | int rank; |
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446 | list<CEventServer::SSubEvent>::iterator it; |
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447 | StdString ctxId = context->getId(); |
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448 | CContext::setCurrent(ctxId); |
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449 | StdSize totalBuf = 0; |
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450 | |
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451 | if (event.classId==CContext::GetType() && event.type==CContext::EVENT_ID_CONTEXT_FINALIZE) |
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452 | { |
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453 | finished=true; |
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454 | info(20)<<" CContextServer: Receive context <"<<context->getId()<<"> finalize."<<endl; |
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455 | notifyClientsFinalize() ; |
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456 | CTimer::get("receiving requests").suspend(); |
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457 | context->finalize(); |
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458 | |
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459 | std::map<int, StdSize>::const_iterator itbMap = mapBufferSize_.begin(), |
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460 | iteMap = mapBufferSize_.end(), itMap; |
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461 | for (itMap = itbMap; itMap != iteMap; ++itMap) |
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462 | { |
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463 | rank = itMap->first; |
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464 | report(10)<< " Memory report : Context <"<<ctxId<<"> : server side : memory used for buffer of each connection to client" << endl |
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465 | << " +) With client of rank " << rank << " : " << itMap->second << " bytes " << endl; |
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466 | totalBuf += itMap->second; |
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467 | } |
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468 | report(0)<< " Memory report : Context <"<<ctxId<<"> : server side : total memory used for buffer "<<totalBuf<<" bytes"<<endl; |
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469 | } |
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470 | else if (event.classId==CContext::GetType()) CContext::dispatchEvent(event); |
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471 | else if (event.classId==CContextGroup::GetType()) CContextGroup::dispatchEvent(event); |
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472 | else if (event.classId==CCalendarWrapper::GetType()) CCalendarWrapper::dispatchEvent(event); |
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473 | else if (event.classId==CDomain::GetType()) CDomain::dispatchEvent(event); |
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474 | else if (event.classId==CDomainGroup::GetType()) CDomainGroup::dispatchEvent(event); |
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475 | else if (event.classId==CAxis::GetType()) CAxis::dispatchEvent(event); |
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476 | else if (event.classId==CAxisGroup::GetType()) CAxisGroup::dispatchEvent(event); |
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477 | else if (event.classId==CScalar::GetType()) CScalar::dispatchEvent(event); |
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478 | else if (event.classId==CScalarGroup::GetType()) CScalarGroup::dispatchEvent(event); |
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479 | else if (event.classId==CGrid::GetType()) CGrid::dispatchEvent(event); |
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480 | else if (event.classId==CGridGroup::GetType()) CGridGroup::dispatchEvent(event); |
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481 | else if (event.classId==CField::GetType()) CField::dispatchEvent(event); |
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482 | else if (event.classId==CFieldGroup::GetType()) CFieldGroup::dispatchEvent(event); |
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483 | else if (event.classId==CFile::GetType()) CFile::dispatchEvent(event); |
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484 | else if (event.classId==CFileGroup::GetType()) CFileGroup::dispatchEvent(event); |
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485 | else if (event.classId==CVariable::GetType()) CVariable::dispatchEvent(event); |
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486 | else |
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487 | { |
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488 | ERROR("void CContextServer::dispatchEvent(CEventServer& event)",<<" Bad event class Id"<<endl); |
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489 | } |
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490 | } |
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491 | |
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492 | bool CContextServer::isCollectiveEvent(CEventServer& event) |
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493 | { |
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494 | if (event.classId==CField::GetType()) return CField::isCollectiveEvent(event); |
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495 | else return true ; |
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496 | } |
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497 | } |
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